static LUA_FUNCTION(openssl_pkcs7_encrypt)
{
PKCS7 * p7 = NULL;
BIO *in = load_bio_object(L, 1);
STACK_OF(X509) *recipcerts = openssl_sk_x509_fromtable(L, 2);
const EVP_CIPHER *cipher = get_cipher(L, 3, "des3");
long flags = luaL_optint(L, 4, 0);
if (cipher == NULL)
{
luaL_error(L, "Failed to get cipher");
}
p7 = PKCS7_encrypt(recipcerts, in, cipher, flags);
BIO_free(in);
sk_X509_pop_free(recipcerts, X509_free);
if (p7 == NULL)
{
lua_pushnil(L);
}
else
{
PUSH_OBJECT(p7, "openssl.pkcs7");
}
return 1;
}
void pki_pkcs7::encryptBio(pki_x509 *crt, BIO *bio)
{
STACK_OF(X509) *certstack;
if (!crt)
return;
certstack = sk_X509_new_null();
sk_X509_push(certstack, crt->getCert());
openssl_error();
if (p7)
PKCS7_free(p7);
p7 = PKCS7_encrypt(certstack, bio, EVP_des_ede3_cbc(), PKCS7_BINARY);
openssl_error();
sk_X509_free(certstack);
}
/*
* call-seq:
* PKCS7.encrypt(certs, data, [, cipher [, flags]]) => pkcs7
*/
static VALUE
ossl_pkcs7_s_encrypt(int argc, VALUE *argv, VALUE klass)
{
VALUE certs, data, cipher, flags;
STACK_OF(X509) *x509s;
BIO *in;
const EVP_CIPHER *ciph;
int flg, status = 0;
VALUE ret;
PKCS7 *p7;
rb_scan_args(argc, argv, "22", &certs, &data, &cipher, &flags);
if(NIL_P(cipher)){
#if !defined(OPENSSL_NO_RC2)
ciph = EVP_rc2_40_cbc();
#elif !defined(OPENSSL_NO_DES)
ciph = EVP_des_ede3_cbc();
#elif !defined(OPENSSL_NO_RC2)
ciph = EVP_rc2_40_cbc();
#elif !defined(OPENSSL_NO_AES)
ciph = EVP_EVP_aes_128_cbc();
#else
ossl_raise(ePKCS7Error, "Must specify cipher");
#endif
}
else ciph = GetCipherPtr(cipher); /* NO NEED TO DUP */
flg = NIL_P(flags) ? 0 : NUM2INT(flags);
ret = NewPKCS7(cPKCS7);
in = ossl_obj2bio(data);
x509s = ossl_protect_x509_ary2sk(certs, &status);
if(status){
BIO_free(in);
rb_jump_tag(status);
}
if(!(p7 = PKCS7_encrypt(x509s, in, (EVP_CIPHER*)ciph, flg))){
BIO_free(in);
sk_X509_pop_free(x509s, X509_free);
ossl_raise(ePKCS7Error, NULL);
}
BIO_free(in);
SetPKCS7(ret, p7);
ossl_pkcs7_set_data(ret, data);
sk_X509_pop_free(x509s, X509_free);
return ret;
}
// Encrypt a block of data for a target certificate
int __fastcall util_encrypt(struct util_cert cert, char* data, int datalen, char** encdata)
{
int size = 0;
BIO *in = NULL;
PKCS7 *message = NULL;
STACK_OF(X509) *encerts = NULL;
*encdata = NULL;
if (datalen == 0) return 0;
// Setup certificates
encerts = sk_X509_new_null();
sk_X509_push(encerts, cert.x509);
// Encrypt the block
*encdata = NULL;
in = BIO_new_mem_buf(data, datalen);
message = PKCS7_encrypt(encerts, in, EVP_aes_128_cbc(), PKCS7_BINARY);
if (message == NULL) return 0;
size = i2d_PKCS7(message, (unsigned char**)encdata);
BIO_free(in);
PKCS7_free(message);
sk_X509_free(encerts);
return size;
}
int smime_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL, *indata = NULL;
EVP_PKEY *key = NULL;
PKCS7 *p7 = NULL;
STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;
STACK_OF(X509) *encerts = NULL, *other = NULL;
X509 *cert = NULL, *recip = NULL, *signer = NULL;
X509_STORE *store = NULL;
X509_VERIFY_PARAM *vpm = NULL;
const EVP_CIPHER *cipher = NULL;
const EVP_MD *sign_md = NULL;
const char *CAfile = NULL, *CApath = NULL, *prog = NULL;
char *certfile = NULL, *keyfile = NULL, *contfile = NULL, *inrand = NULL;
char *infile = NULL, *outfile = NULL, *signerfile = NULL, *recipfile =
NULL;
char *passinarg = NULL, *passin = NULL, *to = NULL, *from =
NULL, *subject = NULL;
OPTION_CHOICE o;
int noCApath = 0, noCAfile = 0;
int flags = PKCS7_DETACHED, operation = 0, ret = 0, need_rand = 0, indef =
0;
int informat = FORMAT_SMIME, outformat = FORMAT_SMIME, keyform =
FORMAT_PEM;
int vpmtouched = 0, rv = 0;
ENGINE *e = NULL;
const char *mime_eol = "\n";
if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
return 1;
prog = opt_init(argc, argv, smime_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(smime_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PDS, &informat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PDS, &outformat))
goto opthelp;
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_ENCRYPT:
operation = SMIME_ENCRYPT;
break;
case OPT_DECRYPT:
operation = SMIME_DECRYPT;
break;
case OPT_SIGN:
operation = SMIME_SIGN;
break;
case OPT_RESIGN:
operation = SMIME_RESIGN;
break;
case OPT_VERIFY:
operation = SMIME_VERIFY;
break;
case OPT_PK7OUT:
operation = SMIME_PK7OUT;
break;
case OPT_TEXT:
flags |= PKCS7_TEXT;
break;
case OPT_NOINTERN:
flags |= PKCS7_NOINTERN;
break;
case OPT_NOVERIFY:
flags |= PKCS7_NOVERIFY;
break;
case OPT_NOCHAIN:
flags |= PKCS7_NOCHAIN;
break;
case OPT_NOCERTS:
flags |= PKCS7_NOCERTS;
break;
case OPT_NOATTR:
flags |= PKCS7_NOATTR;
break;
case OPT_NODETACH:
flags &= ~PKCS7_DETACHED;
break;
case OPT_NOSMIMECAP:
flags |= PKCS7_NOSMIMECAP;
break;
case OPT_BINARY:
flags |= PKCS7_BINARY;
break;
case OPT_NOSIGS:
flags |= PKCS7_NOSIGS;
break;
case OPT_STREAM:
case OPT_INDEF:
indef = 1;
break;
case OPT_NOINDEF:
indef = 0;
break;
case OPT_CRLFEOL:
flags |= PKCS7_CRLFEOL;
mime_eol = "\r\n";
break;
case OPT_RAND:
inrand = opt_arg();
need_rand = 1;
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 0);
break;
case OPT_PASSIN:
passinarg = opt_arg();
break;
case OPT_TO:
to = opt_arg();
break;
case OPT_FROM:
from = opt_arg();
break;
case OPT_SUBJECT:
subject = opt_arg();
break;
case OPT_SIGNER:
/* If previous -signer argument add signer to list */
if (signerfile) {
if (sksigners == NULL
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(sksigners, signerfile);
if (keyfile == NULL)
keyfile = signerfile;
if (skkeys == NULL
&& (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(skkeys, keyfile);
keyfile = NULL;
}
signerfile = opt_arg();
break;
case OPT_RECIP:
recipfile = opt_arg();
break;
case OPT_MD:
if (!opt_md(opt_arg(), &sign_md))
goto opthelp;
break;
case OPT_CIPHER:
if (!opt_cipher(opt_unknown(), &cipher))
goto opthelp;
break;
case OPT_INKEY:
/* If previous -inkey argument add signer to list */
if (keyfile) {
if (signerfile == NULL) {
BIO_printf(bio_err,
"%s: Must have -signer before -inkey\n", prog);
goto opthelp;
}
if (sksigners == NULL
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(sksigners, signerfile);
signerfile = NULL;
if (skkeys == NULL
&& (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(skkeys, keyfile);
}
keyfile = opt_arg();
break;
case OPT_KEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
goto opthelp;
break;
case OPT_CERTFILE:
certfile = opt_arg();
break;
case OPT_CAFILE:
CAfile = opt_arg();
break;
case OPT_CAPATH:
CApath = opt_arg();
break;
case OPT_NOCAFILE:
noCAfile = 1;
break;
case OPT_NOCAPATH:
noCApath = 1;
break;
case OPT_CONTENT:
contfile = opt_arg();
break;
case OPT_V_CASES:
if (!opt_verify(o, vpm))
goto opthelp;
vpmtouched++;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) {
BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
goto opthelp;
}
if (operation & SMIME_SIGNERS) {
/* Check to see if any final signer needs to be appended */
if (keyfile && !signerfile) {
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
goto opthelp;
}
if (signerfile) {
if (!sksigners
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
sk_OPENSSL_STRING_push(sksigners, signerfile);
if (!skkeys && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
goto end;
if (!keyfile)
keyfile = signerfile;
sk_OPENSSL_STRING_push(skkeys, keyfile);
}
if (!sksigners) {
BIO_printf(bio_err, "No signer certificate specified\n");
goto opthelp;
}
signerfile = NULL;
keyfile = NULL;
need_rand = 1;
} else if (operation == SMIME_DECRYPT) {
if (!recipfile && !keyfile) {
BIO_printf(bio_err,
"No recipient certificate or key specified\n");
goto opthelp;
}
} else if (operation == SMIME_ENCRYPT) {
if (argc == 0) {
BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
goto opthelp;
}
need_rand = 1;
} else if (!operation)
goto opthelp;
if (!app_passwd(passinarg, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if (need_rand) {
app_RAND_load_file(NULL, (inrand != NULL));
if (inrand != NULL)
BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
app_RAND_load_files(inrand));
}
ret = 2;
if (!(operation & SMIME_SIGNERS))
flags &= ~PKCS7_DETACHED;
if (!(operation & SMIME_OP)) {
if (flags & PKCS7_BINARY)
outformat = FORMAT_BINARY;
}
if (!(operation & SMIME_IP)) {
if (flags & PKCS7_BINARY)
informat = FORMAT_BINARY;
}
if (operation == SMIME_ENCRYPT) {
if (!cipher) {
#ifndef OPENSSL_NO_DES
cipher = EVP_des_ede3_cbc();
#else
BIO_printf(bio_err, "No cipher selected\n");
goto end;
#endif
}
encerts = sk_X509_new_null();
if (!encerts)
goto end;
while (*argv) {
cert = load_cert(*argv, FORMAT_PEM,
"recipient certificate file");
if (cert == NULL)
goto end;
sk_X509_push(encerts, cert);
cert = NULL;
argv++;
}
}
if (certfile) {
if (!load_certs(certfile, &other, FORMAT_PEM, NULL,
"certificate file")) {
ERR_print_errors(bio_err);
goto end;
}
}
if (recipfile && (operation == SMIME_DECRYPT)) {
if ((recip = load_cert(recipfile, FORMAT_PEM,
"recipient certificate file")) == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (operation == SMIME_DECRYPT) {
if (!keyfile)
keyfile = recipfile;
} else if (operation == SMIME_SIGN) {
if (!keyfile)
keyfile = signerfile;
} else
keyfile = NULL;
if (keyfile) {
key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
if (!key)
goto end;
}
in = bio_open_default(infile, 'r', informat);
if (in == NULL)
goto end;
if (operation & SMIME_IP) {
if (informat == FORMAT_SMIME)
p7 = SMIME_read_PKCS7(in, &indata);
else if (informat == FORMAT_PEM)
p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
else if (informat == FORMAT_ASN1)
p7 = d2i_PKCS7_bio(in, NULL);
else {
BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
goto end;
}
if (!p7) {
BIO_printf(bio_err, "Error reading S/MIME message\n");
goto end;
}
if (contfile) {
BIO_free(indata);
if ((indata = BIO_new_file(contfile, "rb")) == NULL) {
BIO_printf(bio_err, "Can't read content file %s\n", contfile);
goto end;
}
}
}
out = bio_open_default(outfile, 'w', outformat);
if (out == NULL)
goto end;
if (operation == SMIME_VERIFY) {
if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
goto end;
X509_STORE_set_verify_cb(store, smime_cb);
if (vpmtouched)
X509_STORE_set1_param(store, vpm);
}
ret = 3;
if (operation == SMIME_ENCRYPT) {
if (indef)
flags |= PKCS7_STREAM;
p7 = PKCS7_encrypt(encerts, in, cipher, flags);
} else if (operation & SMIME_SIGNERS) {
int i;
/*
* If detached data content we only enable streaming if S/MIME output
* format.
*/
if (operation == SMIME_SIGN) {
if (flags & PKCS7_DETACHED) {
if (outformat == FORMAT_SMIME)
flags |= PKCS7_STREAM;
} else if (indef)
flags |= PKCS7_STREAM;
flags |= PKCS7_PARTIAL;
p7 = PKCS7_sign(NULL, NULL, other, in, flags);
if (!p7)
goto end;
if (flags & PKCS7_NOCERTS) {
for (i = 0; i < sk_X509_num(other); i++) {
X509 *x = sk_X509_value(other, i);
PKCS7_add_certificate(p7, x);
}
}
} else
flags |= PKCS7_REUSE_DIGEST;
for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
signerfile = sk_OPENSSL_STRING_value(sksigners, i);
keyfile = sk_OPENSSL_STRING_value(skkeys, i);
signer = load_cert(signerfile, FORMAT_PEM,
"signer certificate");
if (!signer)
goto end;
key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
if (!key)
goto end;
if (!PKCS7_sign_add_signer(p7, signer, key, sign_md, flags))
goto end;
X509_free(signer);
signer = NULL;
EVP_PKEY_free(key);
key = NULL;
}
/* If not streaming or resigning finalize structure */
if ((operation == SMIME_SIGN) && !(flags & PKCS7_STREAM)) {
if (!PKCS7_final(p7, in, flags))
goto end;
}
}
if (!p7) {
BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
goto end;
}
ret = 4;
if (operation == SMIME_DECRYPT) {
if (!PKCS7_decrypt(p7, key, recip, out, flags)) {
BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
goto end;
}
} else if (operation == SMIME_VERIFY) {
STACK_OF(X509) *signers;
if (PKCS7_verify(p7, other, store, indata, out, flags))
BIO_printf(bio_err, "Verification successful\n");
else {
BIO_printf(bio_err, "Verification failure\n");
goto end;
}
signers = PKCS7_get0_signers(p7, other, flags);
if (!save_certs(signerfile, signers)) {
BIO_printf(bio_err, "Error writing signers to %s\n", signerfile);
ret = 5;
goto end;
}
sk_X509_free(signers);
} else if (operation == SMIME_PK7OUT)
PEM_write_bio_PKCS7(out, p7);
else {
if (to)
BIO_printf(out, "To: %s%s", to, mime_eol);
if (from)
BIO_printf(out, "From: %s%s", from, mime_eol);
if (subject)
BIO_printf(out, "Subject: %s%s", subject, mime_eol);
if (outformat == FORMAT_SMIME) {
if (operation == SMIME_RESIGN)
rv = SMIME_write_PKCS7(out, p7, indata, flags);
else
rv = SMIME_write_PKCS7(out, p7, in, flags);
} else if (outformat == FORMAT_PEM)
rv = PEM_write_bio_PKCS7_stream(out, p7, in, flags);
else if (outformat == FORMAT_ASN1)
rv = i2d_PKCS7_bio_stream(out, p7, in, flags);
else {
BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
goto end;
}
if (rv == 0) {
BIO_printf(bio_err, "Error writing output\n");
ret = 3;
goto end;
}
}
ret = 0;
end:
if (need_rand)
app_RAND_write_file(NULL);
if (ret)
ERR_print_errors(bio_err);
sk_X509_pop_free(encerts, X509_free);
sk_X509_pop_free(other, X509_free);
X509_VERIFY_PARAM_free(vpm);
sk_OPENSSL_STRING_free(sksigners);
sk_OPENSSL_STRING_free(skkeys);
X509_STORE_free(store);
X509_free(cert);
X509_free(recip);
X509_free(signer);
EVP_PKEY_free(key);
PKCS7_free(p7);
release_engine(e);
BIO_free(in);
BIO_free(indata);
BIO_free_all(out);
OPENSSL_free(passin);
return (ret);
}
/*******************************************************************************
函数名称: cert_pkcs7_wrap
功能描述: 将要发送的消息采用PKCS#7格式进行编码
输入参数: struct scep *s, SCEP操作的结构体指针。
s32 hasra, 是否使用RA证书，1,使用；0，不使用
输出参数: 无
返 回 值: 1,成功；-1，失败
--------------------------------------------------------------------------------
最近一次修改记录:
修改作者:王朝
修改目的:添加新函数
修改日期:2009年12月28日
*********************************************************************************/
s32 cert_pkcs7_wrap(struct scep *s, s32 hasra)
{
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
BIO *base64bio = NULL;
u8 *buffer = NULL;
s32 len = 0;
STACK_OF(X509) *recipients = NULL;
PKCS7 *p7enc = NULL;
PKCS7_SIGNER_INFO *si = NULL;
STACK_OF(X509_ATTRIBUTE) *attributes = NULL;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
s32 retval = -1;
/* sender nonce */
s->sender_nonce_len = 16;
s->sender_nonce = (u8 *)malloc((u32)s->sender_nonce_len);
RAND_bytes(s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch(s->request_type)
{
case SCEP_REQUEST_PKCSREQ:
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if ((i2d_X509_REQ_bio(databio, cert_request)) <= 0)
{
goto end;
}
(void)BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((i2d_pkcs7_issuer_and_subject_bio(databio, s->ias_getcertinit)) <= 0)
{
goto end;
}
(void)BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
default:
goto end;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
s->request_len = BIO_get_mem_data(databio, &s->request_payload);
BIO_free(databio);
databio = NULL;
/* Create encryption certificate stack */
if (NULL == (recipients = sk_X509_new_null() ))
{
goto end;
}
/* Use different CA cert for encryption if requested */
if (1 == hasra)
{
if (sk_X509_push(recipients, cert_encert) <= 0)
{
goto end;
}
}
else
{
/* Use same CA cert also for encryption */
if (sk_X509_push(recipients, cert_cacert) <= 0)
{
goto end;
}
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(s->request_payload,s->request_len)) == NULL)
{
goto end;
}
/* Encrypt */
if (NULL == (p7enc = PKCS7_encrypt(recipients, encbio, cert_enc_alg, PKCS7_BINARY)))
{
goto end;
}
BIO_free(encbio);
encbio = NULL;
sk_X509_free(recipients);
recipients = NULL;
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0)
{
goto end;
}
PKCS7_free(p7enc);
p7enc = NULL;
(void)BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
/* Create outer PKCS#7 */
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL)
{
goto end;
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed))
{
goto end;
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7,signercert, signerkey, cert_sig_alg)) == NULL)
{
goto end;
}
/* Set signed attributes */
attributes = sk_X509_ATTRIBUTE_new_null();
cert_add_attribute_string(attributes, nid_transId, s->transaction_id);
cert_add_attribute_string(attributes, nid_messageType, s->request_type_str);
cert_add_attribute_octet(attributes, nid_senderNonce, (s8 *)(s->sender_nonce),s->sender_nonce_len);
PKCS7_set_signed_attributes(si, attributes);
sk_X509_ATTRIBUTE_free(attributes);
attributes = NULL;
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data)))
{
goto end;
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data))
{
goto end;
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL);
if (pkcs7bio == NULL)
{
goto end;
}
if (len != BIO_write(pkcs7bio, buffer, len))
{
goto end;
}
BIO_free(memorybio);
memorybio = NULL;
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio))
{
goto end;
}
/* base64-encode the data */
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
base64bio = BIO_new(BIO_f_base64());
outbio = BIO_push(base64bio, memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
(void)BIO_flush(outbio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
s->request_len = BIO_get_mem_data(memorybio, &s->request_payload);
retval = 1;
end:
if(NULL != databio)
{
BIO_free(databio);
}
if(NULL != encbio)
{
BIO_free(encbio);
}
if(NULL != p7enc)
{
PKCS7_free(p7enc);
}
if(NULL != pkcs7bio)
{
BIO_free(pkcs7bio);
}
if(NULL != memorybio)
{
BIO_free(memorybio);
}
if(NULL != base64bio)
{
BIO_free(base64bio);
}
if(NULL != recipients)
{
sk_X509_free(recipients);
}
if(NULL != attributes)
{
sk_X509_ATTRIBUTE_free(attributes);
}
return retval;
}
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
int operation = 0;
int ret = 0;
char **args;
const char *inmode = "r", *outmode = "w";
char *infile = NULL, *outfile = NULL;
char *signerfile = NULL, *recipfile = NULL;
char *certfile = NULL, *keyfile = NULL, *contfile=NULL;
const EVP_CIPHER *cipher = NULL;
PKCS7 *p7 = NULL;
X509_STORE *store = NULL;
X509 *cert = NULL, *recip = NULL, *signer = NULL;
EVP_PKEY *key = NULL;
STACK_OF(X509) *encerts = NULL, *other = NULL;
BIO *in = NULL, *out = NULL, *indata = NULL;
int badarg = 0;
int flags = PKCS7_DETACHED;
char *to = NULL, *from = NULL, *subject = NULL;
char *CAfile = NULL, *CApath = NULL;
char *passargin = NULL, *passin = NULL;
char *inrand = NULL;
int need_rand = 0;
int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
int keyform = FORMAT_PEM;
#ifndef OPENSSL_NO_ENGINE
char *engine=NULL;
#endif
X509_VERIFY_PARAM *vpm = NULL;
args = argv + 1;
ret = 1;
apps_startup();
if (bio_err == NULL)
{
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);
}
if (!load_config(bio_err, NULL))
goto end;
while (!badarg && *args && *args[0] == '-')
{
if (!strcmp (*args, "-encrypt"))
operation = SMIME_ENCRYPT;
else if (!strcmp (*args, "-decrypt"))
operation = SMIME_DECRYPT;
else if (!strcmp (*args, "-sign"))
operation = SMIME_SIGN;
else if (!strcmp (*args, "-verify"))
operation = SMIME_VERIFY;
else if (!strcmp (*args, "-pk7out"))
operation = SMIME_PK7OUT;
#ifndef OPENSSL_NO_DES
else if (!strcmp (*args, "-des3"))
cipher = EVP_des_ede3_cbc();
else if (!strcmp (*args, "-des"))
cipher = EVP_des_cbc();
#endif
#ifndef OPENSSL_NO_SEED
else if (!strcmp (*args, "-seed"))
cipher = EVP_seed_cbc();
#endif
#ifndef OPENSSL_NO_RC2
else if (!strcmp (*args, "-rc2-40"))
cipher = EVP_rc2_40_cbc();
else if (!strcmp (*args, "-rc2-128"))
cipher = EVP_rc2_cbc();
else if (!strcmp (*args, "-rc2-64"))
cipher = EVP_rc2_64_cbc();
#endif
#ifndef OPENSSL_NO_AES
else if (!strcmp(*args,"-aes128"))
cipher = EVP_aes_128_cbc();
else if (!strcmp(*args,"-aes192"))
cipher = EVP_aes_192_cbc();
else if (!strcmp(*args,"-aes256"))
cipher = EVP_aes_256_cbc();
#endif
#ifndef OPENSSL_NO_CAMELLIA
else if (!strcmp(*args,"-camellia128"))
cipher = EVP_camellia_128_cbc();
else if (!strcmp(*args,"-camellia192"))
cipher = EVP_camellia_192_cbc();
else if (!strcmp(*args,"-camellia256"))
cipher = EVP_camellia_256_cbc();
#endif
else if (!strcmp (*args, "-text"))
flags |= PKCS7_TEXT;
else if (!strcmp (*args, "-nointern"))
flags |= PKCS7_NOINTERN;
else if (!strcmp (*args, "-noverify"))
flags |= PKCS7_NOVERIFY;
else if (!strcmp (*args, "-nochain"))
flags |= PKCS7_NOCHAIN;
else if (!strcmp (*args, "-nocerts"))
flags |= PKCS7_NOCERTS;
else if (!strcmp (*args, "-noattr"))
flags |= PKCS7_NOATTR;
else if (!strcmp (*args, "-nodetach"))
flags &= ~PKCS7_DETACHED;
else if (!strcmp (*args, "-nosmimecap"))
flags |= PKCS7_NOSMIMECAP;
else if (!strcmp (*args, "-binary"))
flags |= PKCS7_BINARY;
else if (!strcmp (*args, "-nosigs"))
flags |= PKCS7_NOSIGS;
else if (!strcmp (*args, "-nooldmime"))
flags |= PKCS7_NOOLDMIMETYPE;
else if (!strcmp (*args, "-crlfeol"))
flags |= PKCS7_CRLFEOL;
else if (!strcmp(*args,"-rand"))
{
if (args[1])
{
args++;
inrand = *args;
}
else
badarg = 1;
need_rand = 1;
}
#ifndef OPENSSL_NO_ENGINE
else if (!strcmp(*args,"-engine"))
{
if (args[1])
{
args++;
engine = *args;
}
else badarg = 1;
}
#endif
else if (!strcmp(*args,"-passin"))
{
if (args[1])
{
args++;
passargin = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-to"))
{
if (args[1])
{
args++;
to = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-from"))
{
if (args[1])
{
args++;
from = *args;
}
else badarg = 1;
}
else if (!strcmp (*args, "-subject"))
{
if (args[1])
{
args++;
subject = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-signer"))
{
if (args[1])
{
args++;
signerfile = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-recip"))
{
if (args[1])
{
args++;
recipfile = *args;
}
else badarg = 1;
}
else if (!strcmp (*args, "-inkey"))
{
if (args[1])
{
args++;
keyfile = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-keyform"))
{
if (args[1])
{
args++;
keyform = str2fmt(*args);
}
else
badarg = 1;
}
else if (!strcmp (*args, "-certfile"))
{
if (args[1])
{
args++;
certfile = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-CAfile"))
{
if (args[1])
{
args++;
CAfile = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-CApath"))
{
if (args[1])
{
args++;
CApath = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-in"))
{
if (args[1])
{
args++;
infile = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-inform"))
{
if (args[1])
{
args++;
informat = str2fmt(*args);
}
else
badarg = 1;
}
else if (!strcmp (*args, "-outform"))
{
if (args[1])
{
args++;
outformat = str2fmt(*args);
}
else
badarg = 1;
}
else if (!strcmp (*args, "-out"))
{
if (args[1])
{
args++;
outfile = *args;
}
else
badarg = 1;
}
else if (!strcmp (*args, "-content"))
{
if (args[1])
{
args++;
contfile = *args;
}
else
badarg = 1;
}
else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
continue;
else
badarg = 1;
args++;
}
if (operation == SMIME_SIGN)
{
if (!signerfile)
{
BIO_printf(bio_err, "No signer certificate specified\n");
badarg = 1;
}
need_rand = 1;
}
else if (operation == SMIME_DECRYPT)
{
if (!recipfile && !keyfile)
{
BIO_printf(bio_err, "No recipient certificate or key specified\n");
badarg = 1;
}
}
else if (operation == SMIME_ENCRYPT)
{
if (!*args)
{
BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
badarg = 1;
}
need_rand = 1;
}
else if (!operation)
badarg = 1;
if (badarg)
{
BIO_printf (bio_err, "Usage smime [options] cert.pem ...\n");
BIO_printf (bio_err, "where options are\n");
BIO_printf (bio_err, "-encrypt encrypt message\n");
BIO_printf (bio_err, "-decrypt decrypt encrypted message\n");
BIO_printf (bio_err, "-sign sign message\n");
BIO_printf (bio_err, "-verify verify signed message\n");
BIO_printf (bio_err, "-pk7out output PKCS#7 structure\n");
#ifndef OPENSSL_NO_DES
BIO_printf (bio_err, "-des3 encrypt with triple DES\n");
BIO_printf (bio_err, "-des encrypt with DES\n");
#endif
#ifndef OPENSSL_NO_SEED
BIO_printf (bio_err, "-seed encrypt with SEED\n");
#endif
#ifndef OPENSSL_NO_RC2
BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");
BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n");
BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n");
#endif
#ifndef OPENSSL_NO_AES
BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");
BIO_printf (bio_err, " encrypt PEM output with cbc aes\n");
#endif
#ifndef OPENSSL_NO_CAMELLIA
BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n");
BIO_printf (bio_err, " encrypt PEM output with cbc camellia\n");
#endif
BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n");
BIO_printf (bio_err, "-nosigs don't verify message signature\n");
BIO_printf (bio_err, "-noverify don't verify signers certificate\n");
BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n");
BIO_printf (bio_err, "-nodetach use opaque signing\n");
BIO_printf (bio_err, "-noattr don't include any signed attributes\n");
BIO_printf (bio_err, "-binary don't translate message to text\n");
BIO_printf (bio_err, "-certfile file other certificates file\n");
BIO_printf (bio_err, "-signer file signer certificate file\n");
BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n");
BIO_printf (bio_err, "-in file input file\n");
BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n");
BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n");
BIO_printf (bio_err, "-keyform arg input private key format (PEM or ENGINE)\n");
BIO_printf (bio_err, "-out file output file\n");
BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n");
BIO_printf (bio_err, "-content file supply or override content for detached signature\n");
BIO_printf (bio_err, "-to addr to address\n");
BIO_printf (bio_err, "-from ad from address\n");
BIO_printf (bio_err, "-subject s subject\n");
BIO_printf (bio_err, "-text include or delete text MIME headers\n");
BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
BIO_printf (bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n");
BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
#ifndef OPENSSL_NO_ENGINE
BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n");
#endif
BIO_printf (bio_err, "-passin arg input file pass phrase source\n");
BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
BIO_printf(bio_err, " load the file (or the files in the directory) into\n");
BIO_printf(bio_err, " the random number generator\n");
BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n");
goto end;
}
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine, 0);
#endif
if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))
{
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if (need_rand)
{
app_RAND_load_file(NULL, bio_err, (inrand != NULL));
if (inrand != NULL)
BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
app_RAND_load_files(inrand));
}
ret = 2;
if (operation != SMIME_SIGN)
flags &= ~PKCS7_DETACHED;
if (operation & SMIME_OP)
{
if (flags & PKCS7_BINARY)
inmode = "rb";
if (outformat == FORMAT_ASN1)
outmode = "wb";
}
else
{
if (flags & PKCS7_BINARY)
outmode = "wb";
if (informat == FORMAT_ASN1)
inmode = "rb";
}
if (operation == SMIME_ENCRYPT)
{
if (!cipher)
{
#ifndef OPENSSL_NO_RC2
cipher = EVP_rc2_40_cbc();
#else
BIO_printf(bio_err, "No cipher selected\n");
goto end;
#endif
}
encerts = sk_X509_new_null();
while (*args)
{
if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,
NULL, e, "recipient certificate file")))
{
#if 0 /* An appropriate message is already printed */
BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);
#endif
goto end;
}
sk_X509_push(encerts, cert);
cert = NULL;
args++;
}
}
if (signerfile && (operation == SMIME_SIGN))
{
if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM, NULL,
e, "signer certificate")))
{
#if 0 /* An appropri message has already been printed */
BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);
#endif
goto end;
}
}
if (certfile)
{
if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,
e, "certificate file")))
{
#if 0 /* An appropriate message has already been printed */
BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);
#endif
ERR_print_errors(bio_err);
goto end;
}
}
if (recipfile && (operation == SMIME_DECRYPT))
{
if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,
e, "recipient certificate file")))
{
#if 0 /* An appropriate message has alrady been printed */
BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);
#endif
ERR_print_errors(bio_err);
goto end;
}
}
if (operation == SMIME_DECRYPT)
{
if (!keyfile)
keyfile = recipfile;
}
else if (operation == SMIME_SIGN)
{
if (!keyfile)
keyfile = signerfile;
}
else keyfile = NULL;
if (keyfile)
{
key = load_key(bio_err, keyfile, keyform, 0, passin, e,
"signing key file");
if (!key)
goto end;
}
if (infile)
{
if (!(in = BIO_new_file(infile, inmode)))
{
BIO_printf (bio_err,
"Can't open input file %s\n", infile);
goto end;
}
}
else
in = BIO_new_fp(stdin, BIO_NOCLOSE);
if (outfile)
{
if (!(out = BIO_new_file(outfile, outmode)))
{
BIO_printf (bio_err,
"Can't open output file %s\n", outfile);
goto end;
}
}
else
{
out = BIO_new_fp(stdout, BIO_NOCLOSE);
#ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
out = BIO_push(tmpbio, out);
}
#endif
}
if (operation == SMIME_VERIFY)
{
if (!(store = setup_verify(bio_err, CAfile, CApath)))
goto end;
X509_STORE_set_verify_cb_func(store, smime_cb);
if (vpm)
X509_STORE_set1_param(store, vpm);
}
ret = 3;
if (operation == SMIME_ENCRYPT)
p7 = PKCS7_encrypt(encerts, in, cipher, flags);
else if (operation == SMIME_SIGN)
{
/* If detached data and SMIME output enable partial
* signing.
*/
if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME))
flags |= PKCS7_STREAM;
p7 = PKCS7_sign(signer, key, other, in, flags);
}
else
{
if (informat == FORMAT_SMIME)
p7 = SMIME_read_PKCS7(in, &indata);
else if (informat == FORMAT_PEM)
p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
else if (informat == FORMAT_ASN1)
p7 = d2i_PKCS7_bio(in, NULL);
else
{
BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
goto end;
}
if (!p7)
{
BIO_printf(bio_err, "Error reading S/MIME message\n");
goto end;
}
if (contfile)
{
BIO_free(indata);
if (!(indata = BIO_new_file(contfile, "rb")))
{
BIO_printf(bio_err, "Can't read content file %s\n", contfile);
goto end;
}
}
}
if (!p7)
{
BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
goto end;
}
ret = 4;
if (operation == SMIME_DECRYPT)
{
if (!PKCS7_decrypt(p7, key, recip, out, flags))
{
BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
goto end;
}
}
else if (operation == SMIME_VERIFY)
{
STACK_OF(X509) *signers;
if (PKCS7_verify(p7, other, store, indata, out, flags))
BIO_printf(bio_err, "Verification successful\n");
else
{
BIO_printf(bio_err, "Verification failure\n");
goto end;
}
signers = PKCS7_get0_signers(p7, other, flags);
if (!save_certs(signerfile, signers))
{
BIO_printf(bio_err, "Error writing signers to %s\n",
signerfile);
ret = 5;
goto end;
}
sk_X509_free(signers);
}
else if (operation == SMIME_PK7OUT)
PEM_write_bio_PKCS7(out, p7);
else
{
if (to)
BIO_printf(out, "To: %s\n", to);
if (from)
BIO_printf(out, "From: %s\n", from);
if (subject)
BIO_printf(out, "Subject: %s\n", subject);
if (outformat == FORMAT_SMIME)
SMIME_write_PKCS7(out, p7, in, flags);
else if (outformat == FORMAT_PEM)
PEM_write_bio_PKCS7(out,p7);
else if (outformat == FORMAT_ASN1)
i2d_PKCS7_bio(out,p7);
else
{
BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
goto end;
}
}
ret = 0;
end:
if (need_rand)
app_RAND_write_file(NULL, bio_err);
if (ret) ERR_print_errors(bio_err);
sk_X509_pop_free(encerts, X509_free);
sk_X509_pop_free(other, X509_free);
if (vpm)
X509_VERIFY_PARAM_free(vpm);
X509_STORE_free(store);
X509_free(cert);
X509_free(recip);
X509_free(signer);
EVP_PKEY_free(key);
PKCS7_free(p7);
BIO_free(in);
BIO_free(indata);
BIO_free_all(out);
if (passin) OPENSSL_free(passin);
return (ret);
}
/*
* Wrap data in PKCS#7 envelopes and base64-encode the result.
* Data is PKCS#10 request in PKCSReq, or pkcs7_issuer_and_subject
* structure in GetCertInitial and PKCS7_ISSUER_AND_SERIAL in
* GetCert and GETCrl.
*/
int pkcs7_wrap(struct scep *s, struct sscep_ctx *ctx, struct sscep_operation_info *op_info)
{
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
unsigned char *buffer = NULL;
int len = 0;
STACK_OF(X509) *recipients = NULL;
PKCS7 *p7enc = NULL;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attributes;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
int ret = SCEP_PKISTATUS_P7;
char *payload = NULL;
int payload_len;
/* Create a new sender nonce for all messages
* XXXXXXXXXXXXXX should it be per transaction? */
s->sender_nonce_len = 16;
free(s->sender_nonce);/* Clean up from previous runs */
s->sender_nonce = (char *)malloc(s->sender_nonce_len * sizeof(char));
RAND_bytes((unsigned char *) s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch (s->request_type) {
case SCEP_REQUEST_PKCSREQ:
/*
* Set printable message type
* We set this later as an autheticated attribute
* "messageType".
*/
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating inner PKCS#7");
}
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if (i2d_X509_REQ_bio(databio, op_info->request) <= 0) {
qeo_log_e("error writing certificate request in bio");
goto error;
}
(void)BIO_flush(databio);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating inner PKCS#7");
}
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if (i2d_pkcs7_issuer_and_subject_bio(databio, s->ias_getcertinit)) {
qeo_log_e("error writing GetCertInitial data in bio");
goto error;
}
(void)BIO_flush(databio);
break;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
payload_len = BIO_get_mem_data(databio, &payload);
if (ctx->verbose){
qeo_log_i("data payload size: %d bytes", payload_len);
}
/* Create encryption certificate stack */
if ((recipients = sk_X509_new(NULL) ) == NULL) {
qeo_log_e("error creating certificate stack");
goto error;
}
if (sk_X509_push(recipients, op_info->racert) <= 0) {
qeo_log_e("error adding recipient encryption certificate");
goto error;
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(payload, payload_len)) == NULL ) {
qeo_log_e("error creating data bio");
goto error;
}
/* Encrypt */
if (!(p7enc = PKCS7_encrypt(recipients, encbio, ctx->enc_alg, PKCS7_BINARY))) {
qeo_log_e("request payload encrypt failed");
goto error;
}
if (ctx->verbose){
qeo_log_i("successfully encrypted payload");
}
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0) {
qeo_log_e("error writing encrypted data");
goto error;
}
(void)BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
BIO_free(memorybio);
memorybio=NULL;
if (ctx->verbose){
qeo_log_i("envelope size: %d bytes", len);
}
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, p7enc);
}
/* Create outer PKCS#7 */
if (ctx->verbose){
qeo_log_i("creating outer PKCS#7");
}
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL ) {
qeo_log_e("failed creating PKCS#7 for signing");
goto error;
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed)) {
qeo_log_e("failed setting PKCS#7 type");
goto error;
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7, signercert, signerkey, ctx->sig_alg)) == NULL ) {
qeo_log_e("error adding PKCS#7 signature");
goto error;
}
if (ctx->verbose){
qeo_log_i("signature added successfully");
}
/* Set signed attributes */
if (ctx->verbose){
qeo_log_i("adding signed attributes");
}
attributes = sk_X509_ATTRIBUTE_new_null();
add_attribute_string(attributes, ctx->nid_transId, s->transaction_id, ctx);
add_attribute_string(attributes, ctx->nid_messageType, s->request_type_str, ctx);
add_attribute_octet(attributes, ctx->nid_senderNonce, s->sender_nonce, s->sender_nonce_len, ctx);
PKCS7_set_signed_attributes(si, attributes);
sk_X509_ATTRIBUTE_pop_free(attributes, X509_ATTRIBUTE_free);
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data))) {
qeo_log_e("error adding NID_pkcs9_contentType");
goto error;
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data)) {
qeo_log_e("failed setting PKCS#7 content type");
goto error;
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL );
if (pkcs7bio == NULL ) {
qeo_log_e("error opening bio for writing PKCS#7 data");
goto error;
}
if (len != BIO_write(pkcs7bio, buffer, len)) {
qeo_log_e("error writing PKCS#7 data");
goto error;
}
if (ctx->verbose){
qeo_log_i("PKCS#7 data written successfully");
}
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio)) {
qeo_log_e("error finalizing outer PKCS#7");
goto error;
}
if (ctx->debug) {
qeo_log_i("printing PEM fomatted PKCS#7");
PEM_write_PKCS7(stdout, s->request_p7);
}
/* base64-encode the data */
if (ctx->verbose){
qeo_log_i("applying base64 encoding");
}
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
outbio = BIO_push(BIO_new(BIO_f_base64()), memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
(void)BIO_flush(outbio);
payload_len = BIO_get_mem_data(memorybio, &payload);
s->request_payload = (char*) malloc(sizeof(char)*payload_len);
if (!s->request_payload){
goto error;
}
s->request_len = payload_len;
memcpy(s->request_payload, payload, s->request_len);
if (ctx->verbose){
qeo_log_i("base64 encoded payload size: %d bytes", payload_len);
}
ret = 0;
error:
BIO_free(databio);
BIO_free(encbio);
BIO_free_all(pkcs7bio);
BIO_free(memorybio);
BIO_free(outbio);
if (recipients != NULL){
sk_X509_free(recipients);/* Only free the stack, not the certificates */
}
PKCS7_free(p7enc);
OPENSSL_free(buffer);
return ret;
}
int
smime_main(int argc, char **argv)
{
ENGINE *e = NULL;
int operation = 0;
int ret = 0;
char **args;
const char *inmode = "r", *outmode = "w";
char *infile = NULL, *outfile = NULL;
char *signerfile = NULL, *recipfile = NULL;
STACK_OF(OPENSSL_STRING) * sksigners = NULL, *skkeys = NULL;
char *certfile = NULL, *keyfile = NULL, *contfile = NULL;
const EVP_CIPHER *cipher = NULL;
PKCS7 *p7 = NULL;
X509_STORE *store = NULL;
X509 *cert = NULL, *recip = NULL, *signer = NULL;
EVP_PKEY *key = NULL;
STACK_OF(X509) * encerts = NULL, *other = NULL;
BIO *in = NULL, *out = NULL, *indata = NULL;
int badarg = 0;
int flags = PKCS7_DETACHED;
char *to = NULL, *from = NULL, *subject = NULL;
char *CAfile = NULL, *CApath = NULL;
char *passargin = NULL, *passin = NULL;
int indef = 0;
const EVP_MD *sign_md = NULL;
int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
int keyform = FORMAT_PEM;
#ifndef OPENSSL_NO_ENGINE
char *engine = NULL;
#endif
X509_VERIFY_PARAM *vpm = NULL;
args = argv + 1;
ret = 1;
while (!badarg && *args && *args[0] == '-') {
if (!strcmp(*args, "-encrypt"))
operation = SMIME_ENCRYPT;
else if (!strcmp(*args, "-decrypt"))
operation = SMIME_DECRYPT;
else if (!strcmp(*args, "-sign"))
operation = SMIME_SIGN;
else if (!strcmp(*args, "-resign"))
operation = SMIME_RESIGN;
else if (!strcmp(*args, "-verify"))
operation = SMIME_VERIFY;
else if (!strcmp(*args, "-pk7out"))
operation = SMIME_PK7OUT;
#ifndef OPENSSL_NO_DES
else if (!strcmp(*args, "-des3"))
cipher = EVP_des_ede3_cbc();
else if (!strcmp(*args, "-des"))
cipher = EVP_des_cbc();
#endif
#ifndef OPENSSL_NO_RC2
else if (!strcmp(*args, "-rc2-40"))
cipher = EVP_rc2_40_cbc();
else if (!strcmp(*args, "-rc2-128"))
cipher = EVP_rc2_cbc();
else if (!strcmp(*args, "-rc2-64"))
cipher = EVP_rc2_64_cbc();
#endif
#ifndef OPENSSL_NO_AES
else if (!strcmp(*args, "-aes128"))
cipher = EVP_aes_128_cbc();
else if (!strcmp(*args, "-aes192"))
cipher = EVP_aes_192_cbc();
else if (!strcmp(*args, "-aes256"))
cipher = EVP_aes_256_cbc();
#endif
#ifndef OPENSSL_NO_CAMELLIA
else if (!strcmp(*args, "-camellia128"))
cipher = EVP_camellia_128_cbc();
else if (!strcmp(*args, "-camellia192"))
cipher = EVP_camellia_192_cbc();
else if (!strcmp(*args, "-camellia256"))
cipher = EVP_camellia_256_cbc();
#endif
else if (!strcmp(*args, "-text"))
flags |= PKCS7_TEXT;
else if (!strcmp(*args, "-nointern"))
flags |= PKCS7_NOINTERN;
else if (!strcmp(*args, "-noverify"))
flags |= PKCS7_NOVERIFY;
else if (!strcmp(*args, "-nochain"))
flags |= PKCS7_NOCHAIN;
else if (!strcmp(*args, "-nocerts"))
flags |= PKCS7_NOCERTS;
else if (!strcmp(*args, "-noattr"))
flags |= PKCS7_NOATTR;
else if (!strcmp(*args, "-nodetach"))
flags &= ~PKCS7_DETACHED;
else if (!strcmp(*args, "-nosmimecap"))
flags |= PKCS7_NOSMIMECAP;
else if (!strcmp(*args, "-binary"))
flags |= PKCS7_BINARY;
else if (!strcmp(*args, "-nosigs"))
flags |= PKCS7_NOSIGS;
else if (!strcmp(*args, "-stream"))
indef = 1;
else if (!strcmp(*args, "-indef"))
indef = 1;
else if (!strcmp(*args, "-noindef"))
indef = 0;
else if (!strcmp(*args, "-nooldmime"))
flags |= PKCS7_NOOLDMIMETYPE;
else if (!strcmp(*args, "-crlfeol"))
flags |= PKCS7_CRLFEOL;
#ifndef OPENSSL_NO_ENGINE
else if (!strcmp(*args, "-engine")) {
if (!args[1])
goto argerr;
engine = *++args;
}
#endif
else if (!strcmp(*args, "-passin")) {
if (!args[1])
goto argerr;
passargin = *++args;
} else if (!strcmp(*args, "-to")) {
if (!args[1])
goto argerr;
to = *++args;
} else if (!strcmp(*args, "-from")) {
if (!args[1])
goto argerr;
from = *++args;
} else if (!strcmp(*args, "-subject")) {
if (!args[1])
goto argerr;
subject = *++args;
} else if (!strcmp(*args, "-signer")) {
if (!args[1])
goto argerr;
/* If previous -signer argument add signer to list */
if (signerfile) {
if (!sksigners)
sksigners = sk_OPENSSL_STRING_new_null();
sk_OPENSSL_STRING_push(sksigners, signerfile);
if (!keyfile)
keyfile = signerfile;
if (!skkeys)
skkeys = sk_OPENSSL_STRING_new_null();
sk_OPENSSL_STRING_push(skkeys, keyfile);
keyfile = NULL;
}
signerfile = *++args;
} else if (!strcmp(*args, "-recip")) {
if (!args[1])
goto argerr;
recipfile = *++args;
} else if (!strcmp(*args, "-md")) {
if (!args[1])
goto argerr;
sign_md = EVP_get_digestbyname(*++args);
if (sign_md == NULL) {
BIO_printf(bio_err, "Unknown digest %s\n",
*args);
goto argerr;
}
} else if (!strcmp(*args, "-inkey")) {
if (!args[1])
goto argerr;
/* If previous -inkey arument add signer to list */
if (keyfile) {
if (!signerfile) {
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
goto argerr;
}
if (!sksigners)
sksigners = sk_OPENSSL_STRING_new_null();
sk_OPENSSL_STRING_push(sksigners, signerfile);
signerfile = NULL;
if (!skkeys)
skkeys = sk_OPENSSL_STRING_new_null();
sk_OPENSSL_STRING_push(skkeys, keyfile);
}
keyfile = *++args;
} else if (!strcmp(*args, "-keyform")) {
if (!args[1])
goto argerr;
keyform = str2fmt(*++args);
} else if (!strcmp(*args, "-certfile")) {
if (!args[1])
goto argerr;
certfile = *++args;
} else if (!strcmp(*args, "-CAfile")) {
if (!args[1])
goto argerr;
CAfile = *++args;
} else if (!strcmp(*args, "-CApath")) {
if (!args[1])
goto argerr;
CApath = *++args;
} else if (!strcmp(*args, "-in")) {
if (!args[1])
goto argerr;
infile = *++args;
} else if (!strcmp(*args, "-inform")) {
if (!args[1])
goto argerr;
informat = str2fmt(*++args);
} else if (!strcmp(*args, "-outform")) {
if (!args[1])
goto argerr;
outformat = str2fmt(*++args);
} else if (!strcmp(*args, "-out")) {
if (!args[1])
goto argerr;
outfile = *++args;
} else if (!strcmp(*args, "-content")) {
if (!args[1])
goto argerr;
contfile = *++args;
} else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
continue;
else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL)
badarg = 1;
args++;
}
if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) {
BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
goto argerr;
}
if (operation & SMIME_SIGNERS) {
/* Check to see if any final signer needs to be appended */
if (keyfile && !signerfile) {
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
goto argerr;
}
if (signerfile) {
if (!sksigners)
sksigners = sk_OPENSSL_STRING_new_null();
sk_OPENSSL_STRING_push(sksigners, signerfile);
if (!skkeys)
skkeys = sk_OPENSSL_STRING_new_null();
if (!keyfile)
keyfile = signerfile;
sk_OPENSSL_STRING_push(skkeys, keyfile);
}
if (!sksigners) {
BIO_printf(bio_err, "No signer certificate specified\n");
badarg = 1;
}
signerfile = NULL;
keyfile = NULL;
} else if (operation == SMIME_DECRYPT) {
if (!recipfile && !keyfile) {
BIO_printf(bio_err, "No recipient certificate or key specified\n");
badarg = 1;
}
} else if (operation == SMIME_ENCRYPT) {
if (!*args) {
BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
badarg = 1;
}
} else if (!operation)
badarg = 1;
if (badarg) {
argerr:
BIO_printf(bio_err, "Usage smime [options] cert.pem ...\n");
BIO_printf(bio_err, "where options are\n");
BIO_printf(bio_err, "-encrypt encrypt message\n");
BIO_printf(bio_err, "-decrypt decrypt encrypted message\n");
BIO_printf(bio_err, "-sign sign message\n");
BIO_printf(bio_err, "-verify verify signed message\n");
BIO_printf(bio_err, "-pk7out output PKCS#7 structure\n");
#ifndef OPENSSL_NO_DES
BIO_printf(bio_err, "-des3 encrypt with triple DES\n");
BIO_printf(bio_err, "-des encrypt with DES\n");
#endif
#ifndef OPENSSL_NO_RC2
BIO_printf(bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");
BIO_printf(bio_err, "-rc2-64 encrypt with RC2-64\n");
BIO_printf(bio_err, "-rc2-128 encrypt with RC2-128\n");
#endif
#ifndef OPENSSL_NO_AES
BIO_printf(bio_err, "-aes128, -aes192, -aes256\n");
BIO_printf(bio_err, " encrypt PEM output with cbc aes\n");
#endif
#ifndef OPENSSL_NO_CAMELLIA
BIO_printf(bio_err, "-camellia128, -camellia192, -camellia256\n");
BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n");
#endif
BIO_printf(bio_err, "-nointern don't search certificates in message for signer\n");
BIO_printf(bio_err, "-nosigs don't verify message signature\n");
BIO_printf(bio_err, "-noverify don't verify signers certificate\n");
BIO_printf(bio_err, "-nocerts don't include signers certificate when signing\n");
BIO_printf(bio_err, "-nodetach use opaque signing\n");
BIO_printf(bio_err, "-noattr don't include any signed attributes\n");
BIO_printf(bio_err, "-binary don't translate message to text\n");
BIO_printf(bio_err, "-certfile file other certificates file\n");
BIO_printf(bio_err, "-signer file signer certificate file\n");
BIO_printf(bio_err, "-recip file recipient certificate file for decryption\n");
BIO_printf(bio_err, "-in file input file\n");
BIO_printf(bio_err, "-inform arg input format SMIME (default), PEM or DER\n");
BIO_printf(bio_err, "-inkey file input private key (if not signer or recipient)\n");
BIO_printf(bio_err, "-keyform arg input private key format (PEM or ENGINE)\n");
BIO_printf(bio_err, "-out file output file\n");
BIO_printf(bio_err, "-outform arg output format SMIME (default), PEM or DER\n");
BIO_printf(bio_err, "-content file supply or override content for detached signature\n");
BIO_printf(bio_err, "-to addr to address\n");
BIO_printf(bio_err, "-from ad from address\n");
BIO_printf(bio_err, "-subject s subject\n");
BIO_printf(bio_err, "-text include or delete text MIME headers\n");
BIO_printf(bio_err, "-CApath dir trusted certificates directory\n");
BIO_printf(bio_err, "-CAfile file trusted certificates file\n");
BIO_printf(bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n");
BIO_printf(bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
#ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n");
#endif
BIO_printf(bio_err, "-passin arg input file pass phrase source\n");
BIO_printf(bio_err, "cert.pem recipient certificate(s) for encryption\n");
goto end;
}
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine, 0);
#endif
if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
ret = 2;
if (!(operation & SMIME_SIGNERS))
flags &= ~PKCS7_DETACHED;
if (operation & SMIME_OP) {
if (outformat == FORMAT_ASN1)
outmode = "wb";
} else {
if (flags & PKCS7_BINARY)
outmode = "wb";
}
if (operation & SMIME_IP) {
if (informat == FORMAT_ASN1)
inmode = "rb";
} else {
if (flags & PKCS7_BINARY)
inmode = "rb";
}
if (operation == SMIME_ENCRYPT) {
if (!cipher) {
#ifndef OPENSSL_NO_RC2
cipher = EVP_rc2_40_cbc();
#else
BIO_printf(bio_err, "No cipher selected\n");
goto end;
#endif
}
encerts = sk_X509_new_null();
while (*args) {
if (!(cert = load_cert(bio_err, *args, FORMAT_PEM,
NULL, e, "recipient certificate file"))) {
goto end;
}
sk_X509_push(encerts, cert);
cert = NULL;
args++;
}
}
if (certfile) {
if (!(other = load_certs(bio_err, certfile, FORMAT_PEM, NULL,
e, "certificate file"))) {
ERR_print_errors(bio_err);
goto end;
}
}
if (recipfile && (operation == SMIME_DECRYPT)) {
if (!(recip = load_cert(bio_err, recipfile, FORMAT_PEM, NULL,
e, "recipient certificate file"))) {
ERR_print_errors(bio_err);
goto end;
}
}
if (operation == SMIME_DECRYPT) {
if (!keyfile)
keyfile = recipfile;
} else if (operation == SMIME_SIGN) {
if (!keyfile)
keyfile = signerfile;
} else
keyfile = NULL;
if (keyfile) {
key = load_key(bio_err, keyfile, keyform, 0, passin, e,
"signing key file");
if (!key)
goto end;
}
if (infile) {
if (!(in = BIO_new_file(infile, inmode))) {
BIO_printf(bio_err,
"Can't open input file %s\n", infile);
goto end;
}
} else
in = BIO_new_fp(stdin, BIO_NOCLOSE);
if (operation & SMIME_IP) {
if (informat == FORMAT_SMIME)
p7 = SMIME_read_PKCS7(in, &indata);
else if (informat == FORMAT_PEM)
p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
else if (informat == FORMAT_ASN1)
p7 = d2i_PKCS7_bio(in, NULL);
else {
BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
goto end;
}
if (!p7) {
BIO_printf(bio_err, "Error reading S/MIME message\n");
goto end;
}
if (contfile) {
BIO_free(indata);
if (!(indata = BIO_new_file(contfile, "rb"))) {
BIO_printf(bio_err, "Can't read content file %s\n", contfile);
goto end;
}
}
}
if (outfile) {
if (!(out = BIO_new_file(outfile, outmode))) {
BIO_printf(bio_err,
"Can't open output file %s\n", outfile);
goto end;
}
} else {
out = BIO_new_fp(stdout, BIO_NOCLOSE);
}
if (operation == SMIME_VERIFY) {
if (!(store = setup_verify(bio_err, CAfile, CApath)))
goto end;
X509_STORE_set_verify_cb(store, smime_cb);
if (vpm)
X509_STORE_set1_param(store, vpm);
}
ret = 3;
if (operation == SMIME_ENCRYPT) {
if (indef)
flags |= PKCS7_STREAM;
p7 = PKCS7_encrypt(encerts, in, cipher, flags);
} else if (operation & SMIME_SIGNERS) {
int i;
/*
* If detached data content we only enable streaming if
* S/MIME output format.
*/
if (operation == SMIME_SIGN) {
if (flags & PKCS7_DETACHED) {
if (outformat == FORMAT_SMIME)
flags |= PKCS7_STREAM;
} else if (indef)
flags |= PKCS7_STREAM;
flags |= PKCS7_PARTIAL;
p7 = PKCS7_sign(NULL, NULL, other, in, flags);
if (!p7)
goto end;
} else
flags |= PKCS7_REUSE_DIGEST;
for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
signerfile = sk_OPENSSL_STRING_value(sksigners, i);
keyfile = sk_OPENSSL_STRING_value(skkeys, i);
signer = load_cert(bio_err, signerfile, FORMAT_PEM, NULL,
e, "signer certificate");
if (!signer)
goto end;
key = load_key(bio_err, keyfile, keyform, 0, passin, e,
"signing key file");
if (!key)
goto end;
if (!PKCS7_sign_add_signer(p7, signer, key,
sign_md, flags))
goto end;
X509_free(signer);
signer = NULL;
EVP_PKEY_free(key);
key = NULL;
}
/* If not streaming or resigning finalize structure */
if ((operation == SMIME_SIGN) && !(flags & PKCS7_STREAM)) {
if (!PKCS7_final(p7, in, flags))
goto end;
}
}
if (!p7) {
BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
goto end;
}
ret = 4;
if (operation == SMIME_DECRYPT) {
if (!PKCS7_decrypt(p7, key, recip, out, flags)) {
BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
goto end;
}
} else if (operation == SMIME_VERIFY) {
STACK_OF(X509) * signers;
if (PKCS7_verify(p7, other, store, indata, out, flags))
BIO_printf(bio_err, "Verification successful\n");
else {
BIO_printf(bio_err, "Verification failure\n");
goto end;
}
signers = PKCS7_get0_signers(p7, other, flags);
if (!save_certs(signerfile, signers)) {
BIO_printf(bio_err, "Error writing signers to %s\n",
signerfile);
ret = 5;
goto end;
}
sk_X509_free(signers);
} else if (operation == SMIME_PK7OUT)
PEM_write_bio_PKCS7(out, p7);
else {
if (to)
BIO_printf(out, "To: %s\n", to);
if (from)
BIO_printf(out, "From: %s\n", from);
if (subject)
BIO_printf(out, "Subject: %s\n", subject);
if (outformat == FORMAT_SMIME) {
if (operation == SMIME_RESIGN)
SMIME_write_PKCS7(out, p7, indata, flags);
else
SMIME_write_PKCS7(out, p7, in, flags);
} else if (outformat == FORMAT_PEM)
PEM_write_bio_PKCS7_stream(out, p7, in, flags);
else if (outformat == FORMAT_ASN1)
i2d_PKCS7_bio_stream(out, p7, in, flags);
else {
BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
goto end;
}
}
ret = 0;
end:
if (ret)
ERR_print_errors(bio_err);
sk_X509_pop_free(encerts, X509_free);
sk_X509_pop_free(other, X509_free);
if (vpm)
X509_VERIFY_PARAM_free(vpm);
if (sksigners)
sk_OPENSSL_STRING_free(sksigners);
if (skkeys)
sk_OPENSSL_STRING_free(skkeys);
X509_STORE_free(store);
X509_free(cert);
X509_free(recip);
X509_free(signer);
EVP_PKEY_free(key);
PKCS7_free(p7);
BIO_free(in);
BIO_free(indata);
BIO_free_all(out);
free(passin);
return (ret);
}
int
main(int argc, char **argv)
{
BIO *bio_in, *bio_content, *bio_out, *bio_cert, *bio_pkey;
STACK_OF(X509) *certs;
const EVP_CIPHER *cipher;
EVP_PKEY *pkey;
X509_STORE *store;
X509 *cert;
PKCS7 *p7;
size_t len;
char *out;
int flags;
ERR_load_crypto_strings();
OpenSSL_add_all_algorithms();
/*
* A bunch of setup...
*/
cipher = EVP_aes_256_cbc();
if (cipher == NULL)
fatal("cipher");
certs = sk_X509_new_null();
if (certs == NULL)
fatal("sk_X509_new_null");
bio_cert = BIO_new_mem_buf((char *)certificate, sizeof(certificate));
if (bio_cert == NULL)
fatal("BIO_new_mem_buf certificate");
cert = PEM_read_bio_X509_AUX(bio_cert, NULL, NULL, NULL);
if (cert == NULL)
fatal("PEM_read_bio_X509_AUX");
sk_X509_push(certs, cert);
store = X509_STORE_new();
if (store == NULL)
fatal("X509_STORE_new");
X509_STORE_set_verify_cb(store, x509_store_callback);
bio_pkey = BIO_new_mem_buf((char *)private_key, sizeof(private_key));
if (bio_pkey == NULL)
fatal("BIO_new_mem_buf private_key");
pkey = PEM_read_bio_PrivateKey(bio_pkey, NULL, NULL, NULL);
if (pkey == NULL)
fatal("PEM_read_bio_PrivateKey");
bio_content = BIO_new_mem_buf((char *)message, sizeof(message));
if (bio_content == NULL)
fatal("BIO_new_mem_buf message");
/*
* Encrypt and then decrypt.
*/
if (BIO_reset(bio_content) != 1)
fatal("BIO_reset");
bio_out = BIO_new(BIO_s_mem());
if (bio_out == NULL)
fatal("BIO_new");
p7 = PKCS7_encrypt(certs, bio_content, cipher, 0);
if (p7 == NULL)
fatal("PKCS7_encrypt");
if (PEM_write_bio_PKCS7(bio_out, p7) != 1)
fatal("PEM_write_bio_PKCS7");
PKCS7_free(p7);
bio_in = bio_out;
bio_out = BIO_new(BIO_s_mem());
if (bio_out == NULL)
fatal("BIO_new");
p7 = PEM_read_bio_PKCS7(bio_in, NULL, NULL, NULL);
if (p7 == NULL)
fatal("PEM_read_bio_PKCS7");
if (PKCS7_decrypt(p7, pkey, cert, bio_out, 0) != 1)
fatal("PKCS7_decrypt");
len = BIO_get_mem_data(bio_out, &out);
message_compare(out, len);
BIO_free(bio_out);
/*
* Sign and then verify.
*/
if (BIO_reset(bio_content) != 1)
fatal("BIO_reset");
bio_out = BIO_new(BIO_s_mem());
if (bio_out == NULL)
fatal("BIO_new");
p7 = PKCS7_sign(cert, pkey, certs, bio_content, 0);
if (p7 == NULL)
fatal("PKCS7_sign");
if (PEM_write_bio_PKCS7(bio_out, p7) != 1)
fatal("PEM_write_bio_PKCS7");
PKCS7_free(p7);
bio_in = bio_out;
bio_out = BIO_new(BIO_s_mem());
if (bio_out == NULL)
fatal("BIO_new");
p7 = PEM_read_bio_PKCS7(bio_in, NULL, NULL, NULL);
if (p7 == NULL)
fatal("PEM_read_bio_PKCS7");
if (PKCS7_verify(p7, certs, store, NULL, bio_out, 0) != 1)
fatal("PKCS7_verify");
len = BIO_get_mem_data(bio_out, &out);
message_compare(out, len);
BIO_free(bio_in);
BIO_free(bio_out);
/*
* Sign and then verify with a detached signature.
*/
if (BIO_reset(bio_content) != 1)
fatal("BIO_reset");
bio_out = BIO_new(BIO_s_mem());
if (bio_out == NULL)
fatal("BIO_new");
flags = PKCS7_DETACHED|PKCS7_PARTIAL;
p7 = PKCS7_sign(NULL, NULL, NULL, bio_content, flags);
if (p7 == NULL)
fatal("PKCS7_sign");
if (PKCS7_sign_add_signer(p7, cert, pkey, NULL, flags) == NULL)
fatal("PKCS7_sign_add_signer");
if (PKCS7_final(p7, bio_content, flags) != 1)
fatal("PKCS7_final");
if (PEM_write_bio_PKCS7(bio_out, p7) != 1)
fatal("PEM_write_bio_PKCS7");
PKCS7_free(p7);
/* bio_out contains only the detached signature. */
bio_in = bio_out;
if (BIO_reset(bio_content) != 1)
fatal("BIO_reset");
bio_out = BIO_new(BIO_s_mem());
if (bio_out == NULL)
fatal("BIO_new");
p7 = PEM_read_bio_PKCS7(bio_in, NULL, NULL, NULL);
if (p7 == NULL)
fatal("PEM_read_bio_PKCS7");
if (PKCS7_verify(p7, certs, store, bio_content, bio_out, flags) != 1)
fatal("PKCS7_verify");
len = BIO_get_mem_data(bio_out, &out);
message_compare(out, len);
BIO_free(bio_in);
BIO_free(bio_out);
BIO_free(bio_content);
return 0;
}
/*
* Wrap data in PKCS#7 envelopes and base64-encode the result.
* Data is PKCS#10 request in PKCSReq, or pkcs7_issuer_and_subject
* structure in GetCertInitial and PKCS7_ISSUER_AND_SERIAL in
* GetCert and GETCrl.
*/
int pkcs7_wrap(struct scep *s) {
BIO *databio = NULL;
BIO *encbio = NULL;
BIO *pkcs7bio = NULL;
BIO *memorybio = NULL;
BIO *outbio = NULL;
BIO *base64bio = NULL;
unsigned char *buffer = NULL;
int rc, len = 0;
STACK_OF(X509) *recipients;
PKCS7 *p7enc;
PKCS7_SIGNER_INFO *si;
STACK_OF(X509_ATTRIBUTE) *attributes;
X509 *signercert = NULL;
EVP_PKEY *signerkey = NULL;
/* Create a new sender nonce for all messages
* XXXXXXXXXXXXXX should it be per transaction? */
s->sender_nonce_len = 16;
s->sender_nonce = (unsigned char *)malloc(s->sender_nonce_len);
RAND_bytes(s->sender_nonce, s->sender_nonce_len);
/* Prepare data payload */
switch(s->request_type) {
case SCEP_REQUEST_PKCSREQ:
/*
* Set printable message type
* We set this later as an autheticated attribute
* "messageType".
*/
s->request_type_str = SCEP_REQUEST_PKCSREQ_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (v_flag)
printf("%s: creating inner PKCS#7\n", pname);
/* Read request in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_X509_REQ_bio(databio, request)) <= 0) {
fprintf(stderr, "%s: error writing "
"certificate request in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERTINIT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERTINIT_STR;
/* Signer cert */
signercert = s->signercert;
signerkey = s->signerkey;
/* Create inner PKCS#7 */
if (v_flag)
printf("%s: creating inner PKCS#7\n", pname);
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_pkcs7_issuer_and_subject_bio(databio,
s->ias_getcertinit)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCertInitial data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCERT:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCERT_STR;
/* Signer cert */
signercert = localcert;
signerkey = rsa;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_PKCS7_ISSUER_AND_SERIAL_bio(databio,
s->ias_getcert)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCert data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
case SCEP_REQUEST_GETCRL:
/* Set printable message type */
s->request_type_str = SCEP_REQUEST_GETCRL_STR;
/* Signer cert */
signercert = localcert;
signerkey = rsa;
/* Read data in memory bio */
databio = BIO_new(BIO_s_mem());
if ((rc = i2d_PKCS7_ISSUER_AND_SERIAL_bio(databio,
s->ias_getcrl)) <= 0) {
fprintf(stderr, "%s: error writing "
"GetCert data in bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(databio);
BIO_set_flags(databio, BIO_FLAGS_MEM_RDONLY);
break;
}
/* Below this is the common code for all request_type */
/* Read in the payload */
s->request_len = BIO_get_mem_data(databio, &s->request_payload);
if (v_flag)
printf("%s: data payload size: %d bytes\n", pname,
s->request_len);
BIO_free(databio);
/* Create encryption certificate stack */
if ((recipients = sk_X509_new(NULL)) == NULL) {
fprintf(stderr, "%s: error creating "
"certificate stack\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Use different CA cert for encryption if requested */
if (e_flag) {
if (sk_X509_push(recipients, encert) <= 0) {
fprintf(stderr, "%s: error adding recipient encryption "
"certificate\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Use same CA cert also for encryption */
} else {
if (sk_X509_push(recipients, cacert) <= 0) {
fprintf(stderr, "%s: error adding recipient encryption "
"certificate\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
}
/* Create BIO for encryption */
if ((encbio = BIO_new_mem_buf(s->request_payload,
s->request_len)) == NULL) {
fprintf(stderr, "%s: error creating data " "bio\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Encrypt */
if (!(p7enc = PKCS7_encrypt(recipients, encbio,
enc_alg, PKCS7_BINARY))) {
fprintf(stderr, "%s: request payload encrypt failed\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: successfully encrypted payload\n", pname);
/* Write encrypted data */
memorybio = BIO_new(BIO_s_mem());
if (i2d_PKCS7_bio(memorybio, p7enc) <= 0) {
fprintf(stderr, "%s: error writing encrypted data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
BIO_flush(memorybio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
len = BIO_get_mem_data(memorybio, &buffer);
if (v_flag)
printf("%s: envelope size: %d bytes\n", pname, len);
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, p7enc);
}
BIO_free(memorybio);
/* Create outer PKCS#7 */
if (v_flag)
printf("%s: creating outer PKCS#7\n", pname);
s->request_p7 = PKCS7_new();
if (s->request_p7 == NULL) {
fprintf(stderr, "%s: failed creating PKCS#7 for signing\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (!PKCS7_set_type(s->request_p7, NID_pkcs7_signed)) {
fprintf(stderr, "%s: failed setting PKCS#7 type\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Add signer certificate and signature */
PKCS7_add_certificate(s->request_p7, signercert);
if ((si = PKCS7_add_signature(s->request_p7,
signercert, signerkey, sig_alg)) == NULL) {
fprintf(stderr, "%s: error adding PKCS#7 signature\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: signature added successfully\n", pname);
/* Set signed attributes */
if (v_flag)
printf("%s: adding signed attributes\n", pname);
attributes = sk_X509_ATTRIBUTE_new_null();
add_attribute_string(attributes, nid_transId, s->transaction_id);
add_attribute_string(attributes, nid_messageType, s->request_type_str);
add_attribute_octet(attributes, nid_senderNonce, s->sender_nonce,
s->sender_nonce_len);
PKCS7_set_signed_attributes(si, attributes);
/* Add contentType */
if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
V_ASN1_OBJECT, OBJ_nid2obj(NID_pkcs7_data))) {
fprintf(stderr, "%s: error adding NID_pkcs9_contentType\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Create new content */
if (!PKCS7_content_new(s->request_p7, NID_pkcs7_data)) {
fprintf(stderr, "%s: failed setting PKCS#7 content type\n",
pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
/* Write data */
pkcs7bio = PKCS7_dataInit(s->request_p7, NULL);
if (pkcs7bio == NULL) {
fprintf(stderr, "%s: error opening bio for writing PKCS#7 "
"data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (len != BIO_write(pkcs7bio, buffer, len)) {
fprintf(stderr, "%s: error writing PKCS#7 data\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (v_flag)
printf("%s: PKCS#7 data written successfully\n", pname);
/* Finalize PKCS#7 */
if (!PKCS7_dataFinal(s->request_p7, pkcs7bio)) {
fprintf(stderr, "%s: error finalizing outer PKCS#7\n", pname);
ERR_print_errors_fp(stderr);
exit (SCEP_PKISTATUS_P7);
}
if (d_flag) {
printf("%s: printing PEM fomatted PKCS#7\n", pname);
PEM_write_PKCS7(stdout, s->request_p7);
}
/* base64-encode the data */
if (v_flag)
printf("%s: applying base64 encoding\n",pname);
/* Create base64 filtering bio */
memorybio = BIO_new(BIO_s_mem());
base64bio = BIO_new(BIO_f_base64());
outbio = BIO_push(base64bio, memorybio);
/* Copy PKCS#7 */
i2d_PKCS7_bio(outbio, s->request_p7);
BIO_flush(outbio);
BIO_set_flags(memorybio, BIO_FLAGS_MEM_RDONLY);
s->request_len = BIO_get_mem_data(memorybio, &s->request_payload);
if (v_flag)
printf("%s: base64 encoded payload size: %d bytes\n",
pname, s->request_len);
BIO_free(outbio);
return (0);
}
int SCEP_MSG_encrypt( SCEP_MSG *msg, X509 *recip_cert, EVP_CIPHER cipher ) {
BIO *inbio = NULL;
int ret = 0;
int len = 0;
BIO *debug_bio = NULL;
if ((debug_bio=BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(debug_bio,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
// printf("%s:%d Debug... *** ENCRYPT ***\n", __FILE__, __LINE__ );
/* Create the stack of the recipient(s) certificate(s) */
if( recip_cert ) {
STACK_OF(X509) *sk = NULL;
if((sk = sk_X509_new(NULL)) == NULL) goto err;
sk_X509_push( sk, recip_cert );
msg->env_data.recip_info.sk_recip_certs = sk;
} else {
return 0;
}
inbio = BIO_new ( BIO_s_mem());
/* Any message type has different data to be encrypted
* and checks to be done */
switch ( msg->messageType ) {
case MSG_PKCSREQ:
/* There must be a request added to the msg */
if(! msg->env_data.content.req ) goto err;
/* Write the request to the inbio */
if( i2d_X509_REQ_bio( inbio, msg->env_data.content.req ) <= 0)
goto err;
break;
case MSG_GETCRL:
case MSG_GETCERT:
if( !msg->env_data.content.ias ) goto err;
len = i2d_PKCS7_ias_bio( inbio, msg->env_data.content.ias);
if( len <= 0 ) goto err;
break;
case MSG_CERTREP:
// printf("%s:%d: Debug ... Case: MSG_CERTREP\n",
// __FILE__, __LINE__ );
/* if ( msg->env_data.content.issued_cert ) {
len = i2d_X509_bio ( inbio,
msg->env_data.content.issued_cert );
}
*/
if ( msg->env_data.p7 )
len = i2d_PKCS7_bio( inbio, msg->env_data.p7 );
break;
default:
printf("%s:%d Unsupported MessageType %d (%s)\n",
__FILE__, __LINE__, msg->messageType,
SCEP_type2str(msg->messageType) );
}
BIO_flush( inbio );
BIO_set_flags( inbio, BIO_FLAGS_MEM_RDONLY );
/* Check for the recipients certs presence */
if( !msg->env_data.recip_info.sk_recip_certs ) goto err;
/* If already present an encoded pkcs7, let's free */
if( msg->env_data.p7env )
PKCS7_free( msg->env_data.p7env );
/* Encrypt Data */
msg->env_data.p7env = PKCS7_encrypt(
msg->env_data.recip_info.sk_recip_certs,
inbio, &cipher, PKCS7_BINARY );
ERR_clear_error();
/* If an error occourred pkcs7 is empty */
if( msg->env_data.p7env == NULL ) goto err;
ret = 1;
err:
if (inbio) BIO_free( inbio );
return ret;
}
