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);
}
// Write signed variable
EFI_STATUS SetSignedVariable(IN CHAR16 *DatabaseName,
IN EFI_GUID *DatabaseGuid,
IN UINT32 Attributes,
IN VOID *Database,
IN UINTN DatabaseSize)
{
EFI_STATUS Status;
EFI_VARIABLE_AUTHENTICATION_2 *Authentication;
UINTN Size, NameLen;
UINTN DataSize = 0;
EFI_TIME Timestamp;
VOID *Data = NULL;
BIO *BioData = NULL;
PKCS7 *p7;
X509 *Certificate = NULL;
EVP_PKEY *PrivateKey = NULL;
const EVP_MD *md;
// Check parameters
if ((DatabaseName == NULL) || (DatabaseGuid == NULL)) {
return EFI_INVALID_PARAMETER;
}
DBG("Setting secure variable: %g %s 0x%X (0x%X)\n", DatabaseGuid, DatabaseName, Database, DatabaseSize);
NameLen = StrLen(DatabaseName);
if (NameLen == 0) {
return EFI_INVALID_PARAMETER;
}
// Get the current time
DBG("Getting timestamp ...\n");
Status = GetUTCTime(&Timestamp);
if (EFI_ERROR(Status)) {
return Status;
}
DBG("Timestamp: %t\n", Timestamp);
// In user mode we need to sign the database with exchange key
if (!gSettings.SecureBootSetupMode) {
// Initialize the cyphers and digests
ERR_load_crypto_strings();
OpenSSL_add_all_digests();
OpenSSL_add_all_ciphers();
// Create signing certificate
BioData = BIO_new_mem_buf((void *)gSecureBootExchangeKey, sizeof(gSecureBootExchangeKey));
if (BioData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Certificate = PEM_read_bio_X509(BioData, NULL, NULL, NULL);
BIO_free(BioData);
if (Certificate == NULL) {
return EFI_OUT_OF_RESOURCES;
}
// Create signing private key
BioData = BIO_new_mem_buf((void *)gSecureBootExchangePrivateKey, sizeof(gSecureBootExchangePrivateKey));
if (BioData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
PrivateKey = PEM_read_bio_PrivateKey(BioData, NULL, NULL, NULL);
BIO_free(BioData);
if (PrivateKey == NULL) {
X509_free(Certificate);
return EFI_OUT_OF_RESOURCES;
}
// Do the actual signing process
BioData = BIO_new(BIO_s_mem());
BIO_write(BioData, DatabaseName, (int)StrLen(DatabaseName));
BIO_write(BioData, DatabaseGuid, sizeof(EFI_GUID));
BIO_write(BioData, &Attributes, sizeof(UINT32));
BIO_write(BioData, &Timestamp, sizeof(EFI_TIME));
BIO_write(BioData, Database, (int)DatabaseSize);
md = EVP_get_digestbyname("SHA256");
p7 = PKCS7_new();
PKCS7_set_type(p7, NID_pkcs7_signed);
PKCS7_content_new(p7, NID_pkcs7_data);
PKCS7_sign_add_signer(p7, Certificate, PrivateKey, md, PKCS7_BINARY | PKCS7_DETACHED | PKCS7_NOSMIMECAP);
PKCS7_set_detached(p7, 1);
PKCS7_final(p7, BioData, PKCS7_BINARY | PKCS7_DETACHED | PKCS7_NOSMIMECAP);
X509_free(Certificate);
EVP_PKEY_free(PrivateKey);
DataSize = i2d_PKCS7(p7, NULL);
Data = AllocateZeroPool(DataSize);
i2d_PKCS7(p7, (unsigned char **)&Data);
PKCS7_free(p7);
// Set the authentication buffer size
Size = sizeof(EFI_TIME) + sizeof(EFI_GUID) + sizeof(UINT32) + sizeof(UINT16) + sizeof(UINT16) + DataSize;
} else {
// In setup mode we don't need to sign, so just set the database
DBG("In setup mode, not signing ...\n");
Size = sizeof(EFI_TIME) + sizeof(EFI_GUID) + sizeof(UINT32) + sizeof(UINT16) + sizeof(UINT16) + DatabaseSize;
}
// Create the authentication buffer
DBG("Creating authentication ...\n");
Authentication = (EFI_VARIABLE_AUTHENTICATION_2 *)AllocateZeroPool(Size);
if (Authentication == NULL) {
if (Data != NULL) {
FreePool(Data);
}
return EFI_OUT_OF_RESOURCES;
}
// Set the certificate elements
CopyMem(&(Authentication->TimeStamp), &Timestamp, sizeof(EFI_TIME));
Authentication->AuthInfo.Hdr.dwLength = (UINT32)(sizeof(EFI_GUID) + sizeof(UINT32) + sizeof(UINT16) + sizeof(UINT16) + DataSize);
Authentication->AuthInfo.Hdr.wRevision = 0x0200;
Authentication->AuthInfo.Hdr.wCertificateType = WIN_CERT_TYPE_EFI_GUID;
CopyMem(&(Authentication->AuthInfo.CertType), &gEfiCertPkcs7Guid, sizeof(EFI_GUID));
// Copy the data into the authentication
if (Data != NULL) {
CopyMem(((UINT8 *)Authentication) + sizeof(EFI_TIME) + sizeof(EFI_GUID) + sizeof(UINT32) + sizeof(UINT16) + sizeof(UINT16), Data, DataSize);
FreePool(Data);
} else {
CopyMem(((UINT8 *)Authentication) + sizeof(EFI_TIME) + sizeof(EFI_GUID) + sizeof(UINT32) + sizeof(UINT16) + sizeof(UINT16), Database, DatabaseSize); //Payload, PayloadSize);
}
DBG("Writing secure variable 0x%X (0x%X) ...\n", Authentication, Size);
// Write the database variable
Status = gRT->SetVariable(DatabaseName, DatabaseGuid, SET_DATABASE_ATTRIBUTES, Size, Authentication);
// Cleanup the authentication buffer
FreePool(Authentication);
return Status;
}
static int add_auth_descriptor(varsign_context *ctx, unsigned char dont_sign)
{
EFI_VARIABLE_AUTHENTICATION_2 *auth;
int rc=0, len=0, flags=0;
EFI_TIME timestamp;
const EVP_MD *md;
BIO *data_bio = NULL;
PKCS7 *p7;
UINT8 *signpkg;
if (set_timestamp(×tamp))
return -1;
/* create a BIO for our variable data, containing:
* * Variablename (not including trailing nul)
* * VendorGUID
* * Attributes
* * TimeStamp
* * Data
*/
if (dont_sign == 0)
{
data_bio = BIO_new(BIO_s_mem());
BIO_write(data_bio, ctx->var_name, ctx->var_name_bytes);
BIO_write(data_bio, &ctx->var_guid, sizeof(ctx->var_guid));
BIO_write(data_bio, &ctx->var_attrs, sizeof(ctx->var_attrs));
BIO_write(data_bio, ×tamp, sizeof(timestamp));
BIO_write(data_bio, ctx->data, ctx->data_len);
md = EVP_get_digestbyname("SHA256");
p7 = PKCS7_new();
flags = PKCS7_BINARY | PKCS7_DETACHED | PKCS7_NOSMIMECAP;;
PKCS7_set_type(p7, NID_pkcs7_signed);
PKCS7_content_new(p7, NID_pkcs7_data);
PKCS7_sign_add_signer(p7, ctx->cert, ctx->key, md, flags);
PKCS7_set_detached(p7, 1);
rc = PKCS7_final(p7, data_bio, flags);
if (!rc) {
fprintf(stderr, "Error signing variable data\n");
ERR_print_errors_fp(stderr);
BIO_free_all(data_bio);
return -1;
}
len = i2d_PKCS7(p7, NULL);
} else {
len = 0;
}
/* set up our auth descriptor */
auth = talloc_size(ctx, len + offsetof (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo.CertData));
auth->TimeStamp = timestamp;
auth->AuthInfo.Hdr.dwLength = len + offsetof (WIN_CERTIFICATE_UEFI_GUID, CertData);
auth->AuthInfo.Hdr.wRevision = 0x0200;
auth->AuthInfo.Hdr.wCertificateType = 0x0EF1;
auth->AuthInfo.CertType = cert_pkcs7_guid;
if (dont_sign == 0)
{
signpkg = auth->AuthInfo.CertData;
i2d_PKCS7(p7, &signpkg);
}
ctx->auth_descriptor = auth;
ctx->auth_descriptor_len = len + offsetof (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo.CertData);
BIO_free_all(data_bio);
return 0;
}
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;
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;
char *inrand = NULL;
int need_rand = 0;
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;
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, "-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_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, "-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;
else if (!strcmp(*args,"-rand"))
{
if (!args[1])
goto argerr;
args++;
inrand = *args;
need_rand = 1;
}
#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;
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)
{
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_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_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")))
{
#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 (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);
#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(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 (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);
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);
if (passin) OPENSSL_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;
}
int main(int argc, char* argv[])
{
PKCS7 *p7, *innerp7;
FILE *fp = NULL;
EVP_PKEY *pkey = NULL;
PKCS7_SIGNER_INFO *p7i;
PKCS7_RECIP_INFO *pri;
BIO *mybio, *inbio;
X509 *user;
X509_ALGOR *md;
int ret, len;
unsigned char data[2048], *p, *buf;
unsigned char* greet = "hello openssl";
unsigned long errorno;
unsigned char* errordesc;
OpenSSL_add_all_algorithms(); //必须要显式进行调用
inbio = BIO_new(BIO_s_mem());
ret = BIO_write(inbio, greet, strlen(greet));
p7 = PKCS7_new();
ret = PKCS7_set_type(p7, NID_pkcs7_signedAndEnveloped);
//加载用户证书
fp = fopen("mycert4p12.cer", "rb");
if(fp == NULL) return 0;
len = fread(data, 1, 1024, fp);
fclose(fp);
p = data;
user = d2i_X509(NULL, (const unsigned char**)&p, len);
ret = PKCS7_add_certificate(p7, user);
pri = PKCS7_add_recipient(p7, user);
//读取私钥
fp = fopen("myprivkey.pem", "rb");
if(fp == NULL) return 0;
len = fread(data, 1, 1024, fp);
fclose(fp);
p = data;
pkey = d2i_PrivateKey(EVP_PKEY_RSA, NULL, (const unsigned char**)&p, len);
//第一个用户增加SignerInfo到列表中
p7i = PKCS7_add_signature(p7, user, pkey, EVP_md5());
//加载用户证书
fp = fopen("user2.cer", "rb");
if(fp == NULL) return 0;
len = fread(data, 1, 1024, fp);
fclose(fp);
p = data;
user = d2i_X509(NULL, (const unsigned char**)&p, len);
ret = PKCS7_add_certificate(p7, user);
pri = PKCS7_add_recipient(p7, user);
//读取私钥
fp = fopen("user2_privatekey.pem", "rb");
if(fp == NULL) return 0;
len = fread(data, 1, 1024, fp);
fclose(fp);
p = data;
pkey = d2i_PrivateKey(EVP_PKEY_RSA, NULL, (const unsigned char**)&p, len);
//第二个签名者增加到SignerInfo列表中
p7i = PKCS7_add_signature(p7, user, pkey, EVP_md5());
ret = PKCS7_set_cipher(p7, EVP_des_ede3_cbc());
ret = PKCS7_final(p7, inbio, 0); //制作数字信封
len = i2d_PKCS7(p7, NULL);
p = buf = malloc(len);
len = i2d_PKCS7(p7, &p);
printf("in i2d len = %d\n", len);
fp = fopen("p7signandenv.cer", "wb");
fwrite(buf, len, 1, fp);
fclose(fp);
PKCS7_free(p7);
}