int
gost2814789_get_asn1_params(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
int ret = -1;
int len;
GOST_CIPHER_PARAMS *gcp = NULL;
EVP_GOST2814789_CTX *c = ctx->cipher_data;
unsigned char *p;
if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE)
return ret;
p = params->value.sequence->data;
gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
params->value.sequence->length);
len = gcp->iv->length;
if (len != ctx->cipher->iv_len) {
GOST_CIPHER_PARAMS_free(gcp);
GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS,
GOST_R_INVALID_IV_LENGTH);
return -1;
}
if (!Gost2814789_set_sbox(&c->ks, OBJ_obj2nid(gcp->enc_param_set))) {
GOST_CIPHER_PARAMS_free(gcp);
return -1;
}
c->param_nid = OBJ_obj2nid(gcp->enc_param_set);
memcpy(ctx->oiv, gcp->iv->data, len);
memcpy(ctx->iv, gcp->iv->data, len);
GOST_CIPHER_PARAMS_free(gcp);
return 1;
}
int
EAC_CTX_init_ef_cardsecurity(const unsigned char *ef_cardsecurity,
size_t ef_cardsecurity_len, EAC_CTX *ctx)
{
PKCS7 *p7 = NULL, *signed_data;
ASN1_OCTET_STRING *os;
int r = 0;
check(ef_cardsecurity, "Invalid arguments");
if (!d2i_PKCS7(&p7, &ef_cardsecurity, ef_cardsecurity_len)
|| !PKCS7_type_is_signed(p7))
goto err;
if (ctx && ctx->ca_ctx &&
!(ctx->ca_ctx->flags & CA_FLAG_DISABLE_PASSIVE_AUTH))
check((CA_passive_authentication(ctx, p7) == 1),
"Failed to perform passive authentication");
signed_data = p7->d.sign->contents;
if (OBJ_obj2nid(signed_data->type) != NID_id_SecurityObject
|| ASN1_TYPE_get(signed_data->d.other) != V_ASN1_OCTET_STRING)
goto err;
os = signed_data->d.other->value.octet_string;
if (!EAC_CTX_init_ef_cardaccess(os->data, os->length, ctx)
|| !ctx || !ctx->ca_ctx || !ctx->ca_ctx->ka_ctx)
goto err;
r = 1;
err:
if (p7)
PKCS7_free(p7);
return r;
}
/* Store parameters into ASN1 structure */
int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx,ASN1_TYPE *params)
{
int ret = -1;
int len;
GOST_CIPHER_PARAMS *gcp = NULL;
unsigned char *p;
struct ossl_gost_cipher_ctx *c=ctx->cipher_data;
if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE)
{
return ret;
}
p = params->value.sequence->data;
gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
params->value.sequence->length);
len = gcp->iv->length;
if (len != ctx->cipher->iv_len)
{
GOST_CIPHER_PARAMS_free(gcp);
GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS,
GOST_R_INVALID_IV_LENGTH);
return -1;
}
if (!gost_cipher_set_param(c,OBJ_obj2nid(gcp->enc_param_set)))
{
GOST_CIPHER_PARAMS_free(gcp);
return -1;
}
memcpy(ctx->oiv, gcp->iv->data, len);
GOST_CIPHER_PARAMS_free(gcp);
return 1;
}
static int dh_cms_encrypt(CMS_RecipientInfo *ri)
{
EVP_PKEY_CTX *pctx;
EVP_PKEY *pkey;
EVP_CIPHER_CTX *ctx;
int keylen;
X509_ALGOR *talg, *wrap_alg = NULL;
ASN1_OBJECT *aoid;
ASN1_BIT_STRING *pubkey;
ASN1_STRING *wrap_str;
ASN1_OCTET_STRING *ukm;
unsigned char *penc = NULL, *dukm = NULL;
int penclen;
size_t dukmlen = 0;
int rv = 0;
int kdf_type, wrap_nid;
const EVP_MD *kdf_md;
pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
if (!pctx)
return 0;
/* Get ephemeral key */
pkey = EVP_PKEY_CTX_get0_pkey(pctx);
if (!CMS_RecipientInfo_kari_get0_orig_id(ri, &talg, &pubkey,
NULL, NULL, NULL))
goto err;
X509_ALGOR_get0(&aoid, NULL, NULL, talg);
/* Is everything uninitialised? */
if (aoid == OBJ_nid2obj(NID_undef)) {
ASN1_INTEGER *pubk;
pubk = BN_to_ASN1_INTEGER(pkey->pkey.dh->pub_key, NULL);
if (!pubk)
goto err;
/* Set the key */
penclen = i2d_ASN1_INTEGER(pubk, &penc);
ASN1_INTEGER_free(pubk);
if (penclen <= 0)
goto err;
ASN1_STRING_set0(pubkey, penc, penclen);
pubkey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
pubkey->flags |= ASN1_STRING_FLAG_BITS_LEFT;
penc = NULL;
X509_ALGOR_set0(talg, OBJ_nid2obj(NID_dhpublicnumber),
V_ASN1_UNDEF, NULL);
}
/* See if custom paraneters set */
kdf_type = EVP_PKEY_CTX_get_dh_kdf_type(pctx);
if (kdf_type <= 0)
goto err;
if (!EVP_PKEY_CTX_get_dh_kdf_md(pctx, &kdf_md))
goto err;
if (kdf_type == EVP_PKEY_DH_KDF_NONE) {
kdf_type = EVP_PKEY_DH_KDF_X9_42;
if (EVP_PKEY_CTX_set_dh_kdf_type(pctx, kdf_type) <= 0)
goto err;
} else if (kdf_type != EVP_PKEY_DH_KDF_X9_42)
/* Unknown KDF */
goto err;
if (kdf_md == NULL) {
/* Only SHA1 supported */
kdf_md = EVP_sha1();
if (EVP_PKEY_CTX_set_dh_kdf_md(pctx, kdf_md) <= 0)
goto err;
} else if (EVP_MD_type(kdf_md) != NID_sha1)
/* Unsupported digest */
goto err;
if (!CMS_RecipientInfo_kari_get0_alg(ri, &talg, &ukm))
goto err;
/* Get wrap NID */
ctx = CMS_RecipientInfo_kari_get0_ctx(ri);
wrap_nid = EVP_CIPHER_CTX_type(ctx);
if (EVP_PKEY_CTX_set0_dh_kdf_oid(pctx, OBJ_nid2obj(wrap_nid)) <= 0)
goto err;
keylen = EVP_CIPHER_CTX_key_length(ctx);
/* Package wrap algorithm in an AlgorithmIdentifier */
wrap_alg = X509_ALGOR_new();
if (!wrap_alg)
goto err;
wrap_alg->algorithm = OBJ_nid2obj(wrap_nid);
wrap_alg->parameter = ASN1_TYPE_new();
if (!wrap_alg->parameter)
goto err;
if (EVP_CIPHER_param_to_asn1(ctx, wrap_alg->parameter) <= 0)
goto err;
if (ASN1_TYPE_get(wrap_alg->parameter) == NID_undef) {
ASN1_TYPE_free(wrap_alg->parameter);
wrap_alg->parameter = NULL;
}
if (EVP_PKEY_CTX_set_dh_kdf_outlen(pctx, keylen) <= 0)
goto err;
if (ukm) {
dukmlen = ASN1_STRING_length(ukm);
dukm = BUF_memdup(ASN1_STRING_data(ukm), dukmlen);
if (!dukm)
goto err;
}
if (EVP_PKEY_CTX_set0_dh_kdf_ukm(pctx, dukm, dukmlen) <= 0)
goto err;
dukm = NULL;
/*
* Now need to wrap encoding of wrap AlgorithmIdentifier into parameter
* of another AlgorithmIdentifier.
*/
penc = NULL;
penclen = i2d_X509_ALGOR(wrap_alg, &penc);
if (!penc || !penclen)
goto err;
wrap_str = ASN1_STRING_new();
if (!wrap_str)
goto err;
ASN1_STRING_set0(wrap_str, penc, penclen);
penc = NULL;
X509_ALGOR_set0(talg, OBJ_nid2obj(NID_id_smime_alg_ESDH),
V_ASN1_SEQUENCE, wrap_str);
rv = 1;
err:
if (penc)
OPENSSL_free(penc);
if (wrap_alg)
X509_ALGOR_free(wrap_alg);
return rv;
}
int MAIN(int argc, char **argv)
{
int i, badops = 0, offset = 0, ret = 1, j;
unsigned int length = 0;
long num, tmplen;
BIO *in = NULL, *out = NULL, *b64 = NULL, *derout = NULL;
int informat, indent = 0, noout = 0, dump = 0, strictpem = 0;
char *infile = NULL, *str = NULL, *prog, *oidfile = NULL, *derfile =
NULL, *name = NULL, *header = NULL;
char *genstr = NULL, *genconf = NULL;
unsigned char *tmpbuf;
const unsigned char *ctmpbuf;
BUF_MEM *buf = NULL;
STACK_OF(OPENSSL_STRING) *osk = NULL;
ASN1_TYPE *at = NULL;
informat = FORMAT_PEM;
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;
prog = argv[0];
argc--;
argv++;
if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
BIO_printf(bio_err, "Memory allocation failure\n");
goto end;
}
while (argc >= 1) {
if (strcmp(*argv, "-inform") == 0) {
if (--argc < 1)
goto bad;
informat = str2fmt(*(++argv));
} else if (strcmp(*argv, "-in") == 0) {
if (--argc < 1)
goto bad;
infile = *(++argv);
} else if (strcmp(*argv, "-out") == 0) {
if (--argc < 1)
goto bad;
derfile = *(++argv);
} else if (strcmp(*argv, "-i") == 0) {
indent = 1;
} else if (strcmp(*argv, "-noout") == 0)
noout = 1;
else if (strcmp(*argv, "-oid") == 0) {
if (--argc < 1)
goto bad;
oidfile = *(++argv);
} else if (strcmp(*argv, "-offset") == 0) {
if (--argc < 1)
goto bad;
offset = atoi(*(++argv));
} else if (strcmp(*argv, "-length") == 0) {
if (--argc < 1)
goto bad;
length = atoi(*(++argv));
if (length == 0)
goto bad;
} else if (strcmp(*argv, "-dump") == 0) {
dump = -1;
} else if (strcmp(*argv, "-dlimit") == 0) {
if (--argc < 1)
goto bad;
dump = atoi(*(++argv));
if (dump <= 0)
goto bad;
} else if (strcmp(*argv, "-strparse") == 0) {
if (--argc < 1)
goto bad;
sk_OPENSSL_STRING_push(osk, *(++argv));
} else if (strcmp(*argv, "-genstr") == 0) {
if (--argc < 1)
goto bad;
genstr = *(++argv);
} else if (strcmp(*argv, "-genconf") == 0) {
if (--argc < 1)
goto bad;
genconf = *(++argv);
} else if (strcmp(*argv, "-strictpem") == 0) {
strictpem = 1;
informat = FORMAT_PEM;
} else {
BIO_printf(bio_err, "unknown option %s\n", *argv);
badops = 1;
break;
}
argc--;
argv++;
}
if (badops) {
bad:
BIO_printf(bio_err, "%s [options] <infile\n", prog);
BIO_printf(bio_err, "where options are\n");
BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n");
BIO_printf(bio_err, " -in arg input file\n");
BIO_printf(bio_err,
" -out arg output file (output format is always DER\n");
BIO_printf(bio_err, " -noout arg don't produce any output\n");
BIO_printf(bio_err, " -offset arg offset into file\n");
BIO_printf(bio_err, " -length arg length of section in file\n");
BIO_printf(bio_err, " -i indent entries\n");
BIO_printf(bio_err, " -dump dump unknown data in hex form\n");
BIO_printf(bio_err,
" -dlimit arg dump the first arg bytes of unknown data in hex form\n");
BIO_printf(bio_err, " -oid file file of extra oid definitions\n");
BIO_printf(bio_err, " -strparse offset\n");
BIO_printf(bio_err,
" a series of these can be used to 'dig' into multiple\n");
BIO_printf(bio_err, " ASN1 blob wrappings\n");
BIO_printf(bio_err,
" -genstr str string to generate ASN1 structure from\n");
BIO_printf(bio_err,
" -genconf file file to generate ASN1 structure from\n");
BIO_printf(bio_err,
" -strictpem do not attempt base64 decode outside PEM markers (-inform \n");
BIO_printf(bio_err, " will be ignored)\n");
goto end;
}
ERR_load_crypto_strings();
in = BIO_new(BIO_s_file());
out = BIO_new(BIO_s_file());
if ((in == NULL) || (out == NULL)) {
ERR_print_errors(bio_err);
goto end;
}
BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
#ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
out = BIO_push(tmpbio, out);
}
#endif
if (oidfile != NULL) {
if (BIO_read_filename(in, oidfile) <= 0) {
BIO_printf(bio_err, "problems opening %s\n", oidfile);
ERR_print_errors(bio_err);
goto end;
}
OBJ_create_objects(in);
}
if (infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, infile) <= 0) {
perror(infile);
goto end;
}
}
if (derfile) {
if (!(derout = BIO_new_file(derfile, "wb"))) {
BIO_printf(bio_err, "problems opening %s\n", derfile);
ERR_print_errors(bio_err);
goto end;
}
}
if (strictpem) {
if (PEM_read_bio(in, &name, &header, (unsigned char **)&str, &num) !=
1) {
BIO_printf(bio_err, "Error reading PEM file\n");
ERR_print_errors(bio_err);
goto end;
}
} else {
if ((buf = BUF_MEM_new()) == NULL)
goto end;
if (!BUF_MEM_grow(buf, BUFSIZ * 8))
goto end; /* Pre-allocate :-) */
if (genstr || genconf) {
num = do_generate(bio_err, genstr, genconf, buf);
if (num < 0) {
ERR_print_errors(bio_err);
goto end;
}
}
else {
if (informat == FORMAT_PEM) {
BIO *tmp;
if ((b64 = BIO_new(BIO_f_base64())) == NULL)
goto end;
BIO_push(b64, in);
tmp = in;
in = b64;
b64 = tmp;
}
num = 0;
for (;;) {
if (!BUF_MEM_grow(buf, (int)num + BUFSIZ))
goto end;
i = BIO_read(in, &(buf->data[num]), BUFSIZ);
if (i <= 0)
break;
num += i;
}
}
str = buf->data;
}
/* If any structs to parse go through in sequence */
if (sk_OPENSSL_STRING_num(osk)) {
tmpbuf = (unsigned char *)str;
tmplen = num;
for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
ASN1_TYPE *atmp;
int typ;
j = atoi(sk_OPENSSL_STRING_value(osk, i));
if (j == 0) {
BIO_printf(bio_err, "'%s' is an invalid number\n",
sk_OPENSSL_STRING_value(osk, i));
continue;
}
tmpbuf += j;
tmplen -= j;
atmp = at;
ctmpbuf = tmpbuf;
at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen);
ASN1_TYPE_free(atmp);
if (!at) {
BIO_printf(bio_err, "Error parsing structure\n");
ERR_print_errors(bio_err);
goto end;
}
typ = ASN1_TYPE_get(at);
if ((typ == V_ASN1_OBJECT)
|| (typ == V_ASN1_NULL)) {
BIO_printf(bio_err, "Can't parse %s type\n",
typ == V_ASN1_NULL ? "NULL" : "OBJECT");
ERR_print_errors(bio_err);
goto end;
}
/* hmm... this is a little evil but it works */
tmpbuf = at->value.asn1_string->data;
tmplen = at->value.asn1_string->length;
}
str = (char *)tmpbuf;
num = tmplen;
}
if (offset >= num) {
BIO_printf(bio_err, "Error: offset too large\n");
goto end;
}
num -= offset;
if ((length == 0) || ((long)length > num))
length = (unsigned int)num;
if (derout) {
if (BIO_write(derout, str + offset, length) != (int)length) {
BIO_printf(bio_err, "Error writing output\n");
ERR_print_errors(bio_err);
goto end;
}
}
if (!noout &&
!ASN1_parse_dump(out, (unsigned char *)&(str[offset]), length,
indent, dump)) {
ERR_print_errors(bio_err);
goto end;
}
ret = 0;
end:
BIO_free(derout);
BIO_free(in);
BIO_free_all(out);
BIO_free(b64);
if (ret != 0)
ERR_print_errors(bio_err);
if (buf != NULL)
BUF_MEM_free(buf);
if (name != NULL)
OPENSSL_free(name);
if (header != NULL)
OPENSSL_free(header);
if (strictpem && str != NULL)
OPENSSL_free(str);
if (at != NULL)
ASN1_TYPE_free(at);
if (osk != NULL)
sk_OPENSSL_STRING_free(osk);
OBJ_cleanup();
apps_shutdown();
OPENSSL_EXIT(ret);
}
/*
* read an attribute of type string
*/
char *sigattr_string(scep_t *scep, char *attrname) {
STACK_OF(X509_ATTRIBUTE) *sig_attribs;
ASN1_OBJECT *asn1_obj;
ASN1_TYPE *asn1_type;
X509_ATTRIBUTE *attr;
int len, i;
char *data = NULL;
scepmsg_t *msg;
if (debug)
BIO_printf(bio_err, "%s:%d: looking for attribute '%s'\n",
__FILE__, __LINE__, attrname);
/* decide which message to study: client reads attrs from reply */
if (scep->client)
msg = &scep->reply;
else
msg = &scep->request;
/* find the object we by name */
asn1_obj = OBJ_nid2obj(OBJ_sn2nid(attrname));
asn1_type = NULL;
/* retrieve the stack of signed attributes */
if (NULL == (sig_attribs = PKCS7_get_signed_attributes(msg->si))) {
BIO_printf(bio_err, "%s:%d: no signed attributes\n",
__FILE__, __LINE__);
return NULL;
}
/* scan all attributes for the one we are looking for */
for (i = 0; i < sk_X509_ATTRIBUTE_num(sig_attribs); i++) {
attr = sk_X509_ATTRIBUTE_value(sig_attribs, i);
if (OBJ_cmp(attr->object, asn1_obj) == 0) {
if (debug)
BIO_printf(bio_err, "%s:%d: found attribute\n",
__FILE__, __LINE__);
asn1_type = sk_ASN1_TYPE_value(attr->value.set, 0);
break;
}
}
/* if we cannot find the required argument, we just return NULL */
if (asn1_type == NULL) {
BIO_printf(bio_err, "%s:%d: cannot find attribute\n",
__FILE__, __LINE__);
goto err;
}
if (ASN1_TYPE_get(asn1_type) != V_ASN1_PRINTABLESTRING) {
BIO_printf(bio_err, "%s:%d: attribute has wrong type\n",
__FILE__, __LINE__);
goto err;
}
if (debug)
BIO_printf(bio_err, "%s:%d: found attribute '%s'\n",
__FILE__, __LINE__, attrname);
/* unpack the ASN1_STRING into a C-String (0-terminated) */
len = ASN1_STRING_length(asn1_type->value.asn1_string);
data = (char *)malloc(1 + len);
memcpy(data, ASN1_STRING_data(asn1_type->value.asn1_string), len);
data[len] = '\0';
if (debug)
BIO_printf(bio_err, "%s:%d: value of %d bytes retrieved\n",
__FILE__, __LINE__, len);
/* return the data */
return data;
err:
ERR_print_errors(bio_err);
return NULL;
}
ASN1_OCTET_STRING *sigattr_asn1_octet(scep_t *scep, char *attrname) {
STACK_OF(X509_ATTRIBUTE) *sig_attribs;
ASN1_OBJECT *asn1_obj;
ASN1_TYPE *asn1_type;
X509_ATTRIBUTE *attr;
int i;
scepmsg_t *msg;
int single;
if (debug)
BIO_printf(bio_err, "%s:%d: looking for attribute '%s'\n",
__FILE__, __LINE__, attrname);
/* decide which message to study: client reads attrs from reply */
if (scep->client)
msg = &scep->reply;
else
msg = &scep->request;
/* find the object we by name */
asn1_obj = OBJ_nid2obj(OBJ_sn2nid(attrname));
asn1_type = NULL;
/* retrieve the stack of signed attributes */
if (NULL == (sig_attribs = PKCS7_get_signed_attributes(msg->si))) {
BIO_printf(bio_err, "%s:%d: signed attributes not found\n",
__FILE__, __LINE__);
return NULL;
}
/* scan all attributes for the one we are looking for */
for (i = 0; i < sk_X509_ATTRIBUTE_num(sig_attribs); i++) {
attr = sk_X509_ATTRIBUTE_value(sig_attribs, i);
if (OBJ_cmp(attr->object, asn1_obj) == 0) {
#if OPENSSL_VERSION_NUMBER < 0x00907000L
/* attr->set was replaced with attr->single (with opposite
meaning) somewhere between 0.9.6m-engine and 0.9.7d */
single = !attr->set;
#else
single = attr->single;
#endif
if (single || (sk_ASN1_TYPE_num(attr->value.set) == 0)) {
BIO_printf(bio_err, "%s:%d: attr has no val\n",__FILE__, __LINE__);
goto err;
BIO_printf(bio_err, "%s:%d: attr has no val\n",
__FILE__, __LINE__);
goto err;
}
if (debug)
BIO_printf(bio_err, "%s:%d: found matching "
"attribute with %d values\n", __FILE__,
__LINE__,
sk_ASN1_TYPE_num(attr->value.set));
asn1_type = sk_ASN1_TYPE_value(attr->value.set, 0);
if (debug)
BIO_printf(bio_err, "%s:%d: type found: %p\n",
__FILE__, __LINE__, asn1_type);
break;
}
}
/* if we cannot find the required argument, we just return NULL */
if (debug)
BIO_printf(bio_err, "%s:%d: checking for attribute\n",
__FILE__, __LINE__);
if (asn1_type == NULL) {
BIO_printf(bio_err, "%s:%d: attribute has no type\n",
__FILE__, __LINE__);
goto err;
}
if (ASN1_TYPE_get(asn1_type) != V_ASN1_OCTET_STRING) {
BIO_printf(bio_err, "%s:%d: attribute has wrong type\n",
__FILE__, __LINE__);
goto err;
}
if (debug)
BIO_printf(bio_err, "%s:%d: found attribute '%s'\n",
__FILE__, __LINE__, attrname);
/* this is an ASN1_OCTET_STRING, so we can retrieve the */
/* appropriate element of the union */
return asn1_type->value.octet_string;
/* error return, or attribute not found */
err:
if (debug)
BIO_printf(bio_err, "%s:%d: attribute not found or error\n",
__FILE__, __LINE__);
ERR_print_errors(bio_err);
return NULL;
}
int int_rsa_verify(int dtype, const unsigned char *m,
unsigned int m_len,
unsigned char *rm, size_t *prm_len,
const unsigned char *sigbuf, size_t siglen, RSA *rsa)
{
int i, ret = 0, sigtype;
unsigned char *s;
X509_SIG *sig = NULL;
if (siglen != (unsigned int)RSA_size(rsa)) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_WRONG_SIGNATURE_LENGTH);
return (0);
}
if ((dtype == NID_md5_sha1) && rm) {
i = RSA_public_decrypt((int)siglen,
sigbuf, rm, rsa, RSA_PKCS1_PADDING);
if (i <= 0)
return 0;
*prm_len = i;
return 1;
}
s = OPENSSL_malloc((unsigned int)siglen);
if (s == NULL) {
RSAerr(RSA_F_INT_RSA_VERIFY, ERR_R_MALLOC_FAILURE);
goto err;
}
if ((dtype == NID_md5_sha1) && (m_len != SSL_SIG_LENGTH)) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_INVALID_MESSAGE_LENGTH);
goto err;
}
i = RSA_public_decrypt((int)siglen, sigbuf, s, rsa, RSA_PKCS1_PADDING);
if (i <= 0)
goto err;
/*
* Oddball MDC2 case: signature can be OCTET STRING. check for correct
* tag and length octets.
*/
if (dtype == NID_mdc2 && i == 18 && s[0] == 0x04 && s[1] == 0x10) {
if (rm) {
memcpy(rm, s + 2, 16);
*prm_len = 16;
ret = 1;
} else if (memcmp(m, s + 2, 16))
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
else
ret = 1;
}
/* Special case: SSL signature */
if (dtype == NID_md5_sha1) {
if ((i != SSL_SIG_LENGTH) || memcmp(s, m, SSL_SIG_LENGTH))
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
else
ret = 1;
} else {
const unsigned char *p = s;
sig = d2i_X509_SIG(NULL, &p, (long)i);
if (sig == NULL)
goto err;
/* Excess data can be used to create forgeries */
if (p != s + i || !rsa_check_digestinfo(sig, s, i)) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
goto err;
}
/*
* Parameters to the signature algorithm can also be used to create
* forgeries
*/
if (sig->algor->parameter
&& ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
goto err;
}
sigtype = OBJ_obj2nid(sig->algor->algorithm);
#ifdef RSA_DEBUG
/* put a backward compatibility flag in EAY */
fprintf(stderr, "in(%s) expect(%s)\n", OBJ_nid2ln(sigtype),
OBJ_nid2ln(dtype));
#endif
if (sigtype != dtype) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_ALGORITHM_MISMATCH);
goto err;
}
if (rm) {
const EVP_MD *md;
md = EVP_get_digestbynid(dtype);
if (md && (EVP_MD_size(md) != sig->digest->length))
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_INVALID_DIGEST_LENGTH);
else {
memcpy(rm, sig->digest->data, sig->digest->length);
*prm_len = sig->digest->length;
ret = 1;
}
} else if (((unsigned int)sig->digest->length != m_len) ||
(memcmp(m, sig->digest->data, m_len) != 0)) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
} else
ret = 1;
}
err:
X509_SIG_free(sig);
OPENSSL_clear_free(s, (unsigned int)siglen);
return (ret);
}
int RSA_verify(int dtype, const unsigned char *m, unsigned int m_len,
unsigned char *sigbuf, unsigned int siglen, RSA *rsa)
{
int i,ret=0,sigtype;
unsigned char *p,*s;
X509_SIG *sig=NULL;
if (siglen != (unsigned int)RSA_size(rsa))
{
RSAerr(RSA_F_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH);
return(0);
}
if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_verify)
{
return rsa->meth->rsa_verify(dtype, m, m_len,
sigbuf, siglen, rsa);
}
s=(unsigned char *)OPENSSL_malloc((unsigned int)siglen);
if (s == NULL)
{
RSAerr(RSA_F_RSA_VERIFY,ERR_R_MALLOC_FAILURE);
goto err;
}
if((dtype == NID_md5_sha1) && (m_len != SSL_SIG_LENGTH) ) {
RSAerr(RSA_F_RSA_VERIFY,RSA_R_INVALID_MESSAGE_LENGTH);
goto err;
}
i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING);
if (i <= 0) goto err;
/* Special case: SSL signature */
if(dtype == NID_md5_sha1) {
if((i != SSL_SIG_LENGTH) || memcmp(s, m, SSL_SIG_LENGTH))
RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
else ret = 1;
} else {
p=s;
sig=d2i_X509_SIG(NULL,&p,(long)i);
if (sig == NULL) goto err;
/* Excess data can be used to create forgeries */
if(p != s+i)
{
RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
goto err;
}
/* Parameters to the signature algorithm can also be used to
create forgeries */
if(sig->algor->parameter
&& ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL)
{
RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
goto err;
}
sigtype=OBJ_obj2nid(sig->algor->algorithm);
#ifdef RSA_DEBUG
/* put a backward compatibility flag in EAY */
fprintf(stderr,"in(%s) expect(%s)\n",OBJ_nid2ln(sigtype),
OBJ_nid2ln(dtype));
#endif
if (sigtype != dtype)
{
if (((dtype == NID_md5) &&
(sigtype == NID_md5WithRSAEncryption)) ||
((dtype == NID_md2) &&
(sigtype == NID_md2WithRSAEncryption)))
{
/* ok, we will let it through */
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
fprintf(stderr,"signature has problems, re-make with post SSLeay045\n");
#endif
}
else
{
RSAerr(RSA_F_RSA_VERIFY,
RSA_R_ALGORITHM_MISMATCH);
goto err;
}
}
if ( ((unsigned int)sig->digest->length != m_len) ||
(memcmp(m,sig->digest->data,m_len) != 0))
{
RSAerr(RSA_F_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
}
else
ret=1;
}
err:
if (sig != NULL) X509_SIG_free(sig);
if (s != NULL)
{
OPENSSL_cleanse(s,(unsigned int)siglen);
OPENSSL_free(s);
}
return(ret);
}
static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
{
EVP_PKEY_CTX *pctx;
EVP_PKEY *pkey;
EVP_CIPHER_CTX *ctx;
int keylen;
X509_ALGOR *talg, *wrap_alg = NULL;
ASN1_OBJECT *aoid;
ASN1_BIT_STRING *pubkey;
ASN1_STRING *wrap_str;
ASN1_OCTET_STRING *ukm;
unsigned char *penc = NULL;
int penclen;
int rv = 0;
int ecdh_nid, kdf_type, kdf_nid, wrap_nid;
const EVP_MD *kdf_md;
pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
if (!pctx)
return 0;
/* Get ephemeral key */
pkey = EVP_PKEY_CTX_get0_pkey(pctx);
if (!CMS_RecipientInfo_kari_get0_orig_id(ri, &talg, &pubkey,
NULL, NULL, NULL))
goto err;
X509_ALGOR_get0(&aoid, NULL, NULL, talg);
/* Is everything uninitialised? */
if (aoid == OBJ_nid2obj(NID_undef)) {
EC_KEY *eckey = pkey->pkey.ec;
/* Set the key */
unsigned char *p;
penclen = i2o_ECPublicKey(eckey, NULL);
if (penclen <= 0)
goto err;
penc = OPENSSL_malloc(penclen);
if (!penc)
goto err;
p = penc;
penclen = i2o_ECPublicKey(eckey, &p);
if (penclen <= 0)
goto err;
ASN1_STRING_set0(pubkey, penc, penclen);
pubkey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
pubkey->flags |= ASN1_STRING_FLAG_BITS_LEFT;
penc = NULL;
X509_ALGOR_set0(talg, OBJ_nid2obj(NID_X9_62_id_ecPublicKey),
V_ASN1_UNDEF, NULL);
}
/* See if custom paraneters set */
kdf_type = EVP_PKEY_CTX_get_ecdh_kdf_type(pctx);
if (kdf_type <= 0)
goto err;
if (!EVP_PKEY_CTX_get_ecdh_kdf_md(pctx, &kdf_md))
goto err;
ecdh_nid = EVP_PKEY_CTX_get_ecdh_cofactor_mode(pctx);
if (ecdh_nid < 0)
goto err;
else if (ecdh_nid == 0)
ecdh_nid = NID_dh_std_kdf;
else if (ecdh_nid == 1)
ecdh_nid = NID_dh_cofactor_kdf;
if (kdf_type == EVP_PKEY_ECDH_KDF_NONE) {
kdf_type = EVP_PKEY_ECDH_KDF_X9_62;
if (EVP_PKEY_CTX_set_ecdh_kdf_type(pctx, kdf_type) <= 0)
goto err;
} else
/* Uknown KDF */
goto err;
if (kdf_md == NULL) {
/* Fixme later for better MD */
kdf_md = EVP_sha1();
if (EVP_PKEY_CTX_set_ecdh_kdf_md(pctx, kdf_md) <= 0)
goto err;
}
if (!CMS_RecipientInfo_kari_get0_alg(ri, &talg, &ukm))
goto err;
/* Lookup NID for KDF+cofactor+digest */
if (!OBJ_find_sigid_by_algs(&kdf_nid, EVP_MD_type(kdf_md), ecdh_nid))
goto err;
/* Get wrap NID */
ctx = CMS_RecipientInfo_kari_get0_ctx(ri);
wrap_nid = EVP_CIPHER_CTX_type(ctx);
keylen = EVP_CIPHER_CTX_key_length(ctx);
/* Package wrap algorithm in an AlgorithmIdentifier */
wrap_alg = X509_ALGOR_new();
if (!wrap_alg)
goto err;
wrap_alg->algorithm = OBJ_nid2obj(wrap_nid);
wrap_alg->parameter = ASN1_TYPE_new();
if (!wrap_alg->parameter)
goto err;
if (EVP_CIPHER_param_to_asn1(ctx, wrap_alg->parameter) <= 0)
goto err;
if (ASN1_TYPE_get(wrap_alg->parameter) == NID_undef) {
ASN1_TYPE_free(wrap_alg->parameter);
wrap_alg->parameter = NULL;
}
if (EVP_PKEY_CTX_set_ecdh_kdf_outlen(pctx, keylen) <= 0)
goto err;
penclen = CMS_SharedInfo_encode(&penc, wrap_alg, ukm, keylen);
if (!penclen)
goto err;
if (EVP_PKEY_CTX_set0_ecdh_kdf_ukm(pctx, penc, penclen) <= 0)
goto err;
penc = NULL;
/*
* Now need to wrap encoding of wrap AlgorithmIdentifier into parameter
* of another AlgorithmIdentifier.
*/
penclen = i2d_X509_ALGOR(wrap_alg, &penc);
if (!penc || !penclen)
goto err;
wrap_str = ASN1_STRING_new();
if (!wrap_str)
goto err;
ASN1_STRING_set0(wrap_str, penc, penclen);
penc = NULL;
X509_ALGOR_set0(talg, OBJ_nid2obj(kdf_nid), V_ASN1_SEQUENCE, wrap_str);
rv = 1;
err:
OPENSSL_free(penc);
X509_ALGOR_free(wrap_alg);
return rv;
}
int asn1parse_main(int argc, char **argv)
{
ASN1_TYPE *at = NULL;
BIO *in = NULL, *b64 = NULL, *derout = NULL;
BUF_MEM *buf = NULL;
STACK_OF(OPENSSL_STRING) *osk = NULL;
char *genstr = NULL, *genconf = NULL;
char *infile = NULL, *oidfile = NULL, *derfile = NULL;
unsigned char *str = NULL;
char *name = NULL, *header = NULL, *prog;
const unsigned char *ctmpbuf;
int indent = 0, noout = 0, dump = 0, strictpem = 0, informat = FORMAT_PEM;
int offset = 0, ret = 1, i, j;
long num, tmplen;
unsigned char *tmpbuf;
unsigned int length = 0;
OPTION_CHOICE o;
prog = opt_init(argc, argv, asn1parse_options);
if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
goto end;
}
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(asn1parse_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUT:
derfile = opt_arg();
break;
case OPT_INDENT:
indent = 1;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_OID:
oidfile = opt_arg();
break;
case OPT_OFFSET:
offset = strtol(opt_arg(), NULL, 0);
break;
case OPT_LENGTH:
length = atoi(opt_arg());
break;
case OPT_DUMP:
dump = -1;
break;
case OPT_DLIMIT:
dump = atoi(opt_arg());
break;
case OPT_STRPARSE:
sk_OPENSSL_STRING_push(osk, opt_arg());
break;
case OPT_GENSTR:
genstr = opt_arg();
break;
case OPT_GENCONF:
genconf = opt_arg();
break;
case OPT_STRICTPEM:
strictpem = 1;
informat = FORMAT_PEM;
break;
}
}
argc = opt_num_rest();
if (argc != 0)
goto opthelp;
if (oidfile != NULL) {
in = bio_open_default(oidfile, 'r', FORMAT_TEXT);
if (in == NULL)
goto end;
OBJ_create_objects(in);
BIO_free(in);
}
if ((in = bio_open_default(infile, 'r', informat)) == NULL)
goto end;
if (derfile && (derout = bio_open_default(derfile, 'w', FORMAT_ASN1)) == NULL)
goto end;
if (strictpem) {
if (PEM_read_bio(in, &name, &header, &str, &num) !=
1) {
BIO_printf(bio_err, "Error reading PEM file\n");
ERR_print_errors(bio_err);
goto end;
}
} else {
if ((buf = BUF_MEM_new()) == NULL)
goto end;
if (!BUF_MEM_grow(buf, BUFSIZ * 8))
goto end; /* Pre-allocate :-) */
if (genstr || genconf) {
num = do_generate(genstr, genconf, buf);
if (num < 0) {
ERR_print_errors(bio_err);
goto end;
}
}
else {
if (informat == FORMAT_PEM) {
BIO *tmp;
if ((b64 = BIO_new(BIO_f_base64())) == NULL)
goto end;
BIO_push(b64, in);
tmp = in;
in = b64;
b64 = tmp;
}
num = 0;
for (;;) {
if (!BUF_MEM_grow(buf, (int)num + BUFSIZ))
goto end;
i = BIO_read(in, &(buf->data[num]), BUFSIZ);
if (i <= 0)
break;
num += i;
}
}
str = (unsigned char *)buf->data;
}
/* If any structs to parse go through in sequence */
if (sk_OPENSSL_STRING_num(osk)) {
tmpbuf = str;
tmplen = num;
for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
ASN1_TYPE *atmp;
int typ;
j = atoi(sk_OPENSSL_STRING_value(osk, i));
if (j == 0) {
BIO_printf(bio_err, "'%s' is an invalid number\n",
sk_OPENSSL_STRING_value(osk, i));
continue;
}
tmpbuf += j;
tmplen -= j;
atmp = at;
ctmpbuf = tmpbuf;
at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen);
ASN1_TYPE_free(atmp);
if (!at) {
BIO_printf(bio_err, "Error parsing structure\n");
ERR_print_errors(bio_err);
goto end;
}
typ = ASN1_TYPE_get(at);
if ((typ == V_ASN1_OBJECT)
|| (typ == V_ASN1_BOOLEAN)
|| (typ == V_ASN1_NULL)) {
BIO_printf(bio_err, "Can't parse %s type\n", ASN1_tag2str(typ));
ERR_print_errors(bio_err);
goto end;
}
/* hmm... this is a little evil but it works */
tmpbuf = at->value.asn1_string->data;
tmplen = at->value.asn1_string->length;
}
str = tmpbuf;
num = tmplen;
}
if (offset >= num) {
BIO_printf(bio_err, "Error: offset too large\n");
goto end;
}
num -= offset;
if ((length == 0) || ((long)length > num))
length = (unsigned int)num;
if (derout) {
if (BIO_write(derout, str + offset, length) != (int)length) {
BIO_printf(bio_err, "Error writing output\n");
ERR_print_errors(bio_err);
goto end;
}
}
if (!noout &&
!ASN1_parse_dump(bio_out, &(str[offset]), length,
indent, dump)) {
ERR_print_errors(bio_err);
goto end;
}
ret = 0;
end:
BIO_free(derout);
BIO_free(in);
BIO_free(b64);
if (ret != 0)
ERR_print_errors(bio_err);
BUF_MEM_free(buf);
OPENSSL_free(name);
OPENSSL_free(header);
if (strictpem)
OPENSSL_free(str);
ASN1_TYPE_free(at);
sk_OPENSSL_STRING_free(osk);
return (ret);
}
int int_rsa_verify(int dtype, const unsigned char *m,
unsigned int m_len,
unsigned char *rm, size_t *prm_len,
const unsigned char *sigbuf, size_t siglen,
RSA *rsa)
{
int i,ret=0,sigtype;
unsigned char *s;
X509_SIG *sig=NULL;
if (siglen != (unsigned int)RSA_size(rsa))
{
RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH);
return(0);
}
if((dtype == NID_md5_sha1) && rm)
{
i = RSA_public_decrypt((int)siglen,
sigbuf,rm,rsa,RSA_PKCS1_PADDING);
if (i <= 0)
return 0;
*prm_len = i;
return 1;
}
s=(unsigned char *)OPENSSL_malloc((unsigned int)siglen);
if (s == NULL)
{
RSAerr(RSA_F_INT_RSA_VERIFY,ERR_R_MALLOC_FAILURE);
goto err;
}
if((dtype == NID_md5_sha1) && (m_len != SSL_SIG_LENGTH) ) {
RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_INVALID_MESSAGE_LENGTH);
goto err;
}
i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING);
if (i <= 0) goto err;
/* Special case: SSL signature */
if(dtype == NID_md5_sha1) {
if((i != SSL_SIG_LENGTH) || TINYCLR_SSL_MEMCMP(s, m, SSL_SIG_LENGTH))
RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
else ret = 1;
} else {
const unsigned char *p=s;
sig=d2i_X509_SIG(NULL,&p,(long)i);
if (sig == NULL) goto err;
/* Excess data can be used to create forgeries */
if(p != s+i)
{
RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
goto err;
}
/* Parameters to the signature algorithm can also be used to
create forgeries */
if(sig->algor->parameter
&& ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL)
{
RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
goto err;
}
sigtype=OBJ_obj2nid(sig->algor->algorithm);
#ifdef RSA_DEBUG
/* put a backward compatibility flag in EAY */
TINYCLR_SSL_FPRINTF(OPENSSL_TYPE__FILE_STDERR,"in(%s) expect(%s)\n",OBJ_nid2ln(sigtype),
OBJ_nid2ln(dtype));
#endif
if (sigtype != dtype)
{
if (((dtype == NID_md5) &&
(sigtype == NID_md5WithRSAEncryption)) ||
((dtype == NID_md2) &&
(sigtype == NID_md2WithRSAEncryption)))
{
/* ok, we will let it through */
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
TINYCLR_SSL_FPRINTF(OPENSSL_TYPE__FILE_STDERR,"signature has problems, re-make with post SSLeay045\n");
#endif
}
else
{
RSAerr(RSA_F_INT_RSA_VERIFY,
RSA_R_ALGORITHM_MISMATCH);
goto err;
}
}
if (rm)
{
const EVP_MD *md;
md = EVP_get_digestbynid(dtype);
if (md && (EVP_MD_size(md) != sig->digest->length))
RSAerr(RSA_F_INT_RSA_VERIFY,
RSA_R_INVALID_DIGEST_LENGTH);
else
{
TINYCLR_SSL_MEMCPY(rm, sig->digest->data,
sig->digest->length);
*prm_len = sig->digest->length;
ret = 1;
}
}
else if (((unsigned int)sig->digest->length != m_len) ||
(TINYCLR_SSL_MEMCMP(m,sig->digest->data,m_len) != 0))
{
RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
}
else
ret=1;
}
err:
if (sig != NULL) X509_SIG_free(sig);
if (s != NULL)
{
OPENSSL_cleanse(s,(unsigned int)siglen);
OPENSSL_free(s);
}
return(ret);
}
int
int_rsa_verify(int dtype, const unsigned char *m, unsigned int m_len,
unsigned char *rm, size_t *prm_len, const unsigned char *sigbuf,
size_t siglen, RSA *rsa)
{
int i, ret = 0, sigtype;
unsigned char *s;
X509_SIG *sig = NULL;
if (siglen != (unsigned int)RSA_size(rsa)) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_WRONG_SIGNATURE_LENGTH);
return 0;
}
if ((dtype == NID_md5_sha1) && rm) {
i = RSA_public_decrypt((int)siglen, sigbuf, rm, rsa,
RSA_PKCS1_PADDING);
if (i <= 0)
return 0;
*prm_len = i;
return 1;
}
s = malloc(siglen);
if (s == NULL) {
RSAerr(RSA_F_INT_RSA_VERIFY, ERR_R_MALLOC_FAILURE);
goto err;
}
if (dtype == NID_md5_sha1 && m_len != SSL_SIG_LENGTH) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_INVALID_MESSAGE_LENGTH);
goto err;
}
i = RSA_public_decrypt((int)siglen, sigbuf, s, rsa, RSA_PKCS1_PADDING);
if (i <= 0)
goto err;
/* Special case: SSL signature */
if (dtype == NID_md5_sha1) {
if (i != SSL_SIG_LENGTH || memcmp(s, m, SSL_SIG_LENGTH))
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
else
ret = 1;
} else {
const unsigned char *p = s;
sig = d2i_X509_SIG(NULL, &p, (long)i);
if (sig == NULL)
goto err;
/* Excess data can be used to create forgeries */
if (p != s + i) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
goto err;
}
/* Parameters to the signature algorithm can also be used to
create forgeries */
if (sig->algor->parameter &&
ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
goto err;
}
sigtype = OBJ_obj2nid(sig->algor->algorithm);
if (sigtype != dtype) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_ALGORITHM_MISMATCH);
goto err;
}
if (rm) {
const EVP_MD *md;
md = EVP_get_digestbynid(dtype);
if (md && (EVP_MD_size(md) != sig->digest->length))
RSAerr(RSA_F_INT_RSA_VERIFY,
RSA_R_INVALID_DIGEST_LENGTH);
else {
memcpy(rm, sig->digest->data,
sig->digest->length);
*prm_len = sig->digest->length;
ret = 1;
}
} else if ((unsigned int)sig->digest->length != m_len ||
memcmp(m, sig->digest->data, m_len) != 0) {
RSAerr(RSA_F_INT_RSA_VERIFY, RSA_R_BAD_SIGNATURE);
} else
ret = 1;
}
err:
if (sig != NULL)
X509_SIG_free(sig);
if (s != NULL) {
explicit_bzero(s, (unsigned int)siglen);
free(s);
}
return ret;
}
char *get_challenge(scep_t *scep) {
int loc, type, n;
X509_ATTRIBUTE *attr;
X509_REQ *req;
ASN1_TYPE *asn1;
ASN1_IA5STRING *asn1_string;
char *challenge;
/* get our hands on the request */
req = scep->clientreq;
if (debug)
BIO_printf(bio_err, "%s:%d: getting challenge password from "
"X.509 request %p\n", __FILE__, __LINE__, req);
/* if the client req is not set, we have no chance of finding */
/* password */
if (NULL == req) {
BIO_printf(bio_err, "%s:%d: no X.509 request available\n",
__FILE__, __LINE__);
goto err;
}
/* get the challengePassword attribute from the request */
n = X509_REQ_get_attr_count(req);
if (debug)
BIO_printf(bio_err, "%s%d: %d attributes found\n", __FILE__,
__LINE__, n);
loc = X509_REQ_get_attr_by_NID(req, NID_pkcs9_challengePassword, -1);
if (loc < 0) {
if (debug)
BIO_printf(bio_err, "%s:%d: challengePassword not "
"found\n", __FILE__, __LINE__);
return NULL;
}
if (debug)
BIO_printf(bio_err, "%s:%d: challengePassword at offset %d\n",
__FILE__, __LINE__, loc);
attr = X509_REQ_get_attr(req, loc);
/* retrieve the value of the challengePassword attribute */
if (NULL == (asn1 = X509_ATTRIBUTE_get0_type(attr, 0))) {
BIO_printf(bio_err, "%s:%d: cannot retrieve value\n",
__FILE__, __LINE__);
goto err;
}
type = ASN1_TYPE_get(asn1);
if (debug)
BIO_printf(bio_err, "%s:%d: type of challengePassword is %d\n",
__FILE__, __LINE__, type);
if ((type != V_ASN1_IA5STRING) && (type != V_ASN1_PRINTABLESTRING)) {
BIO_printf(bio_err, "%s:%d: challengePassword has wrong type\n",
__FILE__, __LINE__, type);
goto err;
}
asn1_string = (ASN1_STRING *)asn1->value.ptr;
challenge = (char *)malloc(asn1_string->length + 1);
memcpy(challenge, asn1_string->data, asn1_string->length);
challenge[asn1_string->length] = '\0';
if (debug)
BIO_printf(bio_err, "%s:%d: challenge Password '%s'\n",
__FILE__, __LINE__, challenge);
/* return the challenge password we have found */
return challenge;
/* error return */
err:
ERR_print_errors(bio_err);
return NULL;
}
