You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
649 lines
18 KiB
649 lines
18 KiB
/* crypto/rsa/rsa_ameth.c */ |
|
/* |
|
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project |
|
* 2006. |
|
*/ |
|
/* ==================================================================== |
|
* Copyright (c) 2006 The OpenSSL Project. All rights reserved. |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* |
|
* 1. Redistributions of source code must retain the above copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* |
|
* 2. Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in |
|
* the documentation and/or other materials provided with the |
|
* distribution. |
|
* |
|
* 3. All advertising materials mentioning features or use of this |
|
* software must display the following acknowledgment: |
|
* "This product includes software developed by the OpenSSL Project |
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
|
* |
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
|
* endorse or promote products derived from this software without |
|
* prior written permission. For written permission, please contact |
|
* licensing@OpenSSL.org. |
|
* |
|
* 5. Products derived from this software may not be called "OpenSSL" |
|
* nor may "OpenSSL" appear in their names without prior written |
|
* permission of the OpenSSL Project. |
|
* |
|
* 6. Redistributions of any form whatsoever must retain the following |
|
* acknowledgment: |
|
* "This product includes software developed by the OpenSSL Project |
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
* OF THE POSSIBILITY OF SUCH DAMAGE. |
|
* ==================================================================== |
|
* |
|
* This product includes cryptographic software written by Eric Young |
|
* (eay@cryptsoft.com). This product includes software written by Tim |
|
* Hudson (tjh@cryptsoft.com). |
|
* |
|
*/ |
|
|
|
#include <stdio.h> |
|
#include "cryptlib.h" |
|
#include <openssl/asn1t.h> |
|
#include <openssl/x509.h> |
|
#include <openssl/rsa.h> |
|
#include <openssl/bn.h> |
|
#ifndef OPENSSL_NO_CMS |
|
# include <openssl/cms.h> |
|
#endif |
|
#include "asn1_locl.h" |
|
|
|
static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
|
{ |
|
unsigned char *penc = NULL; |
|
int penclen; |
|
penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc); |
|
if (penclen <= 0) |
|
return 0; |
|
if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA), |
|
V_ASN1_NULL, NULL, penc, penclen)) |
|
return 1; |
|
|
|
OPENSSL_free(penc); |
|
return 0; |
|
} |
|
|
|
static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) |
|
{ |
|
const unsigned char *p; |
|
int pklen; |
|
RSA *rsa = NULL; |
|
if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey)) |
|
return 0; |
|
if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen))) { |
|
RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB); |
|
return 0; |
|
} |
|
EVP_PKEY_assign_RSA(pkey, rsa); |
|
return 1; |
|
} |
|
|
|
static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
|
{ |
|
if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0 |
|
|| BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0) |
|
return 0; |
|
return 1; |
|
} |
|
|
|
static int old_rsa_priv_decode(EVP_PKEY *pkey, |
|
const unsigned char **pder, int derlen) |
|
{ |
|
RSA *rsa; |
|
if (!(rsa = d2i_RSAPrivateKey(NULL, pder, derlen))) { |
|
RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB); |
|
return 0; |
|
} |
|
EVP_PKEY_assign_RSA(pkey, rsa); |
|
return 1; |
|
} |
|
|
|
static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) |
|
{ |
|
return i2d_RSAPrivateKey(pkey->pkey.rsa, pder); |
|
} |
|
|
|
static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
|
{ |
|
unsigned char *rk = NULL; |
|
int rklen; |
|
rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk); |
|
|
|
if (rklen <= 0) { |
|
RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); |
|
return 0; |
|
} |
|
|
|
if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0, |
|
V_ASN1_NULL, NULL, rk, rklen)) { |
|
RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); |
|
return 0; |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) |
|
{ |
|
const unsigned char *p; |
|
int pklen; |
|
if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8)) |
|
return 0; |
|
return old_rsa_priv_decode(pkey, &p, pklen); |
|
} |
|
|
|
static int int_rsa_size(const EVP_PKEY *pkey) |
|
{ |
|
return RSA_size(pkey->pkey.rsa); |
|
} |
|
|
|
static int rsa_bits(const EVP_PKEY *pkey) |
|
{ |
|
return BN_num_bits(pkey->pkey.rsa->n); |
|
} |
|
|
|
static void int_rsa_free(EVP_PKEY *pkey) |
|
{ |
|
RSA_free(pkey->pkey.rsa); |
|
} |
|
|
|
static void update_buflen(const BIGNUM *b, size_t *pbuflen) |
|
{ |
|
size_t i; |
|
if (!b) |
|
return; |
|
if (*pbuflen < (i = (size_t)BN_num_bytes(b))) |
|
*pbuflen = i; |
|
} |
|
|
|
static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv) |
|
{ |
|
char *str; |
|
const char *s; |
|
unsigned char *m = NULL; |
|
int ret = 0, mod_len = 0; |
|
size_t buf_len = 0; |
|
|
|
update_buflen(x->n, &buf_len); |
|
update_buflen(x->e, &buf_len); |
|
|
|
if (priv) { |
|
update_buflen(x->d, &buf_len); |
|
update_buflen(x->p, &buf_len); |
|
update_buflen(x->q, &buf_len); |
|
update_buflen(x->dmp1, &buf_len); |
|
update_buflen(x->dmq1, &buf_len); |
|
update_buflen(x->iqmp, &buf_len); |
|
} |
|
|
|
m = (unsigned char *)OPENSSL_malloc(buf_len + 10); |
|
if (m == NULL) { |
|
RSAerr(RSA_F_DO_RSA_PRINT, ERR_R_MALLOC_FAILURE); |
|
goto err; |
|
} |
|
|
|
if (x->n != NULL) |
|
mod_len = BN_num_bits(x->n); |
|
|
|
if (!BIO_indent(bp, off, 128)) |
|
goto err; |
|
|
|
if (priv && x->d) { |
|
if (BIO_printf(bp, "Private-Key: (%d bit)\n", mod_len) |
|
<= 0) |
|
goto err; |
|
str = "modulus:"; |
|
s = "publicExponent:"; |
|
} else { |
|
if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) |
|
<= 0) |
|
goto err; |
|
str = "Modulus:"; |
|
s = "Exponent:"; |
|
} |
|
if (!ASN1_bn_print(bp, str, x->n, m, off)) |
|
goto err; |
|
if (!ASN1_bn_print(bp, s, x->e, m, off)) |
|
goto err; |
|
if (priv) { |
|
if (!ASN1_bn_print(bp, "privateExponent:", x->d, m, off)) |
|
goto err; |
|
if (!ASN1_bn_print(bp, "prime1:", x->p, m, off)) |
|
goto err; |
|
if (!ASN1_bn_print(bp, "prime2:", x->q, m, off)) |
|
goto err; |
|
if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, m, off)) |
|
goto err; |
|
if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, m, off)) |
|
goto err; |
|
if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, m, off)) |
|
goto err; |
|
} |
|
ret = 1; |
|
err: |
|
if (m != NULL) |
|
OPENSSL_free(m); |
|
return (ret); |
|
} |
|
|
|
static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
|
ASN1_PCTX *ctx) |
|
{ |
|
return do_rsa_print(bp, pkey->pkey.rsa, indent, 0); |
|
} |
|
|
|
static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
|
ASN1_PCTX *ctx) |
|
{ |
|
return do_rsa_print(bp, pkey->pkey.rsa, indent, 1); |
|
} |
|
|
|
static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg, |
|
X509_ALGOR **pmaskHash) |
|
{ |
|
const unsigned char *p; |
|
int plen; |
|
RSA_PSS_PARAMS *pss; |
|
|
|
*pmaskHash = NULL; |
|
|
|
if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE) |
|
return NULL; |
|
p = alg->parameter->value.sequence->data; |
|
plen = alg->parameter->value.sequence->length; |
|
pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen); |
|
|
|
if (!pss) |
|
return NULL; |
|
|
|
if (pss->maskGenAlgorithm) { |
|
ASN1_TYPE *param = pss->maskGenAlgorithm->parameter; |
|
if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1 |
|
&& param && param->type == V_ASN1_SEQUENCE) { |
|
p = param->value.sequence->data; |
|
plen = param->value.sequence->length; |
|
*pmaskHash = d2i_X509_ALGOR(NULL, &p, plen); |
|
} |
|
} |
|
|
|
return pss; |
|
} |
|
|
|
static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss, |
|
X509_ALGOR *maskHash, int indent) |
|
{ |
|
int rv = 0; |
|
if (!pss) { |
|
if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0) |
|
return 0; |
|
return 1; |
|
} |
|
if (BIO_puts(bp, "\n") <= 0) |
|
goto err; |
|
if (!BIO_indent(bp, indent, 128)) |
|
goto err; |
|
if (BIO_puts(bp, "Hash Algorithm: ") <= 0) |
|
goto err; |
|
|
|
if (pss->hashAlgorithm) { |
|
if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) |
|
goto err; |
|
} else if (BIO_puts(bp, "sha1 (default)") <= 0) |
|
goto err; |
|
|
|
if (BIO_puts(bp, "\n") <= 0) |
|
goto err; |
|
|
|
if (!BIO_indent(bp, indent, 128)) |
|
goto err; |
|
|
|
if (BIO_puts(bp, "Mask Algorithm: ") <= 0) |
|
goto err; |
|
if (pss->maskGenAlgorithm) { |
|
if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0) |
|
goto err; |
|
if (BIO_puts(bp, " with ") <= 0) |
|
goto err; |
|
if (maskHash) { |
|
if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) |
|
goto err; |
|
} else if (BIO_puts(bp, "INVALID") <= 0) |
|
goto err; |
|
} else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) |
|
goto err; |
|
BIO_puts(bp, "\n"); |
|
|
|
if (!BIO_indent(bp, indent, 128)) |
|
goto err; |
|
if (BIO_puts(bp, "Salt Length: 0x") <= 0) |
|
goto err; |
|
if (pss->saltLength) { |
|
if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) |
|
goto err; |
|
} else if (BIO_puts(bp, "14 (default)") <= 0) |
|
goto err; |
|
BIO_puts(bp, "\n"); |
|
|
|
if (!BIO_indent(bp, indent, 128)) |
|
goto err; |
|
if (BIO_puts(bp, "Trailer Field: 0x") <= 0) |
|
goto err; |
|
if (pss->trailerField) { |
|
if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) |
|
goto err; |
|
} else if (BIO_puts(bp, "BC (default)") <= 0) |
|
goto err; |
|
BIO_puts(bp, "\n"); |
|
|
|
rv = 1; |
|
|
|
err: |
|
return rv; |
|
|
|
} |
|
|
|
static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, |
|
const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx) |
|
{ |
|
if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss) { |
|
int rv; |
|
RSA_PSS_PARAMS *pss; |
|
X509_ALGOR *maskHash; |
|
pss = rsa_pss_decode(sigalg, &maskHash); |
|
rv = rsa_pss_param_print(bp, pss, maskHash, indent); |
|
if (pss) |
|
RSA_PSS_PARAMS_free(pss); |
|
if (maskHash) |
|
X509_ALGOR_free(maskHash); |
|
if (!rv) |
|
return 0; |
|
} else if (!sig && BIO_puts(bp, "\n") <= 0) |
|
return 0; |
|
if (sig) |
|
return X509_signature_dump(bp, sig, indent); |
|
return 1; |
|
} |
|
|
|
static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
|
{ |
|
X509_ALGOR *alg = NULL; |
|
switch (op) { |
|
|
|
case ASN1_PKEY_CTRL_PKCS7_SIGN: |
|
if (arg1 == 0) |
|
PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); |
|
break; |
|
|
|
case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: |
|
if (arg1 == 0) |
|
PKCS7_RECIP_INFO_get0_alg(arg2, &alg); |
|
break; |
|
#ifndef OPENSSL_NO_CMS |
|
case ASN1_PKEY_CTRL_CMS_SIGN: |
|
if (arg1 == 0) |
|
CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg); |
|
break; |
|
|
|
case ASN1_PKEY_CTRL_CMS_ENVELOPE: |
|
if (arg1 == 0) |
|
CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg); |
|
break; |
|
#endif |
|
|
|
case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
|
*(int *)arg2 = NID_sha1; |
|
return 1; |
|
|
|
default: |
|
return -2; |
|
|
|
} |
|
|
|
if (alg) |
|
X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
|
|
|
return 1; |
|
|
|
} |
|
|
|
/* |
|
* Customised RSA item verification routine. This is called when a signature |
|
* is encountered requiring special handling. We currently only handle PSS. |
|
*/ |
|
|
|
static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, |
|
X509_ALGOR *sigalg, ASN1_BIT_STRING *sig, |
|
EVP_PKEY *pkey) |
|
{ |
|
int rv = -1; |
|
int saltlen; |
|
const EVP_MD *mgf1md = NULL, *md = NULL; |
|
RSA_PSS_PARAMS *pss; |
|
X509_ALGOR *maskHash; |
|
EVP_PKEY_CTX *pkctx; |
|
/* Sanity check: make sure it is PSS */ |
|
if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); |
|
return -1; |
|
} |
|
/* Decode PSS parameters */ |
|
pss = rsa_pss_decode(sigalg, &maskHash); |
|
|
|
if (pss == NULL) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_PSS_PARAMETERS); |
|
goto err; |
|
} |
|
/* Check mask and lookup mask hash algorithm */ |
|
if (pss->maskGenAlgorithm) { |
|
if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) != NID_mgf1) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_ALGORITHM); |
|
goto err; |
|
} |
|
if (!maskHash) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_PARAMETER); |
|
goto err; |
|
} |
|
mgf1md = EVP_get_digestbyobj(maskHash->algorithm); |
|
if (mgf1md == NULL) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_MASK_DIGEST); |
|
goto err; |
|
} |
|
} else |
|
mgf1md = EVP_sha1(); |
|
|
|
if (pss->hashAlgorithm) { |
|
md = EVP_get_digestbyobj(pss->hashAlgorithm->algorithm); |
|
if (md == NULL) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_PSS_DIGEST); |
|
goto err; |
|
} |
|
} else |
|
md = EVP_sha1(); |
|
|
|
if (pss->saltLength) { |
|
saltlen = ASN1_INTEGER_get(pss->saltLength); |
|
|
|
/* |
|
* Could perform more salt length sanity checks but the main RSA |
|
* routines will trap other invalid values anyway. |
|
*/ |
|
if (saltlen < 0) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_SALT_LENGTH); |
|
goto err; |
|
} |
|
} else |
|
saltlen = 20; |
|
|
|
/* |
|
* low-level routines support only trailer field 0xbc (value 1) and |
|
* PKCS#1 says we should reject any other value anyway. |
|
*/ |
|
if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) { |
|
RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_TRAILER); |
|
goto err; |
|
} |
|
|
|
/* We have all parameters now set up context */ |
|
|
|
if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey)) |
|
goto err; |
|
|
|
if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0) |
|
goto err; |
|
|
|
if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0) |
|
goto err; |
|
|
|
if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) |
|
goto err; |
|
/* Carry on */ |
|
rv = 2; |
|
|
|
err: |
|
RSA_PSS_PARAMS_free(pss); |
|
if (maskHash) |
|
X509_ALGOR_free(maskHash); |
|
return rv; |
|
} |
|
|
|
static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, |
|
X509_ALGOR *alg1, X509_ALGOR *alg2, |
|
ASN1_BIT_STRING *sig) |
|
{ |
|
int pad_mode; |
|
EVP_PKEY_CTX *pkctx = ctx->pctx; |
|
if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) |
|
return 0; |
|
if (pad_mode == RSA_PKCS1_PADDING) |
|
return 2; |
|
if (pad_mode == RSA_PKCS1_PSS_PADDING) { |
|
const EVP_MD *sigmd, *mgf1md; |
|
RSA_PSS_PARAMS *pss = NULL; |
|
X509_ALGOR *mgf1alg = NULL; |
|
ASN1_STRING *os1 = NULL, *os2 = NULL; |
|
EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx); |
|
int saltlen, rv = 0; |
|
sigmd = EVP_MD_CTX_md(ctx); |
|
if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) |
|
goto err; |
|
if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen)) |
|
goto err; |
|
if (saltlen == -1) |
|
saltlen = EVP_MD_size(sigmd); |
|
else if (saltlen == -2) { |
|
saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2; |
|
if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0) |
|
saltlen--; |
|
} |
|
pss = RSA_PSS_PARAMS_new(); |
|
if (!pss) |
|
goto err; |
|
if (saltlen != 20) { |
|
pss->saltLength = ASN1_INTEGER_new(); |
|
if (!pss->saltLength) |
|
goto err; |
|
if (!ASN1_INTEGER_set(pss->saltLength, saltlen)) |
|
goto err; |
|
} |
|
if (EVP_MD_type(sigmd) != NID_sha1) { |
|
pss->hashAlgorithm = X509_ALGOR_new(); |
|
if (!pss->hashAlgorithm) |
|
goto err; |
|
X509_ALGOR_set_md(pss->hashAlgorithm, sigmd); |
|
} |
|
if (EVP_MD_type(mgf1md) != NID_sha1) { |
|
ASN1_STRING *stmp = NULL; |
|
/* need to embed algorithm ID inside another */ |
|
mgf1alg = X509_ALGOR_new(); |
|
X509_ALGOR_set_md(mgf1alg, mgf1md); |
|
if (!ASN1_item_pack(mgf1alg, ASN1_ITEM_rptr(X509_ALGOR), &stmp)) |
|
goto err; |
|
pss->maskGenAlgorithm = X509_ALGOR_new(); |
|
if (!pss->maskGenAlgorithm) |
|
goto err; |
|
X509_ALGOR_set0(pss->maskGenAlgorithm, |
|
OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp); |
|
} |
|
/* Finally create string with pss parameter encoding. */ |
|
if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os1)) |
|
goto err; |
|
if (alg2) { |
|
os2 = ASN1_STRING_dup(os1); |
|
if (!os2) |
|
goto err; |
|
X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss), |
|
V_ASN1_SEQUENCE, os2); |
|
} |
|
X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss), |
|
V_ASN1_SEQUENCE, os1); |
|
os1 = os2 = NULL; |
|
rv = 3; |
|
err: |
|
if (mgf1alg) |
|
X509_ALGOR_free(mgf1alg); |
|
if (pss) |
|
RSA_PSS_PARAMS_free(pss); |
|
if (os1) |
|
ASN1_STRING_free(os1); |
|
return rv; |
|
|
|
} |
|
return 2; |
|
} |
|
|
|
const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = { |
|
{ |
|
EVP_PKEY_RSA, |
|
EVP_PKEY_RSA, |
|
ASN1_PKEY_SIGPARAM_NULL, |
|
|
|
"RSA", |
|
"OpenSSL RSA method", |
|
|
|
rsa_pub_decode, |
|
rsa_pub_encode, |
|
rsa_pub_cmp, |
|
rsa_pub_print, |
|
|
|
rsa_priv_decode, |
|
rsa_priv_encode, |
|
rsa_priv_print, |
|
|
|
int_rsa_size, |
|
rsa_bits, |
|
|
|
0, 0, 0, 0, 0, 0, |
|
|
|
rsa_sig_print, |
|
int_rsa_free, |
|
rsa_pkey_ctrl, |
|
old_rsa_priv_decode, |
|
old_rsa_priv_encode, |
|
rsa_item_verify, |
|
rsa_item_sign}, |
|
|
|
{ |
|
EVP_PKEY_RSA2, |
|
EVP_PKEY_RSA, |
|
ASN1_PKEY_ALIAS} |
|
};
|
|
|