|
- /* 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 <openssl/evp.h>
-
- #include <openssl/asn1.h>
- #include <openssl/asn1t.h>
- #include <openssl/digest.h>
- #include <openssl/err.h>
- #include <openssl/mem.h>
- #include <openssl/obj.h>
- #include <openssl/rsa.h>
- #include <openssl/x509.h>
-
- #include "../rsa/internal.h"
- #include "internal.h"
-
-
- static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) {
- uint8_t *encoded;
- size_t encoded_len;
- if (!RSA_public_key_to_bytes(&encoded, &encoded_len, pkey->pkey.rsa)) {
- return 0;
- }
-
- if (!X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA), V_ASN1_NULL, NULL,
- encoded, encoded_len)) {
- OPENSSL_free(encoded);
- return 0;
- }
-
- return 1;
- }
-
- static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) {
- const uint8_t *p;
- int pklen;
- RSA *rsa;
-
- if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey)) {
- return 0;
- }
- rsa = RSA_public_key_from_bytes(p, pklen);
- if (rsa == NULL) {
- OPENSSL_PUT_ERROR(EVP, 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) {
- return BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) == 0 &&
- BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) == 0;
- }
-
- static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) {
- uint8_t *encoded;
- size_t encoded_len;
- if (!RSA_private_key_to_bytes(&encoded, &encoded_len, pkey->pkey.rsa)) {
- return 0;
- }
-
- /* TODO(fork): const correctness in next line. */
- if (!PKCS8_pkey_set0(p8, (ASN1_OBJECT *)OBJ_nid2obj(NID_rsaEncryption), 0,
- V_ASN1_NULL, NULL, encoded, encoded_len)) {
- OPENSSL_free(encoded);
- OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- return 1;
- }
-
- static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) {
- const uint8_t *p;
- int pklen;
- if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8)) {
- OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- RSA *rsa = RSA_private_key_from_bytes(p, pklen);
- if (rsa == NULL) {
- OPENSSL_PUT_ERROR(EVP, ERR_R_RSA_LIB);
- return 0;
- }
-
- EVP_PKEY_assign_RSA(pkey, rsa);
- return 1;
- }
-
- static int rsa_opaque(const EVP_PKEY *pkey) {
- return RSA_is_opaque(pkey->pkey.rsa);
- }
-
- static int rsa_supports_digest(const EVP_PKEY *pkey, const EVP_MD *md) {
- return RSA_supports_digest(pkey->pkey.rsa, md);
- }
-
- 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;
- }
-
- i = BN_num_bytes(b);
- if (*pbuflen < i) {
- *pbuflen = i;
- }
- }
-
- static int do_rsa_print(BIO *out, const RSA *rsa, int off,
- int include_private) {
- char *str;
- const char *s;
- uint8_t *m = NULL;
- int ret = 0, mod_len = 0;
- size_t buf_len = 0;
-
- update_buflen(rsa->n, &buf_len);
- update_buflen(rsa->e, &buf_len);
-
- if (include_private) {
- update_buflen(rsa->d, &buf_len);
- update_buflen(rsa->p, &buf_len);
- update_buflen(rsa->q, &buf_len);
- update_buflen(rsa->dmp1, &buf_len);
- update_buflen(rsa->dmq1, &buf_len);
- update_buflen(rsa->iqmp, &buf_len);
-
- if (rsa->additional_primes != NULL) {
- size_t i;
-
- for (i = 0; i < sk_RSA_additional_prime_num(rsa->additional_primes);
- i++) {
- const RSA_additional_prime *ap =
- sk_RSA_additional_prime_value(rsa->additional_primes, i);
- update_buflen(ap->prime, &buf_len);
- update_buflen(ap->exp, &buf_len);
- update_buflen(ap->coeff, &buf_len);
- }
- }
- }
-
- m = (uint8_t *)OPENSSL_malloc(buf_len + 10);
- if (m == NULL) {
- OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (rsa->n != NULL) {
- mod_len = BN_num_bits(rsa->n);
- }
-
- if (!BIO_indent(out, off, 128)) {
- goto err;
- }
-
- if (include_private && rsa->d) {
- if (BIO_printf(out, "Private-Key: (%d bit)\n", mod_len) <= 0) {
- goto err;
- }
- str = "modulus:";
- s = "publicExponent:";
- } else {
- if (BIO_printf(out, "Public-Key: (%d bit)\n", mod_len) <= 0) {
- goto err;
- }
- str = "Modulus:";
- s = "Exponent:";
- }
- if (!ASN1_bn_print(out, str, rsa->n, m, off) ||
- !ASN1_bn_print(out, s, rsa->e, m, off)) {
- goto err;
- }
-
- if (include_private) {
- if (!ASN1_bn_print(out, "privateExponent:", rsa->d, m, off) ||
- !ASN1_bn_print(out, "prime1:", rsa->p, m, off) ||
- !ASN1_bn_print(out, "prime2:", rsa->q, m, off) ||
- !ASN1_bn_print(out, "exponent1:", rsa->dmp1, m, off) ||
- !ASN1_bn_print(out, "exponent2:", rsa->dmq1, m, off) ||
- !ASN1_bn_print(out, "coefficient:", rsa->iqmp, m, off)) {
- goto err;
- }
-
- if (rsa->additional_primes != NULL &&
- sk_RSA_additional_prime_num(rsa->additional_primes) > 0) {
- size_t i;
-
- if (BIO_printf(out, "otherPrimeInfos:\n") <= 0) {
- goto err;
- }
- for (i = 0; i < sk_RSA_additional_prime_num(rsa->additional_primes);
- i++) {
- const RSA_additional_prime *ap =
- sk_RSA_additional_prime_value(rsa->additional_primes, i);
-
- if (BIO_printf(out, "otherPrimeInfo (prime %u):\n",
- (unsigned)(i + 3)) <= 0 ||
- !ASN1_bn_print(out, "prime:", ap->prime, m, off) ||
- !ASN1_bn_print(out, "exponent:", ap->exp, m, off) ||
- !ASN1_bn_print(out, "coeff:", ap->coeff, m, off)) {
- goto err;
- }
- }
- }
- }
- ret = 1;
-
- err:
- 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);
- }
-
- /* Given an MGF1 Algorithm ID decode to an Algorithm Identifier */
- static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg) {
- const uint8_t *p;
- int plen;
-
- if (alg == NULL ||
- OBJ_obj2nid(alg->algorithm) != NID_mgf1 ||
- alg->parameter->type != V_ASN1_SEQUENCE) {
- return NULL;
- }
-
- p = alg->parameter->value.sequence->data;
- plen = alg->parameter->value.sequence->length;
- return d2i_X509_ALGOR(NULL, &p, plen);
- }
-
- static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg,
- X509_ALGOR **pmaskHash) {
- const uint8_t *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;
- }
-
- *pmaskHash = rsa_mgf1_decode(pss->maskGenAlgorithm);
-
- 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 ||
- !BIO_indent(bp, indent, 128) ||
- 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 ||
- !BIO_indent(bp, indent, 128) ||
- BIO_puts(bp, "Mask Algorithm: ") <= 0) {
- goto err;
- }
-
- if (pss->maskGenAlgorithm) {
- if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0 ||
- 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) ||
- 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) ||
- 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);
- RSA_PSS_PARAMS_free(pss);
- 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 old_rsa_priv_decode(EVP_PKEY *pkey, const uint8_t **pder,
- int derlen) {
- RSA *rsa = d2i_RSAPrivateKey(NULL, pder, derlen);
- if (rsa == NULL) {
- OPENSSL_PUT_ERROR(EVP, ERR_R_RSA_LIB);
- return 0;
- }
- EVP_PKEY_assign_RSA(pkey, rsa);
- return 1;
- }
-
- static int old_rsa_priv_encode(const EVP_PKEY *pkey, uint8_t **pder) {
- return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
- }
-
- /* allocate and set algorithm ID from EVP_MD, default SHA1 */
- static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md) {
- if (EVP_MD_type(md) == NID_sha1) {
- return 1;
- }
- *palg = X509_ALGOR_new();
- if (!*palg) {
- return 0;
- }
- X509_ALGOR_set_md(*palg, md);
- return 1;
- }
-
- /* Allocate and set MGF1 algorithm ID from EVP_MD */
- static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md) {
- X509_ALGOR *algtmp = NULL;
- ASN1_STRING *stmp = NULL;
- *palg = NULL;
-
- if (EVP_MD_type(mgf1md) == NID_sha1) {
- return 1;
- }
- /* need to embed algorithm ID inside another */
- if (!rsa_md_to_algor(&algtmp, mgf1md) ||
- !ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp)) {
- goto err;
- }
- *palg = X509_ALGOR_new();
- if (!*palg) {
- goto err;
- }
- X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp);
- stmp = NULL;
-
- err:
- ASN1_STRING_free(stmp);
- X509_ALGOR_free(algtmp);
- if (*palg) {
- return 1;
- }
-
- return 0;
- }
-
- /* convert algorithm ID to EVP_MD, default SHA1 */
- static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg) {
- const EVP_MD *md;
- if (!alg) {
- return EVP_sha1();
- }
- md = EVP_get_digestbyobj(alg->algorithm);
- if (md == NULL) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_DIGEST);
- }
- return md;
- }
-
- /* convert MGF1 algorithm ID to EVP_MD, default SHA1 */
- static const EVP_MD *rsa_mgf1_to_md(X509_ALGOR *alg, X509_ALGOR *maskHash) {
- const EVP_MD *md;
- if (!alg) {
- return EVP_sha1();
- }
- /* Check mask and lookup mask hash algorithm */
- if (OBJ_obj2nid(alg->algorithm) != NID_mgf1) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_MASK_ALGORITHM);
- return NULL;
- }
- if (!maskHash) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_MASK_PARAMETER);
- return NULL;
- }
- md = EVP_get_digestbyobj(maskHash->algorithm);
- if (md == NULL) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_MASK_DIGEST);
- return NULL;
- }
- return md;
- }
-
- /* rsa_ctx_to_pss converts EVP_PKEY_CTX in PSS mode into corresponding
- * algorithm parameter, suitable for setting as an AlgorithmIdentifier. */
- static ASN1_STRING *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx) {
- const EVP_MD *sigmd, *mgf1md;
- RSA_PSS_PARAMS *pss = NULL;
- ASN1_STRING *os = NULL;
- EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
- int saltlen, rv = 0;
-
- if (!EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) ||
- !EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) ||
- !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--;
- }
- } else {
- goto err;
- }
-
- pss = RSA_PSS_PARAMS_new();
- if (!pss) {
- goto err;
- }
-
- if (saltlen != 20) {
- pss->saltLength = ASN1_INTEGER_new();
- if (!pss->saltLength ||
- !ASN1_INTEGER_set(pss->saltLength, saltlen)) {
- goto err;
- }
- }
-
- if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd) ||
- !rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md)) {
- goto err;
- }
-
- /* Finally create string with pss parameter encoding. */
- if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os)) {
- goto err;
- }
- rv = 1;
-
- err:
- if (pss) {
- RSA_PSS_PARAMS_free(pss);
- }
- if (rv) {
- return os;
- }
- if (os) {
- ASN1_STRING_free(os);
- }
- return NULL;
- }
-
- /* From PSS AlgorithmIdentifier set public key parameters. */
- static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, X509_ALGOR *sigalg, EVP_PKEY *pkey) {
- int ret = 0;
- 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) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_SIGNATURE_TYPE);
- return 0;
- }
- /* Decode PSS parameters */
- pss = rsa_pss_decode(sigalg, &maskHash);
- if (pss == NULL) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_PSS_PARAMETERS);
- goto err;
- }
-
- mgf1md = rsa_mgf1_to_md(pss->maskGenAlgorithm, maskHash);
- if (!mgf1md) {
- goto err;
- }
- md = rsa_algor_to_md(pss->hashAlgorithm);
- if (!md) {
- goto err;
- }
-
- saltlen = 20;
- 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) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_SALT_LENGTH);
- goto err;
- }
- }
-
- /* 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) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_TRAILER);
- goto err;
- }
-
- if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey) ||
- !EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) ||
- !EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) ||
- !EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md)) {
- goto err;
- }
-
- ret = 1;
-
- err:
- RSA_PSS_PARAMS_free(pss);
- if (maskHash) {
- X509_ALGOR_free(maskHash);
- }
- return ret;
- }
-
- /* Customised RSA AlgorithmIdentifier handling. This is called when a signature
- * is encountered requiring special handling. We currently only handle PSS. */
- static int rsa_digest_verify_init_from_algorithm(EVP_MD_CTX *ctx,
- X509_ALGOR *sigalg,
- EVP_PKEY *pkey) {
- /* Sanity check: make sure it is PSS */
- if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_SIGNATURE_TYPE);
- return 0;
- }
- return rsa_pss_to_ctx(ctx, sigalg, pkey);
- }
-
- static evp_digest_sign_algorithm_result_t rsa_digest_sign_algorithm(
- EVP_MD_CTX *ctx, X509_ALGOR *sigalg) {
- int pad_mode;
- EVP_PKEY_CTX *pkctx = ctx->pctx;
- if (!EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode)) {
- return EVP_DIGEST_SIGN_ALGORITHM_ERROR;
- }
- if (pad_mode == RSA_PKCS1_PSS_PADDING) {
- ASN1_STRING *os1 = rsa_ctx_to_pss(pkctx);
- if (!os1) {
- return EVP_DIGEST_SIGN_ALGORITHM_ERROR;
- }
- X509_ALGOR_set0(sigalg, OBJ_nid2obj(NID_rsassaPss), V_ASN1_SEQUENCE, os1);
- return EVP_DIGEST_SIGN_ALGORITHM_SUCCESS;
- }
-
- /* Other padding schemes use the default behavior. */
- return EVP_DIGEST_SIGN_ALGORITHM_DEFAULT;
- }
-
- const EVP_PKEY_ASN1_METHOD rsa_asn1_meth = {
- EVP_PKEY_RSA,
- EVP_PKEY_RSA,
- ASN1_PKEY_SIGPARAM_NULL,
-
- "RSA",
-
- rsa_pub_decode,
- rsa_pub_encode,
- rsa_pub_cmp,
- rsa_pub_print,
-
- rsa_priv_decode,
- rsa_priv_encode,
- rsa_priv_print,
-
- rsa_opaque,
- rsa_supports_digest,
-
- int_rsa_size,
- rsa_bits,
-
- 0,0,0,0,0,0,
-
- rsa_sig_print,
- int_rsa_free,
-
- old_rsa_priv_decode,
- old_rsa_priv_encode,
-
- rsa_digest_verify_init_from_algorithm,
- rsa_digest_sign_algorithm,
- };
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