diff options
Diffstat (limited to 'thirdparty/openssl/crypto/rsa/rsa_ameth.c')
| -rw-r--r-- | thirdparty/openssl/crypto/rsa/rsa_ameth.c | 967 |
1 files changed, 0 insertions, 967 deletions
diff --git a/thirdparty/openssl/crypto/rsa/rsa_ameth.c b/thirdparty/openssl/crypto/rsa/rsa_ameth.c deleted file mode 100644 index ddead3d744..0000000000 --- a/thirdparty/openssl/crypto/rsa/rsa_ameth.c +++ /dev/null @@ -1,967 +0,0 @@ -/* 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" - -#ifndef OPENSSL_NO_CMS -static int rsa_cms_sign(CMS_SignerInfo *si); -static int rsa_cms_verify(CMS_SignerInfo *si); -static int rsa_cms_decrypt(CMS_RecipientInfo *ri); -static int rsa_cms_encrypt(CMS_RecipientInfo *ri); -#endif - -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); -} - -/* Given an MGF1 Algorithm ID decode to an Algorithm Identifier */ -static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg) -{ - const unsigned char *p; - int plen; - if (alg == NULL || alg->parameter == NULL) - return NULL; - if (OBJ_obj2nid(alg->algorithm) != NID_mgf1) - return NULL; - if (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 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; - - *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) - 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) - return rsa_cms_sign(arg2); - else if (arg1 == 1) - return rsa_cms_verify(arg2); - break; - - case ASN1_PKEY_CTRL_CMS_ENVELOPE: - if (arg1 == 0) - return rsa_cms_encrypt(arg2); - else if (arg1 == 1) - return rsa_cms_decrypt(arg2); - break; - - case ASN1_PKEY_CTRL_CMS_RI_TYPE: - *(int *)arg2 = CMS_RECIPINFO_TRANS; - return 1; -#endif - - case ASN1_PKEY_CTRL_DEFAULT_MD_NID: - *(int *)arg2 = NID_sha256; - return 1; - - default: - return -2; - - } - - if (alg) - X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); - - return 1; - -} - -/* 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)) - goto err; - if (!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: - if (stmp) - ASN1_STRING_free(stmp); - if (algtmp) - 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) - RSAerr(RSA_F_RSA_ALGOR_TO_MD, RSA_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) { - RSAerr(RSA_F_RSA_MGF1_TO_MD, RSA_R_UNSUPPORTED_MASK_ALGORITHM); - return NULL; - } - if (!maskHash) { - RSAerr(RSA_F_RSA_MGF1_TO_MD, RSA_R_UNSUPPORTED_MASK_PARAMETER); - return NULL; - } - md = EVP_get_digestbyobj(maskHash->algorithm); - if (md == NULL) { - RSAerr(RSA_F_RSA_MGF1_TO_MD, RSA_R_UNKNOWN_MASK_DIGEST); - return NULL; - } - return md; -} - -/* - * Convert EVP_PKEY_CTX is PSS mode into corresponding algorithm parameter, - * suitable for setting 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) <= 0) - goto err; - 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 (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd)) - goto err; - if (!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. If pkey isn't NULL - * then the EVP_MD_CTX is setup and initalised. If it is NULL parameters are - * passed to pkctx instead. - */ - -static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx, - X509_ALGOR *sigalg, EVP_PKEY *pkey) -{ - int rv = -1; - int saltlen; - const EVP_MD *mgf1md = NULL, *md = NULL; - RSA_PSS_PARAMS *pss; - X509_ALGOR *maskHash; - /* Sanity check: make sure it is PSS */ - if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss) { - RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); - return -1; - } - /* Decode PSS parameters */ - pss = rsa_pss_decode(sigalg, &maskHash); - - if (pss == NULL) { - RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_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; - - 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_PSS_TO_CTX, 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_PSS_TO_CTX, RSA_R_INVALID_TRAILER); - goto err; - } - - /* We have all parameters now set up context */ - - if (pkey) { - if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey)) - goto err; - } else { - const EVP_MD *checkmd; - if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0) - goto err; - if (EVP_MD_type(md) != EVP_MD_type(checkmd)) { - RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_DIGEST_DOES_NOT_MATCH); - 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 = 1; - - err: - RSA_PSS_PARAMS_free(pss); - if (maskHash) - X509_ALGOR_free(maskHash); - return rv; -} - -#ifndef OPENSSL_NO_CMS -static int rsa_cms_verify(CMS_SignerInfo *si) -{ - int nid, nid2; - X509_ALGOR *alg; - EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si); - CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg); - nid = OBJ_obj2nid(alg->algorithm); - if (nid == NID_rsaEncryption) - return 1; - if (nid == NID_rsassaPss) - return rsa_pss_to_ctx(NULL, pkctx, alg, NULL); - /* Workaround for some implementation that use a signature OID */ - if (OBJ_find_sigid_algs(nid, NULL, &nid2)) { - if (nid2 == NID_rsaEncryption) - return 1; - } - return 0; -} -#endif - -/* - * 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) -{ - /* 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; - } - if (rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) { - /* Carry on */ - return 2; - } - return -1; -} - -#ifndef OPENSSL_NO_CMS -static int rsa_cms_sign(CMS_SignerInfo *si) -{ - int pad_mode = RSA_PKCS1_PADDING; - X509_ALGOR *alg; - EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si); - ASN1_STRING *os = NULL; - CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg); - if (pkctx) { - if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) - return 0; - } - if (pad_mode == RSA_PKCS1_PADDING) { - X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); - return 1; - } - /* We don't support it */ - if (pad_mode != RSA_PKCS1_PSS_PADDING) - return 0; - os = rsa_ctx_to_pss(pkctx); - if (!os) - return 0; - X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsassaPss), V_ASN1_SEQUENCE, os); - return 1; -} -#endif - -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) { - ASN1_STRING *os1 = NULL; - os1 = rsa_ctx_to_pss(pkctx); - if (!os1) - return 0; - /* Duplicate parameters if we have to */ - if (alg2) { - ASN1_STRING *os2 = ASN1_STRING_dup(os1); - if (!os2) { - ASN1_STRING_free(os1); - return 0; - } - X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss), - V_ASN1_SEQUENCE, os2); - } - X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss), - V_ASN1_SEQUENCE, os1); - return 3; - } - return 2; -} - -#ifndef OPENSSL_NO_CMS -static RSA_OAEP_PARAMS *rsa_oaep_decode(const X509_ALGOR *alg, - X509_ALGOR **pmaskHash) -{ - const unsigned char *p; - int plen; - RSA_OAEP_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_OAEP_PARAMS(NULL, &p, plen); - - if (!pss) - return NULL; - - *pmaskHash = rsa_mgf1_decode(pss->maskGenFunc); - - return pss; -} - -static int rsa_cms_decrypt(CMS_RecipientInfo *ri) -{ - EVP_PKEY_CTX *pkctx; - X509_ALGOR *cmsalg; - int nid; - int rv = -1; - unsigned char *label = NULL; - int labellen = 0; - const EVP_MD *mgf1md = NULL, *md = NULL; - RSA_OAEP_PARAMS *oaep; - X509_ALGOR *maskHash; - pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri); - if (!pkctx) - return 0; - if (!CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &cmsalg)) - return -1; - nid = OBJ_obj2nid(cmsalg->algorithm); - if (nid == NID_rsaEncryption) - return 1; - if (nid != NID_rsaesOaep) { - RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_ENCRYPTION_TYPE); - return -1; - } - /* Decode OAEP parameters */ - oaep = rsa_oaep_decode(cmsalg, &maskHash); - - if (oaep == NULL) { - RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_OAEP_PARAMETERS); - goto err; - } - - mgf1md = rsa_mgf1_to_md(oaep->maskGenFunc, maskHash); - if (!mgf1md) - goto err; - md = rsa_algor_to_md(oaep->hashFunc); - if (!md) - goto err; - - if (oaep->pSourceFunc) { - X509_ALGOR *plab = oaep->pSourceFunc; - if (OBJ_obj2nid(plab->algorithm) != NID_pSpecified) { - RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_LABEL_SOURCE); - goto err; - } - if (plab->parameter->type != V_ASN1_OCTET_STRING) { - RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_LABEL); - goto err; - } - - label = plab->parameter->value.octet_string->data; - /* Stop label being freed when OAEP parameters are freed */ - plab->parameter->value.octet_string->data = NULL; - labellen = plab->parameter->value.octet_string->length; - } - - if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_OAEP_PADDING) <= 0) - goto err; - if (EVP_PKEY_CTX_set_rsa_oaep_md(pkctx, md) <= 0) - goto err; - if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) - goto err; - if (EVP_PKEY_CTX_set0_rsa_oaep_label(pkctx, label, labellen) <= 0) - goto err; - /* Carry on */ - rv = 1; - - err: - RSA_OAEP_PARAMS_free(oaep); - if (maskHash) - X509_ALGOR_free(maskHash); - return rv; -} - -static int rsa_cms_encrypt(CMS_RecipientInfo *ri) -{ - const EVP_MD *md, *mgf1md; - RSA_OAEP_PARAMS *oaep = NULL; - ASN1_STRING *os = NULL; - X509_ALGOR *alg; - EVP_PKEY_CTX *pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri); - int pad_mode = RSA_PKCS1_PADDING, rv = 0, labellen; - unsigned char *label; - CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &alg); - if (pkctx) { - if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) - return 0; - } - if (pad_mode == RSA_PKCS1_PADDING) { - X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); - return 1; - } - /* Not supported */ - if (pad_mode != RSA_PKCS1_OAEP_PADDING) - return 0; - if (EVP_PKEY_CTX_get_rsa_oaep_md(pkctx, &md) <= 0) - goto err; - if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) - goto err; - labellen = EVP_PKEY_CTX_get0_rsa_oaep_label(pkctx, &label); - if (labellen < 0) - goto err; - oaep = RSA_OAEP_PARAMS_new(); - if (!oaep) - goto err; - if (!rsa_md_to_algor(&oaep->hashFunc, md)) - goto err; - if (!rsa_md_to_mgf1(&oaep->maskGenFunc, mgf1md)) - goto err; - if (labellen > 0) { - ASN1_OCTET_STRING *los = ASN1_OCTET_STRING_new(); - oaep->pSourceFunc = X509_ALGOR_new(); - if (!oaep->pSourceFunc) - goto err; - if (!los) - goto err; - if (!ASN1_OCTET_STRING_set(los, label, labellen)) { - ASN1_OCTET_STRING_free(los); - goto err; - } - X509_ALGOR_set0(oaep->pSourceFunc, OBJ_nid2obj(NID_pSpecified), - V_ASN1_OCTET_STRING, los); - } - /* create string with pss parameter encoding. */ - if (!ASN1_item_pack(oaep, ASN1_ITEM_rptr(RSA_OAEP_PARAMS), &os)) - goto err; - X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaesOaep), V_ASN1_SEQUENCE, os); - os = NULL; - rv = 1; - err: - if (oaep) - RSA_OAEP_PARAMS_free(oaep); - if (os) - ASN1_STRING_free(os); - return rv; -} -#endif - -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} -}; 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