diff options
Diffstat (limited to 'crypto/rsa/rsa_pmeth.c')
| -rw-r--r-- | crypto/rsa/rsa_pmeth.c | 1413 |
1 files changed, 662 insertions, 751 deletions
diff --git a/crypto/rsa/rsa_pmeth.c b/crypto/rsa/rsa_pmeth.c index 7fe1b62ce3..ddda0ddc4f 100644 --- a/crypto/rsa/rsa_pmeth.c +++ b/crypto/rsa/rsa_pmeth.c @@ -1,6 +1,7 @@ /* crypto/rsa/rsa_pmeth.c */ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project 2006. +/* + * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project + * 2006. */ /* ==================================================================== * Copyright (c) 2006 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -65,803 +66,713 @@ #include <openssl/evp.h> #include <openssl/x509v3.h> #ifndef OPENSSL_NO_CMS -#include <openssl/cms.h> +# include <openssl/cms.h> #endif #ifdef OPENSSL_FIPS -#include <openssl/fips.h> +# include <openssl/fips.h> #endif #include "evp_locl.h" #include "rsa_locl.h" /* RSA pkey context structure */ -typedef struct - { - /* Key gen parameters */ - int nbits; - BIGNUM *pub_exp; - /* Keygen callback info */ - int gentmp[2]; - /* RSA padding mode */ - int pad_mode; - /* message digest */ - const EVP_MD *md; - /* message digest for MGF1 */ - const EVP_MD *mgf1md; - /* PSS salt length */ - int saltlen; - /* Temp buffer */ - unsigned char *tbuf; - /* OAEP label */ - unsigned char *oaep_label; - size_t oaep_labellen; - } RSA_PKEY_CTX; +typedef struct { + /* Key gen parameters */ + int nbits; + BIGNUM *pub_exp; + /* Keygen callback info */ + int gentmp[2]; + /* RSA padding mode */ + int pad_mode; + /* message digest */ + const EVP_MD *md; + /* message digest for MGF1 */ + const EVP_MD *mgf1md; + /* PSS salt length */ + int saltlen; + /* Temp buffer */ + unsigned char *tbuf; + /* OAEP label */ + unsigned char *oaep_label; + size_t oaep_labellen; +} RSA_PKEY_CTX; static int pkey_rsa_init(EVP_PKEY_CTX *ctx) - { - RSA_PKEY_CTX *rctx; - rctx = OPENSSL_malloc(sizeof(RSA_PKEY_CTX)); - if (!rctx) - return 0; - rctx->nbits = 1024; - rctx->pub_exp = NULL; - rctx->pad_mode = RSA_PKCS1_PADDING; - rctx->md = NULL; - rctx->mgf1md = NULL; - rctx->tbuf = NULL; - - rctx->saltlen = -2; - - rctx->oaep_label = NULL; - rctx->oaep_labellen = 0; - - ctx->data = rctx; - ctx->keygen_info = rctx->gentmp; - ctx->keygen_info_count = 2; - - return 1; - } +{ + RSA_PKEY_CTX *rctx; + rctx = OPENSSL_malloc(sizeof(RSA_PKEY_CTX)); + if (!rctx) + return 0; + rctx->nbits = 1024; + rctx->pub_exp = NULL; + rctx->pad_mode = RSA_PKCS1_PADDING; + rctx->md = NULL; + rctx->mgf1md = NULL; + rctx->tbuf = NULL; + + rctx->saltlen = -2; + + rctx->oaep_label = NULL; + rctx->oaep_labellen = 0; + + ctx->data = rctx; + ctx->keygen_info = rctx->gentmp; + ctx->keygen_info_count = 2; + + return 1; +} static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) - { - RSA_PKEY_CTX *dctx, *sctx; - if (!pkey_rsa_init(dst)) - return 0; - sctx = src->data; - dctx = dst->data; - dctx->nbits = sctx->nbits; - if (sctx->pub_exp) - { - dctx->pub_exp = BN_dup(sctx->pub_exp); - if (!dctx->pub_exp) - return 0; - } - dctx->pad_mode = sctx->pad_mode; - dctx->md = sctx->md; - dctx->mgf1md = sctx->mgf1md; - if (sctx->oaep_label) - { - if (dctx->oaep_label) - OPENSSL_free(dctx->oaep_label); - dctx->oaep_label = BUF_memdup(sctx->oaep_label, - sctx->oaep_labellen); - if (!dctx->oaep_label) - return 0; - dctx->oaep_labellen = sctx->oaep_labellen; - } - return 1; - } +{ + RSA_PKEY_CTX *dctx, *sctx; + if (!pkey_rsa_init(dst)) + return 0; + sctx = src->data; + dctx = dst->data; + dctx->nbits = sctx->nbits; + if (sctx->pub_exp) { + dctx->pub_exp = BN_dup(sctx->pub_exp); + if (!dctx->pub_exp) + return 0; + } + dctx->pad_mode = sctx->pad_mode; + dctx->md = sctx->md; + dctx->mgf1md = sctx->mgf1md; + if (sctx->oaep_label) { + if (dctx->oaep_label) + OPENSSL_free(dctx->oaep_label); + dctx->oaep_label = BUF_memdup(sctx->oaep_label, sctx->oaep_labellen); + if (!dctx->oaep_label) + return 0; + dctx->oaep_labellen = sctx->oaep_labellen; + } + return 1; +} static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk) - { - if (ctx->tbuf) - return 1; - ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey)); - if (!ctx->tbuf) - return 0; - return 1; - } +{ + if (ctx->tbuf) + return 1; + ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey)); + if (!ctx->tbuf) + return 0; + return 1; +} static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx) - { - RSA_PKEY_CTX *rctx = ctx->data; - if (rctx) - { - if (rctx->pub_exp) - BN_free(rctx->pub_exp); - if (rctx->tbuf) - OPENSSL_free(rctx->tbuf); - if (rctx->oaep_label) - OPENSSL_free(rctx->oaep_label); - OPENSSL_free(rctx); - } - } +{ + RSA_PKEY_CTX *rctx = ctx->data; + if (rctx) { + if (rctx->pub_exp) + BN_free(rctx->pub_exp); + if (rctx->tbuf) + OPENSSL_free(rctx->tbuf); + if (rctx->oaep_label) + OPENSSL_free(rctx->oaep_label); + OPENSSL_free(rctx); + } +} + #ifdef OPENSSL_FIPS -/* FIP checker. Return value indicates status of context parameters: - * 1 : redirect to FIPS. - * 0 : don't redirect to FIPS. - * -1 : illegal operation in FIPS mode. +/* + * FIP checker. Return value indicates status of context parameters: 1 : + * redirect to FIPS. 0 : don't redirect to FIPS. -1 : illegal operation in + * FIPS mode. */ static int pkey_fips_check_ctx(EVP_PKEY_CTX *ctx) - { - RSA_PKEY_CTX *rctx = ctx->data; - RSA *rsa = ctx->pkey->pkey.rsa; - int rv = -1; - if (!FIPS_mode()) - return 0; - if (rsa->flags & RSA_FLAG_NON_FIPS_ALLOW) - rv = 0; - if (!(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) && rv) - return -1; - if (rctx->md) - { - const EVP_MD *fmd; - fmd = FIPS_get_digestbynid(EVP_MD_type(rctx->md)); - if (!fmd || !(fmd->flags & EVP_MD_FLAG_FIPS)) - return rv; - } - if (rctx->mgf1md && !(rctx->mgf1md->flags & EVP_MD_FLAG_FIPS)) - { - const EVP_MD *fmd; - fmd = FIPS_get_digestbynid(EVP_MD_type(rctx->mgf1md)); - if (!fmd || !(fmd->flags & EVP_MD_FLAG_FIPS)) - return rv; - } - return 1; - } +{ + RSA_PKEY_CTX *rctx = ctx->data; + RSA *rsa = ctx->pkey->pkey.rsa; + int rv = -1; + if (!FIPS_mode()) + return 0; + if (rsa->flags & RSA_FLAG_NON_FIPS_ALLOW) + rv = 0; + if (!(rsa->meth->flags & RSA_FLAG_FIPS_METHOD) && rv) + return -1; + if (rctx->md) { + const EVP_MD *fmd; + fmd = FIPS_get_digestbynid(EVP_MD_type(rctx->md)); + if (!fmd || !(fmd->flags & EVP_MD_FLAG_FIPS)) + return rv; + } + if (rctx->mgf1md && !(rctx->mgf1md->flags & EVP_MD_FLAG_FIPS)) { + const EVP_MD *fmd; + fmd = FIPS_get_digestbynid(EVP_MD_type(rctx->mgf1md)); + if (!fmd || !(fmd->flags & EVP_MD_FLAG_FIPS)) + return rv; + } + return 1; +} #endif -static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, - const unsigned char *tbs, size_t tbslen) - { - int ret; - RSA_PKEY_CTX *rctx = ctx->data; - RSA *rsa = ctx->pkey->pkey.rsa; +static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, + size_t *siglen, const unsigned char *tbs, + size_t tbslen) +{ + int ret; + RSA_PKEY_CTX *rctx = ctx->data; + RSA *rsa = ctx->pkey->pkey.rsa; #ifdef OPENSSL_FIPS - ret = pkey_fips_check_ctx(ctx); - if (ret < 0) - { - RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE); - return -1; - } + ret = pkey_fips_check_ctx(ctx); + if (ret < 0) { + RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE); + return -1; + } #endif - if (rctx->md) - { - if (tbslen != (size_t)EVP_MD_size(rctx->md)) - { - RSAerr(RSA_F_PKEY_RSA_SIGN, - RSA_R_INVALID_DIGEST_LENGTH); - return -1; - } + if (rctx->md) { + if (tbslen != (size_t)EVP_MD_size(rctx->md)) { + RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_INVALID_DIGEST_LENGTH); + return -1; + } #ifdef OPENSSL_FIPS - if (ret > 0) - { - unsigned int slen; - ret = FIPS_rsa_sign_digest(rsa, tbs, tbslen, rctx->md, - rctx->pad_mode, - rctx->saltlen, - rctx->mgf1md, - sig, &slen); - if (ret > 0) - *siglen = slen; - else - *siglen = 0; - return ret; - } + if (ret > 0) { + unsigned int slen; + ret = FIPS_rsa_sign_digest(rsa, tbs, tbslen, rctx->md, + rctx->pad_mode, + rctx->saltlen, + rctx->mgf1md, sig, &slen); + if (ret > 0) + *siglen = slen; + else + *siglen = 0; + return ret; + } #endif - if (EVP_MD_type(rctx->md) == NID_mdc2) - { - unsigned int sltmp; - if (rctx->pad_mode != RSA_PKCS1_PADDING) - return -1; - ret = RSA_sign_ASN1_OCTET_STRING(NID_mdc2, - tbs, tbslen, sig, &sltmp, rsa); - - if (ret <= 0) - return ret; - ret = sltmp; - } - else if (rctx->pad_mode == RSA_X931_PADDING) - { - if (!setup_tbuf(rctx, ctx)) - return -1; - memcpy(rctx->tbuf, tbs, tbslen); - rctx->tbuf[tbslen] = - RSA_X931_hash_id(EVP_MD_type(rctx->md)); - ret = RSA_private_encrypt(tbslen + 1, rctx->tbuf, - sig, rsa, RSA_X931_PADDING); - } - else if (rctx->pad_mode == RSA_PKCS1_PADDING) - { - unsigned int sltmp; - ret = RSA_sign(EVP_MD_type(rctx->md), - tbs, tbslen, sig, &sltmp, rsa); - if (ret <= 0) - return ret; - ret = sltmp; - } - else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) - { - if (!setup_tbuf(rctx, ctx)) - return -1; - if (!RSA_padding_add_PKCS1_PSS_mgf1(rsa, - rctx->tbuf, tbs, - rctx->md, rctx->mgf1md, - rctx->saltlen)) - return -1; - ret = RSA_private_encrypt(RSA_size(rsa), rctx->tbuf, - sig, rsa, RSA_NO_PADDING); - } - else - return -1; - } - else - ret = RSA_private_encrypt(tbslen, tbs, sig, ctx->pkey->pkey.rsa, - rctx->pad_mode); - if (ret < 0) - return ret; - *siglen = ret; - return 1; - } - + if (EVP_MD_type(rctx->md) == NID_mdc2) { + unsigned int sltmp; + if (rctx->pad_mode != RSA_PKCS1_PADDING) + return -1; + ret = RSA_sign_ASN1_OCTET_STRING(NID_mdc2, + tbs, tbslen, sig, &sltmp, rsa); + + if (ret <= 0) + return ret; + ret = sltmp; + } else if (rctx->pad_mode == RSA_X931_PADDING) { + if (!setup_tbuf(rctx, ctx)) + return -1; + memcpy(rctx->tbuf, tbs, tbslen); + rctx->tbuf[tbslen] = RSA_X931_hash_id(EVP_MD_type(rctx->md)); + ret = RSA_private_encrypt(tbslen + 1, rctx->tbuf, + sig, rsa, RSA_X931_PADDING); + } else if (rctx->pad_mode == RSA_PKCS1_PADDING) { + unsigned int sltmp; + ret = RSA_sign(EVP_MD_type(rctx->md), + tbs, tbslen, sig, &sltmp, rsa); + if (ret <= 0) + return ret; + ret = sltmp; + } else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) { + if (!setup_tbuf(rctx, ctx)) + return -1; + if (!RSA_padding_add_PKCS1_PSS_mgf1(rsa, + rctx->tbuf, tbs, + rctx->md, rctx->mgf1md, + rctx->saltlen)) + return -1; + ret = RSA_private_encrypt(RSA_size(rsa), rctx->tbuf, + sig, rsa, RSA_NO_PADDING); + } else + return -1; + } else + ret = RSA_private_encrypt(tbslen, tbs, sig, ctx->pkey->pkey.rsa, + rctx->pad_mode); + if (ret < 0) + return ret; + *siglen = ret; + return 1; +} static int pkey_rsa_verifyrecover(EVP_PKEY_CTX *ctx, - unsigned char *rout, size_t *routlen, - const unsigned char *sig, size_t siglen) - { - int ret; - RSA_PKEY_CTX *rctx = ctx->data; - - if (rctx->md) - { - if (rctx->pad_mode == RSA_X931_PADDING) - { - if (!setup_tbuf(rctx, ctx)) - return -1; - ret = RSA_public_decrypt(siglen, sig, - rctx->tbuf, ctx->pkey->pkey.rsa, - RSA_X931_PADDING); - if (ret < 1) - return 0; - ret--; - if (rctx->tbuf[ret] != - RSA_X931_hash_id(EVP_MD_type(rctx->md))) - { - RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, - RSA_R_ALGORITHM_MISMATCH); - return 0; - } - if (ret != EVP_MD_size(rctx->md)) - { - RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, - RSA_R_INVALID_DIGEST_LENGTH); - return 0; - } - if (rout) - memcpy(rout, rctx->tbuf, ret); - } - else if (rctx->pad_mode == RSA_PKCS1_PADDING) - { - size_t sltmp; - ret = int_rsa_verify(EVP_MD_type(rctx->md), - NULL, 0, rout, &sltmp, - sig, siglen, ctx->pkey->pkey.rsa); - if (ret <= 0) - return 0; - ret = sltmp; - } - else - return -1; - } - else - ret = RSA_public_decrypt(siglen, sig, rout, ctx->pkey->pkey.rsa, - rctx->pad_mode); - if (ret < 0) - return ret; - *routlen = ret; - return 1; - } + unsigned char *rout, size_t *routlen, + const unsigned char *sig, size_t siglen) +{ + int ret; + RSA_PKEY_CTX *rctx = ctx->data; + + if (rctx->md) { + if (rctx->pad_mode == RSA_X931_PADDING) { + if (!setup_tbuf(rctx, ctx)) + return -1; + ret = RSA_public_decrypt(siglen, sig, + rctx->tbuf, ctx->pkey->pkey.rsa, + RSA_X931_PADDING); + if (ret < 1) + return 0; + ret--; + if (rctx->tbuf[ret] != RSA_X931_hash_id(EVP_MD_type(rctx->md))) { + RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, + RSA_R_ALGORITHM_MISMATCH); + return 0; + } + if (ret != EVP_MD_size(rctx->md)) { + RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, + RSA_R_INVALID_DIGEST_LENGTH); + return 0; + } + if (rout) + memcpy(rout, rctx->tbuf, ret); + } else if (rctx->pad_mode == RSA_PKCS1_PADDING) { + size_t sltmp; + ret = int_rsa_verify(EVP_MD_type(rctx->md), + NULL, 0, rout, &sltmp, + sig, siglen, ctx->pkey->pkey.rsa); + if (ret <= 0) + return 0; + ret = sltmp; + } else + return -1; + } else + ret = RSA_public_decrypt(siglen, sig, rout, ctx->pkey->pkey.rsa, + rctx->pad_mode); + if (ret < 0) + return ret; + *routlen = ret; + return 1; +} static int pkey_rsa_verify(EVP_PKEY_CTX *ctx, - const unsigned char *sig, size_t siglen, - const unsigned char *tbs, size_t tbslen) - { - RSA_PKEY_CTX *rctx = ctx->data; - RSA *rsa = ctx->pkey->pkey.rsa; - size_t rslen; + const unsigned char *sig, size_t siglen, + const unsigned char *tbs, size_t tbslen) +{ + RSA_PKEY_CTX *rctx = ctx->data; + RSA *rsa = ctx->pkey->pkey.rsa; + size_t rslen; #ifdef OPENSSL_FIPS - int rv; - rv = pkey_fips_check_ctx(ctx); - if (rv < 0) - { - RSAerr(RSA_F_PKEY_RSA_VERIFY, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE); - return -1; - } + int rv; + rv = pkey_fips_check_ctx(ctx); + if (rv < 0) { + RSAerr(RSA_F_PKEY_RSA_VERIFY, + RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE); + return -1; + } #endif - if (rctx->md) - { + if (rctx->md) { #ifdef OPENSSL_FIPS - if (rv > 0) - { - return FIPS_rsa_verify_digest(rsa, - tbs, tbslen, - rctx->md, - rctx->pad_mode, - rctx->saltlen, - rctx->mgf1md, - sig, siglen); - - } + if (rv > 0) { + return FIPS_rsa_verify_digest(rsa, + tbs, tbslen, + rctx->md, + rctx->pad_mode, + rctx->saltlen, + rctx->mgf1md, sig, siglen); + + } #endif - if (rctx->pad_mode == RSA_PKCS1_PADDING) - return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, - sig, siglen, rsa); - if (rctx->pad_mode == RSA_X931_PADDING) - { - if (pkey_rsa_verifyrecover(ctx, NULL, &rslen, - sig, siglen) <= 0) - return 0; - } - else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) - { - int ret; - if (!setup_tbuf(rctx, ctx)) - return -1; - ret = RSA_public_decrypt(siglen, sig, rctx->tbuf, - rsa, RSA_NO_PADDING); - if (ret <= 0) - return 0; - ret = RSA_verify_PKCS1_PSS_mgf1(rsa, tbs, - rctx->md, rctx->mgf1md, - rctx->tbuf, rctx->saltlen); - if (ret <= 0) - return 0; - return 1; - } - else - return -1; - } - else - { - if (!setup_tbuf(rctx, ctx)) - return -1; - rslen = RSA_public_decrypt(siglen, sig, rctx->tbuf, - rsa, rctx->pad_mode); - if (rslen == 0) - return 0; - } - - if ((rslen != tbslen) || memcmp(tbs, rctx->tbuf, rslen)) - return 0; - - return 1; - - } + if (rctx->pad_mode == RSA_PKCS1_PADDING) + return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, + sig, siglen, rsa); + if (rctx->pad_mode == RSA_X931_PADDING) { + if (pkey_rsa_verifyrecover(ctx, NULL, &rslen, sig, siglen) <= 0) + return 0; + } else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) { + int ret; + if (!setup_tbuf(rctx, ctx)) + return -1; + ret = RSA_public_decrypt(siglen, sig, rctx->tbuf, + rsa, RSA_NO_PADDING); + if (ret <= 0) + return 0; + ret = RSA_verify_PKCS1_PSS_mgf1(rsa, tbs, + rctx->md, rctx->mgf1md, + rctx->tbuf, rctx->saltlen); + if (ret <= 0) + return 0; + return 1; + } else + return -1; + } else { + if (!setup_tbuf(rctx, ctx)) + return -1; + rslen = RSA_public_decrypt(siglen, sig, rctx->tbuf, + rsa, rctx->pad_mode); + if (rslen == 0) + return 0; + } + + if ((rslen != tbslen) || memcmp(tbs, rctx->tbuf, rslen)) + return 0; + + return 1; + +} static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, - unsigned char *out, size_t *outlen, - const unsigned char *in, size_t inlen) - { - int ret; - RSA_PKEY_CTX *rctx = ctx->data; - if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) - { - int klen = RSA_size(ctx->pkey->pkey.rsa); - if (!setup_tbuf(rctx, ctx)) - return -1; - if (!RSA_padding_add_PKCS1_OAEP_mgf1(rctx->tbuf, klen, - in, inlen, - rctx->oaep_label, - rctx->oaep_labellen, - rctx->md, rctx->mgf1md)) - return -1; - ret = RSA_public_encrypt(klen, rctx->tbuf, out, - ctx->pkey->pkey.rsa, - RSA_NO_PADDING); - } - else - ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, - rctx->pad_mode); - if (ret < 0) - return ret; - *outlen = ret; - return 1; - } + unsigned char *out, size_t *outlen, + const unsigned char *in, size_t inlen) +{ + int ret; + RSA_PKEY_CTX *rctx = ctx->data; + if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) { + int klen = RSA_size(ctx->pkey->pkey.rsa); + if (!setup_tbuf(rctx, ctx)) + return -1; + if (!RSA_padding_add_PKCS1_OAEP_mgf1(rctx->tbuf, klen, + in, inlen, + rctx->oaep_label, + rctx->oaep_labellen, + rctx->md, rctx->mgf1md)) + return -1; + ret = RSA_public_encrypt(klen, rctx->tbuf, out, + ctx->pkey->pkey.rsa, RSA_NO_PADDING); + } else + ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, + rctx->pad_mode); + if (ret < 0) + return ret; + *outlen = ret; + return 1; +} static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, - unsigned char *out, size_t *outlen, - const unsigned char *in, size_t inlen) - { - int ret; - RSA_PKEY_CTX *rctx = ctx->data; - if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) - { - int i; - if (!setup_tbuf(rctx, ctx)) - return -1; - ret = RSA_private_decrypt(inlen, in, rctx->tbuf, - ctx->pkey->pkey.rsa, - RSA_NO_PADDING); - if (ret <= 0) - return ret; - for (i = 0; i < ret; i++) - { - if (rctx->tbuf[i]) - break; - } - ret = RSA_padding_check_PKCS1_OAEP_mgf1(out,ret,rctx->tbuf + i, - ret - i, ret, - rctx->oaep_label, - rctx->oaep_labellen, - rctx->md, rctx->mgf1md); - } - else - ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, - rctx->pad_mode); - if (ret < 0) - return ret; - *outlen = ret; - return 1; - } + unsigned char *out, size_t *outlen, + const unsigned char *in, size_t inlen) +{ + int ret; + RSA_PKEY_CTX *rctx = ctx->data; + if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) { + int i; + if (!setup_tbuf(rctx, ctx)) + return -1; + ret = RSA_private_decrypt(inlen, in, rctx->tbuf, + ctx->pkey->pkey.rsa, RSA_NO_PADDING); + if (ret <= 0) + return ret; + for (i = 0; i < ret; i++) { + if (rctx->tbuf[i]) + break; + } + ret = RSA_padding_check_PKCS1_OAEP_mgf1(out, ret, rctx->tbuf + i, + ret - i, ret, + rctx->oaep_label, + rctx->oaep_labellen, + rctx->md, rctx->mgf1md); + } else + ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, + rctx->pad_mode); + if (ret < 0) + return ret; + *outlen = ret; + return 1; +} static int check_padding_md(const EVP_MD *md, int padding) - { - if (!md) - return 1; - - if (padding == RSA_NO_PADDING) - { - RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE); - return 0; - } - - if (padding == RSA_X931_PADDING) - { - if (RSA_X931_hash_id(EVP_MD_type(md)) == -1) - { - RSAerr(RSA_F_CHECK_PADDING_MD, - RSA_R_INVALID_X931_DIGEST); - return 0; - } - return 1; - } - - return 1; - } - +{ + if (!md) + return 1; + + if (padding == RSA_NO_PADDING) { + RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE); + return 0; + } + + if (padding == RSA_X931_PADDING) { + if (RSA_X931_hash_id(EVP_MD_type(md)) == -1) { + RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_X931_DIGEST); + return 0; + } + return 1; + } + + return 1; +} static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) - { - RSA_PKEY_CTX *rctx = ctx->data; - switch (type) - { - case EVP_PKEY_CTRL_RSA_PADDING: - if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_PKCS1_PSS_PADDING)) - { - if (!check_padding_md(rctx->md, p1)) - return 0; - if (p1 == RSA_PKCS1_PSS_PADDING) - { - if (!(ctx->operation & - (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY))) - goto bad_pad; - if (!rctx->md) - rctx->md = EVP_sha1(); - } - if (p1 == RSA_PKCS1_OAEP_PADDING) - { - if (!(ctx->operation & EVP_PKEY_OP_TYPE_CRYPT)) - goto bad_pad; - if (!rctx->md) - rctx->md = EVP_sha1(); - } - rctx->pad_mode = p1; - return 1; - } - bad_pad: - RSAerr(RSA_F_PKEY_RSA_CTRL, - RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); - return -2; - - case EVP_PKEY_CTRL_GET_RSA_PADDING: - *(int *)p2 = rctx->pad_mode; - return 1; - - case EVP_PKEY_CTRL_RSA_PSS_SALTLEN: - case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN: - if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) - { - RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PSS_SALTLEN); - return -2; - } - if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN) - *(int *)p2 = rctx->saltlen; - else - { - if (p1 < -2) - return -2; - rctx->saltlen = p1; - } - return 1; - - case EVP_PKEY_CTRL_RSA_KEYGEN_BITS: - if (p1 < 256) - { - RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_KEYBITS); - return -2; - } - rctx->nbits = p1; - return 1; - - case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP: - if (!p2) - return -2; - BN_free(rctx->pub_exp); - rctx->pub_exp = p2; - return 1; - - case EVP_PKEY_CTRL_RSA_OAEP_MD: - case EVP_PKEY_CTRL_GET_RSA_OAEP_MD: - if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) - { - RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); - return -2; - } - if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD) - *(const EVP_MD **)p2 = rctx->md; - else - rctx->md = p2; - return 1; - - case EVP_PKEY_CTRL_MD: - if (!check_padding_md(p2, rctx->pad_mode)) - return 0; - rctx->md = p2; - return 1; - - case EVP_PKEY_CTRL_GET_MD: - *(const EVP_MD **)p2 = rctx->md; - return 1; - - case EVP_PKEY_CTRL_RSA_MGF1_MD: - case EVP_PKEY_CTRL_GET_RSA_MGF1_MD: - if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING - && rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) - { - RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_MGF1_MD); - return -2; - } - if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD) - { - if (rctx->mgf1md) - *(const EVP_MD **)p2 = rctx->mgf1md; - else - *(const EVP_MD **)p2 = rctx->md; - } - else - rctx->mgf1md = p2; - return 1; - - case EVP_PKEY_CTRL_RSA_OAEP_LABEL: - if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) - { - RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); - return -2; - } - if (rctx->oaep_label) - OPENSSL_free(rctx->oaep_label); - if (p2 && p1 > 0) - { - rctx->oaep_label = p2; - rctx->oaep_labellen = p1; - } - else - { - rctx->oaep_label = NULL; - rctx->oaep_labellen = 0; - } - return 1; - - case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL: - if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) - { - RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); - return -2; - } - *(unsigned char **)p2 = rctx->oaep_label; - return rctx->oaep_labellen; - - case EVP_PKEY_CTRL_DIGESTINIT: - case EVP_PKEY_CTRL_PKCS7_ENCRYPT: - case EVP_PKEY_CTRL_PKCS7_DECRYPT: - case EVP_PKEY_CTRL_PKCS7_SIGN: - return 1; +{ + RSA_PKEY_CTX *rctx = ctx->data; + switch (type) { + case EVP_PKEY_CTRL_RSA_PADDING: + if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_PKCS1_PSS_PADDING)) { + if (!check_padding_md(rctx->md, p1)) + return 0; + if (p1 == RSA_PKCS1_PSS_PADDING) { + if (!(ctx->operation & + (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY))) + goto bad_pad; + if (!rctx->md) + rctx->md = EVP_sha1(); + } + if (p1 == RSA_PKCS1_OAEP_PADDING) { + if (!(ctx->operation & EVP_PKEY_OP_TYPE_CRYPT)) + goto bad_pad; + if (!rctx->md) + rctx->md = EVP_sha1(); + } + rctx->pad_mode = p1; + return 1; + } + bad_pad: + RSAerr(RSA_F_PKEY_RSA_CTRL, + RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); + return -2; + + case EVP_PKEY_CTRL_GET_RSA_PADDING: + *(int *)p2 = rctx->pad_mode; + return 1; + + case EVP_PKEY_CTRL_RSA_PSS_SALTLEN: + case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN: + if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PSS_SALTLEN); + return -2; + } + if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN) + *(int *)p2 = rctx->saltlen; + else { + if (p1 < -2) + return -2; + rctx->saltlen = p1; + } + return 1; + + case EVP_PKEY_CTRL_RSA_KEYGEN_BITS: + if (p1 < 256) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_KEYBITS); + return -2; + } + rctx->nbits = p1; + return 1; + + case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP: + if (!p2) + return -2; + BN_free(rctx->pub_exp); + rctx->pub_exp = p2; + return 1; + + case EVP_PKEY_CTRL_RSA_OAEP_MD: + case EVP_PKEY_CTRL_GET_RSA_OAEP_MD: + if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); + return -2; + } + if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD) + *(const EVP_MD **)p2 = rctx->md; + else + rctx->md = p2; + return 1; + + case EVP_PKEY_CTRL_MD: + if (!check_padding_md(p2, rctx->pad_mode)) + return 0; + rctx->md = p2; + return 1; + + case EVP_PKEY_CTRL_GET_MD: + *(const EVP_MD **)p2 = rctx->md; + return 1; + + case EVP_PKEY_CTRL_RSA_MGF1_MD: + case EVP_PKEY_CTRL_GET_RSA_MGF1_MD: + if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING + && rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_MGF1_MD); + return -2; + } + if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD) { + if (rctx->mgf1md) + *(const EVP_MD **)p2 = rctx->mgf1md; + else + *(const EVP_MD **)p2 = rctx->md; + } else + rctx->mgf1md = p2; + return 1; + + case EVP_PKEY_CTRL_RSA_OAEP_LABEL: + if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); + return -2; + } + if (rctx->oaep_label) + OPENSSL_free(rctx->oaep_label); + if (p2 && p1 > 0) { + rctx->oaep_label = p2; + rctx->oaep_labellen = p1; + } else { + rctx->oaep_label = NULL; + rctx->oaep_labellen = 0; + } + return 1; + + case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL: + if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { + RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); + return -2; + } + *(unsigned char **)p2 = rctx->oaep_label; + return rctx->oaep_labellen; + + case EVP_PKEY_CTRL_DIGESTINIT: + case EVP_PKEY_CTRL_PKCS7_ENCRYPT: + case EVP_PKEY_CTRL_PKCS7_DECRYPT: + case EVP_PKEY_CTRL_PKCS7_SIGN: + |