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; #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; } #endif if (rctx->md) { 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_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; } #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; } #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; } #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; }