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; }
int RSA_verify(int dtype, const unsigned char *m, unsigned int m_len, const unsigned char *sigbuf, unsigned int siglen, RSA *rsa) { if ((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_verify) { return rsa->meth->rsa_verify(dtype, m, m_len, sigbuf, siglen, rsa); } return int_rsa_verify(dtype, m, m_len, NULL, NULL, sigbuf, siglen, rsa); }
int RSA_verify(int dtype, const uint8_t *m, unsigned int m_len, const uint8_t *sigbuf, unsigned int siglen, RSA *rsa) { if (rsa->meth->rsa_verify) { return rsa->meth->rsa_verify(dtype, m, m_len, sigbuf, siglen, rsa); } return int_rsa_verify(dtype, m, m_len, NULL, NULL, sigbuf, siglen, rsa); }