From eb8dd9dca1228af0cd132f515509051ecfabf6f6 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Mon, 14 Apr 2025 17:32:06 +0000 Subject: This commit was manufactured by cvs2git to create tag 'tb_20250414'. --- src/lib/libcrypto/rsa/rsa_sign.c | 280 --------------------------------------- 1 file changed, 280 deletions(-) delete mode 100644 src/lib/libcrypto/rsa/rsa_sign.c (limited to 'src/lib/libcrypto/rsa/rsa_sign.c') diff --git a/src/lib/libcrypto/rsa/rsa_sign.c b/src/lib/libcrypto/rsa/rsa_sign.c deleted file mode 100644 index 6edd20626d..0000000000 --- a/src/lib/libcrypto/rsa/rsa_sign.c +++ /dev/null @@ -1,280 +0,0 @@ -/* $OpenBSD: rsa_sign.c,v 1.37 2025/01/05 15:39:12 tb Exp $ */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * 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 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 acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS 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 AUTHOR OR 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. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] - */ - -#include -#include - -#include -#include -#include -#include -#include - -#include "asn1_local.h" -#include "rsa_local.h" -#include "x509_local.h" - -/* Size of an SSL signature: MD5+SHA1 */ -#define SSL_SIG_LENGTH 36 - -static int encode_pkcs1(unsigned char **, int *, int , const unsigned char *, - unsigned int); - -/* - * encode_pkcs1 encodes a DigestInfo prefix of hash `type' and digest `m', as - * described in EMSA-PKCS-v1_5-ENCODE, RFC 8017 section 9. step 2. This - * encodes the DigestInfo (T and tLen) but does not add the padding. - * - * On success, it returns one and sets `*out' to a newly allocated buffer - * containing the result and `*out_len' to its length. Freeing `*out' is - * the caller's responsibility. Failure is indicated by zero. - */ -static int -encode_pkcs1(unsigned char **out, int *out_len, int type, - const unsigned char *m, unsigned int m_len) -{ - X509_SIG sig; - X509_ALGOR algor; - ASN1_TYPE parameter; - ASN1_OCTET_STRING digest; - uint8_t *der = NULL; - int len; - - sig.algor = &algor; - if ((sig.algor->algorithm = OBJ_nid2obj(type)) == NULL) { - RSAerror(RSA_R_UNKNOWN_ALGORITHM_TYPE); - return 0; - } - if (sig.algor->algorithm->length == 0) { - RSAerror( - RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD); - return 0; - } - parameter.type = V_ASN1_NULL; - parameter.value.ptr = NULL; - sig.algor->parameter = ¶meter; - - sig.digest = &digest; - sig.digest->data = (unsigned char *)m; /* TMP UGLY CAST */ - sig.digest->length = m_len; - - if ((len = i2d_X509_SIG(&sig, &der)) < 0) - return 0; - - *out = der; - *out_len = len; - - return 1; -} - -int -RSA_sign(int type, const unsigned char *m, unsigned int m_len, - unsigned char *sigret, unsigned int *siglen, RSA *rsa) -{ - const unsigned char *encoded = NULL; - unsigned char *tmps = NULL; - int encrypt_len, encoded_len = 0, ret = 0; - - if (rsa->meth->rsa_sign != NULL) - return rsa->meth->rsa_sign(type, m, m_len, sigret, siglen, rsa); - - /* Compute the encoded digest. */ - if (type == NID_md5_sha1) { - /* - * NID_md5_sha1 corresponds to the MD5/SHA1 combination in - * TLS 1.1 and earlier. It has no DigestInfo wrapper but - * otherwise is RSASSA-PKCS-v1.5. - */ - if (m_len != SSL_SIG_LENGTH) { - RSAerror(RSA_R_INVALID_DIGEST_LENGTH); - return 0; - } - encoded_len = SSL_SIG_LENGTH; - encoded = m; - } else { - if (!encode_pkcs1(&tmps, &encoded_len, type, m, m_len)) - goto err; - encoded = tmps; - } - if (encoded_len > RSA_size(rsa) - RSA_PKCS1_PADDING_SIZE) { - RSAerror(RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY); - goto err; - } - if ((encrypt_len = RSA_private_encrypt(encoded_len, encoded, sigret, - rsa, RSA_PKCS1_PADDING)) <= 0) - goto err; - - *siglen = encrypt_len; - ret = 1; - - err: - freezero(tmps, (size_t)encoded_len); - return (ret); -} -LCRYPTO_ALIAS(RSA_sign); - -/* - * int_rsa_verify verifies an RSA signature in `sigbuf' using `rsa'. It may be - * called in two modes. If `rm' is NULL, it verifies the signature for the - * digest `m'. Otherwise, it recovers the digest from the signature, writing the - * digest to `rm' and the length to `*prm_len'. `type' is the NID of the digest - * algorithm to use. It returns one on successful verification and zero - * otherwise. - */ -int -int_rsa_verify(int type, const unsigned char *m, unsigned int m_len, - unsigned char *rm, size_t *prm_len, const unsigned char *sigbuf, - size_t siglen, RSA *rsa) -{ - unsigned char *decrypt_buf, *encoded = NULL; - int decrypt_len, encoded_len = 0, ret = 0; - - if (siglen != (size_t)RSA_size(rsa)) { - RSAerror(RSA_R_WRONG_SIGNATURE_LENGTH); - return 0; - } - - /* Recover the encoded digest. */ - if ((decrypt_buf = malloc(siglen)) == NULL) { - RSAerror(ERR_R_MALLOC_FAILURE); - goto err; - } - if ((decrypt_len = RSA_public_decrypt((int)siglen, sigbuf, decrypt_buf, - rsa, RSA_PKCS1_PADDING)) <= 0) - goto err; - - if (type == NID_md5_sha1) { - /* - * NID_md5_sha1 corresponds to the MD5/SHA1 combination in - * TLS 1.1 and earlier. It has no DigestInfo wrapper but - * otherwise is RSASSA-PKCS1-v1_5. - */ - if (decrypt_len != SSL_SIG_LENGTH) { - RSAerror(RSA_R_INVALID_DIGEST_LENGTH); - goto err; - } - - if (rm != NULL) { - memcpy(rm, decrypt_buf, SSL_SIG_LENGTH); - *prm_len = SSL_SIG_LENGTH; - } else { - if (m_len != SSL_SIG_LENGTH) { - RSAerror(RSA_R_INVALID_MESSAGE_LENGTH); - goto err; - } - if (timingsafe_bcmp(decrypt_buf, - m, SSL_SIG_LENGTH) != 0) { - RSAerror(RSA_R_BAD_SIGNATURE); - goto err; - } - } - } else { - /* - * If recovering the digest, extract a digest-sized output from - * the end of `decrypt_buf' for `encode_pkcs1', then compare the - * decryption output as in a standard verification. - */ - if (rm != NULL) { - const EVP_MD *md; - - if ((md = EVP_get_digestbynid(type)) == NULL) { - RSAerror(RSA_R_UNKNOWN_ALGORITHM_TYPE); - goto err; - } - if ((m_len = EVP_MD_size(md)) > (size_t)decrypt_len) { - RSAerror(RSA_R_INVALID_DIGEST_LENGTH); - goto err; - } - m = decrypt_buf + decrypt_len - m_len; - } - - /* Construct the encoded digest and ensure it matches */ - if (!encode_pkcs1(&encoded, &encoded_len, type, m, m_len)) - goto err; - - if (encoded_len != decrypt_len || - timingsafe_bcmp(encoded, decrypt_buf, encoded_len) != 0) { - RSAerror(RSA_R_BAD_SIGNATURE); - goto err; - } - - /* Output the recovered digest. */ - if (rm != NULL) { - memcpy(rm, m, m_len); - *prm_len = m_len; - } - } - - ret = 1; - err: - freezero(encoded, (size_t)encoded_len); - freezero(decrypt_buf, siglen); - return ret; -} - -int -RSA_verify(int dtype, const unsigned char *m, unsigned int m_len, - const unsigned char *sigbuf, unsigned int siglen, RSA *rsa) -{ - if (rsa->meth->rsa_verify != NULL) - 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); -} -LCRYPTO_ALIAS(RSA_verify); -- cgit v1.2.3-55-g6feb