diff options
author | djm@openbsd.org <djm@openbsd.org> | 2017-07-01 13:50:45 +0000 |
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committer | Damien Miller <djm@mindrot.org> | 2017-07-21 14:17:32 +1000 |
commit | 83fa3a044891887369ce8b487ce88d713a04df48 (patch) | |
tree | f5d227629414d0a30ef14141a5613ed31fd1985c /rsa.c | |
parent | 738c73dca2c99ee78c531b4cbeefc2008fe438f0 (diff) |
upstream commit
remove post-SSHv1 removal dead code from rsa.c and merge
the remaining bit that it still used into ssh-rsa.c; ok markus
Upstream-ID: ac8a048d24dcd89594b0052ea5e3404b473bfa2f
Diffstat (limited to 'rsa.c')
-rw-r--r-- | rsa.c | 188 |
1 files changed, 0 insertions, 188 deletions
@@ -1,188 +0,0 @@ -/* $OpenBSD: rsa.c,v 1.32 2014/06/24 01:13:21 djm Exp $ */ -/* - * Author: Tatu Ylonen <ylo@cs.hut.fi> - * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland - * All rights reserved - * - * As far as I am concerned, the code I have written for this software - * can be used freely for any purpose. Any derived versions of this - * software must be clearly marked as such, and if the derived work is - * incompatible with the protocol description in the RFC file, it must be - * called by a name other than "ssh" or "Secure Shell". - * - * - * Copyright (c) 1999 Niels Provos. 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. - * - * - * Description of the RSA algorithm can be found e.g. from the following - * sources: - * - * Bruce Schneier: Applied Cryptography. John Wiley & Sons, 1994. - * - * Jennifer Seberry and Josed Pieprzyk: Cryptography: An Introduction to - * Computer Security. Prentice-Hall, 1989. - * - * Man Young Rhee: Cryptography and Secure Data Communications. McGraw-Hill, - * 1994. - * - * R. Rivest, A. Shamir, and L. M. Adleman: Cryptographic Communications - * System and Method. US Patent 4,405,829, 1983. - * - * Hans Riesel: Prime Numbers and Computer Methods for Factorization. - * Birkhauser, 1994. - * - * The RSA Frequently Asked Questions document by RSA Data Security, - * Inc., 1995. - * - * RSA in 3 lines of perl by Adam Back <aba@atlax.ex.ac.uk>, 1995, as - * included below: - * - * [gone - had to be deleted - what a pity] - */ - -#include "includes.h" - -#include <sys/types.h> - -#include <stdarg.h> -#include <string.h> - -#include "rsa.h" -#include "log.h" -#include "ssherr.h" - -int -rsa_public_encrypt(BIGNUM *out, BIGNUM *in, RSA *key) -{ - u_char *inbuf = NULL, *outbuf = NULL; - int len, ilen, olen, r = SSH_ERR_INTERNAL_ERROR; - - if (BN_num_bits(key->e) < 2 || !BN_is_odd(key->e)) - return SSH_ERR_INVALID_ARGUMENT; - - olen = BN_num_bytes(key->n); - if ((outbuf = malloc(olen)) == NULL) { - r = SSH_ERR_ALLOC_FAIL; - goto out; - } - - ilen = BN_num_bytes(in); - if ((inbuf = malloc(ilen)) == NULL) { - r = SSH_ERR_ALLOC_FAIL; - goto out; - } - BN_bn2bin(in, inbuf); - - if ((len = RSA_public_encrypt(ilen, inbuf, outbuf, key, - RSA_PKCS1_PADDING)) <= 0) { - r = SSH_ERR_LIBCRYPTO_ERROR; - goto out; - } - - if (BN_bin2bn(outbuf, len, out) == NULL) { - r = SSH_ERR_LIBCRYPTO_ERROR; - goto out; - } - r = 0; - - out: - if (outbuf != NULL) { - explicit_bzero(outbuf, olen); - free(outbuf); - } - if (inbuf != NULL) { - explicit_bzero(inbuf, ilen); - free(inbuf); - } - return r; -} - -int -rsa_private_decrypt(BIGNUM *out, BIGNUM *in, RSA *key) -{ - u_char *inbuf = NULL, *outbuf = NULL; - int len, ilen, olen, r = SSH_ERR_INTERNAL_ERROR; - - olen = BN_num_bytes(key->n); - if ((outbuf = malloc(olen)) == NULL) { - r = SSH_ERR_ALLOC_FAIL; - goto out; - } - - ilen = BN_num_bytes(in); - if ((inbuf = malloc(ilen)) == NULL) { - r = SSH_ERR_ALLOC_FAIL; - goto out; - } - BN_bn2bin(in, inbuf); - - if ((len = RSA_private_decrypt(ilen, inbuf, outbuf, key, - RSA_PKCS1_PADDING)) <= 0) { - r = SSH_ERR_LIBCRYPTO_ERROR; - goto out; - } else if (BN_bin2bn(outbuf, len, out) == NULL) { - r = SSH_ERR_LIBCRYPTO_ERROR; - goto out; - } - r = 0; - out: - if (outbuf != NULL) { - explicit_bzero(outbuf, olen); - free(outbuf); - } - if (inbuf != NULL) { - explicit_bzero(inbuf, ilen); - free(inbuf); - } - return r; -} - -/* calculate p-1 and q-1 */ -int -rsa_generate_additional_parameters(RSA *rsa) -{ - BIGNUM *aux = NULL; - BN_CTX *ctx = NULL; - int r; - - if ((ctx = BN_CTX_new()) == NULL) - return SSH_ERR_ALLOC_FAIL; - if ((aux = BN_new()) == NULL) { - r = SSH_ERR_ALLOC_FAIL; - goto out; - } - - if ((BN_sub(aux, rsa->q, BN_value_one()) == 0) || - (BN_mod(rsa->dmq1, rsa->d, aux, ctx) == 0) || - (BN_sub(aux, rsa->p, BN_value_one()) == 0) || - (BN_mod(rsa->dmp1, rsa->d, aux, ctx) == 0)) { - r = SSH_ERR_LIBCRYPTO_ERROR; - goto out; - } - r = 0; - out: - BN_clear_free(aux); - BN_CTX_free(ctx); - return r; -} - |