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90501bc30c
We already have OPENSSL_init_crypto() in the compat layer (now with a check of its return code, prompted by tb@). Prompted by github PR#606 from Dimitri John Ledkov. ok beck@
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
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* Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define SSH_DONT_OVERLOAD_OPENSSL_FUNCS
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#include "includes.h"
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#ifdef WITH_OPENSSL
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#include <stdarg.h>
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#include <string.h>
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#ifdef USE_OPENSSL_ENGINE
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# include <openssl/engine.h>
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# include <openssl/conf.h>
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#endif
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#include "log.h"
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#include "openssl-compat.h"
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/*
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* OpenSSL version numbers: MNNFFPPS: major minor fix patch status.
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* See the OpenSSL_version_num(3ssl) man page.
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* Versions >=3 require only major versions to match.
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* For versions <3, we accept compatible fix versions (so we allow 1.0.1
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* to work with 1.0.0). Going backwards is only allowed within a patch series.
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* See https://www.openssl.org/policies/releasestrat.html
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*/
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int
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ssh_compatible_openssl(long headerver, long libver)
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{
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long mask, hfix, lfix;
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/* exact match is always OK */
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if (headerver == libver)
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return 1;
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/*
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* For versions >= 3.0, only the major must match.
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*/
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if (headerver >= 0x30000000) {
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mask = 0xf0000000L; /* major only */
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return (headerver & mask) == (libver & mask);
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}
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/*
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* For versions >= 1.0.0, but <3, major,minor,status must match and
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* library fix version must be equal to or newer than the header.
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*/
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mask = 0xfff0000fL; /* major,minor,status */
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hfix = (headerver & 0x000ff000) >> 12;
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lfix = (libver & 0x000ff000) >> 12;
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if ( (headerver & mask) == (libver & mask) && lfix >= hfix)
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return 1;
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return 0;
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}
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void
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ssh_libcrypto_init(void)
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{
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uint64_t opts = OPENSSL_INIT_ADD_ALL_CIPHERS |
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OPENSSL_INIT_ADD_ALL_DIGESTS;
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#ifdef USE_OPENSSL_ENGINE
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/* Enable use of crypto hardware */
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ENGINE_load_builtin_engines();
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ENGINE_register_all_complete();
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/* Tell libcrypto config file to pick up engines defined there */
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opts |= OPENSSL_INIT_LOAD_CONFIG;
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#endif /* USE_OPENSSL_ENGINE */
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if (OPENSSL_init_crypto(opts, NULL) != 1)
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fatal("OPENSSL_init_crypto failed");
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}
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#ifndef HAVE_EVP_DIGESTSIGN
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int
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EVP_DigestSign(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen,
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const unsigned char *tbs, size_t tbslen)
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{
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if (sigret != NULL) {
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if (EVP_DigestSignUpdate(ctx, tbs, tbslen) <= 0)
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return 0;
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}
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return EVP_DigestSignFinal(ctx, sigret, siglen);
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}
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#endif
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#ifndef HAVE_EVP_DIGESTVERIFY
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int
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EVP_DigestVerify(EVP_MD_CTX *ctx, const unsigned char *sigret, size_t siglen,
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const unsigned char *tbs, size_t tbslen)
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{
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if (EVP_DigestVerifyUpdate(ctx, tbs, tbslen) <= 0)
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return -1;
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return EVP_DigestVerifyFinal(ctx, sigret, siglen);
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}
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#endif
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#endif /* WITH_OPENSSL */
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