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https://git.libssh.org/projects/libssh.git
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db9da99a36
Signed-off-by: Aris Adamantiadis <aris@0xbadc0de.be> Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
/*
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* This file is part of the SSH Library
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*
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* Copyright (c) 2009 by Aris Adamantiadis
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef LIBGCRYPT_H_
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#define LIBGCRYPT_H_
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#include "config.h"
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#ifdef HAVE_LIBGCRYPT
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#include <gcrypt.h>
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typedef gcry_md_hd_t SHACTX;
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typedef gcry_md_hd_t SHA256CTX;
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typedef gcry_md_hd_t SHA384CTX;
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typedef gcry_md_hd_t SHA512CTX;
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typedef gcry_md_hd_t MD5CTX;
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typedef gcry_md_hd_t HMACCTX;
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typedef gcry_md_hd_t EVPCTX;
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#define SHA_DIGEST_LENGTH 20
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#define SHA_DIGEST_LEN SHA_DIGEST_LENGTH
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#define MD5_DIGEST_LEN 16
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#define SHA256_DIGEST_LENGTH 32
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#define SHA256_DIGEST_LEN SHA256_DIGEST_LENGTH
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#define SHA384_DIGEST_LENGTH 48
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#define SHA384_DIGEST_LEN SHA384_DIGEST_LENGTH
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#define SHA512_DIGEST_LENGTH 64
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#define SHA512_DIGEST_LEN SHA512_DIGEST_LENGTH
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#ifndef EVP_MAX_MD_SIZE
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#define EVP_MAX_MD_SIZE 64
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#endif
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#define EVP_DIGEST_LEN EVP_MAX_MD_SIZE
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typedef gcry_mpi_t bignum;
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/* Constants for curves. */
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#define NID_gcrypt_nistp256 0
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#define NID_gcrypt_nistp384 1
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#define NID_gcrypt_nistp521 2
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/* missing gcrypt functions */
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int ssh_gcry_dec2bn(bignum *bn, const char *data);
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char *ssh_gcry_bn2dec(bignum bn);
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#define bignum_new() gcry_mpi_new(0)
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#define bignum_safe_free(num) do { \
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if ((num) != NULL) { \
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gcry_mpi_release((num)); \
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(num)=NULL; \
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} \
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} while (0)
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#define bignum_set_word(bn,n) gcry_mpi_set_ui(bn,n)
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#define bignum_bin2bn(bn,datalen,data) gcry_mpi_scan(data,GCRYMPI_FMT_USG,bn,datalen,NULL)
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#define bignum_bn2dec(num) ssh_gcry_bn2dec(num)
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#define bignum_dec2bn(num, data) ssh_gcry_dec2bn(data, num)
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#define bignum_bn2hex(num,data) gcry_mpi_aprint(GCRYMPI_FMT_HEX,data,NULL,num)
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#define bignum_hex2bn(num,datalen,data) gcry_mpi_scan(num,GCRYMPI_FMT_HEX,data,datalen,NULL)
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#define bignum_rand(num,bits) gcry_mpi_randomize(num,bits,GCRY_STRONG_RANDOM),gcry_mpi_set_bit(num,bits-1),gcry_mpi_set_bit(num,0)
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#define bignum_mod_exp(dest,generator,exp,modulo) gcry_mpi_powm(dest,generator,exp,modulo)
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#define bignum_num_bits(num) gcry_mpi_get_nbits(num)
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#define bignum_num_bytes(num) ((gcry_mpi_get_nbits(num)+7)/8)
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#define bignum_is_bit_set(num,bit) gcry_mpi_test_bit(num,bit)
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#define bignum_bn2bin(num,datalen,data) gcry_mpi_print(GCRYMPI_FMT_USG,data,datalen,NULL,num)
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#define bignum_cmp(num1,num2) gcry_mpi_cmp(num1,num2)
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/* Helper functions for data conversions. */
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/* Extract an MPI from the given s-expression SEXP named NAME which is
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encoded using INFORMAT and store it in a newly allocated ssh_string
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encoded using OUTFORMAT. */
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ssh_string ssh_sexp_extract_mpi(const gcry_sexp_t sexp,
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const char *name,
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enum gcry_mpi_format informat,
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enum gcry_mpi_format outformat);
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#endif /* HAVE_LIBGCRYPT */
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#endif /* LIBGCRYPT_H_ */
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