src/libgcrypt.h - third_party/libssh2 - Git at Google

 /*
  * Copyright (C) 2008, 2009, 2010 Simon Josefsson
  * Copyright (C) 2006, 2007, The Written Word, Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms,
  * with or without modification, are permitted provided
  * that the following conditions are met:
  *
  *   Redistributions of source code must retain the above
  *   copyright notice, this list of conditions and the
  *   following disclaimer.
  *
  *   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.
  *
  *   Neither the name of the copyright holder nor the names
  *   of any other contributors may be used to endorse or
  *   promote products derived from this software without
  *   specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  * CONTRIBUTORS "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 COPYRIGHT OWNER 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.
  */

 #include <gcrypt.h>

 #define LIBSSH2_MD5 1

 #define LIBSSH2_HMAC_RIPEMD 1
 #define LIBSSH2_HMAC_SHA256 1
 #define LIBSSH2_HMAC_SHA512 1

 #define LIBSSH2_AES 1
 #define LIBSSH2_AES_CTR 1
 #define LIBSSH2_BLOWFISH 1
 #define LIBSSH2_RC4 1
 #define LIBSSH2_CAST 1
 #define LIBSSH2_3DES 1

 #define LIBSSH2_RSA 1
 #define LIBSSH2_DSA 1

 #define MD5_DIGEST_LENGTH 16
 #define SHA_DIGEST_LENGTH 20
 #define SHA256_DIGEST_LENGTH 32

 #define _libssh2_random(buf, len)                \
   (gcry_randomize ((buf), (len), GCRY_STRONG_RANDOM), 1)

 #define libssh2_prepare_iovec(vec, len)  /* Empty. */

 #define libssh2_sha1_ctx gcry_md_hd_t

 /* returns 0 in case of failure */
 #define libssh2_sha1_init(ctx) \
   (GPG_ERR_NO_ERROR == gcry_md_open (ctx,  GCRY_MD_SHA1, 0))
 #define libssh2_sha1_update(ctx, data, len) \
   gcry_md_write (ctx, (unsigned char *) data, len)
 #define libssh2_sha1_final(ctx, out) \
   memcpy (out, gcry_md_read (ctx, 0), SHA_DIGEST_LENGTH), gcry_md_close (ctx)
 #define libssh2_sha1(message, len, out) \
   gcry_md_hash_buffer (GCRY_MD_SHA1, out, message, len)

 #define libssh2_sha256_ctx gcry_md_hd_t

 #define libssh2_sha256_init(ctx) \
   (GPG_ERR_NO_ERROR == gcry_md_open (ctx,  GCRY_MD_SHA256, 0))
 #define libssh2_sha256_update(ctx, data, len) \
   gcry_md_write (ctx, (unsigned char *) data, len)
 #define libssh2_sha256_final(ctx, out) \
   memcpy (out, gcry_md_read (ctx, 0), SHA256_DIGEST_LENGTH), gcry_md_close (ctx)
 #define libssh2_sha256(message, len, out) \
   gcry_md_hash_buffer (GCRY_MD_SHA256, out, message, len)

 #define libssh2_md5_ctx gcry_md_hd_t

 /* returns 0 in case of failure */
 #define libssh2_md5_init(ctx) \
   (GPG_ERR_NO_ERROR == gcry_md_open (ctx,  GCRY_MD_MD5, 0))

 #define libssh2_md5_update(ctx, data, len) \
   gcry_md_write (ctx, (unsigned char *) data, len)
 #define libssh2_md5_final(ctx, out) \
   memcpy (out, gcry_md_read (ctx, 0), MD5_DIGEST_LENGTH), gcry_md_close (ctx)
 #define libssh2_md5(message, len, out) \
   gcry_md_hash_buffer (GCRY_MD_MD5, out, message, len)

 #define libssh2_hmac_ctx gcry_md_hd_t
 #define libssh2_hmac_ctx_init(ctx)
 #define libssh2_hmac_sha1_init(ctx, key, keylen) \
   gcry_md_open (ctx, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC), \
     gcry_md_setkey (*ctx, key, keylen)
 #define libssh2_hmac_md5_init(ctx, key, keylen) \
   gcry_md_open (ctx, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC), \
     gcry_md_setkey (*ctx, key, keylen)
 #define libssh2_hmac_ripemd160_init(ctx, key, keylen) \
   gcry_md_open (ctx, GCRY_MD_RMD160, GCRY_MD_FLAG_HMAC), \
     gcry_md_setkey (*ctx, key, keylen)
 #define libssh2_hmac_sha256_init(ctx, key, keylen) \
   gcry_md_open (ctx, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC), \
     gcry_md_setkey (*ctx, key, keylen)
 #define libssh2_hmac_sha512_init(ctx, key, keylen) \
   gcry_md_open (ctx, GCRY_MD_SHA512, GCRY_MD_FLAG_HMAC), \
     gcry_md_setkey (*ctx, key, keylen)
 #define libssh2_hmac_update(ctx, data, datalen) \
   gcry_md_write (ctx, (unsigned char *) data, datalen)
 #define libssh2_hmac_final(ctx, data) \
   memcpy (data, gcry_md_read (ctx, 0), \
       gcry_md_get_algo_dlen (gcry_md_get_algo (ctx)))
 #define libssh2_hmac_cleanup(ctx) gcry_md_close (*ctx);

 #define libssh2_crypto_init() gcry_control (GCRYCTL_DISABLE_SECMEM)
 #define libssh2_crypto_exit()

 #define libssh2_rsa_ctx struct gcry_sexp

 #define _libssh2_rsa_free(rsactx)  gcry_sexp_release (rsactx)

 #define libssh2_dsa_ctx struct gcry_sexp

 #define _libssh2_dsa_free(dsactx)  gcry_sexp_release (dsactx)

 #define _libssh2_cipher_type(name) int name
 #define _libssh2_cipher_ctx gcry_cipher_hd_t

 #define _libssh2_gcry_ciphermode(c,m) ((c << 8) | m)
 #define _libssh2_gcry_cipher(c) (c >> 8)
 #define _libssh2_gcry_mode(m) (m & 0xFF)

 #define _libssh2_cipher_aes256ctr \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CTR)
 #define _libssh2_cipher_aes192ctr \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CTR)
 #define _libssh2_cipher_aes128ctr \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CTR)
 #define _libssh2_cipher_aes256 \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CBC)
 #define _libssh2_cipher_aes192 \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CBC)
 #define _libssh2_cipher_aes128 \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CBC)
 #define _libssh2_cipher_blowfish \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_BLOWFISH, GCRY_CIPHER_MODE_CBC)
 #define _libssh2_cipher_arcfour \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_ARCFOUR, GCRY_CIPHER_MODE_STREAM)
 #define _libssh2_cipher_cast5 \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_CAST5, GCRY_CIPHER_MODE_CBC)
 #define _libssh2_cipher_3des \
   _libssh2_gcry_ciphermode(GCRY_CIPHER_3DES, GCRY_CIPHER_MODE_CBC)


 #define _libssh2_cipher_dtor(ctx) gcry_cipher_close(*(ctx))

 #define _libssh2_bn struct gcry_mpi
 #define _libssh2_bn_ctx int
 #define _libssh2_bn_ctx_new() 0
 #define _libssh2_bn_ctx_free(bnctx) ((void)0)
 #define _libssh2_bn_init() gcry_mpi_new(0)
 #define _libssh2_bn_init_from_bin() NULL /* because gcry_mpi_scan() creates a new bignum */
 #define _libssh2_bn_set_word(bn, val) gcry_mpi_set_ui(bn, val)
 #define _libssh2_bn_from_bin(bn, len, val) gcry_mpi_scan(&((bn)), GCRYMPI_FMT_USG, val, len, NULL)
 #define _libssh2_bn_to_bin(bn, val) gcry_mpi_print (GCRYMPI_FMT_USG, val, _libssh2_bn_bytes(bn), NULL, bn)
 #define _libssh2_bn_bytes(bn) (gcry_mpi_get_nbits (bn) / 8 + ((gcry_mpi_get_nbits (bn) % 8 == 0) ? 0 : 1))
 #define _libssh2_bn_bits(bn) gcry_mpi_get_nbits (bn)
 #define _libssh2_bn_free(bn) gcry_mpi_release(bn)

 #define _libssh2_dh_ctx struct gcry_mpi *
 #define libssh2_dh_init(dhctx) _libssh2_dh_init(dhctx)
 #define libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) \
         _libssh2_dh_key_pair(dhctx, public, g, p, group_order)
 #define libssh2_dh_secret(dhctx, secret, f, p, bnctx) \
         _libssh2_dh_secret(dhctx, secret, f, p)
 #define libssh2_dh_dtor(dhctx) _libssh2_dh_dtor(dhctx)
 extern void _libssh2_dh_init(_libssh2_dh_ctx *dhctx);
 extern int _libssh2_dh_key_pair(_libssh2_dh_ctx *dhctx, _libssh2_bn *public,
                                 _libssh2_bn *g, _libssh2_bn *p,
                                 int group_order);
 extern int _libssh2_dh_secret(_libssh2_dh_ctx *dhctx, _libssh2_bn *secret,
                               _libssh2_bn *f, _libssh2_bn *p);
 extern void _libssh2_dh_dtor(_libssh2_dh_ctx *dhctx);
	/*
	* Copyright (C) 2008, 2009, 2010 Simon Josefsson
	* Copyright (C) 2006, 2007, The Written Word, Inc.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms,
	* with or without modification, are permitted provided
	* that the following conditions are met:
	*
	* Redistributions of source code must retain the above
	* copyright notice, this list of conditions and the
	* following disclaimer.
	*
	* 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.
	*
	* Neither the name of the copyright holder nor the names
	* of any other contributors may be used to endorse or
	* promote products derived from this software without
	* specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
	* CONTRIBUTORS "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 COPYRIGHT OWNER 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.
	*/

	#include <gcrypt.h>

	#define LIBSSH2_MD5 1

	#define LIBSSH2_HMAC_RIPEMD 1
	#define LIBSSH2_HMAC_SHA256 1
	#define LIBSSH2_HMAC_SHA512 1

	#define LIBSSH2_AES 1
	#define LIBSSH2_AES_CTR 1
	#define LIBSSH2_BLOWFISH 1
	#define LIBSSH2_RC4 1
	#define LIBSSH2_CAST 1
	#define LIBSSH2_3DES 1

	#define LIBSSH2_RSA 1
	#define LIBSSH2_DSA 1

	#define MD5_DIGEST_LENGTH 16
	#define SHA_DIGEST_LENGTH 20
	#define SHA256_DIGEST_LENGTH 32

	#define _libssh2_random(buf, len) \
	(gcry_randomize ((buf), (len), GCRY_STRONG_RANDOM), 1)

	#define libssh2_prepare_iovec(vec, len) /* Empty. */

	#define libssh2_sha1_ctx gcry_md_hd_t

	/* returns 0 in case of failure */
	#define libssh2_sha1_init(ctx) \
	(GPG_ERR_NO_ERROR == gcry_md_open (ctx, GCRY_MD_SHA1, 0))
	#define libssh2_sha1_update(ctx, data, len) \
	gcry_md_write (ctx, (unsigned char *) data, len)
	#define libssh2_sha1_final(ctx, out) \
	memcpy (out, gcry_md_read (ctx, 0), SHA_DIGEST_LENGTH), gcry_md_close (ctx)
	#define libssh2_sha1(message, len, out) \
	gcry_md_hash_buffer (GCRY_MD_SHA1, out, message, len)

	#define libssh2_sha256_ctx gcry_md_hd_t

	#define libssh2_sha256_init(ctx) \
	(GPG_ERR_NO_ERROR == gcry_md_open (ctx, GCRY_MD_SHA256, 0))
	#define libssh2_sha256_update(ctx, data, len) \
	gcry_md_write (ctx, (unsigned char *) data, len)
	#define libssh2_sha256_final(ctx, out) \
	memcpy (out, gcry_md_read (ctx, 0), SHA256_DIGEST_LENGTH), gcry_md_close (ctx)
	#define libssh2_sha256(message, len, out) \
	gcry_md_hash_buffer (GCRY_MD_SHA256, out, message, len)

	#define libssh2_md5_ctx gcry_md_hd_t

	/* returns 0 in case of failure */
	#define libssh2_md5_init(ctx) \
	(GPG_ERR_NO_ERROR == gcry_md_open (ctx, GCRY_MD_MD5, 0))

	#define libssh2_md5_update(ctx, data, len) \
	gcry_md_write (ctx, (unsigned char *) data, len)
	#define libssh2_md5_final(ctx, out) \
	memcpy (out, gcry_md_read (ctx, 0), MD5_DIGEST_LENGTH), gcry_md_close (ctx)
	#define libssh2_md5(message, len, out) \
	gcry_md_hash_buffer (GCRY_MD_MD5, out, message, len)

	#define libssh2_hmac_ctx gcry_md_hd_t
	#define libssh2_hmac_ctx_init(ctx)
	#define libssh2_hmac_sha1_init(ctx, key, keylen) \
	gcry_md_open (ctx, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC), \
	gcry_md_setkey (*ctx, key, keylen)
	#define libssh2_hmac_md5_init(ctx, key, keylen) \
	gcry_md_open (ctx, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC), \
	gcry_md_setkey (*ctx, key, keylen)
	#define libssh2_hmac_ripemd160_init(ctx, key, keylen) \
	gcry_md_open (ctx, GCRY_MD_RMD160, GCRY_MD_FLAG_HMAC), \
	gcry_md_setkey (*ctx, key, keylen)
	#define libssh2_hmac_sha256_init(ctx, key, keylen) \
	gcry_md_open (ctx, GCRY_MD_SHA256, GCRY_MD_FLAG_HMAC), \
	gcry_md_setkey (*ctx, key, keylen)
	#define libssh2_hmac_sha512_init(ctx, key, keylen) \
	gcry_md_open (ctx, GCRY_MD_SHA512, GCRY_MD_FLAG_HMAC), \
	gcry_md_setkey (*ctx, key, keylen)
	#define libssh2_hmac_update(ctx, data, datalen) \
	gcry_md_write (ctx, (unsigned char *) data, datalen)
	#define libssh2_hmac_final(ctx, data) \
	memcpy (data, gcry_md_read (ctx, 0), \
	gcry_md_get_algo_dlen (gcry_md_get_algo (ctx)))
	#define libssh2_hmac_cleanup(ctx) gcry_md_close (*ctx);

	#define libssh2_crypto_init() gcry_control (GCRYCTL_DISABLE_SECMEM)
	#define libssh2_crypto_exit()

	#define libssh2_rsa_ctx struct gcry_sexp

	#define _libssh2_rsa_free(rsactx) gcry_sexp_release (rsactx)

	#define libssh2_dsa_ctx struct gcry_sexp

	#define _libssh2_dsa_free(dsactx) gcry_sexp_release (dsactx)

	#define _libssh2_cipher_type(name) int name
	#define _libssh2_cipher_ctx gcry_cipher_hd_t

	#define _libssh2_gcry_ciphermode(c,m) ((c << 8) \| m)
	#define _libssh2_gcry_cipher(c) (c >> 8)
	#define _libssh2_gcry_mode(m) (m & 0xFF)

	#define _libssh2_cipher_aes256ctr \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CTR)
	#define _libssh2_cipher_aes192ctr \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CTR)
	#define _libssh2_cipher_aes128ctr \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CTR)
	#define _libssh2_cipher_aes256 \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CBC)
	#define _libssh2_cipher_aes192 \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CBC)
	#define _libssh2_cipher_aes128 \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CBC)
	#define _libssh2_cipher_blowfish \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_BLOWFISH, GCRY_CIPHER_MODE_CBC)
	#define _libssh2_cipher_arcfour \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_ARCFOUR, GCRY_CIPHER_MODE_STREAM)
	#define _libssh2_cipher_cast5 \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_CAST5, GCRY_CIPHER_MODE_CBC)
	#define _libssh2_cipher_3des \
	_libssh2_gcry_ciphermode(GCRY_CIPHER_3DES, GCRY_CIPHER_MODE_CBC)


	#define _libssh2_cipher_dtor(ctx) gcry_cipher_close(*(ctx))

	#define _libssh2_bn struct gcry_mpi
	#define _libssh2_bn_ctx int
	#define _libssh2_bn_ctx_new() 0
	#define _libssh2_bn_ctx_free(bnctx) ((void)0)
	#define _libssh2_bn_init() gcry_mpi_new(0)
	#define _libssh2_bn_init_from_bin() NULL /* because gcry_mpi_scan() creates a new bignum */
	#define _libssh2_bn_set_word(bn, val) gcry_mpi_set_ui(bn, val)
	#define _libssh2_bn_from_bin(bn, len, val) gcry_mpi_scan(&((bn)), GCRYMPI_FMT_USG, val, len, NULL)
	#define _libssh2_bn_to_bin(bn, val) gcry_mpi_print (GCRYMPI_FMT_USG, val, _libssh2_bn_bytes(bn), NULL, bn)
	#define _libssh2_bn_bytes(bn) (gcry_mpi_get_nbits (bn) / 8 + ((gcry_mpi_get_nbits (bn) % 8 == 0) ? 0 : 1))
	#define _libssh2_bn_bits(bn) gcry_mpi_get_nbits (bn)
	#define _libssh2_bn_free(bn) gcry_mpi_release(bn)

	#define _libssh2_dh_ctx struct gcry_mpi *
	#define libssh2_dh_init(dhctx) _libssh2_dh_init(dhctx)
	#define libssh2_dh_key_pair(dhctx, public, g, p, group_order, bnctx) \
	_libssh2_dh_key_pair(dhctx, public, g, p, group_order)
	#define libssh2_dh_secret(dhctx, secret, f, p, bnctx) \
	_libssh2_dh_secret(dhctx, secret, f, p)
	#define libssh2_dh_dtor(dhctx) _libssh2_dh_dtor(dhctx)
	extern void _libssh2_dh_init(_libssh2_dh_ctx *dhctx);
	extern int _libssh2_dh_key_pair(_libssh2_dh_ctx dhctx, _libssh2_bn public,
	_libssh2_bn g, _libssh2_bn p,
	int group_order);
	extern int _libssh2_dh_secret(_libssh2_dh_ctx dhctx, _libssh2_bn secret,
	_libssh2_bn f, _libssh2_bn p);
	extern void _libssh2_dh_dtor(_libssh2_dh_ctx *dhctx);