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implemented sha2_hasher which supports SHA-256, SHA-384 and SHA-512

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This commit is contained in:
Martin Willi
2006-09-19 14:49:47 +00:00
parent 462129d332
commit e698dc4559
7 changed files with 741 additions and 50 deletions
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src/libstrongswan/crypto/hashers/hasher.c
+7
View File
@@ -25,6 +25,7 @@
#include "hasher.h"
#include <crypto/hashers/sha1_hasher.h>
#include <crypto/hashers/sha2_hasher.h>
#include <crypto/hashers/md5_hasher.h>
/**
@@ -51,6 +52,12 @@ hasher_t *hasher_create(hash_algorithm_t hash_algorithm)
{
return (hasher_t*)sha1_hasher_create();
}
case HASH_SHA256:
case HASH_SHA384:
case HASH_SHA512:
{
return (hasher_t*)sha2_hasher_create(hash_algorithm);
}
case HASH_MD5:
{
return (hasher_t*)md5_hasher_create();
src/libstrongswan/crypto/hashers/hasher.h
+14 -22
View File
@@ -33,25 +33,26 @@ typedef enum hash_algorithm_t hash_algorithm_t;
/**
* @brief Algorithms to use for hashing.
*
* Currently only the following algorithms are implemented and therefore supported:
* Currently only the following algorithms are implemented:
* - HASH_MD5
* - HASH_SHA1
*
* - HASH_SHA256
* - HASH_SHA384
* - HASH_SHA512
*
* @ingroup hashers
*
*/
enum hash_algorithm_t {
HASH_MD2,
/**
* Implemented in class md5_hasher_t.
*/
/** Implemented in class md5_hasher_t */
HASH_MD5,
/**
* Implemented in class sha1_hasher_t.
*/
/** Implemented in class sha1_hasher_t */
HASH_SHA1,
/** Implemented in class sha2_hasher_t */
HASH_SHA256,
/** Implemented in class sha2_hasher_t */
HASH_SHA384,
/** Implemented in class sha2_hasher_t */
HASH_SHA512,
};
@@ -68,14 +69,6 @@ typedef struct hasher_t hasher_t;
*
* @b Constructors:
* - hasher_create()
* - md5_hasher_create()
* - sha1_hasher_create()
*
* @see
* - md5_hasher_t
* - sha1_hasher_t
*
* @todo Implement more hash algorithms
*
* @ingroup hashers
*/
@@ -87,8 +80,8 @@ struct hasher_t {
* an more data can be appended to already hashed data.
* If not, the result is written back and the hasher is reseted.
*
* @warning: the hash output parameter must hold at least
* hash_t.get_block_size bytes.
* The hash output parameter must hold at least
* hash_t.get_block_size() bytes.
*
* @param this calling object
* @param data data to hash
@@ -118,8 +111,7 @@ struct hasher_t {
size_t (*get_hash_size) (hasher_t *this);
/**
* @brief Resets the hashers state, which allows
* computation of a completely new hash.
* @brief Resets the hashers state.
*
* @param this calling object
*/
@@ -145,4 +137,4 @@ struct hasher_t {
*/
hasher_t *hasher_create(hash_algorithm_t hash_algorithm);
#endif /*HASHER_H_*/
#endif /* HASHER_H_ */
src/libstrongswan/crypto/hashers/sha2_hasher.c
+643
View File
@@ -0,0 +1,643 @@
/**
* @file sha2_hasher.c
*
* @brief Implementation of hasher_sha_t.
*
*/
/*
* Copyright (C) 2006 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* Ported from Steve Reid's <[email protected]> implementation
* "SHA1 in C" found in strongSwan.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <string.h>
#include "sha2_hasher.h"
#include <definitions.h>
#define HASH_SIZE_SHA256 32
#define HASH_SIZE_SHA384 48
#define HASH_SIZE_SHA512 64
typedef struct private_sha512_hasher_t private_sha512_hasher_t;
/**
* Private data structure with hasing context for SHA384 and SHA512
*/
struct private_sha512_hasher_t {
/**
* Public interface for this hasher.
*/
sha2_hasher_t public;
unsigned char sha_out[128]; /* results are here, bytes 0..47/0..63 */
u_int64_t sha_H[8];
u_int64_t sha_blocks;
u_int64_t sha_blocksMSB;
int sha_bufCnt;
};
typedef struct private_sha256_hasher_t private_sha256_hasher_t;
/**
* Private data structure with hasing context for SHA256
*/
struct private_sha256_hasher_t {
/**
* Public interface for this hasher.
*/
sha2_hasher_t public;
unsigned char sha_out[64]; /* results are here, bytes 0...31 */
u_int32_t sha_H[8];
u_int64_t sha_blocks;
int sha_bufCnt;
};
static const u_int32_t sha256_hashInit[8] = {
0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c,
0x1f83d9ab, 0x5be0cd19
};
static const u_int32_t sha256_K[64] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
static const u_int64_t sha512_hashInit[8] = {
0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL, 0x3c6ef372fe94f82bULL,
0xa54ff53a5f1d36f1ULL, 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
};
static const u_int64_t sha384_hashInit[8] = {
0xcbbb9d5dc1059ed8ULL, 0x629a292a367cd507ULL, 0x9159015a3070dd17ULL,
0x152fecd8f70e5939ULL, 0x67332667ffc00b31ULL, 0x8eb44a8768581511ULL,
0xdb0c2e0d64f98fa7ULL, 0x47b5481dbefa4fa4ULL
};
static const u_int64_t sha512_K[80] = {
0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
};
/* set macros for SHA256 */
#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#define R(x,y) ((y) >> (x))
#define S(x,y) (((y) >> (x)) | ((y) << (32 - (x))))
#define uSig0(x) ((S(2,(x))) ^ (S(13,(x))) ^ (S(22,(x))))
#define uSig1(x) ((S(6,(x))) ^ (S(11,(x))) ^ (S(25,(x))))
#define lSig0(x) ((S(7,(x))) ^ (S(18,(x))) ^ (R(3,(x))))
#define lSig1(x) ((S(17,(x))) ^ (S(19,(x))) ^ (R(10,(x))))
/**
* Single block SHA256 transformation
*/
static void sha256_transform(private_sha256_hasher_t *ctx,
const unsigned char *datap)
{
register int j;
u_int32_t a, b, c, d, e, f, g, h;
u_int32_t T1, T2, W[64], Wm2, Wm15;
/* read the data, big endian byte order */
j = 0;
do {
W[j] = (((u_int32_t)(datap[0]))<<24) | (((u_int32_t)(datap[1]))<<16) |
(((u_int32_t)(datap[2]))<<8 ) | ((u_int32_t)(datap[3]));
datap += 4;
} while(++j < 16);
/* initialize variables a...h */
a = ctx->sha_H[0];
b = ctx->sha_H[1];
c = ctx->sha_H[2];
d = ctx->sha_H[3];
e = ctx->sha_H[4];
f = ctx->sha_H[5];
g = ctx->sha_H[6];
h = ctx->sha_H[7];
/* apply compression function */
j = 0;
do
{
if(j >= 16)
{
Wm2 = W[j - 2];
Wm15 = W[j - 15];
W[j] = lSig1(Wm2) + W[j - 7] + lSig0(Wm15) + W[j - 16];
}
T1 = h + uSig1(e) + Ch(e,f,g) + sha256_K[j] + W[j];
T2 = uSig0(a) + Maj(a,b,c);
h = g; g = f; f = e;
e = d + T1;
d = c; c = b; b = a;
a = T1 + T2;
} while(++j < 64);
/* compute intermediate hash value */
ctx->sha_H[0] += a;
ctx->sha_H[1] += b;
ctx->sha_H[2] += c;
ctx->sha_H[3] += d;
ctx->sha_H[4] += e;
ctx->sha_H[5] += f;
ctx->sha_H[6] += g;
ctx->sha_H[7] += h;
ctx->sha_blocks++;
}
/**
* Update SHA256 hash
*/
static void sha256_write(private_sha256_hasher_t *ctx,
const unsigned char *datap, int length)
{
while(length > 0)
{
if(!ctx->sha_bufCnt)
{
while(length >= sizeof(ctx->sha_out))
{
sha256_transform(ctx, datap);
datap += sizeof(ctx->sha_out);
length -= sizeof(ctx->sha_out);
}
if(!length) return;
}
ctx->sha_out[ctx->sha_bufCnt] = *datap++;
length--;
if(++ctx->sha_bufCnt == sizeof(ctx->sha_out))
{
sha256_transform(ctx, &ctx->sha_out[0]);
ctx->sha_bufCnt = 0;
}
}
}
/**
* finalize SHA256 hash
*/
static void sha256_final(private_sha256_hasher_t *ctx)
{
register int j;
u_int64_t bitLength;
u_int32_t i;
unsigned char padByte, *datap;
bitLength = (ctx->sha_blocks << 9) | (ctx->sha_bufCnt << 3);
padByte = 0x80;
sha256_write(ctx, &padByte, 1);
/* pad extra space with zeroes */
padByte = 0;
while(ctx->sha_bufCnt != 56)
{
sha256_write(ctx, &padByte, 1);
}
/* write bit length, big endian byte order */
ctx->sha_out[56] = bitLength >> 56;
ctx->sha_out[57] = bitLength >> 48;
ctx->sha_out[58] = bitLength >> 40;
ctx->sha_out[59] = bitLength >> 32;
ctx->sha_out[60] = bitLength >> 24;
ctx->sha_out[61] = bitLength >> 16;
ctx->sha_out[62] = bitLength >> 8;
ctx->sha_out[63] = bitLength;
sha256_transform(ctx, &ctx->sha_out[0]);
/* return results in ctx->sha_out[0...31] */
datap = &ctx->sha_out[0];
j = 0;
do {
i = ctx->sha_H[j];
datap[0] = i >> 24;
datap[1] = i >> 16;
datap[2] = i >> 8;
datap[3] = i;
datap += 4;
} while(++j < 8);
}
/* update macros for SHA512 */
#undef S
#undef uSig0
#undef uSig1
#undef lSig0
#undef lSig1
#define S(x,y) (((y) >> (x)) | ((y) << (64 - (x))))
#define uSig0(x) ((S(28,(x))) ^ (S(34,(x))) ^ (S(39,(x))))
#define uSig1(x) ((S(14,(x))) ^ (S(18,(x))) ^ (S(41,(x))))
#define lSig0(x) ((S(1,(x))) ^ (S(8,(x))) ^ (R(7,(x))))
#define lSig1(x) ((S(19,(x))) ^ (S(61,(x))) ^ (R(6,(x))))
/**
* Single block SHA384/SHA512 transformation
*/
static void sha512_transform(private_sha512_hasher_t *ctx,
const unsigned char *datap)
{
register int j;
u_int64_t a, b, c, d, e, f, g, h;
u_int64_t T1, T2, W[80], Wm2, Wm15;
/* read the data, big endian byte order */
j = 0;
do {
W[j] = (((u_int64_t)(datap[0]))<<56) | (((u_int64_t)(datap[1]))<<48) |
(((u_int64_t)(datap[2]))<<40) | (((u_int64_t)(datap[3]))<<32) |
(((u_int64_t)(datap[4]))<<24) | (((u_int64_t)(datap[5]))<<16) |
(((u_int64_t)(datap[6]))<<8 ) | ((u_int64_t)(datap[7]));
datap += 8;
} while(++j < 16);
/* initialize variables a...h */
a = ctx->sha_H[0];
b = ctx->sha_H[1];
c = ctx->sha_H[2];
d = ctx->sha_H[3];
e = ctx->sha_H[4];
f = ctx->sha_H[5];
g = ctx->sha_H[6];
h = ctx->sha_H[7];
/* apply compression function */
j = 0;
do {
if(j >= 16) {
Wm2 = W[j - 2];
Wm15 = W[j - 15];
W[j] = lSig1(Wm2) + W[j - 7] + lSig0(Wm15) + W[j - 16];
}
T1 = h + uSig1(e) + Ch(e,f,g) + sha512_K[j] + W[j];
T2 = uSig0(a) + Maj(a,b,c);
h = g; g = f; f = e;
e = d + T1;
d = c; c = b; b = a;
a = T1 + T2;
} while(++j < 80);
/* compute intermediate hash value */
ctx->sha_H[0] += a;
ctx->sha_H[1] += b;
ctx->sha_H[2] += c;
ctx->sha_H[3] += d;
ctx->sha_H[4] += e;
ctx->sha_H[5] += f;
ctx->sha_H[6] += g;
ctx->sha_H[7] += h;
ctx->sha_blocks++;
if(!ctx->sha_blocks) ctx->sha_blocksMSB++;
}
/**
* Update a SHA384/SHA512 hash
*/
static void sha512_write(private_sha512_hasher_t *ctx,
const unsigned char *datap, int length)
{
while(length > 0)
{
if(!ctx->sha_bufCnt)
{
while(length >= sizeof(ctx->sha_out))
{
sha512_transform(ctx, datap);
datap += sizeof(ctx->sha_out);
length -= sizeof(ctx->sha_out);
}
if(!length) return;
}
ctx->sha_out[ctx->sha_bufCnt] = *datap++;
length--;
if(++ctx->sha_bufCnt == sizeof(ctx->sha_out))
{
sha512_transform(ctx, &ctx->sha_out[0]);
ctx->sha_bufCnt = 0;
}
}
}
/**
* Finalize a SHA384/SHA512 hash
*/
static void sha512_final(private_sha512_hasher_t *ctx)
{
register int j;
u_int64_t bitLength, bitLengthMSB;
u_int64_t i;
unsigned char padByte, *datap;
bitLength = (ctx->sha_blocks << 10) | (ctx->sha_bufCnt << 3);
bitLengthMSB = (ctx->sha_blocksMSB << 10) | (ctx->sha_blocks >> 54);
padByte = 0x80;
sha512_write(ctx, &padByte, 1);
/* pad extra space with zeroes */
padByte = 0;
while(ctx->sha_bufCnt != 112)
{
sha512_write(ctx, &padByte, 1);
}
/* write bit length, big endian byte order */
ctx->sha_out[112] = bitLengthMSB >> 56;
ctx->sha_out[113] = bitLengthMSB >> 48;
ctx->sha_out[114] = bitLengthMSB >> 40;
ctx->sha_out[115] = bitLengthMSB >> 32;
ctx->sha_out[116] = bitLengthMSB >> 24;
ctx->sha_out[117] = bitLengthMSB >> 16;
ctx->sha_out[118] = bitLengthMSB >> 8;
ctx->sha_out[119] = bitLengthMSB;
ctx->sha_out[120] = bitLength >> 56;
ctx->sha_out[121] = bitLength >> 48;
ctx->sha_out[122] = bitLength >> 40;
ctx->sha_out[123] = bitLength >> 32;
ctx->sha_out[124] = bitLength >> 24;
ctx->sha_out[125] = bitLength >> 16;
ctx->sha_out[126] = bitLength >> 8;
ctx->sha_out[127] = bitLength;
sha512_transform(ctx, &ctx->sha_out[0]);
/* return results in ctx->sha_out[0...63] */
datap = &ctx->sha_out[0];
j = 0;
do {
i = ctx->sha_H[j];
datap[0] = i >> 56;
datap[1] = i >> 48;
datap[2] = i >> 40;
datap[3] = i >> 32;
datap[4] = i >> 24;
datap[5] = i >> 16;
datap[6] = i >> 8;
datap[7] = i;
datap += 8;
} while(++j < 8);
}
/**
* Implementation of hasher_t.get_hash for SHA256.
*/
static void get_hash256(private_sha256_hasher_t *this,
chunk_t chunk, u_int8_t *buffer)
{
sha256_write(this, chunk.ptr, chunk.len);
if (buffer != NULL)
{
sha256_final(this);
memcpy(buffer, this->sha_out, HASH_SIZE_SHA256);
this->public.hasher_interface.reset(&(this->public.hasher_interface));
}
}
/**
* Implementation of hasher_t.get_hash for SHA384.
*/
static void get_hash384(private_sha512_hasher_t *this,
chunk_t chunk, u_int8_t *buffer)
{
sha512_write(this, chunk.ptr, chunk.len);
if (buffer != NULL)
{
sha512_final(this);
memcpy(buffer, this->sha_out, HASH_SIZE_SHA384);
this->public.hasher_interface.reset(&(this->public.hasher_interface));
}
}
/**
* Implementation of hasher_t.get_hash for SHA512.
*/
static void get_hash512(private_sha512_hasher_t *this,
chunk_t chunk, u_int8_t *buffer)
{
sha512_write(this, chunk.ptr, chunk.len);
if (buffer != NULL)
{
sha512_final(this);
memcpy(buffer, this->sha_out, HASH_SIZE_SHA512);
this->public.hasher_interface.reset(&(this->public.hasher_interface));
}
}
/**
* Implementation of hasher_t.allocate_hash for SHA256.
*/
static void allocate_hash256(private_sha256_hasher_t *this,
chunk_t chunk, chunk_t *hash)
{
chunk_t allocated_hash;
sha256_write(this, chunk.ptr, chunk.len);
if (hash != NULL)
{
sha256_final(this);
allocated_hash = chunk_alloc(HASH_SIZE_SHA256);
memcpy(allocated_hash.ptr, this->sha_out, HASH_SIZE_SHA256);
this->public.hasher_interface.reset(&(this->public.hasher_interface));
*hash = allocated_hash;
}
}
/**
* Implementation of hasher_t.allocate_hash for SHA384.
*/
static void allocate_hash384(private_sha512_hasher_t *this,
chunk_t chunk, chunk_t *hash)
{
chunk_t allocated_hash;
sha512_write(this, chunk.ptr, chunk.len);
if (hash != NULL)
{
sha512_final(this);
allocated_hash = chunk_alloc(HASH_SIZE_SHA384);
memcpy(allocated_hash.ptr, this->sha_out, HASH_SIZE_SHA384);
this->public.hasher_interface.reset(&(this->public.hasher_interface));
*hash = allocated_hash;
}
}
/**
* Implementation of hasher_t.allocate_hash for SHA512.
*/
static void allocate_hash512(private_sha512_hasher_t *this,
chunk_t chunk, chunk_t *hash)
{
chunk_t allocated_hash;
sha512_write(this, chunk.ptr, chunk.len);
if (hash != NULL)
{
sha512_final(this);
allocated_hash = chunk_alloc(HASH_SIZE_SHA512);
memcpy(allocated_hash.ptr, this->sha_out, HASH_SIZE_SHA512);
this->public.hasher_interface.reset(&(this->public.hasher_interface));
*hash = allocated_hash;
}
}
/**
* Implementation of hasher_t.get_hash_size for SHA256.
*/
static size_t get_hash_size256(private_sha256_hasher_t *this)
{
return HASH_SIZE_SHA256;
}
/**
* Implementation of hasher_t.get_hash_size for SHA384.
*/
static size_t get_hash_size384(private_sha512_hasher_t *this)
{
return HASH_SIZE_SHA384;
}
/**
* Implementation of hasher_t.get_hash_size for SHA512.
*/
static size_t get_hash_size512(private_sha512_hasher_t *this)
{
return HASH_SIZE_SHA512;
}
/**
* Implementation of hasher_t.reset for SHA256
*/
static void reset256(private_sha256_hasher_t *ctx)
{
memcpy(&ctx->sha_H[0], &sha256_hashInit[0], sizeof(ctx->sha_H));
ctx->sha_blocks = 0;
ctx->sha_bufCnt = 0;
}
/**
* Implementation of hasher_t.reset for SHA384
*/
static void reset384(private_sha512_hasher_t *ctx)
{
memcpy(&ctx->sha_H[0], &sha384_hashInit[0], sizeof(ctx->sha_H));
ctx->sha_blocks = 0;
ctx->sha_blocksMSB = 0;
ctx->sha_bufCnt = 0;
}
/**
* Implementation of hasher_t.reset for SHA512
*/
static void reset512(private_sha512_hasher_t *ctx)
{
memcpy(&ctx->sha_H[0], &sha512_hashInit[0], sizeof(ctx->sha_H));
ctx->sha_blocks = 0;
ctx->sha_blocksMSB = 0;
ctx->sha_bufCnt = 0;
}
/**
* Implementation of hasher_t.destroy.
*/
static void destroy(sha2_hasher_t *this)
{
free(this);
}
/*
* Described in header.
*/
sha2_hasher_t *sha2_hasher_create(hash_algorithm_t algorithm)
{
sha2_hasher_t *this;
switch (algorithm)
{
case HASH_SHA256:
this = (sha2_hasher_t*)malloc_thing(private_sha256_hasher_t);
this->hasher_interface.reset = (void(*)(hasher_t*))reset256;
this->hasher_interface.get_hash_size = (size_t(*)(hasher_t*))get_hash_size256;
this->hasher_interface.get_hash = (void(*)(hasher_t*,chunk_t,u_int8_t*))get_hash256;
this->hasher_interface.allocate_hash = (void(*)(hasher_t*,chunk_t,chunk_t*))allocate_hash256;
break;
case HASH_SHA384:
/* uses SHA512 data structure */
this = (sha2_hasher_t*)malloc_thing(private_sha512_hasher_t);
this->hasher_interface.reset = (void(*)(hasher_t*))reset384;
this->hasher_interface.get_hash_size = (size_t(*)(hasher_t*))get_hash_size384;
this->hasher_interface.get_hash = (void(*)(hasher_t*,chunk_t,u_int8_t*))get_hash384;
this->hasher_interface.allocate_hash = (void(*)(hasher_t*,chunk_t,chunk_t*))allocate_hash384;
break;
case HASH_SHA512:
this = (sha2_hasher_t*)malloc_thing(private_sha512_hasher_t);
this->hasher_interface.reset = (void(*)(hasher_t*))reset512;
this->hasher_interface.get_hash_size = (size_t(*)(hasher_t*))get_hash_size512;
this->hasher_interface.get_hash = (void(*)(hasher_t*,chunk_t,u_int8_t*))get_hash512;
this->hasher_interface.allocate_hash = (void(*)(hasher_t*,chunk_t,chunk_t*))allocate_hash512;
break;
default:
return NULL;
}
this->hasher_interface.destroy = (void(*)(hasher_t*))destroy;
/* initialize */
this->hasher_interface.reset(&this->hasher_interface);
return this;
}
src/libstrongswan/crypto/hashers/sha2_hasher.h
+63
View File
@@ -0,0 +1,63 @@
/**
* @file sha2_hasher.h
*
* @brief Interface of sha2_hasher_t
*
*/
/*
* Copyright (C) 2006 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef SHA2_HASHER_H_
#define SHA2_HASHER_H_
#include <crypto/hashers/hasher.h>
typedef struct sha2_hasher_t sha2_hasher_t;
/**
* @brief Implementation of hasher_t interface using the SHA2 algorithms.
*
* SHA2 is an other name for the SHA-256, SHA-384 and SHA-512 variants of
* the SHA hash algorithm.
*
* @b Constructors:
* - hasher_create() using HASH_SHA256, HASH_SHA384 or HASH_SHA512 as algorithm
* - sha2_hasher_create()
*
* @see hasher_t
*
* @ingroup hashers
*/
struct sha2_hasher_t {
/**
* Generic hasher_t interface for this hasher.
*/
hasher_t hasher_interface;
};
/**
* @brief Creates a new sha2_hasher_t.
*
* @param algorithm HASH_SHA256, HASH_SHA384 or HASH_SHA512
* @return sha2_hasher_t object
*
* @ingroup hashers
*/
sha2_hasher_t *sha2_hasher_create(hash_algorithm_t algorithm);
#endif /* SHA2_HASHER_H_ */
src/libstrongswan/crypto/prfs/prf.c
+6 -11
View File
@@ -32,12 +32,12 @@
* String mappings for encryption_algorithm_t.
*/
mapping_t pseudo_random_function_m[] = {
{PRF_UNDEFINED, "PRF_UNDEFINED"},
{PRF_HMAC_MD5, "PRF_HMAC_MD5"},
{PRF_HMAC_SHA1, "PRF_HMAC_SHA1"},
{PRF_HMAC_TIGER, "PRF_HMAC_TIGER"},
{PRF_AES128_CBC, "PRF_AES128_CBC"},
{MAPPING_END, NULL}
{PRF_UNDEFINED, "PRF_UNDEFINED"},
{PRF_HMAC_MD5, "PRF_HMAC_MD5"},
{PRF_HMAC_SHA1, "PRF_HMAC_SHA1"},
{PRF_HMAC_TIGER, "PRF_HMAC_TIGER"},
{PRF_AES128_CBC, "PRF_AES128_CBC"},
{MAPPING_END, NULL}
};
/*
@@ -61,8 +61,3 @@ prf_t *prf_create(pseudo_random_function_t pseudo_random_function)
return NULL;
}
}
src/libstrongswan/crypto/prfs/prf.h
+6 -11
View File
@@ -31,7 +31,7 @@ typedef enum pseudo_random_function_t pseudo_random_function_t;
/**
* @brief Pseudo random function, as in IKEv2 RFC 3.3.2.
*
* Currently only the following algorithms are implemented and therefore supported:
* Currently only the following algorithms are implemented:
* - PRF_HMAC_MD5
* - PRF_HMAC_SHA1
*
@@ -39,16 +39,12 @@ typedef enum pseudo_random_function_t pseudo_random_function_t;
*/
enum pseudo_random_function_t {
PRF_UNDEFINED = 1024,
/**
* Implemented in class hmac_prf_t.
*/
/** Implemented via hmac_prf_t. */
PRF_HMAC_MD5 = 1,
/**
* Implemented in class hmac_prf_t.
*/
/** Implemented via hmac_prf_t. */
PRF_HMAC_SHA1 = 2,
PRF_HMAC_TIGER = 3,
PRF_AES128_CBC = 4
PRF_AES128_CBC = 4,
};
/**
@@ -72,9 +68,8 @@ typedef struct prf_t prf_t;
*/
struct prf_t {
/**
* @brief Generates pseudo random bytes and writes them
* in the buffer.
*
* @brief Generates pseudo random bytes and writes them in the buffer.
*
* @param this calling object
* @param seed a chunk containing the seed for the next bytes
* @param[out] buffer pointer where the generated bytes will be written
src/libstrongswan/crypto/signers/signer.h
+2 -6
View File
@@ -40,13 +40,9 @@ typedef enum integrity_algorithm_t integrity_algorithm_t;
*/
enum integrity_algorithm_t {
AUTH_UNDEFINED = 1024,
/**
* Implemented in class hmac_signer_t.
*/
/** Implemented via hmac_signer_t */
AUTH_HMAC_MD5_96 = 1,
/**
* Implemented in class hmac_signer_t.
*/
/** Implemented via hmac_signer_t */
AUTH_HMAC_SHA1_96 = 2,
AUTH_DES_MAC = 3,
AUTH_KPDK_MD5 = 4,