cb62c685de
Note: Not yet caught up with trunk. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6114 dfc29bdd-3216-0410-991c-e03cc46cb475
630 lines
23 KiB
C++
630 lines
23 KiB
C++
/*
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---------------------------------------------------------------------------
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Copyright (c) 2002, Dr Brian Gladman < >, Worcester, UK.
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All rights reserved.
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LICENSE TERMS
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The free distribution and use of this software in both source and binary
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form is allowed (with or without changes) provided that:
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1. distributions of this source code include the above copyright
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notice, this list of conditions and the following disclaimer;
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2. distributions in binary form include the above copyright
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notice, this list of conditions and the following disclaimer
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in the documentation and/or other associated materials;
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3. the copyright holder's name is not used to endorse products
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built using this software without specific written permission.
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ALTERNATIVELY, provided that this notice is retained in full, this product
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may be distributed under the terms of the GNU General Public License (GPL),
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in which case the provisions of the GPL apply INSTEAD OF those given above.
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DISCLAIMER
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This software is provided 'as is' with no explicit or implied warranties
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in respect of its properties, including, but not limited to, correctness
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and/or fitness for purpose.
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---------------------------------------------------------------------------
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Issue Date: 26/08/2003
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This is a byte oriented version of SHA2 that operates on arrays of bytes
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stored in memory. This code implements sha256, sha384 and sha512 but the
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latter two functions rely on efficient 64-bit integer operations that
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may not be very efficient on 32-bit machines
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The sha256 functions use a type 'sha256_ctx' to hold details of the
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current hash state and uses the following three calls:
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void sha256_begin(sha256_ctx ctx[1])
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void sha256_hash(const unsigned char data[],
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unsigned long len, sha256_ctx ctx[1])
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void sha256_end(unsigned char hval[], sha256_ctx ctx[1])
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The first subroutine initialises a hash computation by setting up the
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context in the sha256_ctx context. The second subroutine hashes 8-bit
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bytes from array data[] into the hash state withinh sha256_ctx context,
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the number of bytes to be hashed being given by the the unsigned long
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integer len. The third subroutine completes the hash calculation and
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places the resulting digest value in the array of 8-bit bytes hval[].
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The sha384 and sha512 functions are similar and use the interfaces:
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void sha384_begin(sha384_ctx ctx[1]);
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void sha384_hash(const unsigned char data[],
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unsigned long len, sha384_ctx ctx[1]);
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void sha384_end(unsigned char hval[], sha384_ctx ctx[1]);
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void sha512_begin(sha512_ctx ctx[1]);
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void sha512_hash(const unsigned char data[],
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unsigned long len, sha512_ctx ctx[1]);
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void sha512_end(unsigned char hval[], sha512_ctx ctx[1]);
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In addition there is a function sha2 that can be used to call all these
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functions using a call with a hash length parameter as follows:
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int sha2_begin(unsigned long len, sha2_ctx ctx[1]);
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void sha2_hash(const unsigned char data[],
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unsigned long len, sha2_ctx ctx[1]);
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void sha2_end(unsigned char hval[], sha2_ctx ctx[1]);
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My thanks to Erik Andersen <andersen@codepoet.org> for testing this code
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on big-endian systems and for his assistance with corrections
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*/
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/* define the hash functions that you need */
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#define SHA_2 /* for dynamic hash length */
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#define SHA_256
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#define SHA_384
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#define SHA_512
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#include <string.h> /* for memcpy() etc. */
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#include <stdlib.h> /* for _lrotr with VC++ */
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#include "sha2.h"
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#include "../os.h"
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/* BYTE ORDER IN 32-BIT WORDS
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To obtain the highest speed on processors with 32-bit words, this code
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needs to determine the byte order of the target machine. The following
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block of code is an attempt to capture the most obvious ways in which
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various environemnts define byte order. It may well fail, in which case
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the definitions will need to be set by editing at the points marked
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**** EDIT HERE IF NECESSARY **** below. My thanks to Peter Gutmann for
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some of these defines (from cryptlib).
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*/
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#define BRG_LITTLE_ENDIAN 1234 /* byte 0 is least significant (i386) */
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#define BRG_BIG_ENDIAN 4321 /* byte 0 is most significant (mc68k) */
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#ifdef __BIG_ENDIAN__
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#define PLATFORM_BYTE_ORDER BRG_BIG_ENDIAN
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#else
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#define PLATFORM_BYTE_ORDER BRG_LITTLE_ENDIAN
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#endif
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#ifdef _MSC_VER
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#pragma intrinsic(memcpy)
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#endif
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#define rotr32(x,n) (((x) >> n) | ((x) << (32 - n)))
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#if !defined(bswap_32)
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#define bswap_32(x) irr::os::Byteswap::byteswap(x)
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#endif
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#if (PLATFORM_BYTE_ORDER == BRG_LITTLE_ENDIAN)
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#define SWAP_BYTES
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#else
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#undef SWAP_BYTES
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#endif
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#if defined(SHA_2) || defined(SHA_256)
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#define SHA256_MASK (SHA256_BLOCK_SIZE - 1)
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#if defined(SWAP_BYTES)
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#define bsw_32(p,n) { int _i = (n); while(_i--) p[_i] = bswap_32(p[_i]); }
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#else
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#define bsw_32(p,n)
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#endif
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/* SHA256 mixing function definitions */
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#if 0
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#define ch(x,y,z) (((x) & (y)) ^ (~(x) & (z)))
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#define maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
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#else /* Thanks to Rich Schroeppel and Colin Plumb for the following */
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#define ch(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
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#define maj(x,y,z) (((x) & (y)) | ((z) & ((x) ^ (y))))
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#endif
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#define s256_0(x) (rotr32((x), 2) ^ rotr32((x), 13) ^ rotr32((x), 22))
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#define s256_1(x) (rotr32((x), 6) ^ rotr32((x), 11) ^ rotr32((x), 25))
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#define g256_0(x) (rotr32((x), 7) ^ rotr32((x), 18) ^ ((x) >> 3))
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#define g256_1(x) (rotr32((x), 17) ^ rotr32((x), 19) ^ ((x) >> 10))
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/* rotated SHA256 round definition. Rather than swapping variables as in */
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/* FIPS-180, different variables are 'rotated' on each round, returning */
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/* to their starting positions every eight rounds */
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#define h2(i) p[i & 15] += \
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g256_1(p[(i + 14) & 15]) + p[(i + 9) & 15] + g256_0(p[(i + 1) & 15])
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#define h2_cycle(i,j) \
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v[(7 - i) & 7] += (j ? h2(i) : p[i & 15]) + k256[i + j] \
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+ s256_1(v[(4 - i) & 7]) + ch(v[(4 - i) & 7], v[(5 - i) & 7], v[(6 - i) & 7]); \
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v[(3 - i) & 7] += v[(7 - i) & 7]; \
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v[(7 - i) & 7] += s256_0(v[(0 - i) & 7]) + maj(v[(0 - i) & 7], v[(1 - i) & 7], v[(2 - i) & 7])
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/* SHA256 mixing data */
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const sha2_32t k256[64] =
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{ n_u32(428a2f98), n_u32(71374491), n_u32(b5c0fbcf), n_u32(e9b5dba5),
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n_u32(3956c25b), n_u32(59f111f1), n_u32(923f82a4), n_u32(ab1c5ed5),
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n_u32(d807aa98), n_u32(12835b01), n_u32(243185be), n_u32(550c7dc3),
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n_u32(72be5d74), n_u32(80deb1fe), n_u32(9bdc06a7), n_u32(c19bf174),
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n_u32(e49b69c1), n_u32(efbe4786), n_u32(0fc19dc6), n_u32(240ca1cc),
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n_u32(2de92c6f), n_u32(4a7484aa), n_u32(5cb0a9dc), n_u32(76f988da),
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n_u32(983e5152), n_u32(a831c66d), n_u32(b00327c8), n_u32(bf597fc7),
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n_u32(c6e00bf3), n_u32(d5a79147), n_u32(06ca6351), n_u32(14292967),
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n_u32(27b70a85), n_u32(2e1b2138), n_u32(4d2c6dfc), n_u32(53380d13),
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n_u32(650a7354), n_u32(766a0abb), n_u32(81c2c92e), n_u32(92722c85),
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n_u32(a2bfe8a1), n_u32(a81a664b), n_u32(c24b8b70), n_u32(c76c51a3),
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n_u32(d192e819), n_u32(d6990624), n_u32(f40e3585), n_u32(106aa070),
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n_u32(19a4c116), n_u32(1e376c08), n_u32(2748774c), n_u32(34b0bcb5),
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n_u32(391c0cb3), n_u32(4ed8aa4a), n_u32(5b9cca4f), n_u32(682e6ff3),
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n_u32(748f82ee), n_u32(78a5636f), n_u32(84c87814), n_u32(8cc70208),
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n_u32(90befffa), n_u32(a4506ceb), n_u32(bef9a3f7), n_u32(c67178f2),
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};
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/* SHA256 initialisation data */
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const sha2_32t i256[8] =
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{
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n_u32(6a09e667), n_u32(bb67ae85), n_u32(3c6ef372), n_u32(a54ff53a),
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n_u32(510e527f), n_u32(9b05688c), n_u32(1f83d9ab), n_u32(5be0cd19)
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};
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sha2_void sha256_begin(sha256_ctx ctx[1])
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{
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ctx->count[0] = ctx->count[1] = 0;
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memcpy(ctx->hash, i256, 8 * sizeof(sha2_32t));
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}
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/* Compile 64 bytes of hash data into SHA256 digest value */
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/* NOTE: this routine assumes that the byte order in the */
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/* ctx->wbuf[] at this point is in such an order that low */
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/* address bytes in the ORIGINAL byte stream placed in this */
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/* buffer will now go to the high end of words on BOTH big */
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/* and little endian systems */
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sha2_void sha256_compile(sha256_ctx ctx[1])
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{ sha2_32t v[8], j, *p = ctx->wbuf;
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memcpy(v, ctx->hash, 8 * sizeof(sha2_32t));
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for(j = 0; j < 64; j += 16)
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{
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h2_cycle( 0, j); h2_cycle( 1, j); h2_cycle( 2, j); h2_cycle( 3, j);
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h2_cycle( 4, j); h2_cycle( 5, j); h2_cycle( 6, j); h2_cycle( 7, j);
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h2_cycle( 8, j); h2_cycle( 9, j); h2_cycle(10, j); h2_cycle(11, j);
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h2_cycle(12, j); h2_cycle(13, j); h2_cycle(14, j); h2_cycle(15, j);
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}
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ctx->hash[0] += v[0]; ctx->hash[1] += v[1]; ctx->hash[2] += v[2]; ctx->hash[3] += v[3];
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ctx->hash[4] += v[4]; ctx->hash[5] += v[5]; ctx->hash[6] += v[6]; ctx->hash[7] += v[7];
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}
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/* SHA256 hash data in an array of bytes into hash buffer */
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/* and call the hash_compile function as required. */
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sha2_void sha256_hash(const unsigned char data[], unsigned long len, sha256_ctx ctx[1])
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{ sha2_32t pos = (sha2_32t)(ctx->count[0] & SHA256_MASK),
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space = SHA256_BLOCK_SIZE - pos;
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const unsigned char *sp = data;
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if((ctx->count[0] += len) < len)
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++(ctx->count[1]);
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while(len >= space) /* tranfer whole blocks while possible */
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{
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memcpy(((unsigned char*)ctx->wbuf) + pos, sp, space);
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sp += space; len -= space; space = SHA256_BLOCK_SIZE; pos = 0;
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bsw_32(ctx->wbuf, SHA256_BLOCK_SIZE >> 2)
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sha256_compile(ctx);
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}
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memcpy(((unsigned char*)ctx->wbuf) + pos, sp, len);
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}
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/* SHA256 Final padding and digest calculation */
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static sha2_32t m1[4] =
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{
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n_u32(00000000), n_u32(ff000000), n_u32(ffff0000), n_u32(ffffff00)
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};
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static sha2_32t b1[4] =
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{
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n_u32(80000000), n_u32(00800000), n_u32(00008000), n_u32(00000080)
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};
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sha2_void sha256_end(unsigned char hval[], sha256_ctx ctx[1])
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{ sha2_32t i = (sha2_32t)(ctx->count[0] & SHA256_MASK);
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bsw_32(ctx->wbuf, (i + 3) >> 2)
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/* bytes in the buffer are now in an order in which references */
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/* to 32-bit words will put bytes with lower addresses into the */
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/* top of 32 bit words on BOTH big and little endian machines */
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/* we now need to mask valid bytes and add the padding which is */
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/* a single 1 bit and as many zero bits as necessary. */
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ctx->wbuf[i >> 2] = (ctx->wbuf[i >> 2] & m1[i & 3]) | b1[i & 3];
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/* we need 9 or more empty positions, one for the padding byte */
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/* (above) and eight for the length count. If there is not */
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/* enough space pad and empty the buffer */
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if(i > SHA256_BLOCK_SIZE - 9)
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{
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if(i < 60) ctx->wbuf[15] = 0;
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sha256_compile(ctx);
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i = 0;
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}
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else /* compute a word index for the empty buffer positions */
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i = (i >> 2) + 1;
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while(i < 14) /* and zero pad all but last two positions */
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ctx->wbuf[i++] = 0;
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/* the following 32-bit length fields are assembled in the */
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/* wrong byte order on little endian machines but this is */
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/* corrected later since they are only ever used as 32-bit */
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/* word values. */
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ctx->wbuf[14] = (ctx->count[1] << 3) | (ctx->count[0] >> 29);
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ctx->wbuf[15] = ctx->count[0] << 3;
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sha256_compile(ctx);
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/* extract the hash value as bytes in case the hash buffer is */
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/* mislaigned for 32-bit words */
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for(i = 0; i < SHA256_DIGEST_SIZE; ++i)
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hval[i] = (unsigned char)(ctx->hash[i >> 2] >> (8 * (~i & 3)));
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}
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sha2_void sha256(unsigned char hval[], const unsigned char data[], unsigned long len)
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{ sha256_ctx cx[1];
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sha256_begin(cx); sha256_hash(data, len, cx); sha256_end(hval, cx);
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}
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#endif
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#if defined(SHA_2) || defined(SHA_384) || defined(SHA_512)
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#define SHA512_MASK (SHA512_BLOCK_SIZE - 1)
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#define rotr64(x,n) (((x) >> n) | ((x) << (64 - n)))
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#if !defined(bswap_64)
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#define bswap_64(x) ((((sha2_64t)(bswap_32((sha2_32t)(x)))) << 32) | (bswap_32((sha2_32t)((x) >> 32))))
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#endif
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#if defined(SWAP_BYTES)
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#define bsw_64(p,n) { int _i = (n); while(_i--) p[_i] = bswap_64(p[_i]); }
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#else
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#define bsw_64(p,n)
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#endif
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/* SHA512 mixing function definitions */
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#define s512_0(x) (rotr64((x), 28) ^ rotr64((x), 34) ^ rotr64((x), 39))
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#define s512_1(x) (rotr64((x), 14) ^ rotr64((x), 18) ^ rotr64((x), 41))
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#define g512_0(x) (rotr64((x), 1) ^ rotr64((x), 8) ^ ((x) >> 7))
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#define g512_1(x) (rotr64((x), 19) ^ rotr64((x), 61) ^ ((x) >> 6))
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/* rotated SHA512 round definition. Rather than swapping variables as in */
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/* FIPS-180, different variables are 'rotated' on each round, returning */
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/* to their starting positions every eight rounds */
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#define h5(i) ctx->wbuf[i & 15] += \
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g512_1(ctx->wbuf[(i + 14) & 15]) + ctx->wbuf[(i + 9) & 15] + g512_0(ctx->wbuf[(i + 1) & 15])
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#define h5_cycle(i,j) \
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v[(7 - i) & 7] += (j ? h5(i) : ctx->wbuf[i & 15]) + k512[i + j] \
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+ s512_1(v[(4 - i) & 7]) + ch(v[(4 - i) & 7], v[(5 - i) & 7], v[(6 - i) & 7]); \
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v[(3 - i) & 7] += v[(7 - i) & 7]; \
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v[(7 - i) & 7] += s512_0(v[(0 - i) & 7]) + maj(v[(0 - i) & 7], v[(1 - i) & 7], v[(2 - i) & 7])
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/* SHA384/SHA512 mixing data */
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const sha2_64t k512[80] =
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{
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n_u64(428a2f98d728ae22), n_u64(7137449123ef65cd),
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n_u64(b5c0fbcfec4d3b2f), n_u64(e9b5dba58189dbbc),
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n_u64(3956c25bf348b538), n_u64(59f111f1b605d019),
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n_u64(923f82a4af194f9b), n_u64(ab1c5ed5da6d8118),
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n_u64(d807aa98a3030242), n_u64(12835b0145706fbe),
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n_u64(243185be4ee4b28c), n_u64(550c7dc3d5ffb4e2),
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n_u64(72be5d74f27b896f), n_u64(80deb1fe3b1696b1),
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n_u64(9bdc06a725c71235), n_u64(c19bf174cf692694),
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n_u64(e49b69c19ef14ad2), n_u64(efbe4786384f25e3),
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n_u64(0fc19dc68b8cd5b5), n_u64(240ca1cc77ac9c65),
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n_u64(2de92c6f592b0275), n_u64(4a7484aa6ea6e483),
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n_u64(5cb0a9dcbd41fbd4), n_u64(76f988da831153b5),
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n_u64(983e5152ee66dfab), n_u64(a831c66d2db43210),
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n_u64(b00327c898fb213f), n_u64(bf597fc7beef0ee4),
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n_u64(c6e00bf33da88fc2), n_u64(d5a79147930aa725),
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n_u64(06ca6351e003826f), n_u64(142929670a0e6e70),
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n_u64(27b70a8546d22ffc), n_u64(2e1b21385c26c926),
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n_u64(4d2c6dfc5ac42aed), n_u64(53380d139d95b3df),
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n_u64(650a73548baf63de), n_u64(766a0abb3c77b2a8),
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n_u64(81c2c92e47edaee6), n_u64(92722c851482353b),
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n_u64(a2bfe8a14cf10364), n_u64(a81a664bbc423001),
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n_u64(c24b8b70d0f89791), n_u64(c76c51a30654be30),
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n_u64(d192e819d6ef5218), n_u64(d69906245565a910),
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n_u64(f40e35855771202a), n_u64(106aa07032bbd1b8),
|
|
n_u64(19a4c116b8d2d0c8), n_u64(1e376c085141ab53),
|
|
n_u64(2748774cdf8eeb99), n_u64(34b0bcb5e19b48a8),
|
|
n_u64(391c0cb3c5c95a63), n_u64(4ed8aa4ae3418acb),
|
|
n_u64(5b9cca4f7763e373), n_u64(682e6ff3d6b2b8a3),
|
|
n_u64(748f82ee5defb2fc), n_u64(78a5636f43172f60),
|
|
n_u64(84c87814a1f0ab72), n_u64(8cc702081a6439ec),
|
|
n_u64(90befffa23631e28), n_u64(a4506cebde82bde9),
|
|
n_u64(bef9a3f7b2c67915), n_u64(c67178f2e372532b),
|
|
n_u64(ca273eceea26619c), n_u64(d186b8c721c0c207),
|
|
n_u64(eada7dd6cde0eb1e), n_u64(f57d4f7fee6ed178),
|
|
n_u64(06f067aa72176fba), n_u64(0a637dc5a2c898a6),
|
|
n_u64(113f9804bef90dae), n_u64(1b710b35131c471b),
|
|
n_u64(28db77f523047d84), n_u64(32caab7b40c72493),
|
|
n_u64(3c9ebe0a15c9bebc), n_u64(431d67c49c100d4c),
|
|
n_u64(4cc5d4becb3e42b6), n_u64(597f299cfc657e2a),
|
|
n_u64(5fcb6fab3ad6faec), n_u64(6c44198c4a475817)
|
|
};
|
|
|
|
/* Compile 64 bytes of hash data into SHA384/SHA512 digest value */
|
|
|
|
sha2_void sha512_compile(sha512_ctx ctx[1])
|
|
{ sha2_64t v[8];
|
|
sha2_32t j;
|
|
|
|
memcpy(v, ctx->hash, 8 * sizeof(sha2_64t));
|
|
|
|
for(j = 0; j < 80; j += 16)
|
|
{
|
|
h5_cycle( 0, j); h5_cycle( 1, j); h5_cycle( 2, j); h5_cycle( 3, j);
|
|
h5_cycle( 4, j); h5_cycle( 5, j); h5_cycle( 6, j); h5_cycle( 7, j);
|
|
h5_cycle( 8, j); h5_cycle( 9, j); h5_cycle(10, j); h5_cycle(11, j);
|
|
h5_cycle(12, j); h5_cycle(13, j); h5_cycle(14, j); h5_cycle(15, j);
|
|
}
|
|
|
|
ctx->hash[0] += v[0]; ctx->hash[1] += v[1]; ctx->hash[2] += v[2]; ctx->hash[3] += v[3];
|
|
ctx->hash[4] += v[4]; ctx->hash[5] += v[5]; ctx->hash[6] += v[6]; ctx->hash[7] += v[7];
|
|
}
|
|
|
|
/* Compile 128 bytes of hash data into SHA256 digest value */
|
|
/* NOTE: this routine assumes that the byte order in the */
|
|
/* ctx->wbuf[] at this point is in such an order that low */
|
|
/* address bytes in the ORIGINAL byte stream placed in this */
|
|
/* buffer will now go to the high end of words on BOTH big */
|
|
/* and little endian systems */
|
|
|
|
sha2_void sha512_hash(const unsigned char data[], unsigned long len, sha512_ctx ctx[1])
|
|
{ sha2_32t pos = (sha2_32t)(ctx->count[0] & SHA512_MASK),
|
|
space = SHA512_BLOCK_SIZE - pos;
|
|
const unsigned char *sp = data;
|
|
|
|
if((ctx->count[0] += len) < len)
|
|
++(ctx->count[1]);
|
|
|
|
while(len >= space) /* tranfer whole blocks while possible */
|
|
{
|
|
memcpy(((unsigned char*)ctx->wbuf) + pos, sp, space);
|
|
sp += space; len -= space; space = SHA512_BLOCK_SIZE; pos = 0;
|
|
bsw_64(ctx->wbuf, SHA512_BLOCK_SIZE >> 3);
|
|
sha512_compile(ctx);
|
|
}
|
|
|
|
memcpy(((unsigned char*)ctx->wbuf) + pos, sp, len);
|
|
}
|
|
|
|
/* SHA384/512 Final padding and digest calculation */
|
|
|
|
static sha2_64t m2[8] =
|
|
{
|
|
n_u64(0000000000000000), n_u64(ff00000000000000),
|
|
n_u64(ffff000000000000), n_u64(ffffff0000000000),
|
|
n_u64(ffffffff00000000), n_u64(ffffffffff000000),
|
|
n_u64(ffffffffffff0000), n_u64(ffffffffffffff00)
|
|
};
|
|
|
|
static sha2_64t b2[8] =
|
|
{
|
|
n_u64(8000000000000000), n_u64(0080000000000000),
|
|
n_u64(0000800000000000), n_u64(0000008000000000),
|
|
n_u64(0000000080000000), n_u64(0000000000800000),
|
|
n_u64(0000000000008000), n_u64(0000000000000080)
|
|
};
|
|
|
|
static void sha_end(unsigned char hval[], sha512_ctx ctx[1], const unsigned int hlen)
|
|
{ sha2_32t i = (sha2_32t)(ctx->count[0] & SHA512_MASK);
|
|
|
|
bsw_64(ctx->wbuf, (i + 7) >> 3);
|
|
|
|
/* bytes in the buffer are now in an order in which references */
|
|
/* to 64-bit words will put bytes with lower addresses into the */
|
|
/* top of 64 bit words on BOTH big and little endian machines */
|
|
|
|
/* we now need to mask valid bytes and add the padding which is */
|
|
/* a single 1 bit and as many zero bits as necessary. */
|
|
ctx->wbuf[i >> 3] = (ctx->wbuf[i >> 3] & m2[i & 7]) | b2[i & 7];
|
|
|
|
/* we need 17 or more empty byte positions, one for the padding */
|
|
/* byte (above) and sixteen for the length count. If there is */
|
|
/* not enough space pad and empty the buffer */
|
|
if(i > SHA512_BLOCK_SIZE - 17)
|
|
{
|
|
if(i < 120) ctx->wbuf[15] = 0;
|
|
sha512_compile(ctx);
|
|
i = 0;
|
|
}
|
|
else
|
|
i = (i >> 3) + 1;
|
|
|
|
while(i < 14)
|
|
ctx->wbuf[i++] = 0;
|
|
|
|
/* the following 64-bit length fields are assembled in the */
|
|
/* wrong byte order on little endian machines but this is */
|
|
/* corrected later since they are only ever used as 64-bit */
|
|
/* word values. */
|
|
|
|
ctx->wbuf[14] = (ctx->count[1] << 3) | (ctx->count[0] >> 61);
|
|
ctx->wbuf[15] = ctx->count[0] << 3;
|
|
|
|
sha512_compile(ctx);
|
|
|
|
/* extract the hash value as bytes in case the hash buffer is */
|
|
/* misaligned for 32-bit words */
|
|
for(i = 0; i < hlen; ++i)
|
|
hval[i] = (unsigned char)(ctx->hash[i >> 3] >> (8 * (~i & 7)));
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(SHA_2) || defined(SHA_384)
|
|
|
|
/* SHA384 initialisation data */
|
|
|
|
const sha2_64t i384[80] =
|
|
{
|
|
n_u64(cbbb9d5dc1059ed8), n_u64(629a292a367cd507),
|
|
n_u64(9159015a3070dd17), n_u64(152fecd8f70e5939),
|
|
n_u64(67332667ffc00b31), n_u64(8eb44a8768581511),
|
|
n_u64(db0c2e0d64f98fa7), n_u64(47b5481dbefa4fa4)
|
|
};
|
|
|
|
sha2_void sha384_begin(sha384_ctx ctx[1])
|
|
{
|
|
ctx->count[0] = ctx->count[1] = 0;
|
|
memcpy(ctx->hash, i384, 8 * sizeof(sha2_64t));
|
|
}
|
|
|
|
sha2_void sha384_end(unsigned char hval[], sha384_ctx ctx[1])
|
|
{
|
|
sha_end(hval, ctx, SHA384_DIGEST_SIZE);
|
|
}
|
|
|
|
sha2_void sha384(unsigned char hval[], const unsigned char data[], unsigned long len)
|
|
{ sha384_ctx cx[1];
|
|
|
|
sha384_begin(cx); sha384_hash(data, len, cx); sha384_end(hval, cx);
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(SHA_2) || defined(SHA_512)
|
|
|
|
/* SHA512 initialisation data */
|
|
|
|
const sha2_64t i512[80] =
|
|
{
|
|
n_u64(6a09e667f3bcc908), n_u64(bb67ae8584caa73b),
|
|
n_u64(3c6ef372fe94f82b), n_u64(a54ff53a5f1d36f1),
|
|
n_u64(510e527fade682d1), n_u64(9b05688c2b3e6c1f),
|
|
n_u64(1f83d9abfb41bd6b), n_u64(5be0cd19137e2179)
|
|
};
|
|
|
|
sha2_void sha512_begin(sha512_ctx ctx[1])
|
|
{
|
|
ctx->count[0] = ctx->count[1] = 0;
|
|
memcpy(ctx->hash, i512, 8 * sizeof(sha2_64t));
|
|
}
|
|
|
|
sha2_void sha512_end(unsigned char hval[], sha512_ctx ctx[1])
|
|
{
|
|
sha_end(hval, ctx, SHA512_DIGEST_SIZE);
|
|
}
|
|
|
|
sha2_void sha512(unsigned char hval[], const unsigned char data[], unsigned long len)
|
|
{ sha512_ctx cx[1];
|
|
|
|
sha512_begin(cx); sha512_hash(data, len, cx); sha512_end(hval, cx);
|
|
}
|
|
|
|
#endif
|
|
|
|
#if defined(SHA_2)
|
|
|
|
#define CTX_256(x) ((x)->uu->ctx256)
|
|
#define CTX_384(x) ((x)->uu->ctx512)
|
|
#define CTX_512(x) ((x)->uu->ctx512)
|
|
|
|
/* SHA2 initialisation */
|
|
|
|
sha2_int sha2_begin(unsigned long len, sha2_ctx ctx[1])
|
|
{ unsigned long l = len;
|
|
switch(len)
|
|
{
|
|
case 256: l = len >> 3;
|
|
/* Falls through. */
|
|
case 32: CTX_256(ctx)->count[0] = CTX_256(ctx)->count[1] = 0;
|
|
memcpy(CTX_256(ctx)->hash, i256, 32); break;
|
|
case 384: l = len >> 3;
|
|
/* Falls through. */
|
|
case 48: CTX_384(ctx)->count[0] = CTX_384(ctx)->count[1] = 0;
|
|
memcpy(CTX_384(ctx)->hash, i384, 64); break;
|
|
case 512: l = len >> 3;
|
|
/* Falls through. */
|
|
case 64: CTX_512(ctx)->count[0] = CTX_512(ctx)->count[1] = 0;
|
|
memcpy(CTX_512(ctx)->hash, i512, 64); break;
|
|
default: return SHA2_BAD;
|
|
}
|
|
|
|
ctx->sha2_len = l; return SHA2_GOOD;
|
|
}
|
|
|
|
sha2_void sha2_hash(const unsigned char data[], unsigned long len, sha2_ctx ctx[1])
|
|
{
|
|
switch(ctx->sha2_len)
|
|
{
|
|
case 32: sha256_hash(data, len, CTX_256(ctx)); return;
|
|
case 48: sha384_hash(data, len, CTX_384(ctx)); return;
|
|
case 64: sha512_hash(data, len, CTX_512(ctx)); return;
|
|
}
|
|
}
|
|
|
|
sha2_void sha2_end(unsigned char hval[], sha2_ctx ctx[1])
|
|
{
|
|
switch(ctx->sha2_len)
|
|
{
|
|
case 32: sha256_end(hval, CTX_256(ctx)); return;
|
|
case 48: sha_end(hval, CTX_384(ctx), SHA384_DIGEST_SIZE); return;
|
|
case 64: sha_end(hval, CTX_512(ctx), SHA512_DIGEST_SIZE); return;
|
|
}
|
|
}
|
|
|
|
sha2_int sha2(unsigned char hval[], unsigned long size,
|
|
const unsigned char data[], unsigned long len)
|
|
{ sha2_ctx cx[1];
|
|
|
|
if(sha2_begin(size, cx) == SHA2_GOOD)
|
|
{
|
|
sha2_hash(data, len, cx); sha2_end(hval, cx); return SHA2_GOOD;
|
|
}
|
|
else
|
|
return SHA2_BAD;
|
|
}
|
|
|
|
#endif
|
|
|