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| /* $Id: sph_gost.h 216 2010-06-08 09:46:57Z tp $ */ | ||
| /** | ||
| * GOST interface. This is the interface for GOST R 12 with the | ||
| * recommended parameters for SHA-3, with output lengths 256 | ||
| * and 512 bits. | ||
| * | ||
| * ==========================(LICENSE BEGIN)============================ | ||
| * | ||
| * Copyright (c) 2007-2010 Projet RNRT SAPHIR | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining | ||
| * a copy of this software and associated documentation files (the | ||
| * "Software"), to deal in the Software without restriction, including | ||
| * without limitation the rights to use, copy, modify, merge, publish, | ||
| * distribute, sublicense, and/or sell copies of the Software, and to | ||
| * permit persons to whom the Software is furnished to do so, subject to | ||
| * the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be | ||
| * included in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | ||
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | ||
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| * | ||
| * ===========================(LICENSE END)============================= | ||
| * | ||
| * @file sph_gost.h | ||
| * @author Mish <[email protected]> | ||
| */ | ||
|
|
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| #ifndef SPH_GOST_H__ | ||
| #define SPH_GOST_H__ | ||
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| #ifdef __cplusplus | ||
| extern "C"{ | ||
| #endif | ||
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| #include <stddef.h> | ||
| #include "sph_types.h" | ||
|
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| /** | ||
| * Output size (in bits) for GOST-256. | ||
| */ | ||
| #define SPH_SIZE_gost256 256 | ||
|
|
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| /** | ||
| * Output size (in bits) for GOST-512. | ||
| */ | ||
| #define SPH_SIZE_gost512 512 | ||
|
|
||
| /** | ||
| * This structure is a context for Keccak computations: it contains the | ||
| * intermediate values and some data from the last entered block. Once a | ||
| * GOST computation has been performed, the context can be reused for | ||
| * another computation. | ||
| * | ||
| * The contents of this structure are private. A running GOST computation | ||
| * can be cloned by copying the context (e.g. with a simple | ||
| * <code>memcpy()</code>). | ||
| */ | ||
|
|
||
| /** | ||
| * This structure is a context for Gost-256 computations. | ||
| */ | ||
|
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| typedef struct { | ||
| #ifndef DOXYGEN_IGNORE | ||
| unsigned char buf[32]; /* first field, for alignment */ | ||
| size_t ptr; | ||
| sph_u32 V[3][8]; | ||
| #endif | ||
| } sph_gost256_context; | ||
|
|
||
| /** | ||
| * This structure is a context for Gost-512 computations. | ||
| */ | ||
| typedef struct { | ||
| #ifndef DOXYGEN_IGNORE | ||
| unsigned char buf[64]; /* first field, for alignment */ | ||
| size_t ptr; | ||
| sph_u32 V[5][8]; | ||
| #endif | ||
| } sph_gost512_context; | ||
|
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|
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| /** | ||
| * Initialize a GOST-256 context. This process performs no memory allocation. | ||
| * | ||
| * @param cc the GOST-256 context (pointer to a | ||
| * <code>sph_gost256_context</code>) | ||
| */ | ||
| void sph_gost256_init(void *cc); | ||
|
|
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| /** | ||
| * Process some data bytes. It is acceptable that <code>len</code> is zero | ||
| * (in which case this function does nothing). | ||
| * | ||
| * @param cc the Gost-256 context | ||
| * @param data the input data | ||
| * @param len the input data length (in bytes) | ||
| */ | ||
| void sph_gost256(void *cc, const void *data, size_t len); | ||
|
|
||
| /** | ||
| * Terminate the current GOST-256 computation and output the result into | ||
| * the provided buffer. The destination buffer must be wide enough to | ||
| * accomodate the result (32 bytes). The context is automatically | ||
| * reinitialized. | ||
| * | ||
| * @param cc the GOST-256 context | ||
| * @param dst the destination buffer | ||
| */ | ||
| void sph_gost256_close(void *cc, void *dst); | ||
|
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| /** | ||
| * Add a few additional bits (0 to 7) to the current computation, then | ||
| * terminate it and output the result in the provided buffer, which must | ||
| * be wide enough to accomodate the result (32 bytes). If bit number i | ||
| * in <code>ub</code> has value 2^i, then the extra bits are those | ||
| * numbered 7 downto 8-n (this is the big-endian convention at the byte | ||
| * level). The context is automatically reinitialized. | ||
| * | ||
| * @param cc the GOST-256 context | ||
| * @param ub the extra bits | ||
| * @param n the number of extra bits (0 to 7) | ||
| * @param dst the destination buffer | ||
| */ | ||
| void sph_gost256_addbits_and_close( | ||
| void *cc, unsigned ub, unsigned n, void *dst); | ||
|
|
||
| /** | ||
| * Initialize a Gost-512 context. This process performs no memory allocation. | ||
| * | ||
| * @param cc the GOST-512 context (pointer to a | ||
| * <code>sph_gost512_context</code>) | ||
| */ | ||
| void sph_gost512_init(void *cc); | ||
|
|
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| /** | ||
| * Process some data bytes. It is acceptable that <code>len</code> is zero | ||
| * (in which case this function does nothing). | ||
| * | ||
| * @param cc the GOST-512 context | ||
| * @param data the input data | ||
| * @param len the input data length (in bytes) | ||
| */ | ||
| void sph_gost512(void *cc, const void *data, size_t len); | ||
|
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| /** | ||
| * Terminate the current GOST-512 computation and output the result into | ||
| * the provided buffer. The destination buffer must be wide enough to | ||
| * accomodate the result (64 bytes). The context is automatically | ||
| * reinitialized. | ||
| * | ||
| * @param cc the GOST-512 context | ||
| * @param dst the destination buffer | ||
| */ | ||
| void sph_gost512_close(void *cc, void *dst); | ||
|
|
||
| /** | ||
| * Add a few additional bits (0 to 7) to the current computation, then | ||
| * terminate it and output the result in the provided buffer, which must | ||
| * be wide enough to accomodate the result (64 bytes). If bit number i | ||
| * in <code>ub</code> has value 2^i, then the extra bits are those | ||
| * numbered 7 downto 8-n (this is the big-endian convention at the byte | ||
| * level). The context is automatically reinitialized. | ||
| * | ||
| * @param cc the GOST-512 context | ||
| * @param ub the extra bits | ||
| * @param n the number of extra bits (0 to 7) | ||
| * @param dst the destination buffer | ||
| */ | ||
| void sph_gost512_addbits_and_close( | ||
| void *cc, unsigned ub, unsigned n, void *dst); | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
|
|
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| #endif |
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