207 lines
5.3 KiB
C
207 lines
5.3 KiB
C
/* sha2.h
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The sha2 family of hash functions.
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Copyright (C) 2001, 2012 Niels Möller
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This file is part of GNU Nettle.
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GNU Nettle is free software: you can redistribute it and/or
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modify it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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or both in parallel, as here.
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GNU Nettle 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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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see http://www.gnu.org/licenses/.
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*/
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#ifndef NETTLE_SHA2_H_INCLUDED
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#define NETTLE_SHA2_H_INCLUDED
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#include "nettle-types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Name mangling */
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#define sha224_init nettle_sha224_init
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#define sha224_digest nettle_sha224_digest
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#define sha256_init nettle_sha256_init
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#define sha256_update nettle_sha256_update
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#define sha256_digest nettle_sha256_digest
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#define sha384_init nettle_sha384_init
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#define sha384_digest nettle_sha384_digest
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#define sha512_init nettle_sha512_init
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#define sha512_update nettle_sha512_update
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#define sha512_digest nettle_sha512_digest
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#define sha512_224_init nettle_sha512_224_init
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#define sha512_224_digest nettle_sha512_224_digest
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#define sha512_256_init nettle_sha512_256_init
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#define sha512_256_digest nettle_sha512_256_digest
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/* For backwards compatibility */
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#define SHA224_DATA_SIZE SHA256_BLOCK_SIZE
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#define SHA256_DATA_SIZE SHA256_BLOCK_SIZE
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#define SHA512_DATA_SIZE SHA512_BLOCK_SIZE
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#define SHA384_DATA_SIZE SHA512_BLOCK_SIZE
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/* SHA256 */
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#define SHA256_DIGEST_SIZE 32
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#define SHA256_BLOCK_SIZE 64
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/* Digest is kept internally as 8 32-bit words. */
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#define _SHA256_DIGEST_LENGTH 8
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struct sha256_ctx
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{
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uint32_t state[_SHA256_DIGEST_LENGTH]; /* State variables */
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uint64_t count; /* 64-bit block count */
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uint8_t block[SHA256_BLOCK_SIZE]; /* SHA256 data buffer */
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unsigned int index; /* index into buffer */
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};
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void
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sha256_init(struct sha256_ctx *ctx);
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void
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sha256_update(struct sha256_ctx *ctx,
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size_t length,
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const uint8_t *data);
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void
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sha256_digest(struct sha256_ctx *ctx,
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size_t length,
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uint8_t *digest);
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/* Internal compression function. STATE points to 8 uint32_t words,
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DATA points to 64 bytes of input data, possibly unaligned, and K
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points to the table of constants. */
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void
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_nettle_sha256_compress(uint32_t *state, const uint8_t *data, const uint32_t *k);
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/* SHA224, a truncated SHA256 with different initial state. */
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#define SHA224_DIGEST_SIZE 28
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#define SHA224_BLOCK_SIZE SHA256_BLOCK_SIZE
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#define sha224_ctx sha256_ctx
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void
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sha224_init(struct sha256_ctx *ctx);
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#define sha224_update nettle_sha256_update
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void
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sha224_digest(struct sha256_ctx *ctx,
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size_t length,
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uint8_t *digest);
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/* SHA512 */
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#define SHA512_DIGEST_SIZE 64
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#define SHA512_BLOCK_SIZE 128
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/* Digest is kept internally as 8 64-bit words. */
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#define _SHA512_DIGEST_LENGTH 8
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struct sha512_ctx
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{
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uint64_t state[_SHA512_DIGEST_LENGTH]; /* State variables */
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uint64_t count_low, count_high; /* 128-bit block count */
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uint8_t block[SHA512_BLOCK_SIZE]; /* SHA512 data buffer */
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unsigned int index; /* index into buffer */
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};
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void
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sha512_init(struct sha512_ctx *ctx);
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void
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sha512_update(struct sha512_ctx *ctx,
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size_t length,
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const uint8_t *data);
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void
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sha512_digest(struct sha512_ctx *ctx,
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size_t length,
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uint8_t *digest);
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/* Internal compression function. STATE points to 8 uint64_t words,
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DATA points to 128 bytes of input data, possibly unaligned, and K
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points to the table of constants. */
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void
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_nettle_sha512_compress(uint64_t *state, const uint8_t *data, const uint64_t *k);
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/* SHA384, a truncated SHA512 with different initial state. */
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#define SHA384_DIGEST_SIZE 48
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#define SHA384_BLOCK_SIZE SHA512_BLOCK_SIZE
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#define sha384_ctx sha512_ctx
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void
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sha384_init(struct sha512_ctx *ctx);
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#define sha384_update nettle_sha512_update
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void
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sha384_digest(struct sha512_ctx *ctx,
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size_t length,
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uint8_t *digest);
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/* SHA512_224 and SHA512_256, two truncated versions of SHA512
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with different initial states. */
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#define SHA512_224_DIGEST_SIZE 28
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#define SHA512_224_BLOCK_SIZE SHA512_BLOCK_SIZE
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#define sha512_224_ctx sha512_ctx
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void
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sha512_224_init(struct sha512_224_ctx *ctx);
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#define sha512_224_update nettle_sha512_update
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void
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sha512_224_digest(struct sha512_224_ctx *ctx,
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size_t length,
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uint8_t *digest);
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#define SHA512_256_DIGEST_SIZE 32
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#define SHA512_256_BLOCK_SIZE SHA512_BLOCK_SIZE
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#define sha512_256_ctx sha512_ctx
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void
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sha512_256_init(struct sha512_256_ctx *ctx);
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#define sha512_256_update nettle_sha512_update
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void
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sha512_256_digest(struct sha512_256_ctx *ctx,
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size_t length,
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uint8_t *digest);
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#ifdef __cplusplus
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}
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#endif
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#endif /* NETTLE_SHA2_H_INCLUDED */
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