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The code is cross-ported from BLAKE2 reference implementation (https://github.com/BLAKE2/BLAKE2). With minimal change to remove unused macros/features. Currently there is only one user inside U-boot (btrfs), and since it only utilize BLAKE2B, all other favors are all removed. Signed-off-by: Qu Wenruo <wqu@suse.com> [trini: Rename ROUND to R to avoid clash with <linux/bitops.h> Signed-off-by: Tom Rini <trini@konsulko.com>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* SPDX-License-Identifier: CC0-1.0 */
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/*
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BLAKE2 reference source code package - reference C implementations
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Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
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terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
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your option. The terms of these licenses can be found at:
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- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
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- OpenSSL license : https://www.openssl.org/source/license.html
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- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
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More information about the BLAKE2 hash function can be found at
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https://blake2.net.
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*/
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/*
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* Cross-ported from BLAKE2 (https://github.com/BLAKE2/BLAKE2).
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* Modifications includes:
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*
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* - Remove unsupported compilers like MSC/CPP
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* - Remove blake2s/blake2sp/blake2bp
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* This blake2 implementation is mostly for btrfs, which only utilizes
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* blake2b.
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*/
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#ifndef BLAKE2_H
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#define BLAKE2_H
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#include <stddef.h>
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#include <stdint.h>
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#if defined(_MSC_VER)
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#define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop))
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#else
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#define BLAKE2_PACKED(x) x __attribute__((packed))
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#endif
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enum blake2b_constant
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{
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BLAKE2B_BLOCKBYTES = 128,
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BLAKE2B_OUTBYTES = 64,
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BLAKE2B_KEYBYTES = 64,
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BLAKE2B_SALTBYTES = 16,
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BLAKE2B_PERSONALBYTES = 16
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};
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typedef struct blake2b_state__
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{
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uint64_t h[8];
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uint64_t t[2];
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uint64_t f[2];
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uint8_t buf[BLAKE2B_BLOCKBYTES];
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size_t buflen;
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size_t outlen;
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uint8_t last_node;
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} blake2b_state;
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BLAKE2_PACKED(struct blake2b_param__
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{
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uint8_t digest_length; /* 1 */
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uint8_t key_length; /* 2 */
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uint8_t fanout; /* 3 */
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uint8_t depth; /* 4 */
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uint32_t leaf_length; /* 8 */
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uint32_t node_offset; /* 12 */
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uint32_t xof_length; /* 16 */
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uint8_t node_depth; /* 17 */
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uint8_t inner_length; /* 18 */
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uint8_t reserved[14]; /* 32 */
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uint8_t salt[BLAKE2B_SALTBYTES]; /* 48 */
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uint8_t personal[BLAKE2B_PERSONALBYTES]; /* 64 */
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});
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typedef struct blake2b_param__ blake2b_param;
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/* Padded structs result in a compile-time error */
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enum {
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BLAKE2_DUMMY_2 = 1/(int)(sizeof(blake2b_param) == BLAKE2B_OUTBYTES)
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};
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/* Streaming API */
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int blake2b_init( blake2b_state *S, size_t outlen );
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int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen );
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int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
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int blake2b_update( blake2b_state *S, const void *in, size_t inlen );
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int blake2b_final( blake2b_state *S, void *out, size_t outlen );
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/* Simple API */
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int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
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/* This is simply an alias for blake2b */
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int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
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#endif
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