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Eric Biggers
8d3b664949
Add BLAKE2s support to the perf utility library. The code is borrowed from the kernel. This will replace the use of SHA-1 in genelf.c. Signed-off-by: Eric Biggers <ebiggers@kernel.org> Tested-by: Ian Rogers <irogers@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Fangrui Song <maskray@sourceware.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jason A. Donenfeld <Jason@zx2c4.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Pablo Galindo <pablogsal@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/*
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* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#ifndef _CRYPTO_BLAKE2S_H
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#define _CRYPTO_BLAKE2S_H
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#include <string.h>
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#include <linux/types.h>
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#define BLAKE2S_BLOCK_SIZE 64
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struct blake2s_ctx {
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u32 h[8];
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u32 t[2];
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u32 f[2];
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u8 buf[BLAKE2S_BLOCK_SIZE];
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unsigned int buflen;
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unsigned int outlen;
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};
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enum blake2s_iv {
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BLAKE2S_IV0 = 0x6A09E667UL,
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BLAKE2S_IV1 = 0xBB67AE85UL,
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BLAKE2S_IV2 = 0x3C6EF372UL,
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BLAKE2S_IV3 = 0xA54FF53AUL,
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BLAKE2S_IV4 = 0x510E527FUL,
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BLAKE2S_IV5 = 0x9B05688CUL,
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BLAKE2S_IV6 = 0x1F83D9ABUL,
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BLAKE2S_IV7 = 0x5BE0CD19UL,
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};
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static inline void __blake2s_init(struct blake2s_ctx *ctx, size_t outlen,
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const void *key, size_t keylen)
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{
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ctx->h[0] = BLAKE2S_IV0 ^ (0x01010000 | keylen << 8 | outlen);
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ctx->h[1] = BLAKE2S_IV1;
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ctx->h[2] = BLAKE2S_IV2;
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ctx->h[3] = BLAKE2S_IV3;
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ctx->h[4] = BLAKE2S_IV4;
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ctx->h[5] = BLAKE2S_IV5;
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ctx->h[6] = BLAKE2S_IV6;
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ctx->h[7] = BLAKE2S_IV7;
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ctx->t[0] = 0;
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ctx->t[1] = 0;
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ctx->f[0] = 0;
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ctx->f[1] = 0;
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ctx->buflen = 0;
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ctx->outlen = outlen;
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if (keylen) {
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memcpy(ctx->buf, key, keylen);
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memset(&ctx->buf[keylen], 0, BLAKE2S_BLOCK_SIZE - keylen);
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ctx->buflen = BLAKE2S_BLOCK_SIZE;
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}
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}
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static inline void blake2s_init(struct blake2s_ctx *ctx, size_t outlen)
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{
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__blake2s_init(ctx, outlen, NULL, 0);
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}
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static inline void blake2s_init_key(struct blake2s_ctx *ctx, size_t outlen,
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const void *key, size_t keylen)
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{
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__blake2s_init(ctx, outlen, key, keylen);
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}
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void blake2s_update(struct blake2s_ctx *ctx, const u8 *in, size_t inlen);
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void blake2s_final(struct blake2s_ctx *ctx, u8 *out);
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#endif /* _CRYPTO_BLAKE2S_H */
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