450 lines
13 KiB
C++
Executable file
450 lines
13 KiB
C++
Executable file
/*
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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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#include "stdafx.h"
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#include <stdint.h>
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#include <string.h>
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#include <stdio.h>
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#include <assert.h>
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#include "tunsafe_types.h"
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#include "blake2s.h"
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#include "crypto_ops.h"
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#ifndef BLAKE2S_WITH_ASM
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#define BLAKE2S_WITH_ASM 1
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#endif // BLAKE2S_WITH_ASM
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void blake2s_compress_sse(blake2s_state *S, const uint8_t block[BLAKE2S_BLOCKBYTES]);
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#if !defined(__cplusplus) && (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L)
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#if defined(_MSC_VER)
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#define BLAKE2_INLINE __inline
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#elif defined(__GNUC__)
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#define BLAKE2_INLINE __inline__
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#else
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#define BLAKE2_INLINE
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#endif
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#else
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#define BLAKE2_INLINE inline
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#endif
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static BLAKE2_INLINE uint32_t load32(const void *src) {
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#if defined(ARCH_CPU_LITTLE_ENDIAN)
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uint32_t w;
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memcpy(&w, src, sizeof w);
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return w;
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#else
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const uint8_t *p = (const uint8_t *)src;
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return ((uint32_t)(p[0]) << 0) |
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((uint32_t)(p[1]) << 8) |
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((uint32_t)(p[2]) << 16) |
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((uint32_t)(p[3]) << 24);
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#endif
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}
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static BLAKE2_INLINE uint16_t load16(const void *src) {
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#if defined(ARCH_CPU_LITTLE_ENDIAN)
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uint16_t w;
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memcpy(&w, src, sizeof w);
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return w;
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#else
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const uint8_t *p = (const uint8_t *)src;
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return ((uint16_t)(p[0]) << 0) |
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((uint16_t)(p[1]) << 8);
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#endif
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}
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static BLAKE2_INLINE void store16(void *dst, uint16_t w) {
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#if defined(ARCH_CPU_LITTLE_ENDIAN)
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memcpy(dst, &w, sizeof w);
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#else
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uint8_t *p = (uint8_t *)dst;
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*p++ = (uint8_t)w; w >>= 8;
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*p++ = (uint8_t)w;
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#endif
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}
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static BLAKE2_INLINE void store32(void *dst, uint32_t w) {
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#if defined(ARCH_CPU_LITTLE_ENDIAN)
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memcpy(dst, &w, sizeof w);
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#else
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uint8_t *p = (uint8_t *)dst;
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p[0] = (uint8_t)(w >> 0);
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p[1] = (uint8_t)(w >> 8);
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p[2] = (uint8_t)(w >> 16);
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p[3] = (uint8_t)(w >> 24);
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#endif
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}
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static BLAKE2_INLINE uint32_t rotr32(const uint32_t w, const unsigned c) {
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return (w >> c) | (w << (32 - c));
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}
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static BLAKE2_INLINE uint64_t rotr64(const uint64_t w, const unsigned c) {
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return (w >> c) | (w << (64 - c));
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}
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static const uint32_t blake2s_IV[8] = {
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0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
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0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
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};
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static const uint8_t blake2s_sigma[10][16] =
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{
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{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} ,
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{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3} ,
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{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4} ,
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{7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8} ,
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{9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13} ,
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{2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9} ,
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{12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11} ,
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{13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10} ,
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{6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5} ,
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{10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0} ,
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};
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static void blake2s_set_lastnode(blake2s_state *S) {
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S->f[1] = (uint32_t)-1;
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}
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/* Some helper functions, not necessarily useful */
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static int blake2s_is_lastblock(const blake2s_state *S) {
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return S->f[0] != 0;
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}
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static void blake2s_set_lastblock(blake2s_state *S) {
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if (S->last_node) blake2s_set_lastnode(S);
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S->f[0] = (uint32_t)-1;
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}
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static void blake2s_increment_counter(blake2s_state *S, const uint32_t inc) {
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S->t[0] += inc;
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S->t[1] += (S->t[0] < inc);
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}
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void blake2s_init_with_len(blake2s_state *S, size_t outlen, size_t keylen) {
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memset(S, 0, sizeof(blake2s_state));
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blake2s_param *P = &S->param;
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size_t i;
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/* Move interval verification here? */
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assert(outlen && outlen <= BLAKE2S_OUTBYTES);
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P->digest_length = (uint8_t)outlen;
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S->outlen = (uint8_t)outlen;
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P->key_length = (uint8_t)keylen;
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P->fanout = 1;
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P->depth = 1;
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// store32(&P.leaf_length, 0);
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// store32(&P.node_offset, 0);
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// store16(&P.xof_length, 0);
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// P.node_depth = 0;
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// P.inner_length = 0;
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/* memset(P->reserved, 0, sizeof(P->reserved) ); */
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// memset(P.salt, 0, sizeof(P.salt));
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// memset(P.personal, 0, sizeof(P.personal));
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for (i = 0; i < 8; ++i)
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S->h[i] = load32(&S->h[i]) ^ blake2s_IV[i];
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}
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/* Sequential blake2s initialization */
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void blake2s_init(blake2s_state *S, size_t outlen) {
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blake2s_init_with_len(S, outlen, 0);
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}
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void blake2s_init_key(blake2s_state *S, size_t outlen, const void *key, size_t keylen) {
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uint8_t block[BLAKE2S_BLOCKBYTES];
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assert(outlen && outlen <= BLAKE2S_OUTBYTES);
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assert(key && keylen && keylen <= BLAKE2S_KEYBYTES);
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blake2s_init_with_len(S, outlen, keylen);
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memset(block, 0, BLAKE2S_BLOCKBYTES);
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memcpy(block, key, keylen);
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blake2s_update(S, block, BLAKE2S_BLOCKBYTES);
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memzero_crypto(block, BLAKE2S_BLOCKBYTES); /* Burn the key from stack */
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}
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#define G(r,i,a,b,c,d) \
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do { \
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a = a + b + m[blake2s_sigma[r][2*i+0]]; \
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d = rotr32(d ^ a, 16); \
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c = c + d; \
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b = rotr32(b ^ c, 12); \
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a = a + b + m[blake2s_sigma[r][2*i+1]]; \
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d = rotr32(d ^ a, 8); \
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c = c + d; \
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b = rotr32(b ^ c, 7); \
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} while(0)
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#define ROUND(r) \
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do { \
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G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
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G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
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G(r,2,v[ 2],v[ 6],v[10],v[14]); \
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G(r,3,v[ 3],v[ 7],v[11],v[15]); \
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G(r,4,v[ 0],v[ 5],v[10],v[15]); \
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G(r,5,v[ 1],v[ 6],v[11],v[12]); \
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G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
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G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
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} while(0)
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static void blake2s_compress(blake2s_state *S, const uint8_t in[BLAKE2S_BLOCKBYTES]) {
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uint32_t m[16];
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uint32_t v[16];
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size_t i;
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for (i = 0; i < 16; ++i) {
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m[i] = load32(in + i * sizeof(m[i]));
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}
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for (i = 0; i < 8; ++i) {
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v[i] = S->h[i];
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}
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v[8] = blake2s_IV[0];
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v[9] = blake2s_IV[1];
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v[10] = blake2s_IV[2];
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v[11] = blake2s_IV[3];
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v[12] = S->t[0] ^ blake2s_IV[4];
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v[13] = S->t[1] ^ blake2s_IV[5];
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v[14] = S->f[0] ^ blake2s_IV[6];
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v[15] = S->f[1] ^ blake2s_IV[7];
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ROUND(0);
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ROUND(1);
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ROUND(2);
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ROUND(3);
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ROUND(4);
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ROUND(5);
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ROUND(6);
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ROUND(7);
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ROUND(8);
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ROUND(9);
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for (i = 0; i < 8; ++i) {
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S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
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}
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}
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#undef G
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#undef ROUND
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static inline void blake2s_compress_impl(blake2s_state *S, const uint8_t block[BLAKE2S_BLOCKBYTES]) {
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#if defined(ARCH_CPU_X86_64) && BLAKE2S_WITH_ASM
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blake2s_compress_sse(S, block);
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#else
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blake2s_compress(S, block);
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#endif
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}
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void blake2s_update(blake2s_state *S, const void *pin, size_t inlen) {
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const unsigned char * in = (const unsigned char *)pin;
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if (inlen > 0) {
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size_t left = S->buflen;
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size_t fill = BLAKE2S_BLOCKBYTES - left;
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if (inlen > fill) {
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S->buflen = 0;
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memcpy(S->buf + left, in, fill); /* Fill buffer */
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blake2s_increment_counter(S, BLAKE2S_BLOCKBYTES);
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blake2s_compress_impl(S, S->buf); /* Compress */
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in += fill; inlen -= fill;
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while (inlen > BLAKE2S_BLOCKBYTES) {
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blake2s_increment_counter(S, BLAKE2S_BLOCKBYTES);
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blake2s_compress_impl(S, in);
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in += BLAKE2S_BLOCKBYTES;
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inlen -= BLAKE2S_BLOCKBYTES;
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}
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}
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memcpy(S->buf + S->buflen, in, inlen);
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S->buflen += inlen;
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}
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}
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void blake2s_final(blake2s_state *S, void *out, size_t outlen) {
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size_t i;
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assert(out != NULL && outlen >= S->outlen);
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assert(!blake2s_is_lastblock(S));
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blake2s_increment_counter(S, (uint32_t)S->buflen);
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blake2s_set_lastblock(S);
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memset(S->buf + S->buflen, 0, BLAKE2S_BLOCKBYTES - S->buflen); /* Padding */
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blake2s_compress_impl(S, S->buf);
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for (i = 0; i < 8; ++i) /* Output full hash to temp buffer */
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store32(&S->h[i], S->h[i]);
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memcpy(out, S->h, outlen);
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}
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SAFEBUFFERS void blake2s(void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen) {
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blake2s_state S;
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/* Verify parameters */
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assert(!((NULL == in && inlen > 0)));
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assert(out);
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assert(!(NULL == key && keylen > 0));
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assert(!(!outlen || outlen > BLAKE2S_OUTBYTES));
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assert(!(keylen > BLAKE2S_KEYBYTES));
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if (keylen > 0) {
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blake2s_init_key(&S, outlen, key, keylen);
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} else {
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blake2s_init(&S, outlen);
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}
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blake2s_update(&S, (const uint8_t *)in, inlen);
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blake2s_final(&S, out, outlen);
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}
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SAFEBUFFERS void blake2s_hmac(uint8_t *out, size_t outlen, const uint8_t *in, size_t inlen, const uint8_t *key, size_t keylen) {
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blake2s_state b2s;
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uint64_t temp[BLAKE2S_OUTBYTES / 8];
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uint64_t key_temp[BLAKE2S_BLOCKBYTES / 8] = { 0 };
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if (keylen > BLAKE2S_BLOCKBYTES) {
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blake2s_init(&b2s, BLAKE2S_OUTBYTES);
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blake2s_update(&b2s, key, keylen);
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blake2s_final(&b2s, key_temp, BLAKE2S_OUTBYTES);
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} else {
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memcpy(key_temp, key, keylen);
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}
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for (size_t i = 0; i < BLAKE2S_BLOCKBYTES / 8; i++)
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key_temp[i] ^= 0x3636363636363636ull;
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blake2s_init(&b2s, BLAKE2S_OUTBYTES);
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blake2s_update(&b2s, key_temp, BLAKE2S_BLOCKBYTES);
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blake2s_update(&b2s, in, inlen);
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blake2s_final(&b2s, temp, BLAKE2S_OUTBYTES);
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for (size_t i = 0; i < BLAKE2S_BLOCKBYTES / 8; i++)
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key_temp[i] ^= 0x5c5c5c5c5c5c5c5cull ^ 0x3636363636363636ull;
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blake2s_init(&b2s, BLAKE2S_OUTBYTES);
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blake2s_update(&b2s, key_temp, BLAKE2S_BLOCKBYTES);
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blake2s_update(&b2s, temp, BLAKE2S_OUTBYTES);
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blake2s_final(&b2s, temp, BLAKE2S_OUTBYTES);
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memcpy(out, temp, outlen);
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memzero_crypto(key_temp, sizeof(key_temp));
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memzero_crypto(temp, sizeof(temp));
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}
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SAFEBUFFERS
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void blake2s_hkdf(uint8 *dst1, size_t dst1_size,
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uint8 *dst2, size_t dst2_size,
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uint8 *dst3, size_t dst3_size,
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const uint8 *data, size_t data_size,
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const uint8 *key, size_t key_size) {
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struct {
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uint8 prk[BLAKE2S_OUTBYTES];
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uint8 temp[BLAKE2S_OUTBYTES + 1];
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} t;
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blake2s_hmac(t.prk, BLAKE2S_OUTBYTES, data, data_size, key, key_size);
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// first-key = HMAC(secret, 0x1)
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t.temp[0] = 0x1;
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blake2s_hmac(t.temp, BLAKE2S_OUTBYTES, t.temp, 1, t.prk, BLAKE2S_OUTBYTES);
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memcpy(dst1, t.temp, dst1_size);
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if (dst2 != NULL) {
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// second-key = HMAC(secret, first-key || 0x2)
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t.temp[BLAKE2S_OUTBYTES] = 0x2;
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blake2s_hmac(t.temp, BLAKE2S_OUTBYTES, t.temp, BLAKE2S_OUTBYTES + 1, t.prk, BLAKE2S_OUTBYTES);
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memcpy(dst2, t.temp, dst2_size);
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if (dst3 != NULL) {
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// third-key = HMAC(secret, second-key || 0x3)
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t.temp[BLAKE2S_OUTBYTES] = 0x3;
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blake2s_hmac(t.temp, BLAKE2S_OUTBYTES, t.temp, BLAKE2S_OUTBYTES + 1, t.prk, BLAKE2S_OUTBYTES);
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memcpy(dst3, t.temp, dst3_size);
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}
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}
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memzero_crypto(&t, sizeof(t));
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}
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#if defined(SUPERCOP)
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int crypto_hash(unsigned char *out, unsigned char *in, unsigned long long inlen) {
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return blake2s(out, BLAKE2S_OUTBYTES in, inlen, NULL, 0);
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}
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#endif
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#if defined(BLAKE2S_SELFTEST)
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#include <string.h>
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#include "blake2-kat.h"
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int main(void) {
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uint8_t key[BLAKE2S_KEYBYTES];
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uint8_t buf[BLAKE2_KAT_LENGTH];
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size_t i, step;
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for (i = 0; i < BLAKE2S_KEYBYTES; ++i)
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key[i] = (uint8_t)i;
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for (i = 0; i < BLAKE2_KAT_LENGTH; ++i)
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buf[i] = (uint8_t)i;
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/* Test simple API */
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for (i = 0; i < BLAKE2_KAT_LENGTH; ++i) {
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uint8_t hash[BLAKE2S_OUTBYTES];
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blake2s(hash, BLAKE2S_OUTBYTES, buf, i, key, BLAKE2S_KEYBYTES);
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if (0 != memcmp(hash, blake2s_keyed_kat[i], BLAKE2S_OUTBYTES)) {
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goto fail;
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}
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}
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/* Test streaming API */
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for (step = 1; step < BLAKE2S_BLOCKBYTES; ++step) {
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for (i = 0; i < BLAKE2_KAT_LENGTH; ++i) {
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uint8_t hash[BLAKE2S_OUTBYTES];
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blake2s_state S;
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uint8_t * p = buf;
|
|
size_t mlen = i;
|
|
int err = 0;
|
|
|
|
if ((err = blake2s_init_key(&S, BLAKE2S_OUTBYTES, key, BLAKE2S_KEYBYTES)) < 0) {
|
|
goto fail;
|
|
}
|
|
|
|
while (mlen >= step) {
|
|
if ((err = blake2s_update(&S, p, step)) < 0) {
|
|
goto fail;
|
|
}
|
|
mlen -= step;
|
|
p += step;
|
|
}
|
|
if ((err = blake2s_update(&S, p, mlen)) < 0) {
|
|
goto fail;
|
|
}
|
|
if ((err = blake2s_final(&S, hash, BLAKE2S_OUTBYTES)) < 0) {
|
|
goto fail;
|
|
}
|
|
|
|
if (0 != memcmp(hash, blake2s_keyed_kat[i], BLAKE2S_OUTBYTES)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
|
|
puts("ok");
|
|
return 0;
|
|
fail:
|
|
puts("error");
|
|
return -1;
|
|
}
|
|
#endif
|