[PATCH 1/2] lib: add BLAKE2 hash support
Qu Wenruo
wqu at suse.com
Mon Dec 27 07:12:07 CET 2021
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 at suse.com>
---
include/u-boot/blake2.h | 94 ++++++++++++
lib/Kconfig | 8 +
lib/Makefile | 1 +
lib/blake2/blake2-impl.h | 163 ++++++++++++++++++++
lib/blake2/blake2b.c | 311 +++++++++++++++++++++++++++++++++++++++
5 files changed, 577 insertions(+)
create mode 100644 include/u-boot/blake2.h
create mode 100644 lib/blake2/blake2-impl.h
create mode 100644 lib/blake2/blake2b.c
diff --git a/include/u-boot/blake2.h b/include/u-boot/blake2.h
new file mode 100644
index 000000000000..4984023a1a2d
--- /dev/null
+++ b/include/u-boot/blake2.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+/*
+ BLAKE2 reference source code package - reference C implementations
+
+ Copyright 2012, Samuel Neves <sneves at dei.uc.pt>. You may use this under the
+ terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
+ your option. The terms of these licenses can be found at:
+
+ - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+ - OpenSSL license : https://www.openssl.org/source/license.html
+ - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
+
+ More information about the BLAKE2 hash function can be found at
+ https://blake2.net.
+*/
+
+/*
+ * Cross-ported from BLAKE2 (https://github.com/BLAKE2/BLAKE2).
+ * Modifications includes:
+ *
+ * - Remove unsupported compilers like MSC/CPP
+ * - Remove blake2s/blake2sp/blake2bp
+ * This blake2 implementation is mostly for btrfs, which only utilizes
+ * blake2b.
+ */
+#ifndef BLAKE2_H
+#define BLAKE2_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#if defined(_MSC_VER)
+#define BLAKE2_PACKED(x) __pragma(pack(push, 1)) x __pragma(pack(pop))
+#else
+#define BLAKE2_PACKED(x) x __attribute__((packed))
+#endif
+
+ enum blake2b_constant
+ {
+ BLAKE2B_BLOCKBYTES = 128,
+ BLAKE2B_OUTBYTES = 64,
+ BLAKE2B_KEYBYTES = 64,
+ BLAKE2B_SALTBYTES = 16,
+ BLAKE2B_PERSONALBYTES = 16
+ };
+
+ typedef struct blake2b_state__
+ {
+ uint64_t h[8];
+ uint64_t t[2];
+ uint64_t f[2];
+ uint8_t buf[BLAKE2B_BLOCKBYTES];
+ size_t buflen;
+ size_t outlen;
+ uint8_t last_node;
+ } blake2b_state;
+
+ BLAKE2_PACKED(struct blake2b_param__
+ {
+ uint8_t digest_length; /* 1 */
+ uint8_t key_length; /* 2 */
+ uint8_t fanout; /* 3 */
+ uint8_t depth; /* 4 */
+ uint32_t leaf_length; /* 8 */
+ uint32_t node_offset; /* 12 */
+ uint32_t xof_length; /* 16 */
+ uint8_t node_depth; /* 17 */
+ uint8_t inner_length; /* 18 */
+ uint8_t reserved[14]; /* 32 */
+ uint8_t salt[BLAKE2B_SALTBYTES]; /* 48 */
+ uint8_t personal[BLAKE2B_PERSONALBYTES]; /* 64 */
+ });
+
+ typedef struct blake2b_param__ blake2b_param;
+
+ /* Padded structs result in a compile-time error */
+ enum {
+ BLAKE2_DUMMY_2 = 1/(int)(sizeof(blake2b_param) == BLAKE2B_OUTBYTES)
+ };
+
+ /* Streaming API */
+ int blake2b_init( blake2b_state *S, size_t outlen );
+ int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen );
+ int blake2b_init_param( blake2b_state *S, const blake2b_param *P );
+ int blake2b_update( blake2b_state *S, const void *in, size_t inlen );
+ int blake2b_final( blake2b_state *S, void *out, size_t outlen );
+
+ /* Simple API */
+ int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
+
+ /* This is simply an alias for blake2b */
+ int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen );
+
+#endif
diff --git a/lib/Kconfig b/lib/Kconfig
index 807a4c6ade06..e9976c7425e2 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -357,6 +357,14 @@ endmenu
menu "Hashing Support"
+config BLAKE2
+ bool "Enable BLAKE2 support"
+ help
+ This option enables support of hashing using BLAKE2B algorithm.
+ The hash is calculated in software.
+ The BLAKE2 algorithm produces a hash value (digest) between 1 and
+ 64 bytes.
+
config SHA1
bool "Enable SHA1 support"
help
diff --git a/lib/Makefile b/lib/Makefile
index 5ddbc77ed6d8..7950e847a9e2 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_$(SPL_)MD5) += md5.o
obj-$(CONFIG_ECDSA) += ecdsa/
obj-$(CONFIG_$(SPL_)RSA) += rsa/
obj-$(CONFIG_HASH) += hash-checksum.o
+obj-$(CONFIG_BLAKE2) += blake2/blake2b.o
obj-$(CONFIG_SHA1) += sha1.o
obj-$(CONFIG_SHA256) += sha256.o
obj-$(CONFIG_SHA512) += sha512.o
diff --git a/lib/blake2/blake2-impl.h b/lib/blake2/blake2-impl.h
new file mode 100644
index 000000000000..7ee52fdf5ada
--- /dev/null
+++ b/lib/blake2/blake2-impl.h
@@ -0,0 +1,163 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+/*
+ BLAKE2 reference source code package - reference C implementations
+
+ Copyright 2012, Samuel Neves <sneves at dei.uc.pt>. You may use this under the
+ terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
+ your option. The terms of these licenses can be found at:
+
+ - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+ - OpenSSL license : https://www.openssl.org/source/license.html
+ - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
+
+ More information about the BLAKE2 hash function can be found at
+ https://blake2.net.
+*/
+
+/*
+ * Cross-ported from BLAKE2 (https://github.com/BLAKE2/BLAKE2).
+ * Modifications includes:
+ *
+ * - Remove unsupported compilers like MSC/CPP
+ * - Use u-boot library functions/macros
+ */
+#ifndef BLAKE2_IMPL_H
+#define BLAKE2_IMPL_H
+
+#include <stdint.h>
+#include <string.h>
+
+#define BLAKE2_INLINE inline
+
+#ifdef __LITTLE_ENDIAN
+# define NATIVE_LITTLE_ENDIAN
+#endif
+
+static BLAKE2_INLINE uint32_t load32( const void *src )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+ uint32_t w;
+ memcpy(&w, src, sizeof w);
+ return w;
+#else
+ const uint8_t *p = ( const uint8_t * )src;
+ return (( uint32_t )( p[0] ) << 0) |
+ (( uint32_t )( p[1] ) << 8) |
+ (( uint32_t )( p[2] ) << 16) |
+ (( uint32_t )( p[3] ) << 24) ;
+#endif
+}
+
+static BLAKE2_INLINE uint64_t load64( const void *src )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+ uint64_t w;
+ memcpy(&w, src, sizeof w);
+ return w;
+#else
+ const uint8_t *p = ( const uint8_t * )src;
+ return (( uint64_t )( p[0] ) << 0) |
+ (( uint64_t )( p[1] ) << 8) |
+ (( uint64_t )( p[2] ) << 16) |
+ (( uint64_t )( p[3] ) << 24) |
+ (( uint64_t )( p[4] ) << 32) |
+ (( uint64_t )( p[5] ) << 40) |
+ (( uint64_t )( p[6] ) << 48) |
+ (( uint64_t )( p[7] ) << 56) ;
+#endif
+}
+
+static BLAKE2_INLINE uint16_t load16( const void *src )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+ uint16_t w;
+ memcpy(&w, src, sizeof w);
+ return w;
+#else
+ const uint8_t *p = ( const uint8_t * )src;
+ return ( uint16_t )((( uint32_t )( p[0] ) << 0) |
+ (( uint32_t )( p[1] ) << 8));
+#endif
+}
+
+static BLAKE2_INLINE void store16( void *dst, uint16_t w )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+ memcpy(dst, &w, sizeof w);
+#else
+ uint8_t *p = ( uint8_t * )dst;
+ *p++ = ( uint8_t )w; w >>= 8;
+ *p++ = ( uint8_t )w;
+#endif
+}
+
+static BLAKE2_INLINE void store32( void *dst, uint32_t w )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+ memcpy(dst, &w, sizeof w);
+#else
+ uint8_t *p = ( uint8_t * )dst;
+ p[0] = (uint8_t)(w >> 0);
+ p[1] = (uint8_t)(w >> 8);
+ p[2] = (uint8_t)(w >> 16);
+ p[3] = (uint8_t)(w >> 24);
+#endif
+}
+
+static BLAKE2_INLINE void store64( void *dst, uint64_t w )
+{
+#if defined(NATIVE_LITTLE_ENDIAN)
+ memcpy(dst, &w, sizeof w);
+#else
+ uint8_t *p = ( uint8_t * )dst;
+ p[0] = (uint8_t)(w >> 0);
+ p[1] = (uint8_t)(w >> 8);
+ p[2] = (uint8_t)(w >> 16);
+ p[3] = (uint8_t)(w >> 24);
+ p[4] = (uint8_t)(w >> 32);
+ p[5] = (uint8_t)(w >> 40);
+ p[6] = (uint8_t)(w >> 48);
+ p[7] = (uint8_t)(w >> 56);
+#endif
+}
+
+static BLAKE2_INLINE uint64_t load48( const void *src )
+{
+ const uint8_t *p = ( const uint8_t * )src;
+ return (( uint64_t )( p[0] ) << 0) |
+ (( uint64_t )( p[1] ) << 8) |
+ (( uint64_t )( p[2] ) << 16) |
+ (( uint64_t )( p[3] ) << 24) |
+ (( uint64_t )( p[4] ) << 32) |
+ (( uint64_t )( p[5] ) << 40) ;
+}
+
+static BLAKE2_INLINE void store48( void *dst, uint64_t w )
+{
+ uint8_t *p = ( uint8_t * )dst;
+ p[0] = (uint8_t)(w >> 0);
+ p[1] = (uint8_t)(w >> 8);
+ p[2] = (uint8_t)(w >> 16);
+ p[3] = (uint8_t)(w >> 24);
+ p[4] = (uint8_t)(w >> 32);
+ p[5] = (uint8_t)(w >> 40);
+}
+
+static BLAKE2_INLINE uint32_t rotr32( const uint32_t w, const unsigned c )
+{
+ return ( w >> c ) | ( w << ( 32 - c ) );
+}
+
+static BLAKE2_INLINE uint64_t rotr64( const uint64_t w, const unsigned c )
+{
+ return ( w >> c ) | ( w << ( 64 - c ) );
+}
+
+/* prevents compiler optimizing out memset() */
+static BLAKE2_INLINE void secure_zero_memory(void *v, size_t n)
+{
+ static void *(*const volatile memset_v)(void *, int, size_t) = &memset;
+ memset_v(v, 0, n);
+}
+
+#endif
diff --git a/lib/blake2/blake2b.c b/lib/blake2/blake2b.c
new file mode 100644
index 000000000000..bb1c333da226
--- /dev/null
+++ b/lib/blake2/blake2b.c
@@ -0,0 +1,311 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+/*
+ BLAKE2 reference source code package - reference C implementations
+
+ Copyright 2012, Samuel Neves <sneves at dei.uc.pt>. You may use this under the
+ terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
+ your option. The terms of these licenses can be found at:
+
+ - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+ - OpenSSL license : https://www.openssl.org/source/license.html
+ - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
+
+ More information about the BLAKE2 hash function can be found at
+ https://blake2.net.
+*/
+
+/*
+ * Cross-ported from BLAKE2 (https://github.com/BLAKE2/BLAKE2).
+ * Modifications includes:
+ *
+ * - Remove unused features like selftest
+ * - Use u-boot library functions/macros
+ */
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+#include <u-boot/blake2.h>
+#include "blake2-impl.h"
+
+static const uint64_t blake2b_IV[8] =
+{
+ 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
+ 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
+ 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
+ 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
+};
+
+static const uint8_t blake2b_sigma[12][16] =
+{
+ { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
+ { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
+ { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
+ { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
+ { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
+ { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
+ { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
+ { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
+ { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
+ { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
+ { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
+ { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
+};
+
+
+static void blake2b_set_lastnode( blake2b_state *S )
+{
+ S->f[1] = (uint64_t)-1;
+}
+
+/* Some helper functions, not necessarily useful */
+static int blake2b_is_lastblock( const blake2b_state *S )
+{
+ return S->f[0] != 0;
+}
+
+static void blake2b_set_lastblock( blake2b_state *S )
+{
+ if( S->last_node ) blake2b_set_lastnode( S );
+
+ S->f[0] = (uint64_t)-1;
+}
+
+static void blake2b_increment_counter( blake2b_state *S, const uint64_t inc )
+{
+ S->t[0] += inc;
+ S->t[1] += ( S->t[0] < inc );
+}
+
+static void blake2b_init0( blake2b_state *S )
+{
+ size_t i;
+ memset( S, 0, sizeof( blake2b_state ) );
+
+ for( i = 0; i < 8; ++i ) S->h[i] = blake2b_IV[i];
+}
+
+/* init xors IV with input parameter block */
+int blake2b_init_param( blake2b_state *S, const blake2b_param *P )
+{
+ const uint8_t *p = ( const uint8_t * )( P );
+ size_t i;
+
+ blake2b_init0( S );
+
+ /* IV XOR ParamBlock */
+ for( i = 0; i < 8; ++i )
+ S->h[i] ^= load64( p + sizeof( S->h[i] ) * i );
+
+ S->outlen = P->digest_length;
+ return 0;
+}
+
+
+
+int blake2b_init( blake2b_state *S, size_t outlen )
+{
+ blake2b_param P[1];
+
+ if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
+
+ P->digest_length = (uint8_t)outlen;
+ P->key_length = 0;
+ P->fanout = 1;
+ P->depth = 1;
+ store32( &P->leaf_length, 0 );
+ store32( &P->node_offset, 0 );
+ store32( &P->xof_length, 0 );
+ P->node_depth = 0;
+ P->inner_length = 0;
+ memset( P->reserved, 0, sizeof( P->reserved ) );
+ memset( P->salt, 0, sizeof( P->salt ) );
+ memset( P->personal, 0, sizeof( P->personal ) );
+ return blake2b_init_param( S, P );
+}
+
+
+int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen )
+{
+ blake2b_param P[1];
+
+ if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
+
+ if ( !key || !keylen || keylen > BLAKE2B_KEYBYTES ) return -1;
+
+ P->digest_length = (uint8_t)outlen;
+ P->key_length = (uint8_t)keylen;
+ P->fanout = 1;
+ P->depth = 1;
+ store32( &P->leaf_length, 0 );
+ store32( &P->node_offset, 0 );
+ store32( &P->xof_length, 0 );
+ P->node_depth = 0;
+ P->inner_length = 0;
+ memset( P->reserved, 0, sizeof( P->reserved ) );
+ memset( P->salt, 0, sizeof( P->salt ) );
+ memset( P->personal, 0, sizeof( P->personal ) );
+
+ if( blake2b_init_param( S, P ) < 0 ) return -1;
+
+ {
+ uint8_t block[BLAKE2B_BLOCKBYTES];
+ memset( block, 0, BLAKE2B_BLOCKBYTES );
+ memcpy( block, key, keylen );
+ blake2b_update( S, block, BLAKE2B_BLOCKBYTES );
+ secure_zero_memory( block, BLAKE2B_BLOCKBYTES ); /* Burn the key from stack */
+ }
+ return 0;
+}
+
+#define G(r,i,a,b,c,d) \
+ do { \
+ a = a + b + m[blake2b_sigma[r][2*i+0]]; \
+ d = rotr64(d ^ a, 32); \
+ c = c + d; \
+ b = rotr64(b ^ c, 24); \
+ a = a + b + m[blake2b_sigma[r][2*i+1]]; \
+ d = rotr64(d ^ a, 16); \
+ c = c + d; \
+ b = rotr64(b ^ c, 63); \
+ } while(0)
+
+#define ROUND(r) \
+ do { \
+ G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
+ G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
+ G(r,2,v[ 2],v[ 6],v[10],v[14]); \
+ G(r,3,v[ 3],v[ 7],v[11],v[15]); \
+ G(r,4,v[ 0],v[ 5],v[10],v[15]); \
+ G(r,5,v[ 1],v[ 6],v[11],v[12]); \
+ G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
+ G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
+ } while(0)
+
+static void blake2b_compress( blake2b_state *S, const uint8_t block[BLAKE2B_BLOCKBYTES] )
+{
+ uint64_t m[16];
+ uint64_t v[16];
+ size_t i;
+
+ for( i = 0; i < 16; ++i ) {
+ m[i] = load64( block + i * sizeof( m[i] ) );
+ }
+
+ for( i = 0; i < 8; ++i ) {
+ v[i] = S->h[i];
+ }
+
+ v[ 8] = blake2b_IV[0];
+ v[ 9] = blake2b_IV[1];
+ v[10] = blake2b_IV[2];
+ v[11] = blake2b_IV[3];
+ v[12] = blake2b_IV[4] ^ S->t[0];
+ v[13] = blake2b_IV[5] ^ S->t[1];
+ v[14] = blake2b_IV[6] ^ S->f[0];
+ v[15] = blake2b_IV[7] ^ S->f[1];
+
+ ROUND( 0 );
+ ROUND( 1 );
+ ROUND( 2 );
+ ROUND( 3 );
+ ROUND( 4 );
+ ROUND( 5 );
+ ROUND( 6 );
+ ROUND( 7 );
+ ROUND( 8 );
+ ROUND( 9 );
+ ROUND( 10 );
+ ROUND( 11 );
+
+ for( i = 0; i < 8; ++i ) {
+ S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
+ }
+}
+
+#undef G
+#undef ROUND
+
+int blake2b_update( blake2b_state *S, const void *pin, size_t inlen )
+{
+ const unsigned char * in = (const unsigned char *)pin;
+ if( inlen > 0 )
+ {
+ size_t left = S->buflen;
+ size_t fill = BLAKE2B_BLOCKBYTES - left;
+ if( inlen > fill )
+ {
+ S->buflen = 0;
+ memcpy( S->buf + left, in, fill ); /* Fill buffer */
+ blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
+ blake2b_compress( S, S->buf ); /* Compress */
+ in += fill; inlen -= fill;
+ while(inlen > BLAKE2B_BLOCKBYTES) {
+ blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
+ blake2b_compress( S, in );
+ in += BLAKE2B_BLOCKBYTES;
+ inlen -= BLAKE2B_BLOCKBYTES;
+ }
+ }
+ memcpy( S->buf + S->buflen, in, inlen );
+ S->buflen += inlen;
+ }
+ return 0;
+}
+
+int blake2b_final( blake2b_state *S, void *out, size_t outlen )
+{
+ uint8_t buffer[BLAKE2B_OUTBYTES] = {0};
+ size_t i;
+
+ if( out == NULL || outlen < S->outlen )
+ return -1;
+
+ if( blake2b_is_lastblock( S ) )
+ return -1;
+
+ blake2b_increment_counter( S, S->buflen );
+ blake2b_set_lastblock( S );
+ memset( S->buf + S->buflen, 0, BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
+ blake2b_compress( S, S->buf );
+
+ for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
+ store64( buffer + sizeof( S->h[i] ) * i, S->h[i] );
+
+ memcpy( out, buffer, S->outlen );
+ secure_zero_memory(buffer, sizeof(buffer));
+ return 0;
+}
+
+/* inlen, at least, should be uint64_t. Others can be size_t. */
+int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen )
+{
+ blake2b_state S[1];
+
+ /* Verify parameters */
+ if ( NULL == in && inlen > 0 ) return -1;
+
+ if ( NULL == out ) return -1;
+
+ if( NULL == key && keylen > 0 ) return -1;
+
+ if( !outlen || outlen > BLAKE2B_OUTBYTES ) return -1;
+
+ if( keylen > BLAKE2B_KEYBYTES ) return -1;
+
+ if( keylen > 0 )
+ {
+ if( blake2b_init_key( S, outlen, key, keylen ) < 0 ) return -1;
+ }
+ else
+ {
+ if( blake2b_init( S, outlen ) < 0 ) return -1;
+ }
+
+ blake2b_update( S, ( const uint8_t * )in, inlen );
+ blake2b_final( S, out, outlen );
+ return 0;
+}
+
+int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ) {
+ return blake2b(out, outlen, in, inlen, key, keylen);
+}
--
2.34.1
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