From 7c3fd5c25dd005c5eef54cc629fcbfcf48a04e9a Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Mon, 27 Dec 2021 14:12:07 +0800 Subject: lib: add BLAKE2 hash support 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 [trini: Rename ROUND to R to avoid clash with Signed-off-by: Tom Rini --- include/u-boot/blake2.h | 94 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 include/u-boot/blake2.h (limited to 'include/u-boot/blake2.h') diff --git a/include/u-boot/blake2.h b/include/u-boot/blake2.h new file mode 100644 index 0000000000..4984023a1a --- /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 . 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 +#include + +#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 -- cgit v1.2.1