From 6adc0e6c6c378b5438533bdf55636ef049c1b956 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 7 Jan 2022 19:52:35 +0100 Subject: Add BLAKE2b and BLAKE2s + add salt support to BLAKE + m MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libblake_blake2s_digest.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 libblake_blake2s_digest.c (limited to 'libblake_blake2s_digest.c') diff --git a/libblake_blake2s_digest.c b/libblake_blake2s_digest.c new file mode 100644 index 0000000..d9106a5 --- /dev/null +++ b/libblake_blake2s_digest.c @@ -0,0 +1,47 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + +static void +encode_uint32_le(unsigned char *out, uint_least32_t value, size_t bytes) +{ + switch (bytes) { + default: + out[3] = (unsigned char)((value >> 24) & 255); + /* fall through */ + case 3: + out[2] = (unsigned char)((value >> 16) & 255); + /* fall through */ + case 2: + out[1] = (unsigned char)((value >> 8) & 255); + /* fall through */ + case 1: + out[0] = (unsigned char)((value >> 0) & 255); + /* fall through */ + case 0: + break; + } +} + +void +libblake_blake2s_digest(struct libblake_blake2s_state *state, void *data_, size_t len, + size_t output_len, unsigned char output[static output_len]) +{ + unsigned char *data = data_; + size_t r, i, j; + + r = libblake_blake2s_update(state, data, len); + data = &data[r]; + len -= r; + + state->f[0] = UINT_LEAST32_C(0xFFFFffff); + memset(&data[len], 0, 64 - len); + + state->t[0] = (state->t[0] + len) & UINT_LEAST32_C(0xFFFFffff); + if (state->t[0] < len) + state->t[1] = (state->t[1] + 1) & UINT_LEAST32_C(0xFFFFffff); + + libblake_internal_blake2s_compress(state, data); + + for (i = 0, j = 0; i < output_len; i += 4, j += 1) + encode_uint32_le(&output[i], state->h[j], output_len - i); +} -- cgit v1.2.3-70-g09d2