diff options
Diffstat (limited to 'libkeccak_hmac_unmarshal.c')
| -rw-r--r-- | libkeccak_hmac_unmarshal.c | 59 | 
1 files changed, 0 insertions, 59 deletions
| diff --git a/libkeccak_hmac_unmarshal.c b/libkeccak_hmac_unmarshal.c deleted file mode 100644 index 070c7b5..0000000 --- a/libkeccak_hmac_unmarshal.c +++ /dev/null @@ -1,59 +0,0 @@ -/* See LICENSE file for copyright and license details. */ -#include "common.h" - -#if defined(__clang__) -# pragma clang diagnostic ignored "-Wcast-align" -#endif - - -/** - * Unmarshal a `struct libkeccak_hmac_state` from a buffer - *  - * @param   state  The slot for the unmarshalled state, must not be - *                 initialised (memory leak otherwise), can be `NULL` - * @param   data_  The input buffer - * @return         The number of bytes read from `data`, 0 on error - */ -size_t -libkeccak_hmac_unmarshal(struct libkeccak_hmac_state *restrict state, const void *restrict data_) -{ -	const unsigned char *restrict data = data_; -	size_t parsed, size, i; - -	state->key_opad = NULL; -	state->key_ipad = NULL; - -	parsed = libkeccak_state_unmarshal(state ? &state->sponge : NULL, data); -	if (!parsed) -		return 0; -	data += parsed; - -	__builtin_memcpy(&size, data, sizeof(size)); -	data += sizeof(size_t); -	if (state) -		size = state->key_length; -	size = (state->key_length + 7) >> 3; - -	if (state) { -		state->key_opad = malloc(2 * size); -		if (!state->key_opad) { -			libkeccak_state_destroy(&state->sponge); -			return 0; -		} -		memcpy(state->key_opad, data, size); -		data += size; - -		if (data[0]) { -			state->key_ipad = &state->key_opad[size]; -			memcpy(state->key_ipad, state->key_opad, size); -			for (i = 0; i < size; i++) -				state->key_ipad[i] ^= (char)(HMAC_OUTER_PAD ^ HMAC_INNER_PAD); -		} - -		state->leftover = data[1]; -		state->buffer = NULL; -		state->buffer_size = 0; -	} - -	return parsed + sizeof(size_t) + size + 2 * sizeof(char); -} | 
