From 5ff4c5af715d098852d124de116d354ee10f4ea4 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Mon, 11 Feb 2019 16:22:00 +0100 Subject: Split most .c files into one per function and flatten file hierarchy MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libkeccak_state_unmarshal.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 libkeccak_state_unmarshal.c (limited to 'libkeccak_state_unmarshal.c') diff --git a/libkeccak_state_unmarshal.c b/libkeccak_state_unmarshal.c new file mode 100644 index 0000000..7177bd5 --- /dev/null +++ b/libkeccak_state_unmarshal.c @@ -0,0 +1,36 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * Unmarshal a `libkeccak_state_t` from a buffer + * + * @param state The slot for the unmarshalled state, must not be initialised (memory leak otherwise) + * @param data The input buffer + * @return The number of bytes read from `data`, 0 on error + */ +size_t +libkeccak_state_unmarshal(libkeccak_state_t *restrict state, const void *restrict data_) +{ +#define get(type, var) state->var = *((const type *)data), data += sizeof(type) / sizeof(char) + const char *restrict data = data_; + get(long int, r); + get(long int, c); + get(long int, n); + get(long int, b); + get(long int, w); + get(int64_t, wmod); + get(long int, l); + get(long int, nr); + memcpy(state->S, data, sizeof(state->S)); + data += sizeof(state->S) / sizeof(char); + get(size_t, mptr); + get(size_t, mlen); + state->M = malloc(state->mptr * sizeof(char)); + if (!state->M) + return 0; + memcpy(state->M, data, state->mptr * sizeof(char)); + data += state->mptr; + return sizeof(libkeccak_state_t) - sizeof(char *) + state->mptr * sizeof(char); +#undef get +} -- cgit v1.2.3-70-g09d2