From d4ce8327ff902b5ecd42d057063c03793e6d91c2 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sun, 15 Sep 2024 02:15:08 +0200 Subject: Organise files MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- extra/libkeccak_state_copy.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 extra/libkeccak_state_copy.c (limited to 'extra/libkeccak_state_copy.c') diff --git a/extra/libkeccak_state_copy.c b/extra/libkeccak_state_copy.c new file mode 100644 index 0000000..950fc91 --- /dev/null +++ b/extra/libkeccak_state_copy.c @@ -0,0 +1,25 @@ +/* See LICENSE file for copyright and license details. */ +#include "../common.h" + + +/** + * Make a copy of a state + * + * @param dest The slot for the duplicate, must not be initialised (memory leak otherwise) + * @param src The state to duplicate + * @return Zero on success, -1 on error + */ +int +libkeccak_state_copy(struct libkeccak_state *restrict dest, const struct libkeccak_state *restrict src) +{ + *dest = *src; + if (src->mlen) { + dest->M = malloc(src->mlen * sizeof(char)); + if (!dest->M) + return -1; + memcpy(dest->M, src->M, src->mptr * sizeof(char)); + } else { + dest->M = NULL; + } + return 0; +} -- cgit v1.2.3-70-g09d2