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 --- util/libkeccak_behex_upper.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 util/libkeccak_behex_upper.c (limited to 'util/libkeccak_behex_upper.c') diff --git a/util/libkeccak_behex_upper.c b/util/libkeccak_behex_upper.c new file mode 100644 index 0000000..5186a28 --- /dev/null +++ b/util/libkeccak_behex_upper.c @@ -0,0 +1,22 @@ +/* See LICENSE file for copyright and license details. */ +#include "../common.h" + + +/** + * Convert a binary hashsum to upper case hexadecimal representation + * + * @param output Output array, should have an allocation size of at least `2 * n + 1` + * @param hashsum_ The hashsum to convert + * @param n The size of `hashsum` + */ +void +libkeccak_behex_upper(char *restrict output, const void *restrict hashsum_, size_t n) +{ + const unsigned char *restrict hashsum = hashsum_; + + output[2 * n] = '\0'; + while (n--) { + output[2 * n + 0] = "0123456789ABCDEF"[(hashsum[n] >> 4) & 15]; + output[2 * n + 1] = "0123456789ABCDEF"[(hashsum[n] >> 0) & 15]; + } +} -- cgit v1.2.3-70-g09d2