diff options
Diffstat (limited to 'src/utils.c')
| -rw-r--r-- | src/utils.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c new file mode 100644 index 0000000..2abadb6 --- /dev/null +++ b/src/utils.c @@ -0,0 +1,43 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* utils.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: charles <me@cacharle.xyz> +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2020/08/01 15:00:16 by charles #+# #+# */ +/* Updated: 2020/08/01 19:24:41 by charles ### ########.fr */ +/* */ +/* ************************************************************************** */ + +#include "ft_ssl.h" + +#define HEX_CHARS "0123456789abcdef" + +uint32_t rotate_left(uint32_t x, int s) +{ + return (x << s) | (x >> (32 - s)); +} + +uint32_t rotate_right(uint32_t x, int s) +{ + return (x >> s) | (x << (32 - s)); +} + +char *bytes_to_str(uint8_t *bytes, size_t size) +{ + char *ret; + size_t i; + + if ((ret = ft_strnew(size * 2)) == NULL) + return (NULL); + + i = 0; + while (i < size) + { + ret[i * 2 + 0] = HEX_CHARS[(bytes[i] & 0xf0) >> 4]; + ret[i * 2 + 1] = HEX_CHARS[(bytes[i] & 0x0f) >> 0]; + i++; + } + return (ret); +} |