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author | Mattias Andrée <maandree@kth.se> | 2019-02-11 16:22:00 +0100 |
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committer | Mattias Andrée <maandree@kth.se> | 2019-02-11 16:22:00 +0100 |
commit | 5ff4c5af715d098852d124de116d354ee10f4ea4 (patch) | |
tree | 5789ad5798f2dbf21d9406a2942e48b222f773ae /libkeccak_hmac_wipe.c | |
parent | Remove old file (diff) | |
download | libkeccak-5ff4c5af715d098852d124de116d354ee10f4ea4.tar.gz libkeccak-5ff4c5af715d098852d124de116d354ee10f4ea4.tar.bz2 libkeccak-5ff4c5af715d098852d124de116d354ee10f4ea4.tar.xz |
Split most .c files into one per function and flatten file hierarchy
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to '')
-rw-r--r-- | libkeccak_hmac_wipe.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/libkeccak_hmac_wipe.c b/libkeccak_hmac_wipe.c new file mode 100644 index 0000000..fd99c48 --- /dev/null +++ b/libkeccak_hmac_wipe.c @@ -0,0 +1,22 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * Wipe sensitive data wihout freeing any data + * + * @param state The state that should be wipe + */ +void +libkeccak_hmac_wipe(volatile libkeccak_hmac_state_t *restrict state) +{ + volatile char *restrict key_pads; + size_t i, size; + key_pads = state->key_opad; + size = 2 * ((state->key_length + 7) >> 3); + libkeccak_state_wipe(&state->sponge); + for (i = 0; i < size; i++) + key_pads[i] = 0; + state->leftover = 0; + __builtin_memset(state->buffer, 0, state->buffer_size); +} |