diff options
Diffstat (limited to 'src/ref/lilliput-ae-utils.h')
| -rw-r--r-- | src/ref/lilliput-ae-utils.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/ref/lilliput-ae-utils.h b/src/ref/lilliput-ae-utils.h index a66b75c..19b4623 100644 --- a/src/ref/lilliput-ae-utils.h +++ b/src/ref/lilliput-ae-utils.h @@ -102,12 +102,15 @@ static inline void fill_index_tweak( uint8_t tweak[TWEAK_BYTES] ) { - /* With an s-bit block index, the t-bit tweak is filled as follows: + /* The t-bit tweak is filled as follows: * - * [ 1, 4]: 4-bit prefix - * [ 5, t]: block index - * [ 5, t-s]: 0-padding - * [t-s+1, t]: actual block index, from MSB to LSB + * 1 4 5 t + * [ prefix || block index ] + * + * The s-bit block index is encoded as follows: + * + * 5 t-s t-s+1 t + * [ zero padding || block index, MSB first ] */ tweak[0] = prefix<<4; |