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Diffstat (limited to '')
| -rw-r--r-- | README | 66 |
1 files changed, 60 insertions, 6 deletions
@@ -2,12 +2,13 @@ NAME blakesum - Checksum utilities for the BLAKE-family of hashing functions SYNOPSIS - bsum [-l bits] [-c | -B | -L | -U] [-xz] [file] ... - b224sum [-c | -B | -L | -U] [-xz] [file] ... - b256sum [-c | -B | -L | -U] [-xz] [file] ... - b384sum [-c | -B | -L | -U] [-xz] [file] ... - b512sum [-c | -B | -L | -U] [-xz] [file] ... - b2sum [-l bits | -X bits] [-c | -B | -L | -U] [-sxz] [file] ... + bsum [-l bits] [-S salt] [-c | -B | -L | -U] [-xz] [file] ... + b224sum [-S salt] [-c | -B | -L | -U] [-xz] [file] ... + b256sum [-S salt] [-c | -B | -L | -U] [-xz] [file] ... + b384sum [-S salt] [-c | -B | -L | -U] [-xz] [file] ... + b512sum [-S salt] [-c | -B | -L | -U] [-xz] [file] ... + b2sum [-l bits | -X bits] [-K key] [-P pepper] [-S salt] \ + [-c | -B | -L | -U] [-sxz] [file] ... DESCRIPTION Print or check BLAKE, BLAKE2, or BLAKE2X checksums. @@ -38,6 +39,21 @@ OPTIONS or <tab>, or if they contain a <newline>, unless the -z option is also used. + -K key + (Only available in b2sum) + Specify a key (which is used for MAC and PRF), that is + up to 32 bytes (if the -s option is used) or 64 bytes + (otherwise) long, that the algorithm shall use. The + key shall be expressed in hexadecimal: each byte in the + key shall be expressed, from left to right, as a pairs + of hexadecimal digits where highest bits in each byte + is stored in the left digit in its pair and the lowest + bits in each byte is stored in the right digit in its + pair. No delimiters are used, so for a 4 byte key where + each byte's value is its index, the key is expessed as + 00010203, however each letter may be either small or + capital. The key may not be empty. + -L Output checksums in lower-case hexadecimal representation. (Default) @@ -52,6 +68,44 @@ OPTIONS the -s option is used between 8 and 256, inclusively. (Default is maximum.) + -P pepper + (Only available in b2sum) + Specify an 8-byte (if the -s option is used) or 16-byte + pepper ("personalisation") (otherwise) that the algorithm + shall use. This pepper shall be expressed in full length + hexadecimal: 16 (for 8-byte) or 32 (for 16-byte) + hexadecimal digits, or rather 8 or 16 pairs of hexadecimal + digits, ordered from left to right to specify the values + from index 0 to the last byte. In each pair, the left + digit stores the high bits of the byte, and the right + digit stores the low bits of the byte. For example, the + digit pair 80 represents a byte with the decimal value + 128, whereas the digit pair 08 represents a byte with + the decimal value 8. The pairs are joined without any + delimiters, and no byte may be omitted. So, for a 8 byte + pepper where each byte's value is its index, the pepper + is expressed as 0001020304050607, however each letter + may be either small or capital. If no pepper is specified, + an all-zeroes pepper is used. + + -S salt + Specify a salt that the algorithm shall use. The + size of the salt depends on which algorithm used. + This salt shall be expressed in full length hexadecimal. + The decimal digits are logically groupped in pairs that + are ordered from left to right to specify the values + from index 0 to the last byte. In each pair, the left + digit stores the high bits of the byte, and the right + digit stores the low bits of the byte. For example, + the digit pair 80 represents a byte with the decimal + value 128, whereas the digit pair 08 represents a byte + with the decimal value 8. The pairs are joined without + any delimiters, and no byte may be omitted. So, for a + 16 byte salt where each byte's value is its index, the + salt is expressed as 000102030405060708090a0b0c0d0e0f, + however each letter may be either small or capital. If + no salt is specified, an all-zeroes salt is used. + -s (Only available in b2sum) Use BLAKE2s instead of BLAKE2b. |