digest -a <algo> [-k <key> | -K <file>] [-s <sig> | -S <file>] FILE|AREA
Calculate a digest over a FILE or a memory area.
-a <algo> | hash or signature algorithm to use |
-k <key> | use supplied <key> (ASCII or hex) for MAC |
-K <file> | use key from <file> (binary) for MAC |
-v <hex> | verify data against supplied <hex> (hash, MAC or signature) |
-V <file> | verify data against <file> (hash, MAC or signature) |