2 sha1sum \- compute and check SHA1 message digest
4 .\" Add any additional description here
6 Do not use the SHA-1 algorithm for security related purposes.
7 Instead, use an SHA\-2 algorithm, implemented in the programs
8 sha224sum(1), sha256sum(1), sha384sum(1), sha512sum(1),
9 or the BLAKE2 algorithm, implemented in b2sum(1)