sha2 - phpMan

File: coreutils.info,  Node: sha2 utilities,  Prev: sha1sum invocation,  Up: Summarizing files
6.6 sha2 utilities: Print or check SHA-2 digests
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The commands 'sha224sum', 'sha256sum', 'sha384sum' and 'sha512sum'
compute checksums of various lengths (respectively 224, 256, 384 and 512
bits), collectively known as the SHA-2 hashes.  The usage and options of
these commands are precisely the same as for 'md5sum'.  *Note md5sum
invocation::.
   Note: The SHA384 and SHA512 digests are considerably slower to
compute, especially on 32-bit computers, than SHA224 or SHA256.