Update crypto code from Catacomb 2.5.0.
[secnet] / sha512.c
2019-09-25 Mark Woodingsha512.c, etc.: Provide `sha512' as a hash function...
2019-09-25 Mark Woodingsha512.[ch]: Remove a bunch of unused code.
2013-07-25 Ian Jacksoncrypto: Copy a SHA512 implementation into tree