4 dgst, md5, md2, sha1, sha, mdc2, ripemd160 - message digests
9 [B<-md5|-md2|-sha1|-sha|mdc2|-ripemd160>]
14 [B<md5|md2|sha1|sha|mdc2|ripemd160>]
21 The digest functions print out the message digest of a supplied file or files
30 print out the digest in two digit groups separated by colons.
34 print out BIO debugging information.
38 file or files to digest. If no files are specified then standard input is
45 The digest of choice for all new applications is SHA1. Other digests are
46 however still widely used.