.RB [ \-f0ecbv ]
.RB [ \-a
.IR algorithm ]
+.RB [ \-E
+.IR encoding ]
.IR files ...
.SH DESCRIPTION
The
.B "\-u, \-\-usage"
Prints a brief usage summary to standard output and exits successfully.
.TP
+.BR "\-l, \-\-list " [ \fIitem ...]
+Show lists of hash functions and encodings supported.
+.TP
.BI "\-a, \-\-algorithm=" alg
Use the hash algorithm
.IR alg .
.B "Hashing algorithms"
below.
.TP
-.B "\-l, \-\-list"
-Prints a space-separated list of available hashing algorithms to
-standard output and exits successfully.
+.BI "\-E, \-\-encoding=" encoding
+Use the given
+.I encoding
+to represent hashes in the output. This is not interoperable with other
+programs, but it's handy, e.g., for building sha1 URNs. The encodings
+recognized are
+.B hex
+(the default),
+.B base64
+and
+.BR base32 .
+Type
+.B hashsum \-\-list enc
+for a list of supported encodings.
.TP
.B "\-f, \-\-files"
Each input file is considered to be a list of filenames which should be
Subsequent hashes in this file were generated using the algorithm
.IR alg .
.TP
+.BI "#encoding " encoding
+Subsequent hashes in this file are represented using the named
+.IR encoding .
+.TP
.BI "#escape"
Filenames in subsequence lines are written using the `escaped' format,
described below.
.PP
A
.I "file line"
-consists of a hash, in hexadecimal, followed by a space, a
+consists of a hash, in the requested encoding, followed by a space, a
.IR flag ,
-and the filename. If the current hash algorithm produces
-.IR n -bit
-output, there must be
-.IR n /4
-hex digits of hash in a file line. The
+and the filename. The
.I flag
is either a star
.RB (` * ')
projects / u / mdw / catacomb / blobdiff