rmd160 - calculate a message-digest fingerprint (checksum)
for a file
rmd160 [-p | -t | -x | -c [checklist ...] | -s string | file
rmd160 takes as input a message of arbitrary length and produces as output
a 160-bit "fingerprint" or "message digest" of the input. It is conjectured
that it is computationally infeasible to produce
having the same message digest, or to produce any message
having a given
prespecified target message digest.
The RMD-160 algorithm is intended for digital signature applications,
where a large file must be "compressed" in a secure manner
encrypted with a private (secret) key under a public-key
such as RSA.
The options are as follows:
-c [checklist ...]
Compares all checksums contained in the file
checklist with newly
computed checksums for the corresponding files.
of the digest used, the file name, and an OK or
FAILED for the
result of the comparison. This will validate any of
checksums (see cksum(1)). If no file is given,
stdin is used.
-p Echoes stdin to stdout and appends the RMD-160 sum
Prints a checksum of the given string.
-t Runs a built-in time trial.
-x Runs a built-in test script.
The RMD-160 sum of each file listed on the command line is
the options are processed.
cksum(1), md5(1), sha1(1)
RMD-160 is part of the ISO draft standard "ISO/IEC DIS
10118-3" on dedicated
OpenBSD 3.6 April 30, 2004
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