7 .Nd calculate a message-digest fingerprint (checksum) for a file
15 takes as input a message of arbitrary length and produces
20 of the input. It is conjectured that it is computationally infeasible to
21 produce two messages having the same message digest, or to produce any
22 message having a given prespecified target message digest.
23 The MD5 algorithm is intended for digital signature applications, where a
26 in a secure manner before being encrypted with a private
28 key under a public-key cryptosystem such as
31 The following four options may be used in any combination and must
32 precede any files named on the command line. The MD5
33 sum of each file listed on the command line is printed after the options
35 .Bl -tag -width indent
37 Print a checksum of the given
40 Echo stdin to stdout and appends the MD5 sum to stdout.
42 Quiet mode - only the MD5 sum is printed out. Overrides the
46 Reverses the format of the output. This helps with visual diffs. Does nothing
47 when combined with the
51 Run a built-in time trial.
53 Run a built-in test script.
59 .%T The MD5 Message-Digest Algorithm
63 This program is placed in the public domain for free general use by