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- MD5(1) MD5(1)
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- NNAAMMEE
- md5 - calculate a message-digest fingerprint (checksum)
- for a file
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- SSYYNNOOPPSSIISS
- mmdd55 [ -p | -t | -x | -sstring | filename(s) ]
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- DDEESSCCRRIIPPTTIIOONN
- mmdd55 takes as input a message of arbitrary length and pro-
- duces as output a 128-bit "fingerprint" or "message
- digest" of the input. It is conjectured that it is compu-
- tationally infeasible to produce two messages having the
- same message digest, or to produce any message having a
- given prespecified target message digest. The MD5 algo-
- rithm is intended for digital signature applications,
- where a large file must be "compressed" in a secure manner
- before being encrypted with a private (secret) key under a
- public-key cryptosystem such as _R_S_A_.
-
- OOPPTTIIOONNSS
- The following four options may be used in any combination,
- except that ffiilleennaammee((ss)) must be the last objects on the
- command line.
-
- --ssssttrriinngg prints a checksum of the given "string".
-
- --pp echos stdin to stdout and appends the MD5 sum to std-
- out.
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- --tt runs a built-in time trial.
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- --xx runs a built-in test script.
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- ffiilleennaammee((ss)) prints a checksum(s) for each of the files.
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- SSEEEE AALLSSOO
- cckkssuumm(1)
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- RFC 1321 describes in detail the MD2, MD4, and MD5 mes-
- sage-digest algorithms.
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- AACCKKNNOOWWLLEEDDGGEEMMEENNTTSS
- This program is placed in the public domain for free gen-
- eral use by RSA Data Security.
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- Feb 14, 1994 1
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- 1H