osx man page for otp

Query: otp

OS: osx

Section: n

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

otp(n)							RFC 2289 A One-Time Password System						    otp(n)

__________________________________________________________________________________________________________________________________________________

NAME
otp - One-Time Passwords
SYNOPSIS
package require Tcl 8.2 package require otp ?1.0.0? ::otp::otp-md4 ?-hex? ?-words? -seed seed -count count data ::otp::otp-md5 ?-hex? ?-words? -seed seed -count count data ::otp::otp-sha1 ?-hex? ?-words? -seed seed -count count data ::otp::otp-rmd160 ?-hex? ?-words? -seed seed -count count data _________________________________________________________________
DESCRIPTION
This package is an implementation in Tcl of the One-Time Password system as described in RFC 2289 (1). This system uses message-digest algorithms to sequentially hash a passphrase to create single-use passwords. The resulting data is then provided to the user as either hexadecimal digits or encoded using a dictionary of 2048 words. This system is used by OpenBSD for secure login and can be used as a SASL mechanism for authenticating users. In this implementation we provide support for four algorithms that are included in the tcllib distribution: MD5 (2), MD4 (3), RIPE-MD160 (4) and SHA-1 (5).
COMMANDS
::otp::otp-md4 ?-hex? ?-words? -seed seed -count count data ::otp::otp-md5 ?-hex? ?-words? -seed seed -count count data ::otp::otp-sha1 ?-hex? ?-words? -seed seed -count count data ::otp::otp-rmd160 ?-hex? ?-words? -seed seed -count count data
EXAMPLES
% otp::otp-md5 -count 99 -seed host67821 "My Secret Pass Phrase" (binary gibberish) % otp::otp-md5 -words -count 99 -seed host67821 "My Secret Pass Phrase" SOON ARAB BURG LIMB FILE WAD % otp::otp-md5 -hex -count 99 -seed host67821 "My Secret Pass Phrase" e249b58257c80087
REFERENCES
[1] Haller, N. et al., "A One-Time Password System", RFC 2289, February 1998. http://www.rfc-editor.org/rfc/rfc2289.txt [2] Rivest, R., "The MD5 Message-Digest Algorithm", RFC 1321, MIT and RSA Data Security, Inc, April 1992. (http://www.rfc-edi- tor.org/rfc/rfc1321.txt) [3] Rivest, R., "The MD4 Message Digest Algorithm", RFC 1320, MIT, April 1992. (http://www.rfc-editor.org/rfc/rfc1320.txt) [4] H. Dobbertin, A. Bosselaers, B. Preneel, "RIPEMD-160, a strengthened version of RIPEMD" http://www.esat.kuleuven.ac.be/~cosi- cart/pdf/AB-9601/AB-9601.pdf [5] "Secure Hash Standard", National Institute of Standards and Technology, U.S. Department Of Commerce, April 1995. (http://www.itl.nist.gov/fipspubs/fip180-1.htm) BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category otp of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation.
SEE ALSO
SASL, md4, md5, ripemd160, sha1
KEYWORDS
hashing, message-digest, password, rfc 2289, security
CATEGORY
Hashes, checksums, and encryption
COPYRIGHT
Copyright (c) 2006, Pat Thoyts <patthoyts@users.sourceforge.net> otp 1.0.0 otp(n)
Related Man Pages
otp(3tcl) - debian
otp-md5(1) - suse
otp(n) - suse
otp-md4(1) - freebsd
otp-sha(1) - freebsd
Similar Topics in the Unix Linux Community
count no of words in a line
Unix: lowercase to uppercase
how to get data from hex file using SED or AWK based on pattern sign
Search the pattern and copy in to the file
AWK count letters words