Crypt (Unix) - Factbites

Crypt (Unix) - Factbites
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Topic: Crypt (Unix)

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	m2.txt
		UNIX System Security (Bishop, (C)1991-1995) LISA `95, M2, # 90 Software Fastest freely available version of crypt(3) is ufc crypt by Michael Glad via anonymous ftp to ftp.uu.net:usenet/comp.sources.misc/ volume28/ufc-crypt Faster ones have been done for specialized hardware (e.g.
		UNIX System Security (Bishop, (C)1991-1995) LISA `95, M2, # 40 On Some Systems * repeatedly guessing a login/password pair may be very slow and may raise alarms Examples of such systems are IBM's AIX, but this feature can be set or cleared by the sysadmin.
		UNIX System Security (Bishop, (C)1991-1995) LISA `95, M2, # 44 What a Password Is A password authenticates a user, binding that identity to all actions undertaken during that session.
	penta.ufrgs.br /gereseg/m2.txt (1150 words)

	COMSOLTECH, INC. Home Page
		Active Unix Crypt is a small and fast windows component that behaves like Unix crypt() function, supporting both DES (2 salt characters) and MD5 (up to 8 salt characters) algorithm.
		Does crypt() on the word with the salt string.
		The salt can be 2 character, then crypt() will do DES crypt.
	www.comsoltech.com /products/components/activeunixcrypt (1150 words)

	crypt - definition by dict.die.net
		crypt Unix command to perform encryption and decryption.
		crypt n : a cellar or vault or underground burial chamber (especially beneath a church)
		My knees are bowed in crypt and shrine.
	dict.die.net /crypt (1150 words)

	8.4 crypt -- Function to check Unix passwords
		This module implements an interface to the crypt(3) routine, which is a one-way hash function based upon a modified DES algorithm; see the Unix man page for further details.
		import crypt, getpass, pwd def login(): username = raw_input('Python login:') cryptedpasswd = pwd.getpwnam(username)[1] if cryptedpasswd: if cryptedpasswd == 'x' or cryptedpasswd == '': raise "Sorry, currently no support for shadow passwords" cleartext = getpass.getpass() return crypt*.crypt(cleartext, cryptedpasswd) == cryptedpasswd else: return 1
		Release 2.4.2, documentation updated on 28 September 2005.
	www.python.org /doc/current/lib/module-crypt.html (1150 words)

	UNIX Lab 5
		FILE=${DIR}/temp echo "This was an empty file" >>${FILE} p-danzig-2.jct.ac.il:~/unix_programming/lab5 % touch temp p-danzig-2.jct.ac.il:~/unix_programming/lab5 % cat temp p-danzig-2.jct.ac.il:~/unix_programming/lab5 %./example1 /usr/u/jctstaff/danzig/unix_programming/lab5 p-danzig-2.jct.ac.il:~/unix_programming/lab5 % cat temp This was an empty file---------------------------------------------------------------- A shell script which demonstrates parsing a command line for flags in any order using the shift command.
		prompt#> cat perl1.pl #!/usr/bin/perl -w # print crypt($ARGV[0],"salt") Here I call the program from my home directory.
		cat > red.out #redirect stderr to stdout, pipe it into red.out prompt#>red5 prompt#>cat red.out cat: abc: No such file or directory #our error message ---------------------------------------------------------------- A shell script to add a line to an already existing file.
	www.koheles.com /unix_class/Lab5.html (1150 words)

	Top 75 Network Security Tools
		It supports several crypt(3) password hash types which are most commonly found on various Unix flavors, as well as Kerberos AFS and Windows NT/2000/XP LM hashes.
		They note that "the author reserves the right to change this license agreement as he sees fit, without notice." UNIX users (and advanced Win users) may want to look at Kismet instead.
		A simple Unix utility which reads and writes data across network connections, using TCP or UDP protocol.
	www.insecure.org /tools.html (1150 words)

	workbench - OneLook Dictionary Search
		Phrases that include workbench: abap workbench, crypt breakers workbench, physics analysis workbench, programmer's workbench unix, programmers workbench unix
		Words similar to workbench: bench, work bench, more...
		Workbench : Online Plain Text English Dictionary [home, info]
	www.onelook.com /?w=workbench&ls=a (195 words)

	Crypt - www.cryptnet.com/
		crypt() will return an encrypted string using the standard Unix DES-based encryption algorithm or alternative
		St George's Crypt is a charity providing shelter and advice to homeless, rootless and disadvantaged people.
		Called by the Guinness Book of World Records "the first successful time capsule," this one is not scheduled to be opened until the year 8113.
	www.iseeklinks.com /q/crypt.htm (199 words)

	WhyNotEncryptedPasswords - FOAF Wiki
		Two common functions or algorithms for encrypting passwords are found in Unix and Unix-like systems.
		Unix "passwd" files used to be world-readable, and still are on many Unix systems and by tools using the same functions, based on the assumption that one couldn't quickly match the encrypted passwords.
		The 'crypt' function dates back to the original Unix systems, newer systems' crypt function also support using the MD5 message-digest algorithm as part of the encryption.
	rdfweb.org /topic/WhyNotEncryptedPasswords (199 words)

	cops_dan_farmer.txt
		Reed, J.A. and P.J. Weinberger, File Security and the UNIX System Crypt Command, Vol 63, No. 8, AT&T Bell Laboratories Technical Journal, October 1984.
		The crypt command, although proven to be insecure for a knowledgeable and resourceful attacker ([Reed and Weinberger 84], [Baldwin 86]), does offer an added shield against most unauthorized users.
		Smith, Kirk, Tales of the Damned, UNIX Review, February 1988.
	www.deter.com /unix/papers/cops_dan_farmer.txt (4317 words)

	eTrust PestPatrol Pest Encyclopedia - John the Ripper
		UNIX password cracking tool: 'featuring modes for all major unix crypt formats, including OpenBSDs Blowfish, FreeBSDs MD5, BSDIs extended-DES, and the venerable UNIX crypt().
		While password crackers are not always used for good, this type of password cracker would require access to the /etc/passwd or /etc/shadow file.
		These files are always set by default to read/write mode for SUID 0 only unless given to another user by the root user.
	www.pestpatrol.com /pestinfo/j/john_the_ripper.asp (4317 words)

	Info Node: (efaq)Editing MS-DOS files
		Among other things, `crypt++' transparently modifies MS-DOS files as they are loaded and saved, allowing you to ignore the different conventions that Unix and MS-DOS have for delineating the end of a line.
		On Unix and GNU/Linux systems, and also on a Macintosh, the string `(DOS)' will appear near the left edge of the mode line; on DOS and Windows, where the DOS end-of-line (EOL) format is the default, a backslash (`\') will appear in the mode line.
		You can open MS-DOS files on a Unix system, edit it, and save it without having to worry about the file format.
	www.cs.vassar.edu /cgi-bin/info2www?(efaq)Editing+MS-DOS+files (4317 words)

	Cryptography
		The Digital Encryption Standard was developed by IBM and the National Security Agency (NSA) of the USA in the 50s and forms the basis not only for the Unix password program, but also for the Automatic Teller Machines PIN authentication.
		This includes an implimentation of triple DES, believed to be much stronger than ordinary DES, and a fast implimentation of the Unix password subroutine, crypt(3).
		IDEA is a cryptosystem which was developed by Dr. X.
	axion.physics.ubc.ca /crypt.html (4317 words)

	snuffle.txt
		Pick up snefru from comp.sources.unix, volume 21, and compile it; snuffle should take less than a minute after that.
		Date: 14 Jun 90 09:02:47 GMT Followup-To: sci.crypt Distribution: usa Organization: IR Lines: 334 Xref: nosun sci.crypt:3208 alt.sources:1943 This is snuffle, a reasonably fast, private-key encryption package that uses (but isn't derived from) Merkle's Snefru.
		It runs about two to three times slower than crypt on this Sun 4 (87K a second).
	www.ussrback.com /crypto/snuffle/snuffle.txt (241 words)

	Re: SMTP AUTH
		PLAIN and LOGIN can hash the transmitted password and compare > against a stored hash, e.g., as created by the Unix crypt function.
		I had a bit of a fiddle last night with Digest::MD5 and crypt, in an attempt to make it encrypt a phrase in the same manner as /etc/shadow.
		If either will then we can authenticate against /etc/shadow itself, or where ever you wish to store MD5/crypt passwords, no matter which SASL authentication type is used.
	www.mail-archive.com /qpsmtpd@perl.org/msg00659.html (241 words)

	john.dox
		A: Actually, some parts of crypt() are not of my own: the assembly version of XForm() is based on the one by Roman Rusakov (but I optimized it even more and adapted for usage here) and the crypt() initialization routine is from Crack v4.1 by Alec Muffett.
		A: John's crypt() routine requires a CPU with internal cache to run fast.
		John the Ripper -- THE replacement for your old Cracker Jack ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ I assume that you have already seen Cracker Jack, which had been the best UNiX password cracker for DOS until I coded this one.
	web.textfiles.com /computers/john.dox (572 words)

	Cryptography
		(This should not be confused with the subroutines of the same name used in the Unix password system.) It is based on a software implimentation of the WWII German Enigma cypher, broken by the Polish and British cryptographers during the war.
		Many Unix systems come supplied with an encryption system called crypt.
		Also 740.13(e) gives the general exemption for open source, royalty free software, and the requirements for making use of this.) These are unfortunately far less readable than are the ITAR regulations so figuring out what is allowed and what not has become far more complicated.
	axion.physics.ubc.ca /crypt.html (572 words)

	sci.crypt: Physically Observable Cryptography" by Silvio Micali and Leonid Reyzin"
		Home > Newsgroups > sci.crypt > 2003-06 News Mailing-Lists Service UNIX / Linux / Coding / Shop / Directory Privacy
		Physically Observable Cryptography" by Silvio Micali and Leonid Reyzin"
		sci.crypt: Physically Observable Cryptography" by Silvio Micali and Leonid Reyzin"
	www.derkeiler.com /Newsgroups/sci.crypt/2003-06/0656.html (404 words)

	Mcrypt - Wikipedia, the free encyclopedia
		mcrypt is a replacement for the popular in the UNIX world crypt command.
		Mcrypt provides the same functionality but uses several modern algorithms such as AES.
		The crypt was a file encryption tool that was using an algorithm very close to the World War II enigma cipher, which was broken.
	en.wikipedia.org /wiki/Mcrypt (109 words)

	Tripcode method? - Wakaba and Kareha support board
		It is essentially a UNIX crypt() call, but with some weirdness to generate the needed salt value from the second and third characters of the tripcode string.
		Essentially what they do is use a better hashing function than crypt(), such as MD5 or SHA1, and combine the trip input with a secret string, so that people who don't know the secret can't try and brute-force the tripcodes at home.
		"Old style" refers to the 2ch-style tripcodes that are in use on a wide variety of script, and is what most people use.
	wakaba.c3.cx /sup/kareha.pl/1099727823/-100 (109 words)

	sci.crypt: A message to Vipul Ved Prakash, India ...
		Home > Newsgroups > sci.crypt > 2004-02 News Mailing-Lists Service UNIX / Linux / Coding / Shop / Directory Privacy
		sci.crypt: A message to Vipul Ved Prakash, India...
		Reply: Prudence: "Re: A message to Vipul Ved Prakash, India..."
	www.derkeiler.com /Newsgroups/sci.crypt/2004-02/1158.html (109 words)

	AFS distributed filesystem FAQ
		On a normal UNIX /etc/passwd file, each password can have been encrypted around 4096 (2^12) different saltings of the crypt(3) algorithm, so for a large number of users it is easy to see that a potentially large (up to 4095) number of seperate encryptions of each word checked has been avoided.
		In UNIX filesystems, when you a remove a file that is kept open by a process, the file stays around physically while it is no longer referenced in any directory (which you will see as a mismatch between disk space usage according to df and du).
		It is established by the fileserver with the caching of a file.
	www.faqs.org /faqs/afs-faq (12287 words)

	cryptography books - Results By Computer Training Search
		...This page contains links and pointers to other web pages dealing with cryptography and information security, Strong Cryptography, Blowfish, DES, c2 Net, DigiCash, Cybercash......announce comp.security.misc comp.security.unix sci.crypt sci.crypt.research talk.politics.crypto Cryptography Books and Publications Algorithmic Number Theory Applied Cryptography......
		cryptography, cryptology, computer security, encryption, information security, applied cryptography Alfred J. Menezes Paul C. van Oorschot and Scott A......
		Cryptography `s Role in Securing the Information Society Kenneth W. Dam and Herbert S......
	www.edcomp.com /results/cryptography-books.html (12287 words)

	sci.crypt: Re: Newbie needs help with unknown cipher
		Home > Newsgroups > sci.crypt > 2004-08 News Mailing-Lists Service UNIX / Linux / Coding / Shop / Directory Privacy
		sci.crypt: Re: Newbie needs help with unknown cipher
		In reply to: Bryan Arnold: "Newbie needs help with unknown cipher"
	www.derkeiler.com /Newsgroups/sci.crypt/2004-08/1911.html (199 words)

	Available Software
		cruft package, a replacement for the UNIX crypt utility.
		cruft package [Linux/UNIX only, 16k] with no legal repercussions, providing you plan to use it for a lawful purpose.
		However, the liberalized export policy on encryption now permits posting noncommercial Open Source encryption software on the Net, pending only a reporting requirement by the software author (done!).
	personal.riverusers.com /~thegrendel/software.html (1340 words)

	Active Server Objects - For Developers
		This component duplicates the Unix Crypt command and makes it available to ASP developers who need the ONE-WAY Crypt command.
		These objects extend the built-in capabilities of ASP.
		Here's the documentation for the custom ASP object DLLs we've installed on of our web servers for you.
	advances.com /hosting/ASP/aspobject.htm (1340 words)

	AFS distributed filesystem FAQ
		On a normal UNIX /etc/passwd file, each password can have been encrypted around 4096 (2^12) different saltings of the crypt(3) algorithm, so for a large number of users it is easy to see that a potentially large (up to 4095) number of seperate encryptions of each word checked has been avoided.
		In UNIX filesystems, when you a remove a file that is kept open by a process, the file stays around physically while it is no longer referenced in any directory (which you will see as a mismatch between disk space usage according to df and du).
		It is established by the fileserver with the caching of a file.
	www.faqs.org /faqs/afs-faq (12287 words)

	john.dox
		John the Ripper -- THE replacement for your old Cracker Jack ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ I assume that you have already seen Cracker Jack, which had been the best UNiX password cracker for DOS until I coded this one.
		A: Actually, some parts of crypt() are not of my own: the assembly version of XForm() is based on the one by Roman Rusakov (but I optimized it even more and adapted for usage here) and the crypt() initialization routine is from Crack v4.1 by Alec Muffett.
		John has been compiled using DJGPP v2 by DJ Delorie with GCC 2.7.2, the DPMI server is by Charles W Sandmann (sandmann@clio.rice.edu; 102 Hurst Ct, Destrehan, LA 70047), its source code is at ftp://x2ftp.oulu.fi/pub/msdos/programming/djgpp/v2misc/csdpmi1s.zip.
	web.textfiles.com /computers/john.dox (12287 words)

	sci.crypt: Re: Newbie having trouble with cracking a cypher
		Home > Newsgroups > sci.crypt > 2003-03 News Mailing-Lists Service UNIX / Linux / Coding / Shop / Directory Privacy
		In reply to: n0-5pam: "Re: Newbie having trouble with cracking a cypher"
		Re: Newbie having trouble with cracking a cypher
	www.derkeiler.com /Newsgroups/sci.crypt/2003-03/2220.html (12287 words)

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