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freebsd-ports/security/pkcrack/Makefile

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This package implements an algorithm for breaking the PkZip cipher that was devised by Eli Biham and Paul Kocher. This program applies a known plaintext attack to an encrypted file. A known-plaintext-attack recovers a password using the encrypted file and (part of) the unencrypted file. Please note that cryptographers use the word 'plaintext' for any kind of unencrypted data - not necessarily readable ASCII text. Before you ask why somebody may want to know the password when he already knows the plaintext think of the following situations: - Usually there's a large number of files in a ZIP-archive. Usually all these files are encrypted using the same password. So if you know one of the files, you can recover the password and decrypt the other files. - You need to know only a part of the plaintext (at least 13 bytes). Many files have commonly known headers, like DOS .EXE-files. Knowing a reasonably long header you can recover the password and decrypt the entire file. WWW: http://www.unix-ag.uni-kl.de/~conrad/krypto/pkcrack.html PR: ports/84192 Submitted by: Emanuel Haupt <ehaupt@critical.ch>
2005-07-28 12:32:17 +02:00
# New ports collection makefile for: pkcrack
# Date created: 27 Jul 2005
# Whom: Emanuel Haupt <ehaupt@critical.ch>
#
# $FreeBSD$
#
PORTNAME= pkcrack
PORTVERSION= 1.2.2
CATEGORIES= security
Add an additional mirror.
2006-06-01 14:13:54 +02:00
MASTER_SITES= http://www.unix-ag.uni-kl.de/~conrad/krypto/pkcrack/ \
Use MASTER_SITE_CRITICAL
2008-03-27 20:27:34 +01:00
CRITICAL
This package implements an algorithm for breaking the PkZip cipher that was devised by Eli Biham and Paul Kocher. This program applies a known plaintext attack to an encrypted file. A known-plaintext-attack recovers a password using the encrypted file and (part of) the unencrypted file. Please note that cryptographers use the word 'plaintext' for any kind of unencrypted data - not necessarily readable ASCII text. Before you ask why somebody may want to know the password when he already knows the plaintext think of the following situations: - Usually there's a large number of files in a ZIP-archive. Usually all these files are encrypted using the same password. So if you know one of the files, you can recover the password and decrypt the other files. - You need to know only a part of the plaintext (at least 13 bytes). Many files have commonly known headers, like DOS .EXE-files. Knowing a reasonably long header you can recover the password and decrypt the entire file. WWW: http://www.unix-ag.uni-kl.de/~conrad/krypto/pkcrack.html PR: ports/84192 Submitted by: Emanuel Haupt <ehaupt@critical.ch>
2005-07-28 12:32:17 +02:00
Change MAINTAINER address for my ports. Approved by: novel (mentor)
2005-10-06 13:57:11 +02:00
MAINTAINER= ehaupt@FreeBSD.org
This package implements an algorithm for breaking the PkZip cipher that was devised by Eli Biham and Paul Kocher. This program applies a known plaintext attack to an encrypted file. A known-plaintext-attack recovers a password using the encrypted file and (part of) the unencrypted file. Please note that cryptographers use the word 'plaintext' for any kind of unencrypted data - not necessarily readable ASCII text. Before you ask why somebody may want to know the password when he already knows the plaintext think of the following situations: - Usually there's a large number of files in a ZIP-archive. Usually all these files are encrypted using the same password. So if you know one of the files, you can recover the password and decrypt the other files. - You need to know only a part of the plaintext (at least 13 bytes). Many files have commonly known headers, like DOS .EXE-files. Knowing a reasonably long header you can recover the password and decrypt the entire file. WWW: http://www.unix-ag.uni-kl.de/~conrad/krypto/pkcrack.html PR: ports/84192 Submitted by: Emanuel Haupt <ehaupt@critical.ch>
2005-07-28 12:32:17 +02:00
COMMENT= A utility for breaking pkzip encryption
USE_GMAKE= yes
Mark MAKE_JOBS_SAFE
2009-03-27 10:53:36 +01:00
MAKE_JOBS_SAFE= yes
This package implements an algorithm for breaking the PkZip cipher that was devised by Eli Biham and Paul Kocher. This program applies a known plaintext attack to an encrypted file. A known-plaintext-attack recovers a password using the encrypted file and (part of) the unencrypted file. Please note that cryptographers use the word 'plaintext' for any kind of unencrypted data - not necessarily readable ASCII text. Before you ask why somebody may want to know the password when he already knows the plaintext think of the following situations: - Usually there's a large number of files in a ZIP-archive. Usually all these files are encrypted using the same password. So if you know one of the files, you can recover the password and decrypt the other files. - You need to know only a part of the plaintext (at least 13 bytes). Many files have commonly known headers, like DOS .EXE-files. Knowing a reasonably long header you can recover the password and decrypt the entire file. WWW: http://www.unix-ag.uni-kl.de/~conrad/krypto/pkcrack.html PR: ports/84192 Submitted by: Emanuel Haupt <ehaupt@critical.ch>
2005-07-28 12:32:17 +02:00
WRKSRC= ${WRKDIR}/${DISTNAME}/src
PLIST_FILES= bin/pkextract bin/pkfindkey bin/pkmakekey bin/pkcrack bin/zipdecrypt
PORTDOCS= README pkzip.ps.gz
do-install:
.for f in pkcrack zipdecrypt
${INSTALL_PROGRAM} ${WRKSRC}/${f} ${PREFIX}/bin
.endfor
# these file names are too generic
.for f in extract findkey makekey
${INSTALL_PROGRAM} ${WRKSRC}/${f} ${PREFIX}/bin/pk${f}
.endfor
.if !defined(NOPORTDOCS)
${MKDIR} ${DOCSDIR}
.for f in ${PORTDOCS}
${INSTALL_DATA} ${WRKDIR}/${DISTNAME}/doc/${f} ${DOCSDIR}
.endfor
.endif
.include <bsd.port.mk>
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