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This is Encrypted MAC (EMAC), formerly known as Double MAC (DMAC).

Browse Source 
Unlike HMAC, which reuses an existing one-way hash function, such as
MD5, SHA-1 or RIPEMD-160, EMAC reuses an existing block cipher to
produce a secure message authentication code (MAC).

WWW: http://search.cpan.org/dist/Digest-DMAC

PR:		ports/90550
Submitted by:	Gabor Kovesdan
This commit is contained in:
Erwin Lansing 2005-12-17 15:22:03 +00:00
parent be2d8c64c7
commit a1072b7f96
Notes: svn2git 2021-03-31 03:12:20 +00:00 
svn path=/head/; revision=151394
5 changed files with 59 additions and 0 deletions
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1
security/Makefile
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@ -334,6 +334,7 @@
SUBDIR += p5-Digest-CRC
SUBDIR += p5-Digest-Crc32
SUBDIR += p5-Digest-DJB
SUBDIR += p5-Digest-DMAC
SUBDIR += p5-Digest-HMAC
SUBDIR += p5-Digest-Hashcash
SUBDIR += p5-Digest-Haval256

27
security/p5-Digest-DMAC/Makefile Normal file
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@ -0,0 +1,27 @@
# Ports collection Makefile for: p5-Digest-DMAC
# Date created: 17 Dec 2005
# Whom: Gabor Kovesdan
# $FreeBSD$
PORTNAME= Digest-DMAC
PORTVERSION= 1.1.4
CATEGORIES= security perl5
MASTER_SITES= ${MASTER_SITE_PERL_CPAN}
MASTER_SITE_SUBDIR= Digest
PKGNAMEPREFIX= p5-
MAINTAINER= gkovesdan@t-hosting.hu
COMMENT= Perl5 interface to DMAC Double Message-Digest Algorithms
BUILD_DEPENDS= ${SITE_PERL}/Crypt/CBC.pm:${PORTSDIR}/security/p5-Crypt-CBC \
${SITE_PERL}/${PERL_ARCH}/MIME/Base64.pm:${PORTSDIR}/converters/p5-MIME-Base64
PERL_CONFIGURE= yes
MAN3= Digest::DMAC.3
.include <bsd.port.pre.mk>
.if ${PERL_LEVEL} <= 500503
IGNORE= requires Perl 5.6. Intall lang/perl5 or lang/perl5.8, and try again
.endif
.include <bsd.port.post.mk>

3
security/p5-Digest-DMAC/distinfo Normal file
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@ -0,0 +1,3 @@
MD5 (Digest-DMAC-1.1.4.tar.gz) = 78ccdeb5377962d86d852d14c5b23ab3
SHA256 (Digest-DMAC-1.1.4.tar.gz) = 7e491b738d2e7c299367ab42789aebb312e42cfda55dc673440dbf613eec0b48
SIZE (Digest-DMAC-1.1.4.tar.gz) = 10210

23
security/p5-Digest-DMAC/pkg-descr Normal file
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@ -0,0 +1,23 @@
This is Encrypted MAC (EMAC), formerly known as Double MAC (DMAC).
Unlike HMAC, which reuses an existing one-way hash function, such as
MD5, SHA-1 or RIPEMD-160, EMAC reuses an existing block cipher to
produce a secure message authentication code (MAC).
Using the block cipher, a message is encrypted in CBC mode. The last
block is taken as the MAC of the message. For fixed-length messages,
this method is provably secure. In reality, however, messages have
arbitrary lengths, and this method is not secure. To make secure MACs
for variable length messages, the last block is encrypted once again
with a different key. The security of this construction has been proved
in the paper, ``CBC MAC for Real-Time Data Sources'' by Erez Petrank
and Charles Rackoff. The security can be proved on the assumption that
the underlying block cipher is pseudo-random.
The performance and key-agility of EMAC are reasonable. EMAC is
preferable for short messages because the block length is smaller
compared to the schemes based on a hash function. EMAC is also chosen
as one of the NESSIE winners for Message Authentication Codes, along
with UMAC, TTMAC and HMAC. The current NESSIE specification chooses the
AES as block cipher.
WWW: http://search.cpan.org/dist/Digest-DMAC

5
security/p5-Digest-DMAC/pkg-plist Normal file
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@ -0,0 +1,5 @@
%%SITE_PERL%%/Digest/DMAC.pm
%%SITE_PERL%%/%%PERL_ARCH%%/auto/Digest/DMAC/.packlist
@dirrm %%SITE_PERL%%/%%PERL_ARCH%%/auto/Digest/DMAC/
@unexec rmdir %D/%%SITE_PERL%%/%%PERL_ARCH%%/auto/Digest/ 2>/dev/null || true
@unexec rmdir %D/%%SITE_PERL%%/Digest/ 2>/dev/null || true