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Source: libcrypt-dh-gmp-perl
Maintainer: Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>
Uploaders: gregor herrmann <gregoa@debian.org>,
Dominic Hargreaves <dom@earth.li>
Section: perl
Priority: optional
Build-Depends: debhelper (>= 8), perl (>= 5.10.1),
libdevel-checklib-perl,
libgmp-dev,
libtest-requires-perl,
perl (>= 5.14) | libextutils-parsexs-perl (>= 2.210000),
Standards-Version: 3.9.2
Vcs-Browser: http://anonscm.debian.org/gitweb/?p=pkg-perl/packages/libcrypt-dh-gmp-perl.git
Vcs-Git: git://git.debian.org/pkg-perl/packages/libcrypt-dh-gmp-perl.git
Homepage: http://search.cpan.org/dist/Crypt-DH-GMP/
Package: libcrypt-dh-gmp-perl
Architecture: any
Depends: ${misc:Depends}, ${perl:Depends}, ${shlibs:Depends},
perl (>= 5.10.1)
Description: Crypt::DH replacement that uses GMP directly
Crypt::DH::GMP is a (somewhat) portable replacement to Crypt::DH, implemented
mostly in C.
.
In the beginning, there was Crypt::DH. However, Crypt::DH suffers from a
couple of problems: GMP/Pari libraries are almost always required; Crypt::DH
additionally has Math::BigInt in between GMP. Instantiating an object
comes with a relatively high cost, and if you make many computations in one
go, your program will suffer dramatically because of this.
.
Crypt::DH::GMP attempts to alleviate these problems by providing a
Crypt::DH-compatible layer, which, instead of doing calculations via
Math::BigInt, directly works with libgmp in C.
.
This means that essentially 2 call stacks worth of expensive Perl method
calls are eliminated and also only load 1 (Crypt::DH::GMP) module instead of
3 (Crypt::DH + Math::BigInt + Math::BigInt::GMP) is needed.
.
These add up to a fairly significant increase in performance.
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