SHA2 256 in PERL?

[styptic]

I trying to learn PERL and am hacking together a program. My project is to verify someone elses password process, but in PERL.

They created some keys, they are into elliptical curve cryptography and ECDSA, so I assume they are probably using SHA2 algorithms in their password generation process. I tried to install Digest::SHA2 but it's buggy and won't install.

What other options are there to get SHA2 for PERL?

[ah7013]

Maybe Digest::SHA::PurePerl?

Digest::SHA::PurePerl is a complete implementation of the NIST Secure Hash Standard. It gives Perl programmers a convenient way to calculate SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, and SHA-512/256 message digests. The module can handle all types of input, including partial-byte data.

[styptic]

The three SHA algorithms are structured differently and are distinguished as SHA-0, SHA-1, and SHA-2. SHA-1 is very similar to SHA-0, but corrects an error in the original SHA hash specification that led to significant weaknesses. The SHA-0 algorithm was not adopted by many applications. SHA-2 on the other hand significantly differs from the SHA-1 hash function.

A new hash standard, SHA-3, is currently under development — an ongoing NIST hash function competition is scheduled to end with the selection of a winning function in 2012.

hxxp://en.wikipedia.org/wiki/SHA-1

Digest::SHA::PurePerl and Digest::SHA, gives Perl programmers a convenient way to calculate SHA-1 (hashes, which are) SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, and SHA-512/256 message digests.

Bracket info added.
hxxp://search.cpan.org/~mshelor/Digest-SHA-PurePerl-5.71/lib/Digest/SHA/PurePerl.pm

[ah7013]

I think Digest::SHA::PurePerl and Digest::SHA support both SHA-1 and SHA-2 (i.e. SHA-224, SHA-256, SHA-384 and SHA-512). Digest::SHA2 got deprecated in favor of Digest::SHA.

[styptic]

I see, it is my misunderstanding.
SHA-1 is 160-bits only while SHA-2 is everyhting from 224-bits and above.