Crypt::RSA is a pure-perl, cleanroom implementation of the RSA public-key cryptosystem. It uses Math::Pari, a perl interface to the blazingly fast PARI library, for big integer arithmetic and number theoretic computations. Crypt::RSA provides arbitrary size key-pair generation, plaintext-aware encryption (OAEP) and digital signatures with appendix (PSS). For compatibility with SSLv3, RSAREF2, PGP and other applications that follow the PKCS #1 v1.5 standard, it also provides PKCS #1 v1.5 encryption and signatures.
WWW: http://search.cpan.org/dist/Crypt-RSA/
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