ZF-12472: improve RSA functionality

Description

This would break BC but phpseclib's Crypt_RSA seems much more feature packed then the RSA implementation in ZF. PEAR's own Crypt_RSA has deprecated itself in favor of phpseclib's implementation.

Among other features phpseclib's Crypt_RSA supports... more key formats, key conversion, PSS signing and OAEP encryption.

Comments

This issue has been closed on Jira and moved to GitHub for issue tracking. To continue following the resolution of this issues, please visit: https://github.com/zendframework/zf1/issues/34