Open-source crypto library with a similar API for multiple languages.

• http://en.wikipedia.org/wiki/Cryptography
• http://en.wikipedia.org/wiki/Key_size
• http://en.wikipedia.org/wiki/Initialization_vector
• http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation
• http://en.wikipedia.org/wiki/Block_size_(cryptography)
• http://en.wikipedia.org/wiki/Padding_(cryptography)
• http://en.wikipedia.org/wiki/Salt_(cryptography)