Developer's toolkit of fast, efficient symmetrical cryptographic functions. Provides the major symmetrical block cipher functions (AES, 3DES, DES and Blowfish), stream ciphers (ChaCha20, Salsa20, Arcfour), cryptographic hash functions (SHA-1, SHA-2, SHA-3, MD5, RIPEMD-160), HMAC, CMAC, KMAC, Poly1305, AES-GCM authenticated encryption, password-based key derivation, key wrapping, secure random numbers, and more.