# Packages
Package acme provides an implementation of the Automatic Certificate Management Environment (ACME) spec.
Package argon2 implements the key derivation function Argon2.
Package bcrypt implements Provos and Mazières's bcrypt adaptive hashing algorithm.
Package blake2s implements the BLAKE2s hash algorithm defined by RFC 7693 and the extendable output function (XOF) BLAKE2Xs.
Package bn256 implements a particular bilinear group.
Package cast5 implements CAST5, as defined in RFC 2144.
Package chacha20poly1305 implements the ChaCha20-Poly1305 AEAD as specified in RFC 7539, and its extended nonce variant XChaCha20-Poly1305.
Package cryptobyte contains types that help with parsing and constructing length-prefixed, binary messages, including ASN.1 DER.
Package curve25519 provides an implementation of scalar multiplication on the elliptic curve known as curve25519.
No description provided by the author
Package md4 implements the MD4 hash algorithm as defined in RFC 1320.
No description provided by the author
Package ocsp parses OCSP responses as specified in RFC 2560.
Package openpgp implements high level operations on OpenPGP messages.
Package otr implements the Off The Record protocol as specified in http://www.cypherpunks.ca/otr/Protocol-v2-3.1.0.html.
Package pbkdf2 implements the key derivation function PBKDF2 as defined in RFC
2898 / PKCS #5 v2.0.
Package pkcs12 implements some of PKCS#12.
Package ripemd160 implements the RIPEMD-160 hash algorithm.
Package salsa20 implements the Salsa20 stream cipher as specified in https://cr.yp.to/snuffle/spec.pdf.
Package scrypt implements the scrypt key derivation function as defined in Colin Percival's paper "Stronger Key Derivation via Sequential Memory-Hard Functions" (https://www.tarsnap.com/scrypt/scrypt.pdf).
Package sha3 implements the SHA-3 fixed-output-length hash functions and the SHAKE variable-output-length hash functions defined by FIPS-202.
Package ssh implements an SSH client and server.
Package tea implements the TEA algorithm, as defined in Needham and Wheeler's 1994 technical report, “TEA, a Tiny Encryption Algorithm”.
Package twofish implements Bruce Schneier's Twofish encryption algorithm.
Package xtea implements XTEA encryption, as defined in Needham and Wheeler's 1997 technical report, "Tea extensions.".
Package xts implements the XTS cipher mode as specified in IEEE P1619/D16.