This package is a Go library for creating a unique hash value for arbitrary values in Go. This can be used to key values in a hash (for use in a map, set, etc.) that are complex. The most common use case is comparing two values without sending data across the network, caching values locally (de-dup), and so on.

GoPtLib is a library for writing Tor pluggable transports in Go.

Go-Bloom implements bloom filter using double hashing.

Package xxhash implements the 64-bit variant of xxHash (XXH64) as described at https://xxhash.com/.

This library is a JWT implementation that uses nkeys to digitally sign JWT tokens. Nkeys use Ed25519 to provide authentication of JWT claims.

The bsaes is a portable pure-Go constant time AES implementation based on the code from BearSSL. On appropriate systems, with a sufficiently recent Go runtime, it will transparently call crypto/aes when NewCipher is invoked.

Package pbkdf2 implements password-based key derivation using the PBKDF2 algorithm described in RFC 2898 and RFC 8018.

blake3 implements the BLAKE3 cryptographic hash function. In addition to the pure-Go implementation, this package also contains AVX-512 and AVX2 routines (generated by avo) that greatly increase performance for large inputs and outputs.

Package sha1cd implements collision detection based on the whitepaper Counter-cryptanalysis from Marc Stevens. The original ubc implementation was done by Marc Stevens and Dan Shumow, and can be found at: @urlhttps://github.com/cr-marcstevens/sha1collisiondetection,https://github.com/cr-marcstevens/sha1collisiondetection.

This package provides an optimized pure Go implementation of elliptic curve cryptography operations over the secp256k1 curve as well as data structures and functions for working with public and private secp256k1 keys as cpecified in the https://www.secg.org/sec2-v2.pdf standard.

In addition, sub packages are provided to produce, verify, parse, and serialize ECDSA signatures and EC-Schnorr-DCRv0 (a custom Schnorr-based signature scheme specific to Decred) signatures. See the README.md files in the relevant sub packages for more details about those aspects.

This package implements RFC 7512 - the PKCS #11 URI Scheme; and errata specifications.

The purpose of this package is to provide a version of arbitrary sized arithmetic, in a safer (i.e. constant-time) way, for cryptography.

This package provides a dictionary for TLS written in Go providing bidirectional mapping values to their names, plus enum convenience for values.

This package is an Ed25519 based public-key signature system that simplifies keys and seeds and performs signing and verification.

Package imohash implements a fast, constant-time hash for files. It is based atop murmurhash3 and uses file size and sample data to construct the hash.

This package implements file encryption according to the https://age-encryption.org/v1 specification. It features small explicit keys, no configuration options, and Unix-style composability. This package provides a command line interface (CLI) tools.

This package provides a drop-in replacement of the Golang standard encoding/base64 library.

Package shuffle provides primitives for shuffling slices and user-defined collections.

This package implements a functionality to convert keys between the PEM and JWK file formats.

This package provides ShāngMì 4 cipher suites implementation (GM SM2/3/4).

Main functions:

• SM2 national secret elliptic curve algorithm library

• SM3 national secret hash algorithm library

• SM4 national secret block cipher algorithm library

Package agent implements the ssh-agent protocol, and provides both a client and a server. The client can talk to a standard ssh-agent that uses UNIX sockets, and one could implement an alternative ssh-agent process using the sample server.

Multihash implementation in Go.

This native Go library manages secrets via the freedesktop.org Secret Service DBus interface.

Various cryptographic utilities used by IPFS