Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

crypto

package

Go to main page

Versions in this module

v2

v2.11.0

Apr 27, 2026

Changes in this version

+ const AESKeySize

+ const NonceSize

+ const PairingKeySize

+ const SessionSaltSize

+ var ErrCounterExhausted = errors.New("counter exhausted: rotate session keys")

+ var ErrInvalidPairingKey = errors.New("pairing key must be 32 bytes")

+ var ErrInvalidPakeMessage = errors.New("invalid PAKE message")

+ var ErrInvalidSessionSalt = errors.New("session salt must be 16 bytes")

+ func DecodePakeMessage(wire []byte) ([]byte, error)

+ func Decrypt(gcm cipher.AEAD, nonceBase []byte, counter uint64, ciphertext, aad []byte) ([]byte, error)

+ func EncodePakeMessage(internal []byte) ([]byte, error)

+ func Encrypt(gcm cipher.AEAD, nonceBase []byte, counter uint64, plaintext, aad []byte) ([]byte, error)

+ func NewAEAD(key []byte) (cipher.AEAD, error)

+ type PakeMessage struct

+ Role int

+ UX string

+ UY string

+ VX string

+ VY string

+ XX string

+ XY string

+ YX string

+ YY string

+ type SessionKeys struct

+ C2SKey []byte

+ C2SNonce []byte

+ S2CKey []byte

+ S2CNonce []byte

+ func DeriveSessionKeys(pairingKey, sessionSalt []byte) (*SessionKeys, error)

v2.11.0-beta4

Apr 27, 2026

v2.11.0-beta3

Apr 25, 2026

v2.11.0-beta2

Apr 19, 2026

v2.11.0-beta1

Apr 16, 2026