argon2

package

v0.1.0 Latest Latest Go to latest Published: Jan 17, 2026 License: MIT Imports: 7 Imported by: 0

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Package argon2 contains the Argon2id hasher implementation.

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type Argon2idHasher struct {
	Memory      uint32
	Iterations  uint32
	Parallelism uint8
	SaltLength  uint32
	KeyLength   uint32
}

Argon2idHasher wraps parameterized Argon2id hashing operations.

func Default() *Argon2idHasher

Default returns an Argon2idHasher configured with library defaults.

func (a *Argon2idHasher) Hash(password []byte) (string, error)

Hash derives an Argon2id key and returns the PHC string.

func (a *Argon2idHasher) ID() string

ID reports the PHC algorithm identifier.

func (a *Argon2idHasher) NeedsRehash(encoded string) (bool, error)

NeedsRehash reports whether the encoded parameters diverge from the current configuration.

func (a *Argon2idHasher) Verify(password []byte, encoded string) (bool, error)

Verify recomputes the Argon2id hash and compares it in constant time.