# Functions
IDKey derives a key from the password, salt, and cost parameters using Argon2id returning a byte slice of length keyLen that can be used as cryptographic key.
Key derives a key from the password, salt, and cost parameters using Argon2i returning a byte slice of length keyLen that can be used as cryptographic key.
NewIDKey returns an argon2 PBKDF backend by sync.Pool.
# Constants
The Argon2 version implemented by this package.