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@startuml kdf_dss
actor user
participant Pbkdf2 as kdf
participant NativeCrypto as nc
user -> kdf: new(hash, iterations, salt, length)
kdf--> user : Pbkdf2
user -> kdf: derive(password)
kdf--> nc : pbkdf2(password, hash, iterations, salt, length)
nc --> kdf: Uint8List(length)
kdf--> user : SecretKey
user -> kdf : verify(password, key)
kdf--> nc : pbkdf2(password, hash, iterations, salt, length)
nc --> kdf: Uint8List(length)
kdf--> user : bool
@enduml