Scrypt class

This is an implementation of Password Based Key Derivation Algorithm, scrypt derived from RFC-7914, which internally uses PBKDF2.

The function derives one or more secret keys from a secret string. It is based on memory-hard functions, which offer added protection against attacks using custom hardware.

The strength of the generated password using scrypt depends on the CPU/Memory cost, block size and parallelism parameters. Poor parameter choices can be harmful for security; for example, if you tune the parameters so that memory use is reduced to small amounts that will affect the properties of the algorithm.

Inheritance

Constructors

Scrypt.new({List<int>? salt, required int cost, int blockSize = 8, int parallelism = 1, int derivedKeyLength = 64})
Creates an Scrypt instance with a sink for MAC generation.
factory
Scrypt.fromSecurity(ScryptSecurity security, {List<int>? salt, int derivedKeyLength = 64})
Creates an Scrypt instance from ScryptSecurity parameter.
factory

Properties

blockSize → int
Block size parameter (r)
final
cost → int
CPU/Memory cost parameter (N)
final
derivedKeyLength → int
The length of derived key in bytes
final
hashCode → int
The hash code for this object.
no setterinherited
name → String
The name of this algorithm
final
parallelism → int
Parallelization parameter (p)
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
salt → List<int>
The byte array containing salt
final

Methods

convert(List<int> password) → HashDigest
Generate a derived key using the scrypt algorithm.
override
hex(List<int> password) → String
Returns the derived key in hexadecimal.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
string(String password, [Encoding? encoding]) → HashDigest
Process the password string and returns derived key as HashDigest.
inherited
toString() → String
A string representation of this object.
inherited
verify(List<int> derivedKey, List<int> password) → bool
Verify if the derivedKey was derived from the original password using the current parameters.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited