org.spongycastle.crypto.generators

Class SCrypt

java.lang.Object

org.spongycastle.crypto.generators.SCrypt

public class SCrypt
extends java.lang.Object

Implementation of the scrypt a password-based key derivation function.

Scrypt was created by Colin Percival and is specified in draft-josefsson-scrypt-kd

Constructor Summary

Constructors

Constructor and Description
SCrypt()

Method Summary

Modifier and Type	Method and Description
static byte[]	generate(byte[] P, byte[] S, int N, int r, int p, int dkLen) Generate a key using the scrypt key derivation function.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SCrypt

public SCrypt()

Method Detail

generate

public static byte[] generate(byte[] P,
                              byte[] S,
                              int N,
                              int r,
                              int p,
                              int dkLen)

Generate a key using the scrypt key derivation function.

Parameters:

P - the bytes of the pass phrase.

S - the salt to use for this invocation.

N - CPU/Memory cost parameter. Must be larger than 1, a power of 2 and less than 2^(128 * r / 8).

r - the block size, must be >= 1.

p - Parallelization parameter. Must be a positive integer less than or equal to Integer.MAX_VALUE / (128 * r * 8).

dkLen - the length of the key to generate.

Returns:

the generated key.