org.bouncycastle.crypto.generators

Class SCrypt

java.lang.Object

org.bouncycastle.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 RFC 7914 - The scrypt Password-Based Key Derivation Function

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

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.