org.bouncycastle.crypto.general

Class KDF.ScryptParametersBuilder

java.lang.Object

org.bouncycastle.crypto.general.GeneralParameters<GeneralAlgorithm>

org.bouncycastle.crypto.general.KDF.ScryptParametersBuilder

All Implemented Interfaces:

Parameters

Enclosing class:

KDF

public static final class KDF.ScryptParametersBuilder
extends GeneralParameters<GeneralAlgorithm>

Parameters builder for the SCrypt key derivation function.

Method Summary

Modifier and Type	Method and Description
KDF.ScryptParameters	using(byte[] salt, int n, int r, int p, byte[] seed) Generate a key using the scrypt key derivation function.
KDF.ScryptParameters	using(byte[] salt, int n, int r, int p, PasswordConverter converter, char[] password) Generate a key using the scrypt key derivation function.

Methods inherited from class org.bouncycastle.crypto.general.GeneralParameters

getAlgorithm

Methods inherited from class java.lang.Object

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

Method Detail

using

public KDF.ScryptParameters using(byte[] salt,
                                  int n,
                                  int r,
                                  int p,
                                  byte[] seed)

Generate a key using the scrypt key derivation function.

Parameters:

salt - 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).

seed - the value feed into the PBKDF2 function.

Returns:

the generated key.

using

public KDF.ScryptParameters using(byte[] salt,
                                  int n,
                                  int r,
                                  int p,
                                  PasswordConverter converter,
                                  char[] password)

Generate a key using the scrypt key derivation function.

Parameters:

salt - 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).

converter - a converter to turn the password characters into the byte array for the seed.

password - a character string to use as a seed.

Returns:

the generated key.