org.bouncycastle.crypto

Interface PasswordBasedDeriver<T>

Type Parameters:

T - the parameters type for the deriver.

public interface PasswordBasedDeriver<T>

Base interface for a password based deriver of bytes for symmetric keys.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	PasswordBasedDeriver.KeyType The target key type we are trying to produce a key for.

Method Summary

Modifier and Type	Method and Description
byte[]	deriveKey(PasswordBasedDeriver.KeyType keyType, int keySizeInBytes) Derive a key of the given keySizeInBytes length.
byte[][]	deriveKeyAndIV(PasswordBasedDeriver.KeyType keyType, int keySizeInBytes, int ivSizeInBytes) Derive a key of the given keySizeInBytes length and an iv of ivSizeInBytes length.
T	getParameters() Return the parameters for this deriver.

Method Detail

getParameters

T getParameters()

Return the parameters for this deriver.

Returns:

the deriver's parameters.

deriveKey

byte[] deriveKey(PasswordBasedDeriver.KeyType keyType,
                 int keySizeInBytes)

Derive a key of the given keySizeInBytes length.

Parameters:

keyType - type of key to be calculated.

keySizeInBytes - the number of bytes to be produced.

Returns:

a byte array containing the raw key data.

deriveKeyAndIV

byte[][] deriveKeyAndIV(PasswordBasedDeriver.KeyType keyType,
                        int keySizeInBytes,
                        int ivSizeInBytes)

Derive a key of the given keySizeInBytes length and an iv of ivSizeInBytes length.

Parameters:

keyType - type of key to be calculated.

keySizeInBytes - the number of bytes to be produced.

ivSizeInBytes - the number of bytes to be produced.

Returns:

a 2 element byte[] array containing the raw key data in element 0, the iv in element 1.