org.bouncycastle.crypto.generators

Class OpenSSLPBEParametersGenerator

public class OpenSSLPBEParametersGenerator extends PBEParametersGenerator

Generator for PBE derived keys and ivs as usd by OpenSSL.

The scheme is a simple extension of PKCS 5 V2.0 Scheme 1 using MD5 with an iteration count of 1.

Constructor Summary
OpenSSLPBEParametersGenerator()
Construct a OpenSSL Parameters generator.
Method Summary
CipherParametersgenerateDerivedMacParameters(int keySize)
Generate a key parameter for use with a MAC derived from the password, salt, and iteration count we are currently initialised with.
CipherParametersgenerateDerivedParameters(int keySize)
Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.
CipherParametersgenerateDerivedParameters(int keySize, int ivSize)
Generate a key with initialisation vector parameter derived from the password, salt, and iteration count we are currently initialised with.
voidinit(byte[] password, byte[] salt)
Initialise - note the iteration count for this algorithm is fixed at 1.

Constructor Detail

OpenSSLPBEParametersGenerator

public OpenSSLPBEParametersGenerator()
Construct a OpenSSL Parameters generator.

Method Detail

generateDerivedMacParameters

public CipherParameters generateDerivedMacParameters(int keySize)
Generate a key parameter for use with a MAC derived from the password, salt, and iteration count we are currently initialised with.

Parameters: keySize the size of the key we want (in bits)

Returns: a KeyParameter object.

Throws: IllegalArgumentException if the key length larger than the base hash size.

generateDerivedParameters

public CipherParameters generateDerivedParameters(int keySize)
Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.

Parameters: keySize the size of the key we want (in bits)

Returns: a KeyParameter object.

Throws: IllegalArgumentException if the key length larger than the base hash size.

generateDerivedParameters

public CipherParameters generateDerivedParameters(int keySize, int ivSize)
Generate a key with initialisation vector parameter derived from the password, salt, and iteration count we are currently initialised with.

Parameters: keySize the size of the key we want (in bits) ivSize the size of the iv we want (in bits)

Returns: a ParametersWithIV object.

Throws: IllegalArgumentException if keySize + ivSize is larger than the base hash size.

init

public void init(byte[] password, byte[] salt)
Initialise - note the iteration count for this algorithm is fixed at 1.

Parameters: password password to use. salt salt to use.