com.ibm.crypto.fips.provider

Class HmacSHA1KeyGenerator

java.lang.Object

javax.crypto.KeyGeneratorSpi

com.ibm.crypto.fips.provider.HmacSHA1KeyGenerator

public final class HmacSHA1KeyGenerator
extends javax.crypto.KeyGeneratorSpi

This class generates a secret key for use with the HMAC-SHA1 algorithm.

Constructor Summary

Constructors

Constructor and Description
HmacSHA1KeyGenerator() Verify the JCE framework in the constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected javax.crypto.SecretKey	engineGenerateKey() Generates an HMAC-SHA1 key.
protected void	engineInit(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random) Initializes this key generator with the specified parameter set and a user-provided source of randomness.
protected void	engineInit(int keysize, java.security.SecureRandom random) Initializes this key generator for a certain keysize, using the given source of randomness.
protected void	engineInit(java.security.SecureRandom random) Initializes this key generator.
protected javax.crypto.SecretKey	internalGenerateKey() Generates an HMAC-SHA1 key.
protected void	internalInit(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random) Initializes this key generator with the specified parameter set and a user-provided source of randomness.
protected void	internalInit(int keysize, java.security.SecureRandom random) Initializes this key generator for a certain keysize, using the given source of randomness.
protected void	internalInit(java.security.SecureRandom random) Initializes this key generator.

Methods inherited from class java.lang.Object

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

Constructor Detail

HmacSHA1KeyGenerator

public HmacSHA1KeyGenerator()

Verify the JCE framework in the constructor.

Throws:

java.lang.SecurityException - if fails to verify the JCE framework.

Method Detail

engineInit

protected void engineInit(java.security.SecureRandom random)

Initializes this key generator.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

random - the source of randomness for this generator

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

internalInit

protected void internalInit(java.security.SecureRandom random)

Initializes this key generator.

Parameters:

random - the source of randomness for this generator

engineInit

protected void engineInit(java.security.spec.AlgorithmParameterSpec params,
              java.security.SecureRandom random)
                   throws java.security.InvalidAlgorithmParameterException

Initializes this key generator with the specified parameter set and a user-provided source of randomness.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

params - the key generation parameters

random - the source of randomness for this key generator

Throws:

java.security.InvalidAlgorithmParameterException - if params is inappropriate for this key generator

internalInit

protected void internalInit(java.security.spec.AlgorithmParameterSpec params,
                java.security.SecureRandom random)
                     throws java.security.InvalidAlgorithmParameterException

Initializes this key generator with the specified parameter set and a user-provided source of randomness.

Parameters:

params - the key generation parameters

random - the source of randomness for this key generator

Throws:

java.security.InvalidAlgorithmParameterException - if params is inappropriate for this key generator

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

engineInit

protected void engineInit(int keysize,
              java.security.SecureRandom random)

Initializes this key generator for a certain keysize, using the given source of randomness.

Specified by:

engineInit in class javax.crypto.KeyGeneratorSpi

Parameters:

keysize - the keysize. This is an algorithm-specific metric specified in number of bits.

random - the source of randomness for this key generator

Throws:

FIPSRuntimeException - if SelfTest.isFipsRunnable returns false.

internalInit

protected void internalInit(int keysize,
                java.security.SecureRandom random)

Initializes this key generator for a certain keysize, using the given source of randomness.

Parameters:

keysize - the keysize. This is an algorithm-specific metric specified in number of bits.

random - the source of randomness for this key generator

engineGenerateKey

protected javax.crypto.SecretKey engineGenerateKey()

Generates an HMAC-SHA1 key.

Specified by:

engineGenerateKey in class javax.crypto.KeyGeneratorSpi

Returns:

the new HMAC-SHA1 key

internalGenerateKey

protected javax.crypto.SecretKey internalGenerateKey()

Generates an HMAC-SHA1 key.

Returns:

the new HMAC-SHA1 key