OpenJDK 27 · com.sun.crypto.provider.HmacSHA1KeyGenerator

Modifier and Type	Field and Description
private int	keysize
private SecureRandom	random

Access	Constructor and Description
public	HmacSHA1KeyGenerator() Empty constructor

Method Summary

Modifier and Type	Method and Description
protected SecretKey	Returns: the new HMAC-SHA1 key engineGenerateKey() Implements abstract javax.crypto.KeyGeneratorSpi.engineGenerateKey. Generates an HMAC-SHA1 key.
protected void	engineInit(SecureRandom the source of randomness for this generator random) Implements abstract javax.crypto.KeyGeneratorSpi.engineInit. Initializes this key generator.
protected void	engineInit(AlgorithmParameterSpec the key generation parameters params, SecureRandom the source of randomness for this key generator random) Implements abstract javax.crypto.KeyGeneratorSpi.engineInit. Initializes this key generator with the specified parameter set and a user-provided source of randomness.
protected void	engineInit(int the keysize. This is an algorithm-specific metric specified in number of bits. keysize, SecureRandom the source of randomness for this key generator random) Implements abstract javax.crypto.KeyGeneratorSpi.engineInit. Initializes this key generator for a certain keysize, using the given source of randomness.

keysize	back to summary
private int keysize

random	back to summary
private SecureRandom random

HmacSHA1KeyGenerator	back to summary
public HmacSHA1KeyGenerator() Empty constructor

engineGenerateKey	back to summary
protected SecretKey engineGenerateKey() Implements abstract javax.crypto.KeyGeneratorSpi.engineGenerateKey. Generates an HMAC-SHA1 key. Returns:SecretKey the new HMAC-SHA1 key

engineGenerateKey

protected SecretKey engineGenerateKey()

Generates an HMAC-SHA1 key.

engineInit	back to summary
protected void engineInit(SecureRandom random) Implements abstract javax.crypto.KeyGeneratorSpi.engineInit. Initializes this key generator. Parameters random:SecureRandom the source of randomness for this generator

engineInit

protected void engineInit(SecureRandom random)

Initializes this key generator.

Parameters

engineInit back to summary

engineInit	back to summary
protected void engineInit(AlgorithmParameterSpec params, SecureRandom random) throws InvalidAlgorithmParameterException Implements abstract javax.crypto.KeyGeneratorSpi.engineInit. Initializes this key generator with the specified parameter set and a user-provided source of randomness. Parameters params:AlgorithmParameterSpec the key generation parameters random:SecureRandom the source of randomness for this key generator Exceptions InvalidAlgorithmParameterException: if `params` is inappropriate for this key generator

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

Parameters

Exceptions

InvalidAlgorithmParameterException:: if params is inappropriate for this key generator

engineInit	back to summary
protected void engineInit(int keysize, SecureRandom random) Implements abstract javax.crypto.KeyGeneratorSpi.engineInit. Initializes this key generator for a certain keysize, using the given source of randomness. Parameters keysize:int the keysize. This is an algorithm-specific metric specified in number of bits. random:SecureRandom the source of randomness for this key generator

engineInit

protected void engineInit(int keysize, SecureRandom random)

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

Parameters

keysize:int: the keysize. This is an algorithm-specific metric specified in number of bits.
random:SecureRandom: the source of randomness for this key generator