A new KeyGenerator object encapsulating the KeyGeneratorSpi implementation from the specified Provider object is returned. Returns: the new key getAlgorithm public final getAlgorithm Returns the algorithm name of this KeyGenerator object. Strength The length, in bits, of the modulus p. Parameters: msg - the detail message. If none of the installed providers supply an implementation of SecureRandom, a system-provided source of randomness is used. Note that the specified Provider object does not have to be registered in the provider list.
Returns the algorithm name of this KeyGenerator object. Client or Server Certificate Chain Authentication Type Standard Name Client Determined by the actual certificate used. In case the client does not explicitly initialize the KeyGenerator via a call to an init method , each provider must supply and document a default initialization. I'll come to the point why I'm speaking about these stuffs. Note that this class is abstract and extends from KeyPairGeneratorSpi for historical reasons. Initializes this KeyGenerator instance for the specified key size in bits using the specified randomness source. Parameters: algorithm - the standard name of the requested key algorithm.
Parameters: numBytes - the number of seed bytes to generate. Parameters: keysize - the keysize. Creating a KeyGenerator Instance Before you can use the Java KeyGenerator class you must create a KeyGenerator instance. Many applications have been deployed that contain significant security or performance problems because the wrong tool or algorithm was selected. These classes are called engine classes, and examples are the , , , , and classes.
If none of the installed providers supply an implementation of SecureRandom, a system-provided source of randomness will be used. Returns the provider of this KeyGenerator object. This method must only be called once the connection is established. If the default provider package provides an implementation of the requested key generator, an instance of KeyGenerator containing that implementation is returned. If the modulus size is not one of the above values, the Sun provider creates a new set of parameters. Returns: the new KeyGenerator object.
Note that the list of registered providers may be retrieved via the method. SecretKeyFactory Algorithms The following algorithm names can be specified when requesting an instance of SecretKeyFactory. Field Description Name The name by which the algorithm is known. Create KeyGenerator object using the getInstance method as shown below. Generating a key is done by calling the KeyGenerator generateKey method.
Instantiate this class as shown below. I'm suspecting whether this could be due to the problem that sufficient entropy is not reached. Except as noted, these classes create keys for which returns the standard algorithm name. Algorithm extensibility means that new algorithms that fit in one of the supported engine classes can be added easily. It supports Kerberos v5 authentication. It supports Kerberos v5 authentication. Parameters: cause - the cause which is saved for later retrieval by the method.
The returned SecureRandom object has not been seeded. Cipher Algorithm Padding The following names can be specified as the padding component in a when requesting an instance of Cipher. This method is functionally equivalent to. To add a new algorithm not specified here, you should first survey other people or companies supplying provider packages to see if they have already added that algorithm, and, if so, use the definitions they published, if available. The algorithm names in this section can be specified when generating an instance of KeyFactory. Parameters: algorithm - the standard name of the requested key algorithm. A new KeyGenerator object encapsulating the KeyGeneratorSpi implementation from the specified Provider object is returned.
Implementation interoperability means that various implementations can work with each other, use each other's keys, or verify each other's signatures. Parameters: algorithm - the standard string name of the algorithm. KeyPair Algorithm optional The keypair algorithm for this algorithm. Returns: the new SecureRandom object. To seed the returned object, call the setSeed method. A new KeyGenerator object encapsulating the KeyGeneratorSpi implementation from the first Provider that supports the specified algorithm is returned. Algorithm Name Description NoPadding No padding.
The algorithm name in this section can be specified when generating an instance of KeyManagerFactory. Throws: - if the given parameters are inappropriate for this key pair generator. Algorithm Name Description DiffieHellman Generates keypairs for the Diffie-Hellman KeyAgreement algorithm. For more information, see K. Returns: the algorithm name of this KeyGenerator object. Methods inherited from class java. Parameters: algorithm - the standard string name of the algorithm.