Java KeyFactory.generatePrivate - 12 examples found. These are the top rated real world Java examples of KeyFactory.generatePrivate extracted from open source projects. You can rate examples to help us improve the quality of examples. I have pub/private keys generated already KeyPairGenerator keyPairGenerator is going to createa key pair, but in my case I alrady have it and then further want to use them for signign.

• Java Keyfactory To Generate Public Keys In Florida
• Java Keyfactory To Generate Public Keys Download
• Java Keyfactory To Generate Public Keys Pdf

• Java provides KeyGenerator class this class is used to generate secret keys and objects of this class are reusable. To generate keys using the KeyGenerator class follow the steps given below. Step 1: Create a KeyGenerator object. The KeyGenerator class provides getInstance method which accepts a String variable representing the required key-generating algorithm and returns a KeyGenerator.
• However, the keys have more methods that relate to the PKCS#11 standard attributes. The KeyFactory class can be used to generate a DSA Private PKCS#11 key from a DSAPrivateKeySpec or a PKCS11KeySpec. The KeyFactory can also be used to generate a DSA public key from a DSAPublicKeySpec, an X509EncodedKeySpec, or a PKCS11KeySpec.
• Now the byte array encKey contains the encoded public key bytes. You can use a KeyFactory class in order to instantiate a DSA public key from its encoding. The KeyFactory class provides conversions between opaque keys (of type Key) and key specifications, which are transparent representations of the underlying key material.With an opaque key you can obtain the algorithm name, format name,.
• A public key. This interface contains no methods or constants. It merely serves to group (and provide type safety for) all public key interfaces. Note: The specialized public key interfaces extend this interface. See, for example, the DSAPublicKey interface in java.security.interfaces.
• The generatePublic method of java.security.KeyFactory class is used to generate a public key object from the provided key specification (key material). Syntax: public final PublicKey generatePublic(KeySpec keySpec) throws InvalidKeySpecException.

• Class

Class KeyFactory

• • java.security.KeyFactory

• 
  
  Key factories are used to convert keys (opaque cryptographic keys of type Key) into key specifications (transparent representations of the underlying key material), and vice versa.

  Key factories are bi-directional. That is, they allow you to build an opaque key object from a given key specification (key material), or to retrieve the underlying key material of a key object in a suitable format.

  Multiple compatible key specifications may exist for the same key. For example, a DSA public key may be specified using DSAPublicKeySpec or X509EncodedKeySpec. A key factory can be used to translate between compatible key specifications.

  Kaspersky internet security 2016 key generator free 365 days of positive affirmations. It blocks all software that was automatically installed on your PC. It takes less time to scan whole PC, storage devices, digital devices, SD Cards, and USB. It removes all threats files and malicious apps.

  The following is an example of how to use a key factory in order to instantiate a DSA public key from its encoding. Assume Alice has received a digital signature from Bob. Bob also sent her his public key (in encoded format) to verify his signature. Alice then performs the following actions:

  Every implementation of the Java platform is required to support the following standard KeyFactory algorithms:

  • DiffieHellman
  • DSA
  • RSA

  These algorithms are described in the KeyFactory section of the Java Cryptography Architecture Standard Algorithm Name Documentation. Consult the release documentation for your implementation to see if any other algorithms are supported.

  Since:

  1.2

  See Also:

  Key, PublicKey, PrivateKey, KeySpec, DSAPublicKeySpec, X509EncodedKeySpec

• • Constructor Summary

    Constructors

    Modifier	Constructor and Description
    protected	KeyFactory(KeyFactorySpi keyFacSpi, Provider provider, String algorithm)

  • Method Summary

    Methods

    Modifier and Type	Method and Description
    PrivateKey	generatePrivate(KeySpec keySpec) Generates a private key object from the provided key specification (key material).
    PublicKey	generatePublic(KeySpec keySpec) Generates a public key object from the provided key specification (key material).
    String	getAlgorithm() Gets the name of the algorithm associated with this KeyFactory.
    static KeyFactory	getInstance(String algorithm) Returns a KeyFactory object that converts public/private keys of the specified algorithm.
    static KeyFactory	getInstance(String algorithm, Provider provider) Returns a KeyFactory object that converts public/private keys of the specified algorithm.
    static KeyFactory	getInstance(String algorithm, String provider) Returns a KeyFactory object that converts public/private keys of the specified algorithm.
    <T extends KeySpec> T	getKeySpec(Key key, Class<T> keySpec) Returns a specification (key material) of the given key object.
    Provider	getProvider()
    Key	translateKey(Key key) Translates a key object, whose provider may be unknown or potentially untrusted, into a corresponding key object of this key factory.

    • Methods inherited from class java.lang.Object

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

• • Constructor Detail

    • KeyFactory

      Parameters:

      keyFacSpi - the delegate

      provider - the provider

      algorithm - the name of the algorithm to associate with this KeyFactory

  • Method Detail

    • getInstance

      Returns a KeyFactory object that converts public/private keys of the specified algorithm.

      This method traverses the list of registered security Providers, starting with the most preferred Provider. A new KeyFactory object encapsulating the KeyFactorySpi implementation from the first Provider that supports the specified algorithm is returned.

      Note that the list of registered providers may be retrieved via the Security.getProviders() method.

      Parameters:

      algorithm - the name of the requested key algorithm. See the KeyFactory section in the Java Cryptography Architecture Standard Algorithm Name Documentation for information about standard algorithm names.

      Returns:

      the new KeyFactory object.

      Throws:

      NoSuchAlgorithmException - if no Provider supports a KeyFactorySpi implementation for the specified algorithm.

      See Also:

      Provider

    • getInstance

      Returns a KeyFactory object that converts public/private keys of the specified algorithm.

      A new KeyFactory object encapsulating the KeyFactorySpi implementation from the specified provider is returned. The specified provider must be registered in the security provider list.

      Note that the list of registered providers may be retrieved via the Security.getProviders() method.

      Parameters:

      algorithm - the name of the requested key algorithm. See the KeyFactory section in the Java Cryptography Architecture Standard Algorithm Name Documentation for information about standard algorithm names.

      provider - the name of the provider.

      Returns:

      the new KeyFactory object.

      Throws:

      NoSuchAlgorithmException - if a KeyFactorySpi implementation for the specified algorithm is not available from the specified provider.

      NoSuchProviderException - if the specified provider is not registered in the security provider list.

      IllegalArgumentException - if the provider name is null or empty.

      See Also:

      Provider

    • getInstance

      Returns a KeyFactory object that converts public/private keys of the specified algorithm.

      A new KeyFactory object encapsulating the KeyFactorySpi implementation from the specified Provider object is returned. Note that the specified Provider object does not have to be registered in the provider list.

      Parameters:

      algorithm - the name of the requested key algorithm. See the KeyFactory section in the Java Cryptography Architecture Standard Algorithm Name Documentation for information about standard algorithm names.

      provider - the provider.

      Returns:

      the new KeyFactory object.

      Throws:

      NoSuchAlgorithmException - if a KeyFactorySpi implementation for the specified algorithm is not available from the specified Provider object.

      IllegalArgumentException - if the specified provider is null.

      Since:

      1.4

      See Also:

      Provider

    • getProvider

      Returns:

      the provider of this key factory object

    • getAlgorithm

      Gets the name of the algorithm associated with this KeyFactory.

      Returns:

      the name of the algorithm associated with this KeyFactory

    • generatePublic

      Generates a public key object from the provided key specification (key material).

      Parameters:

      keySpec - the specification (key material) of the public key.

      Returns:

      the public key.

      Throws:

      InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a public key.

    • generatePrivate

      Generates a private key object from the provided key specification (key material).

      Parameters:

      keySpec - the specification (key material) of the private key.

      Returns:

      the private key.

      Throws:

      InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a private key.

    • getKeySpec

      Returns a specification (key material) of the given key object. keySpec identifies the specification class in which the key material should be returned. It could, for example, be DSAPublicKeySpec.class, to indicate that the key material should be returned in an instance of the DSAPublicKeySpec class.

      Parameters:

      key - the key.

      keySpec - the specification class in which the key material should be returned.

      Returns:

      the underlying key specification (key material) in an instance of the requested specification class.

      Throws:

      InvalidKeySpecException - if the requested key specification is inappropriate for the given key, or the given key cannot be processed (e.g., the given key has an unrecognized algorithm or format).

    • translateKey

      Translates a key object, whose provider may be unknown or potentially untrusted, into a corresponding key object of this key factory.

      Parameters:

      key - the key whose provider is unknown or untrusted.

      Returns:

      the translated key.

      Throws:

      InvalidKeyException - if the given key cannot be processed by this key factory.

• Class

• Summary:
• Nested
• Field
• Constr

Java Keyfactory To Generate Public Keys In Florida

• Detail:
• Field
• Constr

Java Keyfactory To Generate Public Keys Download

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2018, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

Java Keyfactory To Generate Public Keys Pdf

Scripting on this page tracks web page traffic, but does not change the content in any way.