1. Java Cryptography
2. Java Cipher
3. Java MessageDigest
4. Java Mac
5. Java Signature
6. Java KeyGenerator
7. Java KeyPair
8. Java KeyPairGenerator
9. Java KeyStore
10. Java Keytool
11. Java Certificate
12. Java CertificateFactory
13. Java CertPath

• Accessing KeyPair Public Key
• Accessing the KeyPair Private Key

The Java KeyPair class (java.security.KeyPair represents an asymmetric key pair. In other words, a public key + private key pair. A KeyPair instance is typically used when performing asymmetric cryptography, like encrypting or signing data.

Obtaining a KeyPair Instance

You will normally obtain a KeyPair instance from a Java keystore or a Java KeyPairGenerator.

Accessing KeyPair Public Key

You can access the PublicKey of a KeyPair by calling its getPublic() method. Her is an example of obtaining the PublicKey from a KeyPair instance:

PublicKey publicKey = keyPair.getPublic();

Accessing the KeyPair Private Key

You can access the PrivateKey of a KeyPair by calling the getPrivate() method. Here is an example of obtaining the PrivateKey from a KeyPair instance:

PrivateKey privateKey = keyPair.getPrivate();