java.security.cert.Certificate - The Certificate Class
This section describes the certificate class: java.security.cert.Certificate, which represents a signed certificate of a public key.
In the previous chapter, I learned that the "keytool" command line tool can
be used to manage certificates stored in "keystore" files.
Now I want to learn how to use java.security.cert.Certificate and java.security.KeyStore
classes to manage certificates stored in "keystore" files.
java.security.cert.Certificate is an abstract class representing common features
of different implementations of different certificate types. Its main methods
- getEncoded() - Returns a byte array of the encoded form of this certificate.
The encoding format used depends on the certificate type. For "X.509" type of certificates,
the encoding format will be "ASN.1 DER".
- getPublicKey() - Returns the public key of signed in this certificate.
- getType() - Returns the type of this certificate.
- verify() - Verifies this certificate with the specified public key.
I am not sure why this method has no return value.
In JDK, there is a deprecated interface named as Certificate under a different package,
java.security.Certificate. To help the compiler to take the correct class definition,
I think I should use the full class name, java.security.cert.Certificate, in my Java programs.
Last update: 2014.
Table of Contents
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JDK (Java Development Kit)
Java Date-Time API
Date, Time and Calendar Classes
Date and Time Object and String Conversion
Number Object and Numeric String Conversion
Locales, Localization Methods and Resource Bundles
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Message Digest Algorithm Implementations in JDK
Private key and Public Key Pair Generation
PKCS#8/X.509 Private/Public Encoding Standards
Digital Signature Algorithm and Sample Program
"keytool" Commands and "keystore" Files
►KeyStore and Certificate Classes
►java.security.cert.Certificate - The Certificate Class
Using CertificateFactory Class to Read in Certificates
Reading and Writing Certificates in DER and RFC Formats
java.security.KeyStore - The 'keystore' Class
JcaKeyStoreTest.java - 'keystore' Class Test Program
Secret Key Generation and Management
Cipher - Encryption and Decryption
The SSL (Secure Socket Layer) Protocol
SSL Socket Communication Testing Programs
SSL Client Authentication
HTTPS (Hypertext Transfer Protocol Secure)
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