Java Language Tutorial => SealedObject (javax.crypto.SealedObject)

Example

This class enables a programmer to create an object and protect its confidentiality with a cryptographic algorithm.

Given any Serializable object, one can create a SealedObject that encapsulates the original object, in serialized format (i.e., a "deep copy"), and seals (encrypts) its serialized contents, using a cryptographic algorithm such as AES, DES, to protect its confidentiality. The encrypted content can later be decrypted (with the corresponding algorithm using the correct decryption key) and de-serialized, yielding the original object.

Serializable obj = new String("John");
// Generate key
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128);
SecretKey aesKey = kgen.generateKey();
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, aesKey);
SealedObject sealedObject = new SealedObject(obj, cipher);
System.out.println("sealedObject-" + sealedObject);
System.out.println("sealedObject Data-" + sealedObject.getObject(aesKey));

PDF - Download Java Language for free

Previous Next

Java Language

Fastest Entity Framework Extensions

Example

Got any Java Language Question?

Java Language

Java Language Secure objects SealedObject (javax.crypto.SealedObject)

Fastest Entity Framework Extensions

Example

Got any Java Language Question?