com.tridion.crypto

Class Crypto

java.lang.Object

com.tridion.crypto.Crypto

public final class Crypto
extends Object

Generic cryptography implementation.

Author:

Jan van den Berg

Constructor Summary

Constructors

Constructor and Description
Crypto() Construct a Crypto instance with the default encryption provider.
Crypto(KeyProvider keyProvider) Construct a Crypto instance with the given encryption provider.

Method Summary

Modifier and Type	Method and Description
String	decrypt(String secret) Decrypts the provided secret.
static String	decryptIfNecessary(String value) Tries to decrypt the value if and only if this is necessary.
String	encrypt(String secret) Encrypt the provided secret.

Methods inherited from class java.lang.Object

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

Constructor Detail

Crypto

public Crypto()

Construct a Crypto instance with the default encryption provider.

Crypto

public Crypto(KeyProvider keyProvider)

Construct a Crypto instance with the given encryption provider.

Parameters:

keyProvider - The encryption provider to use.

Method Detail

encrypt

public String encrypt(String secret)
               throws GeneralSecurityException

Encrypt the provided secret.

Parameters:

secret - The password or other secret to encrypt.

Returns:

The encrypted version of the input.

Throws:

GeneralSecurityException - If something goes wrong with the encryption (wrong key size/algorithm/etc).

decrypt

public String decrypt(String secret)
               throws GeneralSecurityException

Decrypts the provided secret.

Parameters:

secret - The password or other secret to decrypt.

Returns:

The decrypted version of the input.

Throws:

GeneralSecurityException - If something goes wrong with the encryption (wrong key size/algorithm/etc).

decryptIfNecessary

public static String decryptIfNecessary(String value)
                                 throws GeneralSecurityException

Tries to decrypt the value if and only if this is necessary. This is, the value starts with ENCRYPTED_PREFIX and has at least one character after.

Parameters:

value - value to be processed.

Returns:

decrypted value.

Throws:

GeneralSecurityException - in case of decryption error.