package org.jboss.resteasy.jose.jwe.crypto;
import org.jboss.resteasy.jose.i18n.Messages;
/**
* The cryptographic parts of a JSON Web Encryption (JWE) object. This class is
* an immutable simple wrapper for returning the cipher text, initialisation
* vector (IV), encrypted key and authentication tag
* implementations.
*
* @author Vladimir Dzhuvinov
* @version $version$ (2012-05-05)
*/
public final class JWECryptoParts
{
/**
* The encrypted key (optional).
*/
private final String encryptedKey;
/**
* The initialisation vector (optional).
*/
private final String iv;
/**
* The cipher text.
*/
private final String cipherText;
/**
* The authentication tag (optional).
*/
private final String authenticationTag;
/**
* Creates a new cryptograhic JWE parts instance.
*
* @param encryptedKey The encrypted key, {@code null} if not
* required by the encryption algorithm.
* @param iv The initialisation vector (IV),
* {@code null} if not required by the
* encryption algorithm.
* @param cipherText The cipher text. Must not be {@code null}.
* @param authenticationTag The authentication tag, {@code null} if the
* JWE algorithm provides built-in integrity
* check.
*/
public JWECryptoParts(final String encryptedKey,
final String iv,
final String cipherText,
final String authenticationTag
) {
this.encryptedKey = encryptedKey;
this.iv = iv;
if (cipherText == null) {
throw new IllegalArgumentException(Messages.MESSAGES.cipherTextMustNotBeNull());
}
this.cipherText = cipherText;
this.authenticationTag = authenticationTag;
}
/**
* Gets the encrypted key.
*
* @return The encrypted key, {@code null} if not required by
* the JWE algorithm.
*/
public String getEncryptedKey() {
return encryptedKey;
}
/**
* Gets the initialisation vector (IV).
*
* @return The initialisation vector (IV), {@code null} if not required
* by the JWE algorithm.
*/
public String getInitializationVector() {
return iv;
}
/**
* Gets the cipher text.
*
* @return The cipher text.
*/
public String getCipherText() {
return cipherText;
}
/**
* Gets the authentication tag.
*
* @return The authentication tag, {@code null} if the encryption
* algorithm provides built-in integrity checking.
*/
public String getAuthenticationTag() {
return authenticationTag;
}
}