Example usage for javax.crypto.spec SecretKeySpec SecretKeySpec

Introduction

In this page you can find the example usage for javax.crypto.spec SecretKeySpec SecretKeySpec.

Prototype

public SecretKeySpec(byte[] key, String algorithm)

Source Link

Document

Constructs a secret key from the given byte array.

Usage

From source file:cl.niclabs.tscrypto.common.messages.EncryptedData.java

/**
 * Returns a decrypted version of the included data
 * @return/*from   w  w  w.  j a  va2s.  co m*/
 * @throws NoSuchAlgorithmException
 * @throws NoSuchPaddingException
 * @throws InvalidKeyException
 * @throws IllegalBlockSizeException
 * @throws BadPaddingException
 */
public byte[] decrypt() throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
        IllegalBlockSizeException, BadPaddingException {

    byte[] plainAESKey = KeyChain.getInstance().decrypt(rsaKeyAlias, encryptedKey);
    SecretKeySpec skeySpec = new SecretKeySpec(plainAESKey, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, skeySpec);
    return cipher.doFinal(Base64.decodeBase64(encryptedData));
}