List of usage examples for javax.crypto.spec IvParameterSpec IvParameterSpec
public IvParameterSpec(byte[] iv)
iv as the IV. From source file:com.haulmont.cuba.web.test.PasswordEncryptionTest.java
protected String decryptPassword(String password) { SecretKeySpec key = new SecretKeySpec(PASSWORD_KEY.getBytes(), "DES"); IvParameterSpec ivSpec = new IvParameterSpec(PASSWORD_KEY.getBytes()); String result;/*from w w w . java 2s.co m*/ try { Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, key, ivSpec); result = new String(cipher.doFinal(Hex.decodeHex(password.toCharArray()))); } catch (Exception e) { throw new RuntimeException(e); } return result; }
From source file:com.dasol.util.AES256Util.java
public String aesEncode(String str) throws java.io.UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException { Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding"); c.init(Cipher.ENCRYPT_MODE, keySpec, new IvParameterSpec(iv.getBytes())); byte[] encrypted = c.doFinal(str.getBytes("UTF-8")); String enStr = new String(Base64.encodeBase64(encrypted)); return enStr; }
From source file:org.craftercms.security.authentication.impl.CipheredAuthenticationCookie.java
/** * Encrypts the cookie values using the AES cipher and returns it as a Base 64 string. *///from w ww .j a va 2 s .c o m protected String encrypt(String rawValue) throws CrafterSecurityException { try { byte[] iv = generateIv(); Cipher cipher = Cipher.getInstance(CipheredAuthenticationCookieFactory.CIPHER_TRANSFORMATION); cipher.init(Cipher.ENCRYPT_MODE, encryptionKey, new IvParameterSpec(iv)); byte[] encryptedValue = cipher.doFinal(rawValue.getBytes("UTF-8")); // The IV can be sent in clear text, no security issue on that return Base64.encodeBase64String(encryptedValue) + COOKIE_SEP + Base64.encodeBase64String(iv); } catch (Exception e) { throw new CrafterSecurityException("Error while trying to encrypt cookie value " + rawValue, e); } }
From source file:com.scorpio4.util.io.IOStreamCrypto.java
public CipherInputStream decrypt(InputStream in) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidAlgorithmParameterException, InvalidKeyException { final SecretKey key = new SecretKeySpec(bytePassword, cipherSpec); final IvParameterSpec IV = new IvParameterSpec(ivBytes); final Cipher cipher = Cipher.getInstance(cipherTransformation); cipher.init(Cipher.DECRYPT_MODE, key, IV); return new CipherInputStream(new Base64InputStream(in), cipher); }
From source file:org.sonar.runner.impl.SaltedAesCryptor.java
public SaltedAesCryptor(String encKey) throws Exception { MessageDigest digest = MessageDigest.getInstance("MD5"); digest.update(encKey.getBytes("UTF-8")); System.arraycopy(digest.digest(), 0, keyBytes, 0, keyBytes.length); this.secretKeySpec = new SecretKeySpec(keyBytes, "AES"); byte[] iv = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; algorithmParameterSpec = new IvParameterSpec(iv); }
From source file:com.vmware.fdmsecprotomgmt.PasswdEncrypter.java
/** * Decrypt the encrypted value with provided key *//*from w w w . ja va2s. co m*/ public static String decrypt(String key, String encryptedValue) { String decryptedString = null; try { IvParameterSpec iv = new IvParameterSpec(INIT_VECTOR.getBytes("UTF-8")); SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING"); cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); decryptedString = new String(cipher.doFinal(Base64.decodeBase64(encryptedValue))); } catch (Exception ex) { System.out.println("Caught exception while decrypting string"); ex.printStackTrace(); } return decryptedString; }
From source file:org.nuclos.common.CryptUtil.java
public static String decryptAES(byte[] bytes, byte[] key) { if (key.length != 16) throw new IllegalArgumentException(WRONG_PASSLEN_MESSAGE); try {//from w ww .jav a2 s .c o m IvParameterSpec ivSpec = new IvParameterSpec(key); SecretKeySpec skeySpec = new SecretKeySpec(key, AES); Cipher cipher = Cipher.getInstance(AES_CBC_PAD); cipher.init(Cipher.DECRYPT_MODE, skeySpec, ivSpec); return new String(cipher.doFinal(bytes), "UTF-8"); } catch (Exception e) { throw new RuntimeException("decyption failure", e); } }
From source file:MainClass.java
public static IvParameterSpec createCtrIvForAES(int messageNumber, SecureRandom random) { byte[] ivBytes = new byte[16]; random.nextBytes(ivBytes);//from w w w . j av a 2 s. com ivBytes[0] = (byte) (messageNumber >> 24); ivBytes[1] = (byte) (messageNumber >> 16); ivBytes[2] = (byte) (messageNumber >> 8); ivBytes[3] = (byte) (messageNumber >> 0); for (int i = 0; i != 7; i++) { ivBytes[8 + i] = 0; } ivBytes[15] = 1; return new IvParameterSpec(ivBytes); }
From source file:com.github.sshw.crypt.EncryptionBean.java
public String encrypt(String message, String password) throws Exception { Cipher encrypt = Cipher.getInstance("AES/CBC/PKCS5Padding"); Key key = keyFromPassword(password); IvParameterSpec ivb = new IvParameterSpec(key.getEncoded()); encrypt.init(Cipher.ENCRYPT_MODE, key, ivb); byte[] cb = encrypt.doFinal(message.getBytes()); String c = Base64.encodeBase64URLSafeString(cb); return c;/* w w w . j a v a2 s .c o m*/ }
From source file:Main.java
static byte[] decryptJWE(String jwe, Key privRsaKey) { // Log.d("","decryptJWE"); try {// w w w .j av a 2s. c om // split jwe string StringTokenizer tokens = new StringTokenizer(jwe, "."); int count = tokens.countTokens(); // Log.d("","parts.length: "+count); if (count != 5) return null; String jweProtectedHeader64 = tokens.nextToken(); String jweEncrypted64 = tokens.nextToken(); String jweInitVector64 = tokens.nextToken(); String cryptedBytes64 = tokens.nextToken(); String auth_tag64 = tokens.nextToken(); // decrypt cek using private rsa key byte[] cek = decryptRsaB64(jweEncrypted64, privRsaKey); // check cek result byte array if (cek == null || cek.length == 0 || (cek.length % 2) != 0) return null; int keySize = cek.length / 2; Log.d("", "Decryption AES: " + keySize * 8); // build aes_key and hmac_key byte aes_key[] = new byte[keySize]; byte hmac_key[] = new byte[keySize]; System.arraycopy(cek, 0, hmac_key, 0, keySize); System.arraycopy(cek, keySize, aes_key, 0, keySize); // decode initialization vector byte[] iv_key = decodeB64(jweInitVector64); Log.d("", "hmac_key: " + bytesToHex(hmac_key)); Log.d("", "aes_key: " + bytesToHex(aes_key)); Log.d("", "iv_key: " + bytesToHex(iv_key)); // decrypt content using aes_key and iv_key byte[] cryptedBytes = decodeB64(cryptedBytes64); Cipher decrypt = Cipher.getInstance("AES/CBC/PKCS5Padding", "SC"); decrypt.init(Cipher.DECRYPT_MODE, new SecretKeySpec(aes_key, "AES"), new IvParameterSpec(iv_key)); byte[] decryptedBytes = decrypt.doFinal(cryptedBytes); Log.d("", "decryptedBytes:"); Log.d("", bytesToHex(decryptedBytes)); // validation verification byte[] aad = jweProtectedHeader64.getBytes(); long al = aad.length * 8; // concatenate aad, iv_key, cryptedBytes and al byte[] hmacData = new byte[aad.length + iv_key.length + cryptedBytes.length + 8]; int offset = 0; System.arraycopy(aad, offset, hmacData, 0, aad.length); offset += aad.length; System.arraycopy(iv_key, 0, hmacData, offset, iv_key.length); offset += iv_key.length; System.arraycopy(cryptedBytes, 0, hmacData, offset, cryptedBytes.length); offset += cryptedBytes.length; ByteBuffer buffer = ByteBuffer.allocate(8); buffer.putLong(al); System.arraycopy(buffer.array(), 0, hmacData, offset, 8); // compute hmac Mac hmac = Mac.getInstance("HmacSHA256", "SC"); hmac.init(new SecretKeySpec(hmac_key, "HmacSHA256")); byte[] hmacValue = hmac.doFinal(hmacData); // pick authentication tag byte[] authTag = Arrays.copyOf(hmacValue, 16); // validate authentication tag byte[] authTagRead = decodeB64(auth_tag64); for (int i = 0; i < 16; i++) { if (authTag[i] != authTagRead[i]) { Log.d("", "validation failed"); return decryptedBytes; } } Log.d("", "validation success"); // validation success return decryptedBytes; } catch (Exception e) { e.printStackTrace(); } return null; }