Examples with IvParameterSpec javax.crypto.spec.IvParameterSpec used on opensource projects

Example 1 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project zeppelin by apache.

the class Authentication method decrypt.

private String decrypt(String value, String initVector) {
    LOG.debug("IV is {}, IV length is {}", initVector, initVector.length());
    if (StringUtils.isBlank(value) || StringUtils.isBlank(initVector)) {
        LOG.error("String to decode or salt is not provided");
        return StringUtils.EMPTY;
    }
    try {
        IvParameterSpec iv = generateIV(initVector);
        Key key = generateKey();
        Cipher cipher = Cipher.getInstance(CIPHER_MODE);
        cipher.init(Cipher.DECRYPT_MODE, key, iv);
        byte[] decryptedString = Base64.decodeBase64(toBytes(value));
        decryptedString = cipher.doFinal(decryptedString);
        return new String(decryptedString);
    } catch (GeneralSecurityException e) {
        LOG.error("Error when decrypting", e);
        return StringUtils.EMPTY;
    }
}

Example 2 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project UltimateAndroid by cymcsg.

the class TripleDES method decrypt.

/**
     * Decrypt the message with TripleDES
     *
     * @param message
     * @return
     * @throws Exception
     */
public static String decrypt(String message) throws Exception {
    if (message == null || message == "")
        return "";
    byte[] values = Base64decoding(message, 0);
    final MessageDigest md = MessageDigest.getInstance("SHA-1");
    final byte[] digestOfPassword = md.digest(token.getBytes("utf-8"));
    final byte[] keyBytes = copyOf(digestOfPassword, 24);
    for (int j = 0, k = 16; j < 8; ) {
        keyBytes[k++] = keyBytes[j++];
    }
    final SecretKey key = new SecretKeySpec(keyBytes, "DESede");
    String s1 = "12345678";
    byte[] bytes = s1.getBytes();
    final IvParameterSpec iv = new IvParameterSpec(bytes);
    final Cipher decipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");
    decipher.init(Cipher.DECRYPT_MODE, key, iv);
    final byte[] plainText = decipher.doFinal(values);
    return new String(plainText, "UTF-8");
}

Example 3 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project Openfire by igniterealtime.

the class K method A.

byte[] A(byte[] abyte0, int i, int j) {
    if (C == null)
        return abyte0;
    try {
        byte[] abyte1 = new byte[16];
        IvParameterSpec ivparameterspec = new IvParameterSpec(abyte1);
        Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
        if (E == Encryption.ENCRYPT)
            cipher.init(1, C, ivparameterspec);
        if (E == Encryption.DECRYPT)
            cipher.init(2, C, ivparameterspec);
        return cipher.doFinal(abyte0, i, j);
    } catch (NoSuchAlgorithmException nosuchalgorithmexception) {
        D.error(nosuchalgorithmexception.getMessage(), nosuchalgorithmexception);
    } catch (NoSuchPaddingException nosuchpaddingexception) {
        D.error(nosuchpaddingexception.getMessage(), nosuchpaddingexception);
    } catch (InvalidKeyException invalidkeyexception) {
        D.error(invalidkeyexception.getMessage(), invalidkeyexception);
    } catch (BadPaddingException badpaddingexception) {
        D.error(badpaddingexception.getMessage(), badpaddingexception);
    } catch (IllegalBlockSizeException illegalblocksizeexception) {
        D.error(illegalblocksizeexception.getMessage(), illegalblocksizeexception);
    } catch (InvalidAlgorithmParameterException invalidalgorithmparameterexception) {
        D.error(invalidalgorithmparameterexception.getMessage(), invalidalgorithmparameterexception);
    }
    return null;
}

Example 4 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project Signal-Android by WhisperSystems.

the class DecryptingPartInputStream method initializeCipher.

private Cipher initializeCipher(SecretKeySpec key) throws InvalidKeyException, InvalidAlgorithmParameterException, NoSuchAlgorithmException, NoSuchPaddingException, IOException {
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    IvParameterSpec iv = readIv(cipher.getBlockSize());
    cipher.init(Cipher.DECRYPT_MODE, key, iv);
    return cipher;
}

Example 5 with IvParameterSpec

use of javax.crypto.spec.IvParameterSpec in project remusic by aa112901.

the class AESTools method encrpty.

public static String encrpty(String paramString) {
    MessageDigest messageDigest = null;
    try {
        messageDigest = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    messageDigest.update(INPUT.getBytes());
    byte[] stringBytes = messageDigest.digest();
    StringBuilder stringBuilder = new StringBuilder(stringBytes.length * 2);
    for (int i = 0; i < stringBytes.length; i++) {
        stringBuilder.append(CHARS[((stringBytes[i] & 0xF0) >>> 4)]);
        stringBuilder.append(CHARS[(stringBytes[i] & 0xF)]);
    }
    String str = stringBuilder.toString();
    SecretKeySpec localSecretKeySpec = new SecretKeySpec(str.substring(str.length() / 2).getBytes(), "AES");
    Cipher localCipher;
    try {
        localCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        localCipher.init(1, localSecretKeySpec, new IvParameterSpec(IV.getBytes()));
        return URLEncoder.encode(new String(BytesHandler.getChars(localCipher.doFinal(paramString.getBytes()))), "utf-8");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (InvalidAlgorithmParameterException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    }
    return "";
}