Examples with SecretKey javax.crypto.SecretKey used on opensource projects

Example 21 with SecretKey

use of javax.crypto.SecretKey in project Talon-for-Twitter by klinker24.

the class TwitterDMPicHelper method computeSignature.

private static String computeSignature(String baseString, String keyString) throws GeneralSecurityException, UnsupportedEncodingException {
    SecretKey secretKey = null;
    byte[] keyBytes = keyString.getBytes();
    secretKey = new SecretKeySpec(keyBytes, "HmacSHA1");
    Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(secretKey);
    byte[] text = baseString.getBytes();
    return new String(BASE64Encoder.encode(mac.doFinal(text))).trim();
}

Example 22 with SecretKey

use of javax.crypto.SecretKey in project Talon-for-Twitter by klinker24.

the class TwitterMultipleImageHelper method computeSignature.

private static String computeSignature(String baseString, String keyString) throws GeneralSecurityException, UnsupportedEncodingException {
    SecretKey secretKey = null;
    byte[] keyBytes = keyString.getBytes();
    secretKey = new SecretKeySpec(keyBytes, "HmacSHA1");
    Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(secretKey);
    byte[] text = baseString.getBytes();
    return new String(BASE64Encoder.encode(mac.doFinal(text))).trim();
}

Example 23 with SecretKey

use of javax.crypto.SecretKey in project android-pbe by nelenkov.

the class Crypto method deriveKeyPkcs12.

public static SecretKey deriveKeyPkcs12(byte[] salt, String password) {
    try {
        long start = System.currentTimeMillis();
        KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, ITERATION_COUNT, KEY_LENGTH);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(PKCS12_DERIVATION_ALGORITHM);
        SecretKey result = keyFactory.generateSecret(keySpec);
        long elapsed = System.currentTimeMillis() - start;
        Log.d(TAG, String.format("PKCS#12 key derivation took %d [ms].", elapsed));
        return result;
    } catch (GeneralSecurityException e) {
        throw new RuntimeException(e);
    }
}

Example 24 with SecretKey

use of javax.crypto.SecretKey in project android-pbe by nelenkov.

the class Crypto method deriveKeyPad.

// Illustration code only: don't use in production!
public static SecretKey deriveKeyPad(String password) {
    try {
        long start = System.currentTimeMillis();
        byte[] keyBytes = new byte[KEY_LENGTH / 8];
        // explicitly fill with zeros
        Arrays.fill(keyBytes, (byte) 0x0);
        // if password is shorter then key length, it will be zero-padded
        // to key length
        byte[] passwordBytes = password.getBytes("UTF-8");
        int length = passwordBytes.length < keyBytes.length ? passwordBytes.length : keyBytes.length;
        System.arraycopy(passwordBytes, 0, keyBytes, 0, length);
        SecretKey result = new SecretKeySpec(keyBytes, "AES");
        long elapsed = System.currentTimeMillis() - start;
        Log.d(TAG, String.format("Padding key derivation took %d [ms].", elapsed));
        return result;
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    }
}

Example 25 with SecretKey

use of javax.crypto.SecretKey in project android-pbe by nelenkov.

the class Crypto method deriveKeyPbkdf2.

public static SecretKey deriveKeyPbkdf2(byte[] salt, String password) {
    try {
        long start = System.currentTimeMillis();
        KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, ITERATION_COUNT, KEY_LENGTH);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(PBKDF2_DERIVATION_ALGORITHM);
        byte[] keyBytes = keyFactory.generateSecret(keySpec).getEncoded();
        Log.d(TAG, "key bytes: " + toHex(keyBytes));
        SecretKey result = new SecretKeySpec(keyBytes, "AES");
        long elapsed = System.currentTimeMillis() - start;
        Log.d(TAG, String.format("PBKDF2 key derivation took %d [ms].", elapsed));
        return result;
    } catch (GeneralSecurityException e) {
        throw new RuntimeException(e);
    }
}