Examples with MessageDigest java.security.MessageDigest used on opensource projects

Example 26 with MessageDigest

use of java.security.MessageDigest 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 27 with MessageDigest

use of java.security.MessageDigest in project UltimateAndroid by cymcsg.

the class CryptographyUtils method getCryptography.

public static String getCryptography(String content, String encryptType) throws NoSuchAlgorithmException {
    try {
        MessageDigest messageDigest = MessageDigest.getInstance(encryptType);
        byte[] inputByteArray = content.getBytes();
        messageDigest.update(inputByteArray);
        byte[] resultByteArray = messageDigest.digest();
        return byteArrayToHex(resultByteArray);
    } catch (NoSuchAlgorithmException e) {
        throw e;
    }
}

Example 28 with MessageDigest

use of java.security.MessageDigest in project UltimateAndroid by cymcsg.

the class CryptographyUtils method getMd5FromFile.

/**
     * Get the MD5 of the file
     *
     * @param filePath
     * @return
     * @throws IOException
     * @throws NoSuchAlgorithmException
     */
public static String getMd5FromFile(String filePath) throws IOException, NoSuchAlgorithmException {
    int bufferSize = 256 * 1024;
    FileInputStream fileInputStream = null;
    DigestInputStream digestInputStream = null;
    try {
        MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        fileInputStream = new FileInputStream(filePath);
        digestInputStream = new DigestInputStream(fileInputStream, messageDigest);
        byte[] buffer = new byte[bufferSize];
        while (digestInputStream.read(buffer) > 0) ;
        messageDigest = digestInputStream.getMessageDigest();
        byte[] resultByteArray = messageDigest.digest();
        return byteArrayToHex(resultByteArray);
    } catch (NoSuchAlgorithmException e) {
        throw e;
    } finally {
        if (digestInputStream != null) {
            digestInputStream.close();
        }
        if (fileInputStream != null) {
            fileInputStream.close();
        }
    }
}

Example 29 with MessageDigest

use of java.security.MessageDigest in project UltimateAndroid by cymcsg.

the class CryptographyUtils method encryptAlgorithm.

public static byte[] encryptAlgorithm(byte[] data, String algorithm) {
    try {
        MessageDigest md = MessageDigest.getInstance(algorithm);
        md.update(data);
        return md.digest();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return new byte[0];
}

Example 30 with MessageDigest

use of java.security.MessageDigest in project hackpad by dropbox.

the class Main method getDigest.

private static byte[] getDigest(Object source) {
    byte[] bytes, digest = null;
    if (source != null) {
        if (source instanceof String) {
            try {
                bytes = ((String) source).getBytes("UTF-8");
            } catch (UnsupportedEncodingException ue) {
                bytes = ((String) source).getBytes();
            }
        } else {
            bytes = (byte[]) source;
        }
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            digest = md.digest(bytes);
        } catch (NoSuchAlgorithmException nsa) {
            // Should not happen
            throw new RuntimeException(nsa);
        }
    }
    return digest;
}