signal-cli/src/main/java/org/asamk/textsecure/Util.java

package org.asamk.textsecure;

import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

class Util {
    public static String getSecret(int size) {
        byte[] secret = getSecretBytes(size);
        return Base64.encodeBytes(secret);
    }

    public static byte[] getSecretBytes(int size) {
        byte[] secret = new byte[size];
        getSecureRandom().nextBytes(secret);
        return secret;
    }

    private static SecureRandom getSecureRandom() {
        try {
            return SecureRandom.getInstance("SHA1PRNG");
        } catch (NoSuchAlgorithmException e) {
            throw new AssertionError(e);
        }
    }
}