Example usage for org.bouncycastle.crypto.engines Salsa20Engine Salsa20Engine

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.engines Salsa20Engine Salsa20Engine.

Prototype

public Salsa20Engine() 

Source Link

Document

Creates a 20 round Salsa20 engine.

Usage

From source file:com.keepassdroid.crypto.PwStreamCipherFactory.java

License:Open Source License

private static StreamCipher getSalsa20(byte[] key) {
    // Build stream cipher key
    MessageDigest md;//from   w ww . ja  va 2  s .c  o m
    try {
        md = MessageDigest.getInstance("SHA-256");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
        throw new RuntimeException("SHA 256 not supported");
    }
    byte[] key32 = md.digest(key);

    KeyParameter keyParam = new KeyParameter(key32);
    ParametersWithIV ivParam = new ParametersWithIV(keyParam, SALSA_IV);

    StreamCipher cipher = new Salsa20Engine();
    cipher.init(true, ivParam);

    return cipher;
}

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From source file:org.cryptacular.spec.StreamCipherSpec.java

License:Open Source License

@Override
public StreamCipher newInstance() {
    StreamCipher cipher;//from   w w  w .java 2  s . c o  m
    if ("Grainv1".equalsIgnoreCase(algorithm) || "Grain-v1".equalsIgnoreCase(algorithm)) {
        cipher = new ISAACEngine();
    } else if ("Grain128".equalsIgnoreCase(algorithm) || "Grain-128".equalsIgnoreCase(algorithm)) {
        cipher = new Grain128Engine();
    } else if ("ISAAC".equalsIgnoreCase(algorithm)) {
        cipher = new ISAACEngine();
    } else if ("HC128".equalsIgnoreCase(algorithm)) {
        cipher = new HC128Engine();
    } else if ("HC256".equalsIgnoreCase(algorithm)) {
        cipher = new HC256Engine();
    } else if ("RC4".equalsIgnoreCase(algorithm)) {
        cipher = new RC4Engine();
    } else if ("Salsa20".equalsIgnoreCase(algorithm)) {
        cipher = new Salsa20Engine();
    } else if ("VMPC".equalsIgnoreCase(algorithm)) {
        cipher = new VMPCEngine();
    } else {
        throw new IllegalStateException("Unsupported cipher algorithm " + algorithm);
    }
    return cipher;
}

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