Example usage for org.bouncycastle.crypto.generators PKCS12ParametersGenerator generateDerivedParameters

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.generators PKCS12ParametersGenerator generateDerivedParameters.

Prototype

public CipherParameters generateDerivedParameters(int keySize) 

Source Link

Document

Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.

Usage

From source file:GenTestDKs.java

License:Open Source License

private static void testKey(PKCS12ParametersGenerator pgen, int keyLen, int iterCount, String password,
        byte[] salt) {
    System.out.println("key len = " + keyLen + ", iter count = " + iterCount + ", password = \"" + password
            + "\", salt len = " + salt.length);

    char[] pwChars = password.toCharArray();
    byte[] pwBytes = PBEParametersGenerator.PKCS12PasswordToBytes(pwChars);

    pgen.init(pwBytes, salt, iterCount);
    KeyParameter kp = (KeyParameter) pgen.generateDerivedParameters(keyLen);
    printByteArray(kp.getKey());/*from   ww  w  .j  a  va2  s.c o m*/
}

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From source file:org.xmind.core.internal.security.BouncyCastleSecurityProvider.java

License:Open Source License

private BufferedBlockCipher createCipher(boolean encrypt, IEncryptionData encData, String password)
        throws CoreException {
    checkEncryptionData(encData);/*  ww w  . j  a  v a2  s.com*/

    // Create a parameter generator
    PKCS12ParametersGenerator paramGen = new PKCS12ParametersGenerator(new MD5Digest());

    // Get the password bytes
    byte[] pwBytes = password == null ? new byte[0]
            : PBEParametersGenerator.PKCS12PasswordToBytes(password.toCharArray());

    // Initialize the parameter generator with password bytes, 
    // salt and iteration counts
    paramGen.init(pwBytes, getSalt(encData), getIterationCount(encData));

    // Generate a parameter
    CipherParameters param = paramGen.generateDerivedParameters(128);

    // Create a block cipher
    BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()));

    // Initialize the block cipher
    cipher.init(encrypt, param);
    return cipher;
}

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