Example usage for org.bouncycastle.asn1.pkcs PBES2Parameters getKeyDerivationFunc

Introduction

In this page you can find the example usage for org.bouncycastle.asn1.pkcs PBES2Parameters getKeyDerivationFunc.

Prototype

public KeyDerivationFunc getKeyDerivationFunc() 

Source Link

Usage

From source file:org.cryptacular.pbe.PBES2EncryptionScheme.java

License:Open Source License

/**
 * Creates a new instance with the given parameters.
 *
 * @param  params  PBES2 parameters describing the key derivation function and
 *                 encryption scheme./*  ww w. ja v a2  s .c o  m*/
 * @param  password  Password used to derive key.
 */
public PBES2EncryptionScheme(final PBES2Parameters params, final char[] password) {
    final PBKDF2Params kdfParams = PBKDF2Params.getInstance(params.getKeyDerivationFunc().getParameters());
    final byte[] salt = kdfParams.getSalt();
    final int iterations = kdfParams.getIterationCount().intValue();
    if (kdfParams.getKeyLength() != null) {
        keyLength = kdfParams.getKeyLength().intValue() * 8;
    }

    final PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init(PBEParametersGenerator.PKCS5PasswordToUTF8Bytes(password), salt, iterations);
    initCipher(generator, params.getEncryptionScheme());
}

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From source file:org.jruby.ext.openssl.x509store.PEMInputOutput.java

License:LGPL

private static CipherParameters extractPBES2CipherParams(char[] password, PBES2Parameters pbeParams) {
    PBKDF2Params pbkdfParams = PBKDF2Params.getInstance(pbeParams.getKeyDerivationFunc().getParameters());
    int keySize = 192;
    if (pbkdfParams.getKeyLength() != null) {
        keySize = pbkdfParams.getKeyLength().intValue() * 8;
    }/*www.j av  a 2  s .c om*/
    int iterationCount = pbkdfParams.getIterationCount().intValue();
    byte[] salt = pbkdfParams.getSalt();
    PBEParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init(PBEParametersGenerator.PKCS5PasswordToBytes(password), salt, iterationCount);
    return generator.generateDerivedParameters(keySize);
}

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