Example usage for org.bouncycastle.asn1.pkcs KeyDerivationFunc getParameters

Introduction

In this page you can find the example usage for org.bouncycastle.asn1.pkcs KeyDerivationFunc getParameters.

Prototype

public ASN1Encodable getParameters() 

Source Link

Usage

From source file:org.xwiki.crypto.password.internal.kdf.factory.BcPKCS5S2KeyDerivationFunctionFactory.java

License:Open Source License

@Override
public KeyDerivationFunction getInstance(ASN1Encodable parameters) {
    KeyDerivationFunc kdf = KeyDerivationFunc.getInstance(parameters);

    if (!kdf.getAlgorithm().equals(PKCSObjectIdentifiers.id_PBKDF2)) {
        throw new IllegalArgumentException(
                "Illegal algorithm identifier for PBKDF2: " + kdf.getAlgorithm().getId());
    }//w  w w. java 2s . c o m

    PBKDF2Params params = PBKDF2Params.getInstance(kdf.getParameters());

    return getInstance(
            new PBKDF2Parameters((params.getKeyLength() != null) ? params.getKeyLength().intValue() : -1,
                    params.getIterationCount().intValue(), params.getSalt(),
                    toDigestHint(params.getPseudoRandomFunctionIdentifier())));
}

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From source file:org.xwiki.crypto.password.internal.kdf.factory.BcScryptKeyDerivationFunctionFactory.java

License:Open Source License

@Override
public KeyDerivationFunction getInstance(ASN1Encodable parameters) {
    KeyDerivationFunc kdf = KeyDerivationFunc.getInstance(parameters);

    if (!kdf.getAlgorithm().equals(ALG_ID)) {
        throw new IllegalArgumentException(
                "Illegal algorithm identifier for Scrypt: " + kdf.getAlgorithm().getId());
    }//from w  w  w .  j a  v a 2s .  c o  m

    ScryptKDFParams params = ScryptKDFParams.getInstance(kdf.getParameters());

    return getInstance(
            new ScryptParameters((params.getKeyLength() != null) ? params.getKeyLength().intValue() : -1,
                    params.getCostParameter().intValue(), params.getParallelizationParameter().intValue(),
                    params.getBlockSize().intValue(), params.getSalt()));
}

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