org.bouncycastle.crypto.signers.Utils Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcprov-lts8on Show documentation

The Long Term Stable (LTS) Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains the JCA/JCE provider and low-level API for the BC LTS version 2.73.7 for Java 8 and later.

There is a newer version: 2.73.7

Show newest version

package org.bouncycastle.crypto.signers;

import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.CryptoServiceProperties;
import org.bouncycastle.crypto.CryptoServicePurpose;
import org.bouncycastle.crypto.constraints.ConstraintUtils;
import org.bouncycastle.crypto.constraints.DefaultServiceProperties;
import org.bouncycastle.crypto.params.DSAKeyParameters;
import org.bouncycastle.crypto.params.ECKeyParameters;
import org.bouncycastle.crypto.params.GOST3410KeyParameters;

class Utils
{
    static CryptoServiceProperties getDefaultProperties(String algorithm, DSAKeyParameters k, boolean forSigning)
    {
        return new DefaultServiceProperties(algorithm, ConstraintUtils.bitsOfSecurityFor(k.getParameters().getP()), k, getPurpose(forSigning));
    }

    static CryptoServiceProperties getDefaultProperties(String algorithm, GOST3410KeyParameters k, boolean forSigning)
    {
        return new DefaultServiceProperties(algorithm, ConstraintUtils.bitsOfSecurityFor(k.getParameters().getP()), k, getPurpose(forSigning));
    }

    static CryptoServiceProperties getDefaultProperties(String algorithm, ECKeyParameters k, boolean forSigning)
    {
        return new DefaultServiceProperties(algorithm, ConstraintUtils.bitsOfSecurityFor(k.getParameters().getCurve()), k, getPurpose(forSigning));
    }

    static CryptoServiceProperties getDefaultProperties(String algorithm, int bitsOfSecurity, CipherParameters k, boolean forSigning)
    {
        return new DefaultServiceProperties(algorithm, bitsOfSecurity, k, getPurpose(forSigning));
    }

    static CryptoServicePurpose getPurpose(boolean forSigning)
    {
        return forSigning ? CryptoServicePurpose.SIGNING : CryptoServicePurpose.VERIFYING;
    }
}