what-the-bank/sources/org/bouncycastle/pqc/jcajce/provider/sphincs/SignatureSpi.java

package org.bouncycastle.pqc.jcajce.provider.sphincs;

import java.security.InvalidKeyException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.SignatureException;
import java.security.spec.AlgorithmParameterSpec;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.SHA3Digest;
import org.bouncycastle.crypto.digests.SHA512Digest;
import org.bouncycastle.crypto.digests.SHA512tDigest;
import org.bouncycastle.crypto.params.ParametersWithRandom;
import org.bouncycastle.pqc.crypto.sphincs.SPHINCS256Signer;

/* loaded from: classes6.dex */
public class SignatureSpi extends java.security.SignatureSpi {
    private Digest digest;
    private SecureRandom random;
    private SPHINCS256Signer signer;

    @Override // java.security.SignatureSpi
    protected boolean engineVerify(byte[] bArr) throws SignatureException {
        byte[] bArr2 = new byte[this.digest.getDigestSize()];
        this.digest.doFinal(bArr2, 0);
        return this.signer.verifySignature(bArr2, bArr);
    }

    @Override // java.security.SignatureSpi
    protected void engineUpdate(byte[] bArr, int i, int i2) throws SignatureException {
        this.digest.update(bArr, i, i2);
    }

    @Override // java.security.SignatureSpi
    protected void engineUpdate(byte b) throws SignatureException {
        this.digest.update(b);
    }

    @Override // java.security.SignatureSpi
    protected byte[] engineSign() throws SignatureException {
        byte[] bArr = new byte[this.digest.getDigestSize()];
        this.digest.doFinal(bArr, 0);
        try {
            return this.signer.generateSignature(bArr);
        } catch (Exception e) {
            throw new SignatureException(e.toString());
        }
    }

    @Override // java.security.SignatureSpi
    protected void engineSetParameter(AlgorithmParameterSpec algorithmParameterSpec) {
        throw new UnsupportedOperationException("engineSetParameter unsupported");
    }

    @Override // java.security.SignatureSpi
    protected void engineSetParameter(String str, Object obj) {
        throw new UnsupportedOperationException("engineSetParameter unsupported");
    }

    @Override // java.security.SignatureSpi
    protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException {
        if (!(publicKey instanceof BCSphincs256PublicKey)) {
            throw new InvalidKeyException("unknown public key passed to SPHINCS-256");
        }
        CipherParameters keyParams = ((BCSphincs256PublicKey) publicKey).getKeyParams();
        this.digest.reset();
        this.signer.init(false, keyParams);
    }

    @Override // java.security.SignatureSpi
    protected void engineInitSign(PrivateKey privateKey, SecureRandom secureRandom) throws InvalidKeyException {
        this.random = secureRandom;
        engineInitSign(privateKey);
    }

    @Override // java.security.SignatureSpi
    protected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException {
        if (!(privateKey instanceof BCSphincs256PrivateKey)) {
            throw new InvalidKeyException("unknown private key passed to SPHINCS-256");
        }
        CipherParameters keyParams = ((BCSphincs256PrivateKey) privateKey).getKeyParams();
        SecureRandom secureRandom = this.random;
        if (secureRandom != null) {
            keyParams = new ParametersWithRandom(keyParams, secureRandom);
        }
        this.digest.reset();
        this.signer.init(true, keyParams);
    }

    /* loaded from: classes6.dex */
    public static class withSha3_512 extends SignatureSpi {
        public withSha3_512() {
            super(new SHA3Digest(512), new SPHINCS256Signer(new SHA3Digest(256), new SHA3Digest(512)));
        }
    }

    /* loaded from: classes6.dex */
    public static class withSha512 extends SignatureSpi {
        public withSha512() {
            super(new SHA512Digest(), new SPHINCS256Signer(new SHA512tDigest(256), new SHA512Digest()));
        }
    }

    @Override // java.security.SignatureSpi
    protected Object engineGetParameter(String str) {
        throw new UnsupportedOperationException("engineSetParameter unsupported");
    }

    protected SignatureSpi(Digest digest, SPHINCS256Signer sPHINCS256Signer) {
        this.digest = digest;
        this.signer = sPHINCS256Signer;
    }
}