73 lines
2.7 KiB
Java
73 lines
2.7 KiB
Java
|
package org.bouncycastle.jcajce.provider.asymmetric.util;
|
||
|
|
|
||
|
|
import java.math.BigInteger;
|
||
|
|
import java.security.SignatureException;
|
||
|
|
import java.security.SignatureSpi;
|
||
|
|
import java.security.spec.AlgorithmParameterSpec;
|
||
|
|
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
|
||
|
|
import org.bouncycastle.asn1.x509.X509ObjectIdentifiers;
|
||
|
|
import org.bouncycastle.crypto.DSA;
|
||
|
|
import org.bouncycastle.crypto.Digest;
|
||
|
|
|
||
|
|
/* loaded from: classes6.dex */
|
||
|
|
public abstract class DSABase extends SignatureSpi implements PKCSObjectIdentifiers, X509ObjectIdentifiers {
|
||
|
|
public Digest digest;
|
||
|
|
protected DSAEncoder encoder;
|
||
|
|
public DSA signer;
|
||
|
|
|
||
|
|
@Override // java.security.SignatureSpi
|
||
|
|
protected boolean engineVerify(byte[] bArr) throws SignatureException {
|
||
|
|
byte[] bArr2 = new byte[this.digest.getDigestSize()];
|
||
|
|
this.digest.doFinal(bArr2, 0);
|
||
|
|
try {
|
||
|
|
BigInteger[] decode = this.encoder.decode(bArr);
|
||
|
|
return this.signer.verifySignature(bArr2, decode[0], decode[1]);
|
||
|
|
} catch (Exception unused) {
|
||
|
|
throw new SignatureException("error decoding signature bytes.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@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 {
|
||
|
|
BigInteger[] generateSignature = this.signer.generateSignature(bArr);
|
||
|
|
return this.encoder.encode(generateSignature[0], generateSignature[1]);
|
||
|
|
} 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 Object engineGetParameter(String str) {
|
||
|
|
throw new UnsupportedOperationException("engineSetParameter unsupported");
|
||
|
|
}
|
||
|
|
|
||
|
|
public DSABase(Digest digest, DSA dsa, DSAEncoder dSAEncoder) {
|
||
|
|
this.digest = digest;
|
||
|
|
this.signer = dsa;
|
||
|
|
this.encoder = dSAEncoder;
|
||
|
|
}
|
||
|
|
}
|