what-the-bank/sources/org/bouncycastle/pqc/jcajce/provider/mceliece/McEliecePKCSCipherSpi.java

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2024-07-27 18:17:47 +07:00
package org.bouncycastle.pqc.jcajce.provider.mceliece;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.BadPaddingException;
import javax.crypto.IllegalBlockSizeException;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.x509.X509ObjectIdentifiers;
import org.bouncycastle.crypto.params.ParametersWithRandom;
import org.bouncycastle.pqc.crypto.mceliece.McElieceCipher;
import org.bouncycastle.pqc.crypto.mceliece.McElieceKeyParameters;
import org.bouncycastle.pqc.jcajce.provider.util.AsymmetricBlockCipher;
/* loaded from: classes6.dex */
public class McEliecePKCSCipherSpi extends AsymmetricBlockCipher implements PKCSObjectIdentifiers, X509ObjectIdentifiers {
private McElieceCipher cipher;
@Override // org.bouncycastle.pqc.jcajce.provider.util.AsymmetricBlockCipher
public byte[] messageEncrypt(byte[] bArr) throws IllegalBlockSizeException, BadPaddingException {
try {
return this.cipher.messageEncrypt(bArr);
} catch (Exception unused) {
return null;
}
}
@Override // org.bouncycastle.pqc.jcajce.provider.util.AsymmetricBlockCipher
public byte[] messageDecrypt(byte[] bArr) throws IllegalBlockSizeException, BadPaddingException {
try {
return this.cipher.messageDecrypt(bArr);
} catch (Exception unused) {
return null;
}
}
@Override // org.bouncycastle.pqc.jcajce.provider.util.AsymmetricBlockCipher
public void initCipherEncrypt(Key key, AlgorithmParameterSpec algorithmParameterSpec, SecureRandom secureRandom) throws InvalidKeyException, InvalidAlgorithmParameterException {
this.cipher.init(true, new ParametersWithRandom(McElieceKeysToParams.generatePublicKeyParameter((PublicKey) key), secureRandom));
this.maxPlainTextSize = this.cipher.maxPlainTextSize;
this.cipherTextSize = this.cipher.cipherTextSize;
}
@Override // org.bouncycastle.pqc.jcajce.provider.util.AsymmetricBlockCipher
public void initCipherDecrypt(Key key, AlgorithmParameterSpec algorithmParameterSpec) throws InvalidKeyException, InvalidAlgorithmParameterException {
this.cipher.init(false, McElieceKeysToParams.generatePrivateKeyParameter((PrivateKey) key));
this.maxPlainTextSize = this.cipher.maxPlainTextSize;
this.cipherTextSize = this.cipher.cipherTextSize;
}
@Override // org.bouncycastle.pqc.jcajce.provider.util.CipherSpiExt
public String getName() {
return "McEliecePKCS";
}
/* loaded from: classes6.dex */
public static class McEliecePKCS extends McEliecePKCSCipherSpi {
public McEliecePKCS() {
super(new McElieceCipher());
}
}
@Override // org.bouncycastle.pqc.jcajce.provider.util.CipherSpiExt
public int getKeySize(Key key) throws InvalidKeyException {
return this.cipher.getKeySize((McElieceKeyParameters) (key instanceof PublicKey ? McElieceKeysToParams.generatePublicKeyParameter((PublicKey) key) : McElieceKeysToParams.generatePrivateKeyParameter((PrivateKey) key)));
}
public McEliecePKCSCipherSpi(McElieceCipher mcElieceCipher) {
this.cipher = mcElieceCipher;
}
}