236 lines
11 KiB
Java
236 lines
11 KiB
Java
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package org.bouncycastle.jcajce.provider.asymmetric.util;
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import java.math.BigInteger;
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import java.security.InvalidKeyException;
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import java.security.PrivateKey;
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import java.security.PublicKey;
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import java.util.Enumeration;
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import org.bouncycastle.asn1.ASN1ObjectIdentifier;
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import org.bouncycastle.asn1.anssi.ANSSINamedCurves;
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import org.bouncycastle.asn1.cryptopro.ECGOST3410NamedCurves;
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import org.bouncycastle.asn1.nist.NISTNamedCurves;
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import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
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import org.bouncycastle.asn1.sec.SECNamedCurves;
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import org.bouncycastle.asn1.teletrust.TeleTrusTNamedCurves;
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import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
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import org.bouncycastle.asn1.x9.ECNamedCurveTable;
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import org.bouncycastle.asn1.x9.X962NamedCurves;
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import org.bouncycastle.asn1.x9.X9ECParameters;
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import org.bouncycastle.crypto.ec.CustomNamedCurves;
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import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
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import org.bouncycastle.crypto.params.ECDomainParameters;
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import org.bouncycastle.crypto.params.ECPrivateKeyParameters;
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import org.bouncycastle.crypto.params.ECPublicKeyParameters;
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import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey;
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import org.bouncycastle.jce.interfaces.ECPrivateKey;
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import org.bouncycastle.jce.interfaces.ECPublicKey;
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import org.bouncycastle.jce.provider.BouncyCastleProvider;
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import org.bouncycastle.jce.spec.ECParameterSpec;
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/* loaded from: classes6.dex */
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public class ECUtil {
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private static ASN1ObjectIdentifier lookupOidByName(String str) {
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ASN1ObjectIdentifier oid = X962NamedCurves.getOID(str);
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if (oid != null) {
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return oid;
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}
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ASN1ObjectIdentifier oid2 = SECNamedCurves.getOID(str);
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if (oid2 == null) {
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oid2 = NISTNamedCurves.getOID(str);
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}
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if (oid2 == null) {
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oid2 = TeleTrusTNamedCurves.getOID(str);
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}
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if (oid2 == null) {
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oid2 = ECGOST3410NamedCurves.getOID(str);
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}
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return oid2 == null ? ANSSINamedCurves.getOID(str) : oid2;
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}
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public static int getOrderBitLength(BigInteger bigInteger, BigInteger bigInteger2) {
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if (bigInteger != null) {
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return bigInteger.bitLength();
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}
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ECParameterSpec ecImplicitlyCa = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
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return ecImplicitlyCa == null ? bigInteger2.bitLength() : ecImplicitlyCa.getN().bitLength();
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}
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public static ASN1ObjectIdentifier getNamedCurveOid(ECParameterSpec eCParameterSpec) {
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Enumeration names = ECNamedCurveTable.getNames();
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while (names.hasMoreElements()) {
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String str = (String) names.nextElement();
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X9ECParameters byName = ECNamedCurveTable.getByName(str);
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if (byName.getN().equals(eCParameterSpec.getN()) && byName.getH().equals(eCParameterSpec.getH()) && byName.getCurve().equals(eCParameterSpec.getCurve()) && byName.getG().equals(eCParameterSpec.getG())) {
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return ECNamedCurveTable.getOID(str);
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}
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}
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return null;
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}
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public static ASN1ObjectIdentifier getNamedCurveOid(String str) {
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if (str.indexOf(32) > 0) {
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str = str.substring(str.indexOf(32) + 1);
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}
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try {
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return (str.charAt(0) < '0' || str.charAt(0) > '2') ? lookupOidByName(str) : new ASN1ObjectIdentifier(str);
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} catch (IllegalArgumentException unused) {
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return lookupOidByName(str);
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}
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}
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public static X9ECParameters getNamedCurveByOid(ASN1ObjectIdentifier aSN1ObjectIdentifier) {
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X9ECParameters byOID = CustomNamedCurves.getByOID(aSN1ObjectIdentifier);
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if (byOID != null) {
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return byOID;
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}
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X9ECParameters byOID2 = X962NamedCurves.getByOID(aSN1ObjectIdentifier);
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if (byOID2 == null) {
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byOID2 = SECNamedCurves.getByOID(aSN1ObjectIdentifier);
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}
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if (byOID2 == null) {
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byOID2 = NISTNamedCurves.getByOID(aSN1ObjectIdentifier);
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}
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return byOID2 == null ? TeleTrusTNamedCurves.getByOID(aSN1ObjectIdentifier) : byOID2;
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}
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public static X9ECParameters getNamedCurveByName(String str) {
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X9ECParameters byName = CustomNamedCurves.getByName(str);
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if (byName != null) {
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return byName;
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}
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X9ECParameters byName2 = X962NamedCurves.getByName(str);
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if (byName2 == null) {
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byName2 = SECNamedCurves.getByName(str);
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}
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if (byName2 == null) {
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byName2 = NISTNamedCurves.getByName(str);
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}
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return byName2 == null ? TeleTrusTNamedCurves.getByName(str) : byName2;
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}
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public static String getCurveName(ASN1ObjectIdentifier aSN1ObjectIdentifier) {
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String name = X962NamedCurves.getName(aSN1ObjectIdentifier);
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if (name != null) {
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return name;
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}
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String name2 = SECNamedCurves.getName(aSN1ObjectIdentifier);
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if (name2 == null) {
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name2 = NISTNamedCurves.getName(aSN1ObjectIdentifier);
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}
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if (name2 == null) {
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name2 = TeleTrusTNamedCurves.getName(aSN1ObjectIdentifier);
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}
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return name2 == null ? ECGOST3410NamedCurves.getName(aSN1ObjectIdentifier) : name2;
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}
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public static AsymmetricKeyParameter generatePublicKeyParameter(PublicKey publicKey) throws InvalidKeyException {
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if (publicKey instanceof ECPublicKey) {
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ECPublicKey eCPublicKey = (ECPublicKey) publicKey;
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ECParameterSpec parameters = eCPublicKey.getParameters();
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if (parameters != null) {
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return new ECPublicKeyParameters(eCPublicKey.getQ(), new ECDomainParameters(parameters.getCurve(), parameters.getG(), parameters.getN(), parameters.getH(), parameters.getSeed()));
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}
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ECParameterSpec ecImplicitlyCa = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
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return new ECPublicKeyParameters(((BCECPublicKey) eCPublicKey).engineGetQ(), new ECDomainParameters(ecImplicitlyCa.getCurve(), ecImplicitlyCa.getG(), ecImplicitlyCa.getN(), ecImplicitlyCa.getH(), ecImplicitlyCa.getSeed()));
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}
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if (publicKey instanceof java.security.interfaces.ECPublicKey) {
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java.security.interfaces.ECPublicKey eCPublicKey2 = (java.security.interfaces.ECPublicKey) publicKey;
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ECParameterSpec convertSpec = EC5Util.convertSpec(eCPublicKey2.getParams(), false);
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return new ECPublicKeyParameters(EC5Util.convertPoint(eCPublicKey2.getParams(), eCPublicKey2.getW(), false), new ECDomainParameters(convertSpec.getCurve(), convertSpec.getG(), convertSpec.getN(), convertSpec.getH(), convertSpec.getSeed()));
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}
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try {
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byte[] encoded = publicKey.getEncoded();
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if (encoded == null) {
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throw new InvalidKeyException("no encoding for EC public key");
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}
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PublicKey publicKey2 = BouncyCastleProvider.getPublicKey(SubjectPublicKeyInfo.getInstance(encoded));
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if (publicKey2 instanceof java.security.interfaces.ECPublicKey) {
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return generatePublicKeyParameter(publicKey2);
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}
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throw new InvalidKeyException("cannot identify EC public key.");
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} catch (Exception e) {
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StringBuilder sb = new StringBuilder("cannot identify EC public key: ");
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sb.append(e.toString());
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throw new InvalidKeyException(sb.toString());
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}
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}
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public static AsymmetricKeyParameter generatePrivateKeyParameter(PrivateKey privateKey) throws InvalidKeyException {
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if (privateKey instanceof ECPrivateKey) {
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ECPrivateKey eCPrivateKey = (ECPrivateKey) privateKey;
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ECParameterSpec parameters = eCPrivateKey.getParameters();
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if (parameters == null) {
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parameters = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
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}
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return new ECPrivateKeyParameters(eCPrivateKey.getD(), new ECDomainParameters(parameters.getCurve(), parameters.getG(), parameters.getN(), parameters.getH(), parameters.getSeed()));
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}
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if (privateKey instanceof java.security.interfaces.ECPrivateKey) {
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java.security.interfaces.ECPrivateKey eCPrivateKey2 = (java.security.interfaces.ECPrivateKey) privateKey;
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ECParameterSpec convertSpec = EC5Util.convertSpec(eCPrivateKey2.getParams(), false);
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return new ECPrivateKeyParameters(eCPrivateKey2.getS(), new ECDomainParameters(convertSpec.getCurve(), convertSpec.getG(), convertSpec.getN(), convertSpec.getH(), convertSpec.getSeed()));
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}
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try {
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byte[] encoded = privateKey.getEncoded();
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if (encoded == null) {
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throw new InvalidKeyException("no encoding for EC private key");
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}
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PrivateKey privateKey2 = BouncyCastleProvider.getPrivateKey(PrivateKeyInfo.getInstance(encoded));
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if (privateKey2 instanceof java.security.interfaces.ECPrivateKey) {
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return generatePrivateKeyParameter(privateKey2);
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}
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throw new InvalidKeyException("can't identify EC private key.");
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} catch (Exception e) {
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StringBuilder sb = new StringBuilder("cannot identify EC private key: ");
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sb.append(e.toString());
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throw new InvalidKeyException(sb.toString());
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}
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public static int[] convertMidTerms(int[] iArr) {
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int i;
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int[] iArr2 = new int[3];
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if (iArr.length == 1) {
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iArr2[0] = iArr[0];
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} else {
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if (iArr.length != 3) {
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throw new IllegalArgumentException("Only Trinomials and pentanomials supported");
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}
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int i2 = iArr[0];
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int i3 = iArr[1];
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if (i2 >= i3 || i2 >= (i = iArr[2])) {
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int i4 = iArr[2];
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if (i3 < i4) {
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iArr2[0] = i3;
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i3 = iArr[0];
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if (i3 >= i4) {
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iArr2[1] = i4;
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iArr2[2] = i3;
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}
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iArr2[1] = i3;
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iArr2[2] = i4;
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} else {
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iArr2[0] = i4;
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i4 = iArr[0];
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if (i4 < i3) {
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iArr2[1] = i4;
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iArr2[2] = iArr[1];
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}
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iArr2[1] = i3;
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iArr2[2] = i4;
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}
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} else {
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iArr2[0] = i2;
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if (i3 < i) {
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iArr2[1] = i3;
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iArr2[2] = i;
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} else {
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iArr2[1] = i;
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iArr2[2] = iArr[1];
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}
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}
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}
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return iArr2;
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}
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}
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