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Diffstat (limited to 'libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/ECUtil.java')
-rw-r--r--libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/ECUtil.java286
1 files changed, 0 insertions, 286 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/ECUtil.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/ECUtil.java
deleted file mode 100644
index b84c7ad55..000000000
--- a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/util/ECUtil.java
+++ /dev/null
@@ -1,286 +0,0 @@
-package org.spongycastle.jcajce.provider.asymmetric.util;
-
-import java.security.InvalidKeyException;
-import java.security.PrivateKey;
-import java.security.PublicKey;
-
-import org.spongycastle.asn1.ASN1ObjectIdentifier;
-import org.spongycastle.asn1.cryptopro.ECGOST3410NamedCurves;
-import org.spongycastle.asn1.nist.NISTNamedCurves;
-import org.spongycastle.asn1.pkcs.PrivateKeyInfo;
-import org.spongycastle.asn1.sec.SECNamedCurves;
-import org.spongycastle.asn1.teletrust.TeleTrusTNamedCurves;
-import org.spongycastle.asn1.x509.SubjectPublicKeyInfo;
-import org.spongycastle.asn1.x9.X962NamedCurves;
-import org.spongycastle.asn1.x9.X9ECParameters;
-import org.spongycastle.crypto.params.AsymmetricKeyParameter;
-import org.spongycastle.crypto.params.ECDomainParameters;
-import org.spongycastle.crypto.params.ECPrivateKeyParameters;
-import org.spongycastle.crypto.params.ECPublicKeyParameters;
-import org.spongycastle.jcajce.provider.asymmetric.ec.BCECPublicKey;
-import org.spongycastle.jce.interfaces.ECPrivateKey;
-import org.spongycastle.jce.interfaces.ECPublicKey;
-import org.spongycastle.jce.provider.BouncyCastleProvider;
-import org.spongycastle.jce.spec.ECParameterSpec;
-
-/**
- * utility class for converting jce/jca ECDSA, ECDH, and ECDHC
- * objects into their org.spongycastle.crypto counterparts.
- */
-public class ECUtil
-{
- /**
- * Returns a sorted array of middle terms of the reduction polynomial.
- * @param k The unsorted array of middle terms of the reduction polynomial
- * of length 1 or 3.
- * @return the sorted array of middle terms of the reduction polynomial.
- * This array always has length 3.
- */
- static int[] convertMidTerms(
- int[] k)
- {
- int[] res = new int[3];
-
- if (k.length == 1)
- {
- res[0] = k[0];
- }
- else
- {
- if (k.length != 3)
- {
- throw new IllegalArgumentException("Only Trinomials and pentanomials supported");
- }
-
- if (k[0] < k[1] && k[0] < k[2])
- {
- res[0] = k[0];
- if (k[1] < k[2])
- {
- res[1] = k[1];
- res[2] = k[2];
- }
- else
- {
- res[1] = k[2];
- res[2] = k[1];
- }
- }
- else if (k[1] < k[2])
- {
- res[0] = k[1];
- if (k[0] < k[2])
- {
- res[1] = k[0];
- res[2] = k[2];
- }
- else
- {
- res[1] = k[2];
- res[2] = k[0];
- }
- }
- else
- {
- res[0] = k[2];
- if (k[0] < k[1])
- {
- res[1] = k[0];
- res[2] = k[1];
- }
- else
- {
- res[1] = k[1];
- res[2] = k[0];
- }
- }
- }
-
- return res;
- }
-
- public static AsymmetricKeyParameter generatePublicKeyParameter(
- PublicKey key)
- throws InvalidKeyException
- {
- if (key instanceof ECPublicKey)
- {
- ECPublicKey k = (ECPublicKey)key;
- ECParameterSpec s = k.getParameters();
-
- if (s == null)
- {
- s = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
-
- return new ECPublicKeyParameters(
- ((BCECPublicKey)k).engineGetQ(),
- new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
- }
- else
- {
- return new ECPublicKeyParameters(
- k.getQ(),
- new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
- }
- }
- else if (key instanceof java.security.interfaces.ECPublicKey)
- {
- java.security.interfaces.ECPublicKey pubKey = (java.security.interfaces.ECPublicKey)key;
- ECParameterSpec s = EC5Util.convertSpec(pubKey.getParams(), false);
- return new ECPublicKeyParameters(
- EC5Util.convertPoint(pubKey.getParams(), pubKey.getW(), false),
- new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
- }
- else
- {
- // see if we can build a key from key.getEncoded()
- try
- {
- byte[] bytes = key.getEncoded();
-
- if (bytes == null)
- {
- throw new InvalidKeyException("no encoding for EC public key");
- }
-
- PublicKey publicKey = BouncyCastleProvider.getPublicKey(SubjectPublicKeyInfo.getInstance(bytes));
-
- if (publicKey instanceof java.security.interfaces.ECPublicKey)
- {
- return ECUtil.generatePublicKeyParameter(publicKey);
- }
- }
- catch (Exception e)
- {
- throw new InvalidKeyException("cannot identify EC public key: " + e.toString());
- }
- }
-
- throw new InvalidKeyException("cannot identify EC public key.");
- }
-
- public static AsymmetricKeyParameter generatePrivateKeyParameter(
- PrivateKey key)
- throws InvalidKeyException
- {
- if (key instanceof ECPrivateKey)
- {
- ECPrivateKey k = (ECPrivateKey)key;
- ECParameterSpec s = k.getParameters();
-
- if (s == null)
- {
- s = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();
- }
-
- return new ECPrivateKeyParameters(
- k.getD(),
- new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
- }
- else if (key instanceof java.security.interfaces.ECPrivateKey)
- {
- java.security.interfaces.ECPrivateKey privKey = (java.security.interfaces.ECPrivateKey)key;
- ECParameterSpec s = EC5Util.convertSpec(privKey.getParams(), false);
- return new ECPrivateKeyParameters(
- privKey.getS(),
- new ECDomainParameters(s.getCurve(), s.getG(), s.getN(), s.getH(), s.getSeed()));
- }
- else
- {
- // see if we can build a key from key.getEncoded()
- try
- {
- byte[] bytes = key.getEncoded();
-
- if (bytes == null)
- {
- throw new InvalidKeyException("no encoding for EC private key");
- }
-
- PrivateKey privateKey = BouncyCastleProvider.getPrivateKey(PrivateKeyInfo.getInstance(bytes));
-
- if (privateKey instanceof java.security.interfaces.ECPrivateKey)
- {
- return ECUtil.generatePrivateKeyParameter(privateKey);
- }
- }
- catch (Exception e)
- {
- throw new InvalidKeyException("cannot identify EC private key: " + e.toString());
- }
- }
-
- throw new InvalidKeyException("can't identify EC private key.");
- }
-
- public static ASN1ObjectIdentifier getNamedCurveOid(
- String name)
- {
- ASN1ObjectIdentifier oid = X962NamedCurves.getOID(name);
-
- if (oid == null)
- {
- oid = SECNamedCurves.getOID(name);
- if (oid == null)
- {
- oid = NISTNamedCurves.getOID(name);
- }
- if (oid == null)
- {
- oid = TeleTrusTNamedCurves.getOID(name);
- }
- if (oid == null)
- {
- oid = ECGOST3410NamedCurves.getOID(name);
- }
- }
-
- return oid;
- }
-
- public static X9ECParameters getNamedCurveByOid(
- ASN1ObjectIdentifier oid)
- {
- X9ECParameters params = X962NamedCurves.getByOID(oid);
-
- if (params == null)
- {
- params = SECNamedCurves.getByOID(oid);
- if (params == null)
- {
- params = NISTNamedCurves.getByOID(oid);
- }
- if (params == null)
- {
- params = TeleTrusTNamedCurves.getByOID(oid);
- }
- }
-
- return params;
- }
-
- public static String getCurveName(
- ASN1ObjectIdentifier oid)
- {
- String name = X962NamedCurves.getName(oid);
-
- if (name == null)
- {
- name = SECNamedCurves.getName(oid);
- if (name == null)
- {
- name = NISTNamedCurves.getName(oid);
- }
- if (name == null)
- {
- name = TeleTrusTNamedCurves.getName(oid);
- }
- if (name == null)
- {
- name = ECGOST3410NamedCurves.getName(oid);
- }
- }
-
- return name;
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-10 08:00:54 +0000