diff options
Diffstat (limited to 'prov/src/main/jdk1.4/org/bouncycastle/jcajce/provider/asymmetric/util/ECUtil.java')
| -rw-r--r-- | prov/src/main/jdk1.4/org/bouncycastle/jcajce/provider/asymmetric/util/ECUtil.java | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/prov/src/main/jdk1.4/org/bouncycastle/jcajce/provider/asymmetric/util/ECUtil.java b/prov/src/main/jdk1.4/org/bouncycastle/jcajce/provider/asymmetric/util/ECUtil.java deleted file mode 100644 index c5ebb771..00000000 --- a/prov/src/main/jdk1.4/org/bouncycastle/jcajce/provider/asymmetric/util/ECUtil.java +++ /dev/null @@ -1,220 +0,0 @@ -package org.bouncycastle.jcajce.provider.asymmetric.util; - -import java.security.InvalidKeyException; -import java.security.PrivateKey; -import java.security.PublicKey; - -import org.bouncycastle.asn1.ASN1ObjectIdentifier; -import org.bouncycastle.asn1.cryptopro.ECGOST3410NamedCurves; -import org.bouncycastle.asn1.nist.NISTNamedCurves; -import org.bouncycastle.asn1.sec.SECNamedCurves; -import org.bouncycastle.asn1.teletrust.TeleTrusTNamedCurves; -import org.bouncycastle.asn1.x9.X962NamedCurves; -import org.bouncycastle.asn1.x9.X9ECParameters; -import org.bouncycastle.crypto.params.AsymmetricKeyParameter; -import org.bouncycastle.crypto.params.ECDomainParameters; -import org.bouncycastle.crypto.params.ECPrivateKeyParameters; -import org.bouncycastle.crypto.params.ECPublicKeyParameters; -import org.bouncycastle.jce.interfaces.ECPrivateKey; -import org.bouncycastle.jce.interfaces.ECPublicKey; -import org.bouncycastle.jce.provider.BouncyCastleProvider; -import org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPublicKey; -import org.bouncycastle.jce.spec.ECParameterSpec; - -/** - * utility class for converting jce/jca ECDSA, ECDH, and ECDHC - * objects into their org.bouncycastle.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())); - } - } - - 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())); - } - - 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; - } -} |