JCEECPublicKeypublic class JCEECPublicKey extends Object implements org.bouncycastle.jce.interfaces.ECPublicKey
| Fields Summary |
|---|
| private String | algorithm | | private org.bouncycastle.math.ec.ECPoint | q | | private org.bouncycastle.jce.spec.ECParameterSpec | ecSpec |
| Constructors Summary |
|---|
JCEECPublicKey(String algorithm, org.bouncycastle.jce.spec.ECPublicKeySpec spec)
this.algorithm = algorithm;
this.q = spec.getQ();
this.ecSpec = spec.getParams();
| JCEECPublicKey(String algorithm, org.bouncycastle.crypto.params.ECPublicKeyParameters params, org.bouncycastle.jce.spec.ECParameterSpec spec)
ECDomainParameters dp = params.getParameters();
this.algorithm = algorithm;
this.q = params.getQ();
if (spec == null)
{
this.ecSpec = new ECParameterSpec(
dp.getCurve(),
dp.getG(),
dp.getN(),
dp.getH(),
dp.getSeed());
}
else
{
this.ecSpec = spec;
}
| JCEECPublicKey(String algorithm, org.bouncycastle.jce.interfaces.ECPublicKey key)
this.q = key.getQ();
this.algorithm = key.getAlgorithm();
this.ecSpec = key.getParams();
| JCEECPublicKey(String algorithm, org.bouncycastle.math.ec.ECPoint q, org.bouncycastle.jce.spec.ECParameterSpec ecSpec)
this.algorithm = algorithm;
this.q = q;
this.ecSpec = ecSpec;
| JCEECPublicKey(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo info)
X962Parameters params = new X962Parameters((DERObject)info.getAlgorithmId().getParameters());
if (params.isNamedCurve())
{
DERObjectIdentifier oid = (DERObjectIdentifier)params.getParameters();
X9ECParameters ecP = X962NamedCurves.getByOID(oid);
ecSpec = new ECNamedCurveParameterSpec(
X962NamedCurves.getName(oid),
ecP.getCurve(),
ecP.getG(),
ecP.getN(),
ecP.getH(),
ecP.getSeed());
}
else
{
X9ECParameters ecP = new X9ECParameters(
(ASN1Sequence)params.getParameters());
ecSpec = new ECParameterSpec(
ecP.getCurve(),
ecP.getG(),
ecP.getN(),
ecP.getH(),
ecP.getSeed());
}
DERBitString bits = info.getPublicKeyData();
byte[] data = bits.getBytes();
ASN1OctetString key = new DEROctetString(data);
//
// extra octet string - one of our old certs...
//
if (data[0] == 0x04 && data[1] == data.length - 2
&& (data[2] == 0x02 || data[2] == 0x03))
{
try
{
ByteArrayInputStream bIn = new ByteArrayInputStream(data);
DERInputStream dIn = new DERInputStream(bIn);
key = (ASN1OctetString)dIn.readObject();
}
catch (IOException ex)
{
throw new IllegalArgumentException("error recovering public key");
}
}
X9ECPoint derQ = new X9ECPoint(ecSpec.getCurve(), key);
this.q = derQ.getPoint();
|
| Methods Summary |
|---|
| public java.lang.String | getAlgorithm()
return algorithm;
| | public byte[] | getEncoded()
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
DEROutputStream dOut = new DEROutputStream(bOut);
X962Parameters params = null;
if (ecSpec instanceof ECNamedCurveParameterSpec)
{
params = new X962Parameters(X962NamedCurves.getOID(((ECNamedCurveParameterSpec)ecSpec).getName()));
}
else
{
X9ECParameters ecP = new X9ECParameters(
ecSpec.getCurve(),
ecSpec.getG(),
ecSpec.getN(),
ecSpec.getH(),
ecSpec.getSeed());
params = new X962Parameters(ecP);
}
ASN1OctetString p = (ASN1OctetString)(new X9ECPoint(this.getQ()).getDERObject());
SubjectPublicKeyInfo info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()), p.getOctets());
try
{
dOut.writeObject(info);
dOut.close();
}
catch (IOException e)
{
throw new RuntimeException("Error encoding EC public key");
}
return bOut.toByteArray();
| | public java.lang.String | getFormat()
return "X.509";
| | public org.bouncycastle.jce.spec.ECParameterSpec | getParams()
return ecSpec;
| | public org.bouncycastle.math.ec.ECPoint | getQ()
return q;
| | public java.lang.String | toString()
StringBuffer buf = new StringBuffer();
String nl = System.getProperty("line.separator");
buf.append("EC Public Key" + nl);
buf.append(" X: " + this.getQ().getX().toBigInteger().toString(16) + nl);
buf.append(" Y: " + this.getQ().getY().toBigInteger().toString(16) + nl);
return buf.toString();
|
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