/** Construct a key from its components. Used by the ECKeyFactory and SunPKCS11. */
public ECPublicKeyImpl(ECPoint w, ECParameterSpec params) throws InvalidKeyException {
this.w = w;
this.params = params;
// generate the encoding
algid = new AlgorithmId(AlgorithmId.EC_oid, ECParameters.getAlgorithmParameters(params));
key = ECParameters.encodePoint(w, params.getCurve());
}
/** Parse the key. Called by X509Key. */
protected void parseKeyBits() throws InvalidKeyException {
try {
AlgorithmParameters algParams = this.algid.getParameters();
params = algParams.getParameterSpec(ECParameterSpec.class);
w = ECParameters.decodePoint(key, params.getCurve());
} catch (IOException e) {
throw new InvalidKeyException("Invalid EC key", e);
} catch (InvalidParameterSpecException e) {
throw new InvalidKeyException("Invalid EC key", e);
}
}
/** Construct a key from its components. Used by the KeyFactory. */
ECPrivateKeyImpl(BigInteger s, ECParameterSpec params) throws InvalidKeyException {
this.s = s;
this.params = params;
// generate the encoding
algid = new AlgorithmId(AlgorithmId.EC_oid, ECParameters.getAlgorithmParameters(params));
try {
DerOutputStream out = new DerOutputStream();
out.putInteger(1); // version 1
byte[] privBytes = ECUtil.trimZeroes(s.toByteArray());
out.putOctetString(privBytes);
DerValue val = new DerValue(DerValue.tag_Sequence, out.toByteArray());
key = val.toByteArray();
} catch (IOException exc) {
// should never occur
throw new InvalidKeyException(exc);
}
}
