01: /**
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */package org.apache.geronimo.crypto.asn1.sec;
17:
18: import java.math.BigInteger;
19: import org.apache.geronimo.crypto.asn1.*;
20:
21: /**
22: * the elliptic curve private key object from SEC 1
23: */
24: public class ECPrivateKeyStructure extends ASN1Encodable {
25: private ASN1Sequence seq;
26:
27: public ECPrivateKeyStructure(ASN1Sequence seq) {
28: this .seq = seq;
29: }
30:
31: public ECPrivateKeyStructure(BigInteger key) {
32: byte[] bytes = key.toByteArray();
33:
34: if (bytes[0] == 0) {
35: byte[] tmp = new byte[bytes.length - 1];
36:
37: System.arraycopy(bytes, 1, tmp, 0, tmp.length);
38: bytes = tmp;
39: }
40:
41: ASN1EncodableVector v = new ASN1EncodableVector();
42:
43: v.add(new DERInteger(1));
44: v.add(new DEROctetString(bytes));
45:
46: seq = new DERSequence(v);
47: }
48:
49: public BigInteger getKey() {
50: ASN1OctetString octs = (ASN1OctetString) seq.getObjectAt(1);
51:
52: BigInteger k = new BigInteger(1, octs.getOctets());
53:
54: return k;
55: }
56:
57: public DERObject toASN1Object() {
58: return seq;
59: }
60: }
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