Showing the changes to java/pkg/sun/security/ec/ECPrivateKeyImpl.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,164 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.security.ec; | |
| 27 | + | |
| 28 | +import java.io.IOException; | |
| 29 | +import java.math.BigInteger; | |
| 30 | + | |
| 31 | +import java.security.*; | |
| 32 | +import java.security.interfaces.*; | |
| 33 | +import java.security.spec.*; | |
| 34 | + | |
| 35 | +import sun.security.util.*; | |
| 36 | +import sun.security.x509.AlgorithmId; | |
| 37 | +import sun.security.pkcs.PKCS8Key; | |
| 38 | + | |
| 39 | +/** | |
| 40 | + * Key implementation for EC private keys. | |
| 41 | + * | |
| 42 | + * ASN.1 syntax for EC private keys from SEC 1 v1.5 (draft): | |
| 43 | + * | |
| 44 | + * <pre> | |
| 45 | + * EXPLICIT TAGS | |
| 46 | + * | |
| 47 | + * ECPrivateKey ::= SEQUENCE { | |
| 48 | + * version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1), | |
| 49 | + * privateKey OCTET STRING, | |
| 50 | + * parameters [0] ECDomainParameters {{ SECGCurveNames }} OPTIONAL, | |
| 51 | + * publicKey [1] BIT STRING OPTIONAL | |
| 52 | + * } | |
| 53 | + * </pre> | |
| 54 | + * | |
| 55 | + * We currently ignore the optional parameters and publicKey fields. We | |
| 56 | + * require that the parameters are encoded as part of the AlgorithmIdentifier, | |
| 57 | + * not in the private key structure. | |
| 58 | + * | |
| 59 | + * @since 1.6 | |
| 60 | + * @author Andreas Sterbenz | |
| 61 | + */ | |
| 62 | +public final class ECPrivateKeyImpl extends PKCS8Key implements ECPrivateKey { | |
| 63 | + | |
| 64 | + private static final long serialVersionUID = 88695385615075129L; | |
| 65 | + | |
| 66 | + private BigInteger s; // private value | |
| 67 | + private ECParameterSpec params; | |
| 68 | + | |
| 69 | + /** | |
| 70 | + * Construct a key from its encoding. Called by the ECKeyFactory and | |
| 71 | + * the SunPKCS11 code. | |
| 72 | + */ | |
| 73 | + public ECPrivateKeyImpl(byte[] encoded) throws InvalidKeyException { | |
| 74 | + decode(encoded); | |
| 75 | + } | |
| 76 | + | |
| 77 | + /** | |
| 78 | + * Construct a key from its components. Used by the | |
| 79 | + * KeyFactory and the SunPKCS11 code. | |
| 80 | + */ | |
| 81 | + public ECPrivateKeyImpl(BigInteger s, ECParameterSpec params) | |
| 82 | + throws InvalidKeyException { | |
| 83 | + this.s = s; | |
| 84 | + this.params = params; | |
| 85 | + // generate the encoding | |
| 86 | + algid = new AlgorithmId | |
| 87 | + (AlgorithmId.EC_oid, ECParameters.getAlgorithmParameters(params)); | |
| 88 | + try { | |
| 89 | + DerOutputStream out = new DerOutputStream(); | |
| 90 | + out.putInteger(1); // version 1 | |
| 91 | + byte[] privBytes = ECParameters.trimZeroes(s.toByteArray()); | |
| 92 | + out.putOctetString(privBytes); | |
| 93 | + DerValue val = | |
| 94 | + new DerValue(DerValue.tag_Sequence, out.toByteArray()); | |
| 95 | + key = val.toByteArray(); | |
| 96 | + } catch (IOException exc) { | |
| 97 | + // should never occur | |
| 98 | + throw new InvalidKeyException(exc); | |
| 99 | + } | |
| 100 | + } | |
| 101 | + | |
| 102 | + // see JCA doc | |
| 103 | + public String getAlgorithm() { | |
| 104 | + return "EC"; | |
| 105 | + } | |
| 106 | + | |
| 107 | + // see JCA doc | |
| 108 | + public BigInteger getS() { | |
| 109 | + return s; | |
| 110 | + } | |
| 111 | + | |
| 112 | + // see JCA doc | |
| 113 | + public ECParameterSpec getParams() { | |
| 114 | + return params; | |
| 115 | + } | |
| 116 | + | |
| 117 | + /** | |
| 118 | + * Parse the key. Called by PKCS8Key. | |
| 119 | + */ | |
| 120 | + protected void parseKeyBits() throws InvalidKeyException { | |
| 121 | + try { | |
| 122 | + DerInputStream in = new DerInputStream(key); | |
| 123 | + DerValue derValue = in.getDerValue(); | |
| 124 | + if (derValue.tag != DerValue.tag_Sequence) { | |
| 125 | + throw new IOException("Not a SEQUENCE"); | |
| 126 | + } | |
| 127 | + DerInputStream data = derValue.data; | |
| 128 | + int version = data.getInteger(); | |
| 129 | + if (version != 1) { | |
| 130 | + throw new IOException("Version must be 1"); | |
| 131 | + } | |
| 132 | + byte[] privData = data.getOctetString(); | |
| 133 | + s = new BigInteger(1, privData); | |
| 134 | + while (data.available() != 0) { | |
| 135 | + DerValue value = data.getDerValue(); | |
| 136 | + if (value.isContextSpecific((byte)0)) { | |
| 137 | + // ignore for now | |
| 138 | + } else if (value.isContextSpecific((byte)1)) { | |
| 139 | + // ignore for now | |
| 140 | + } else { | |
| 141 | + throw new InvalidKeyException("Unexpected value: " + value); | |
| 142 | + } | |
| 143 | + } | |
| 144 | + AlgorithmParameters algParams = this.algid.getParameters(); | |
| 145 | + if (algParams == null) { | |
| 146 | + throw new InvalidKeyException("EC domain parameters must be " | |
| 147 | + + "encoded in the algorithm identifier"); | |
| 148 | + } | |
| 149 | + params = algParams.getParameterSpec(ECParameterSpec.class); | |
| 150 | + } catch (IOException e) { | |
| 151 | + throw new InvalidKeyException("Invalid EC private key", e); | |
| 152 | + } catch (InvalidParameterSpecException e) { | |
| 153 | + throw new InvalidKeyException("Invalid EC private key", e); | |
| 154 | + } | |
| 155 | + } | |
| 156 | + | |
| 157 | + // return a string representation of this key for debugging | |
| 158 | + public String toString() { | |
| 159 | + return "Sun EC private key, " + params.getCurve().getField().getFieldSize() | |
| 160 | + + " bits\n private value: " | |
| 161 | + + s + "\n parameters: " + params; | |
| 162 | + } | |
| 163 | + | |
| 164 | +} | |