| /* |
| * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.pkcs11; |
| |
| import java.io.IOException; |
| import java.math.BigInteger; |
| |
| import java.security.*; |
| import java.security.interfaces.*; |
| import java.security.spec.*; |
| |
| import static sun.security.pkcs11.TemplateManager.*; |
| import sun.security.pkcs11.wrapper.*; |
| import static sun.security.pkcs11.wrapper.PKCS11Constants.*; |
| |
| import sun.security.util.DerValue; |
| import sun.security.util.ECUtil; |
| |
| /** |
| * EC KeyFactory implementation. |
| * |
| * @author Andreas Sterbenz |
| * @since 1.6 |
| */ |
| final class P11ECKeyFactory extends P11KeyFactory { |
| private static Provider sunECprovider; |
| |
| private static Provider getSunECProvider() { |
| if (sunECprovider == null) { |
| sunECprovider = Security.getProvider("SunEC"); |
| if (sunECprovider == null) { |
| throw new RuntimeException("Cannot load SunEC provider"); |
| } |
| } |
| |
| return sunECprovider; |
| } |
| |
| P11ECKeyFactory(Token token, String algorithm) { |
| super(token, algorithm); |
| } |
| |
| static ECParameterSpec getECParameterSpec(String name) { |
| return ECUtil.getECParameterSpec(getSunECProvider(), name); |
| } |
| |
| static ECParameterSpec getECParameterSpec(int keySize) { |
| return ECUtil.getECParameterSpec(getSunECProvider(), keySize); |
| } |
| |
| // Check that spec is a known supported curve and convert it to our |
| // ECParameterSpec subclass. If not possible, return null. |
| static ECParameterSpec getECParameterSpec(ECParameterSpec spec) { |
| return ECUtil.getECParameterSpec(getSunECProvider(), spec); |
| } |
| |
| static ECParameterSpec decodeParameters(byte[] params) throws IOException { |
| return ECUtil.getECParameterSpec(getSunECProvider(), params); |
| } |
| |
| static byte[] encodeParameters(ECParameterSpec params) { |
| return ECUtil.encodeECParameterSpec(getSunECProvider(), params); |
| } |
| |
| static ECPoint decodePoint(byte[] encoded, EllipticCurve curve) throws IOException { |
| return ECUtil.decodePoint(encoded, curve); |
| } |
| |
| // Used by ECDH KeyAgreement |
| static byte[] getEncodedPublicValue(PublicKey key) throws InvalidKeyException { |
| if (key instanceof ECPublicKey) { |
| ECPublicKey ecKey = (ECPublicKey)key; |
| ECPoint w = ecKey.getW(); |
| ECParameterSpec params = ecKey.getParams(); |
| return ECUtil.encodePoint(w, params.getCurve()); |
| } else { |
| // should never occur |
| throw new InvalidKeyException |
| ("Key class not yet supported: " + key.getClass().getName()); |
| } |
| } |
| |
| PublicKey implTranslatePublicKey(PublicKey key) throws InvalidKeyException { |
| try { |
| if (key instanceof ECPublicKey) { |
| ECPublicKey ecKey = (ECPublicKey)key; |
| return generatePublic( |
| ecKey.getW(), |
| ecKey.getParams() |
| ); |
| } else if ("X.509".equals(key.getFormat())) { |
| // let Sun provider parse for us, then recurse |
| byte[] encoded = key.getEncoded(); |
| |
| try { |
| key = P11ECUtil.decodeX509ECPublicKey(encoded); |
| } catch (InvalidKeySpecException ikse) { |
| throw new InvalidKeyException(ikse); |
| } |
| |
| return implTranslatePublicKey(key); |
| } else { |
| throw new InvalidKeyException("PublicKey must be instance " |
| + "of ECPublicKey or have X.509 encoding"); |
| } |
| } catch (PKCS11Exception e) { |
| throw new InvalidKeyException("Could not create EC public key", e); |
| } |
| } |
| |
| PrivateKey implTranslatePrivateKey(PrivateKey key) |
| throws InvalidKeyException { |
| try { |
| if (key instanceof ECPrivateKey) { |
| ECPrivateKey ecKey = (ECPrivateKey)key; |
| return generatePrivate( |
| ecKey.getS(), |
| ecKey.getParams() |
| ); |
| } else if ("PKCS#8".equals(key.getFormat())) { |
| // let Sun provider parse for us, then recurse |
| byte[] encoded = key.getEncoded(); |
| |
| try { |
| key = P11ECUtil.decodePKCS8ECPrivateKey(encoded); |
| } catch (InvalidKeySpecException ikse) { |
| throw new InvalidKeyException(ikse); |
| } |
| |
| return implTranslatePrivateKey(key); |
| } else { |
| throw new InvalidKeyException("PrivateKey must be instance " |
| + "of ECPrivateKey or have PKCS#8 encoding"); |
| } |
| } catch (PKCS11Exception e) { |
| throw new InvalidKeyException("Could not create EC private key", e); |
| } |
| } |
| |
| // see JCA spec |
| protected PublicKey engineGeneratePublic(KeySpec keySpec) |
| throws InvalidKeySpecException { |
| token.ensureValid(); |
| if (keySpec instanceof X509EncodedKeySpec) { |
| try { |
| byte[] encoded = ((X509EncodedKeySpec)keySpec).getEncoded(); |
| PublicKey key = P11ECUtil.decodeX509ECPublicKey(encoded); |
| return implTranslatePublicKey(key); |
| } catch (InvalidKeyException e) { |
| throw new InvalidKeySpecException |
| ("Could not create EC public key", e); |
| } |
| } |
| if (keySpec instanceof ECPublicKeySpec == false) { |
| throw new InvalidKeySpecException("Only ECPublicKeySpec and " |
| + "X509EncodedKeySpec supported for EC public keys"); |
| } |
| try { |
| ECPublicKeySpec ec = (ECPublicKeySpec)keySpec; |
| return generatePublic( |
| ec.getW(), |
| ec.getParams() |
| ); |
| } catch (PKCS11Exception e) { |
| throw new InvalidKeySpecException |
| ("Could not create EC public key", e); |
| } |
| } |
| |
| // see JCA spec |
| protected PrivateKey engineGeneratePrivate(KeySpec keySpec) |
| throws InvalidKeySpecException { |
| token.ensureValid(); |
| if (keySpec instanceof PKCS8EncodedKeySpec) { |
| try { |
| byte[] encoded = ((PKCS8EncodedKeySpec)keySpec).getEncoded(); |
| PrivateKey key = P11ECUtil.decodePKCS8ECPrivateKey(encoded); |
| return implTranslatePrivateKey(key); |
| } catch (GeneralSecurityException e) { |
| throw new InvalidKeySpecException |
| ("Could not create EC private key", e); |
| } |
| } |
| if (keySpec instanceof ECPrivateKeySpec == false) { |
| throw new InvalidKeySpecException("Only ECPrivateKeySpec and " |
| + "PKCS8EncodedKeySpec supported for EC private keys"); |
| } |
| try { |
| ECPrivateKeySpec ec = (ECPrivateKeySpec)keySpec; |
| return generatePrivate( |
| ec.getS(), |
| ec.getParams() |
| ); |
| } catch (PKCS11Exception e) { |
| throw new InvalidKeySpecException |
| ("Could not create EC private key", e); |
| } |
| } |
| |
| private PublicKey generatePublic(ECPoint point, ECParameterSpec params) |
| throws PKCS11Exception { |
| byte[] encodedParams = |
| ECUtil.encodeECParameterSpec(getSunECProvider(), params); |
| byte[] encodedPoint = |
| ECUtil.encodePoint(point, params.getCurve()); |
| |
| // Check whether the X9.63 encoding of an EC point shall be wrapped |
| // in an ASN.1 OCTET STRING |
| if (!token.config.getUseEcX963Encoding()) { |
| try { |
| encodedPoint = |
| new DerValue(DerValue.tag_OctetString, encodedPoint) |
| .toByteArray(); |
| } catch (IOException e) { |
| throw new |
| IllegalArgumentException("Could not DER encode point", e); |
| } |
| } |
| |
| CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] { |
| new CK_ATTRIBUTE(CKA_CLASS, CKO_PUBLIC_KEY), |
| new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC), |
| new CK_ATTRIBUTE(CKA_EC_POINT, encodedPoint), |
| new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams), |
| }; |
| attributes = token.getAttributes |
| (O_IMPORT, CKO_PUBLIC_KEY, CKK_EC, attributes); |
| Session session = null; |
| try { |
| session = token.getObjSession(); |
| long keyID = token.p11.C_CreateObject(session.id(), attributes); |
| return P11Key.publicKey |
| (session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes); |
| } finally { |
| token.releaseSession(session); |
| } |
| } |
| |
| private PrivateKey generatePrivate(BigInteger s, ECParameterSpec params) |
| throws PKCS11Exception { |
| byte[] encodedParams = |
| ECUtil.encodeECParameterSpec(getSunECProvider(), params); |
| CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] { |
| new CK_ATTRIBUTE(CKA_CLASS, CKO_PRIVATE_KEY), |
| new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC), |
| new CK_ATTRIBUTE(CKA_VALUE, s), |
| new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams), |
| }; |
| attributes = token.getAttributes |
| (O_IMPORT, CKO_PRIVATE_KEY, CKK_EC, attributes); |
| Session session = null; |
| try { |
| session = token.getObjSession(); |
| long keyID = token.p11.C_CreateObject(session.id(), attributes); |
| return P11Key.privateKey |
| (session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes); |
| } finally { |
| token.releaseSession(session); |
| } |
| } |
| |
| <T extends KeySpec> T implGetPublicKeySpec(P11Key key, Class<T> keySpec, |
| Session[] session) throws PKCS11Exception, InvalidKeySpecException { |
| if (ECPublicKeySpec.class.isAssignableFrom(keySpec)) { |
| session[0] = token.getObjSession(); |
| CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] { |
| new CK_ATTRIBUTE(CKA_EC_POINT), |
| new CK_ATTRIBUTE(CKA_EC_PARAMS), |
| }; |
| token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes); |
| try { |
| ECParameterSpec params = decodeParameters(attributes[1].getByteArray()); |
| ECPoint point = decodePoint(attributes[0].getByteArray(), params.getCurve()); |
| return keySpec.cast(new ECPublicKeySpec(point, params)); |
| } catch (IOException e) { |
| throw new InvalidKeySpecException("Could not parse key", e); |
| } |
| } else { // X.509 handled in superclass |
| throw new InvalidKeySpecException("Only ECPublicKeySpec and " |
| + "X509EncodedKeySpec supported for EC public keys"); |
| } |
| } |
| |
| <T extends KeySpec> T implGetPrivateKeySpec(P11Key key, Class<T> keySpec, |
| Session[] session) throws PKCS11Exception, InvalidKeySpecException { |
| if (ECPrivateKeySpec.class.isAssignableFrom(keySpec)) { |
| session[0] = token.getObjSession(); |
| CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] { |
| new CK_ATTRIBUTE(CKA_VALUE), |
| new CK_ATTRIBUTE(CKA_EC_PARAMS), |
| }; |
| token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes); |
| try { |
| ECParameterSpec params = decodeParameters(attributes[1].getByteArray()); |
| return keySpec.cast( |
| new ECPrivateKeySpec(attributes[0].getBigInteger(), params)); |
| } catch (IOException e) { |
| throw new InvalidKeySpecException("Could not parse key", e); |
| } |
| } else { // PKCS#8 handled in superclass |
| throw new InvalidKeySpecException("Only ECPrivateKeySpec " |
| + "and PKCS8EncodedKeySpec supported for EC private keys"); |
| } |
| } |
| |
| KeyFactory implGetSoftwareFactory() throws GeneralSecurityException { |
| return KeyFactory.getInstance("EC", getSunECProvider()); |
| } |
| |
| } |