--- old/src/jdk.crypto.token/share/classes/sun/security/pkcs11/P11KeyGenerator.java 2017-01-18 23:06:46.475886704 -0800 +++ /dev/null 2017-01-18 09:30:05.425422781 -0800 @@ -1,284 +0,0 @@ -/* - * Copyright (c) 2003, 2008, 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.security.*; -import java.security.spec.AlgorithmParameterSpec; - -import javax.crypto.*; - -import static sun.security.pkcs11.TemplateManager.*; -import sun.security.pkcs11.wrapper.*; -import static sun.security.pkcs11.wrapper.PKCS11Constants.*; - -/** - * KeyGenerator implementation class. This class currently supports - * DES, DESede, AES, ARCFOUR, and Blowfish. - * - * @author Andreas Sterbenz - * @since 1.5 - */ -final class P11KeyGenerator extends KeyGeneratorSpi { - - // token instance - private final Token token; - - // algorithm name - private final String algorithm; - - // mechanism id - private long mechanism; - - // raw key size in bits, e.g. 64 for DES. Always valid. - private int keySize; - - // bits of entropy in the key, e.g. 56 for DES. Always valid. - private int significantKeySize; - - // keyType (CKK_*), needed for TemplateManager call only. - private long keyType; - - // for determining if both 112 and 168 bits of DESede key lengths - // are supported. - private boolean supportBothKeySizes; - - /** - * Utility method for checking if the specified key size is valid - * and within the supported range. Return the significant key size - * upon successful validation. - * @param keyGenMech the PKCS#11 key generation mechanism. - * @param keySize the to-be-checked key size for this mechanism. - * @param token token which provides this mechanism. - * @return the significant key size (in bits) corresponding to the - * specified key size. - * @throws InvalidParameterException if the specified key size is invalid. - * @throws ProviderException if this mechanism isn't supported by SunPKCS11 - * or underlying native impl. - */ - static int checkKeySize(long keyGenMech, int keySize, Token token) - throws InvalidAlgorithmParameterException, ProviderException { - int sigKeySize; - switch ((int)keyGenMech) { - case (int)CKM_DES_KEY_GEN: - if ((keySize != 64) && (keySize != 56)) { - throw new InvalidAlgorithmParameterException - ("DES key length must be 56 bits"); - } - sigKeySize = 56; - break; - case (int)CKM_DES2_KEY_GEN: - case (int)CKM_DES3_KEY_GEN: - if ((keySize == 112) || (keySize == 128)) { - sigKeySize = 112; - } else if ((keySize == 168) || (keySize == 192)) { - sigKeySize = 168; - } else { - throw new InvalidAlgorithmParameterException - ("DESede key length must be 112, or 168 bits"); - } - break; - default: - // Handle all variable-key-length algorithms here - CK_MECHANISM_INFO info = null; - try { - info = token.getMechanismInfo(keyGenMech); - } catch (PKCS11Exception p11e) { - // Should never happen - throw new ProviderException - ("Cannot retrieve mechanism info", p11e); - } - if (info == null) { - // XXX Unable to retrieve the supported key length from - // the underlying native impl. Skip the checking for now. - return keySize; - } - // PKCS#11 defines these to be in number of bytes except for - // RC4 which is in bits. However, some PKCS#11 impls still use - // bytes for all mechs, e.g. NSS. We try to detect this - // inconsistency if the minKeySize seems unreasonably small. - int minKeySize = (int)info.ulMinKeySize; - int maxKeySize = (int)info.ulMaxKeySize; - if (keyGenMech != CKM_RC4_KEY_GEN || minKeySize < 8) { - minKeySize = (int)info.ulMinKeySize << 3; - maxKeySize = (int)info.ulMaxKeySize << 3; - } - // Explicitly disallow keys shorter than 40-bits for security - if (minKeySize < 40) minKeySize = 40; - if (keySize < minKeySize || keySize > maxKeySize) { - throw new InvalidAlgorithmParameterException - ("Key length must be between " + minKeySize + - " and " + maxKeySize + " bits"); - } - if (keyGenMech == CKM_AES_KEY_GEN) { - if ((keySize != 128) && (keySize != 192) && - (keySize != 256)) { - throw new InvalidAlgorithmParameterException - ("AES key length must be " + minKeySize + - (maxKeySize >= 192? ", 192":"") + - (maxKeySize >= 256? ", or 256":"") + " bits"); - } - } - sigKeySize = keySize; - } - return sigKeySize; - } - - P11KeyGenerator(Token token, String algorithm, long mechanism) - throws PKCS11Exception { - super(); - this.token = token; - this.algorithm = algorithm; - this.mechanism = mechanism; - - if (this.mechanism == CKM_DES3_KEY_GEN) { - /* Given the current lookup order specified in SunPKCS11.java, - if CKM_DES2_KEY_GEN is used to construct this object, it - means that CKM_DES3_KEY_GEN is disabled or unsupported. - */ - supportBothKeySizes = - (token.provider.config.isEnabled(CKM_DES2_KEY_GEN) && - (token.getMechanismInfo(CKM_DES2_KEY_GEN) != null)); - } - setDefaultKeySize(); - } - - // set default keysize and also initialize keyType - private void setDefaultKeySize() { - switch ((int)mechanism) { - case (int)CKM_DES_KEY_GEN: - keySize = 64; - keyType = CKK_DES; - break; - case (int)CKM_DES2_KEY_GEN: - keySize = 128; - keyType = CKK_DES2; - break; - case (int)CKM_DES3_KEY_GEN: - keySize = 192; - keyType = CKK_DES3; - break; - case (int)CKM_AES_KEY_GEN: - keySize = 128; - keyType = CKK_AES; - break; - case (int)CKM_RC4_KEY_GEN: - keySize = 128; - keyType = CKK_RC4; - break; - case (int)CKM_BLOWFISH_KEY_GEN: - keySize = 128; - keyType = CKK_BLOWFISH; - break; - default: - throw new ProviderException("Unknown mechanism " + mechanism); - } - try { - significantKeySize = checkKeySize(mechanism, keySize, token); - } catch (InvalidAlgorithmParameterException iape) { - throw new ProviderException("Unsupported default key size", iape); - } - } - - // see JCE spec - protected void engineInit(SecureRandom random) { - token.ensureValid(); - setDefaultKeySize(); - } - - // see JCE spec - protected void engineInit(AlgorithmParameterSpec params, - SecureRandom random) throws InvalidAlgorithmParameterException { - throw new InvalidAlgorithmParameterException - ("AlgorithmParameterSpec not supported"); - } - - // see JCE spec - protected void engineInit(int keySize, SecureRandom random) { - token.ensureValid(); - int newSignificantKeySize; - try { - newSignificantKeySize = checkKeySize(mechanism, keySize, token); - } catch (InvalidAlgorithmParameterException iape) { - throw (InvalidParameterException) - (new InvalidParameterException().initCause(iape)); - } - if ((mechanism == CKM_DES2_KEY_GEN) || - (mechanism == CKM_DES3_KEY_GEN)) { - long newMechanism = (newSignificantKeySize == 112 ? - CKM_DES2_KEY_GEN : CKM_DES3_KEY_GEN); - if (mechanism != newMechanism) { - if (supportBothKeySizes) { - mechanism = newMechanism; - // Adjust keyType to reflect the mechanism change - keyType = (mechanism == CKM_DES2_KEY_GEN ? - CKK_DES2 : CKK_DES3); - } else { - throw new InvalidParameterException - ("Only " + significantKeySize + - "-bit DESede is supported"); - } - } - } - this.keySize = keySize; - this.significantKeySize = newSignificantKeySize; - } - - // see JCE spec - protected SecretKey engineGenerateKey() { - Session session = null; - try { - session = token.getObjSession(); - CK_ATTRIBUTE[] attributes; - switch ((int)keyType) { - case (int)CKK_DES: - case (int)CKK_DES2: - case (int)CKK_DES3: - // fixed length, do not specify CKA_VALUE_LEN - attributes = new CK_ATTRIBUTE[] { - new CK_ATTRIBUTE(CKA_CLASS, CKO_SECRET_KEY), - }; - break; - default: - attributes = new CK_ATTRIBUTE[] { - new CK_ATTRIBUTE(CKA_CLASS, CKO_SECRET_KEY), - new CK_ATTRIBUTE(CKA_VALUE_LEN, keySize >> 3), - }; - break; - } - attributes = token.getAttributes - (O_GENERATE, CKO_SECRET_KEY, keyType, attributes); - long keyID = token.p11.C_GenerateKey - (session.id(), new CK_MECHANISM(mechanism), attributes); - return P11Key.secretKey - (session, keyID, algorithm, significantKeySize, attributes); - } catch (PKCS11Exception e) { - throw new ProviderException("Could not generate key", e); - } finally { - token.releaseSession(session); - } - } - -}