1 /* 2 * Copyright (c) 2003, 2013, 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.rsa; 27 28 import java.io.IOException; 29 import java.math.BigInteger; 30 31 import java.security.*; 32 import java.security.interfaces.*; 33 34 import sun.security.util.*; 35 import sun.security.pkcs.PKCS8Key; 36 37 /** 38 * Key implementation for RSA private keys, non-CRT form (modulus, private 39 * exponent only). For CRT private keys, see RSAPrivateCrtKeyImpl. We need 40 * separate classes to ensure correct behavior in instanceof checks, etc. 41 * 42 * Note: RSA keys must be at least 512 bits long 43 * 44 * @see RSAPrivateCrtKeyImpl 45 * @see RSAKeyFactory 46 * 47 * @since 1.5 48 * @author Andreas Sterbenz 49 */ 50 public final class RSAPrivateKeyImpl extends PKCS8Key implements RSAPrivateKey { 51 52 private static final long serialVersionUID = -33106691987952810L; 53 54 private final BigInteger n; // modulus 55 private final BigInteger d; // private exponent 56 57 /** 58 * Construct a key from its components. Used by the 59 * RSAKeyFactory and the RSAKeyPairGenerator. 60 */ 61 RSAPrivateKeyImpl(BigInteger n, BigInteger d) throws InvalidKeyException { 62 this.n = n; 63 this.d = d; 64 RSAKeyFactory.checkRSAProviderKeyLengths(n.bitLength(), null); 65 // generate the encoding 66 algid = RSAPrivateCrtKeyImpl.rsaId; 67 try { 68 DerOutputStream out = new DerOutputStream(); 69 out.putInteger(0); // version must be 0 70 out.putInteger(n); 71 out.putInteger(0); 72 out.putInteger(d); 73 out.putInteger(0); 74 out.putInteger(0); 75 out.putInteger(0); 76 out.putInteger(0); 77 out.putInteger(0); 78 DerValue val = 79 new DerValue(DerValue.tag_Sequence, out.toByteArray()); 80 key = val.toByteArray(); 81 } catch (IOException exc) { 82 // should never occur 83 throw new InvalidKeyException(exc); 84 } 85 } 86 87 // see JCA doc 88 public String getAlgorithm() { 89 return "RSA"; 90 } 91 92 // see JCA doc 93 public BigInteger getModulus() { 94 return n; 95 } 96 97 // see JCA doc 98 public BigInteger getPrivateExponent() { 99 return d; 100 } 101 } | 1 /* 2 * Copyright (c) 2003, 2018, 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.rsa; 27 28 import java.io.IOException; 29 import java.math.BigInteger; 30 31 import java.security.*; 32 import java.security.spec.AlgorithmParameterSpec; 33 import java.security.interfaces.*; 34 35 import sun.security.util.*; 36 import sun.security.x509.AlgorithmId; 37 import sun.security.pkcs.PKCS8Key; 38 39 /** 40 * RSA private key implementation for "RSA", "RSASSA-PSS" algorithms in non-CRT 41 * form (modulus, private exponent only). For CRT private keys, see 42 * RSAPrivateCrtKeyImpl. We need separate classes to ensure correct behavior 43 * in instanceof checks, etc. 44 * 45 * Note: RSA keys must be at least 512 bits long 46 * 47 * @see RSAPrivateCrtKeyImpl 48 * @see RSAKeyFactory 49 * 50 * @since 1.5 51 * @author Andreas Sterbenz 52 */ 53 public final class RSAPrivateKeyImpl extends PKCS8Key implements RSAPrivateKey { 54 55 private static final long serialVersionUID = -33106691987952810L; 56 57 private final BigInteger n; // modulus 58 private final BigInteger d; // private exponent 59 60 // optional parameters associated with this RSA key 61 // specified in the encoding of its AlgorithmId. 62 // must be null for "RSA" keys. 63 private final AlgorithmParameterSpec keyParams; 64 65 /** 66 * Construct a key from its components. Used by the 67 * RSAKeyFactory and the RSAKeyPairGenerator. 68 */ 69 RSAPrivateKeyImpl(AlgorithmId rsaId, BigInteger n, BigInteger d) 70 throws InvalidKeyException { 71 RSAKeyFactory.checkRSAProviderKeyLengths(n.bitLength(), null); 72 73 this.n = n; 74 this.d = d; 75 this.keyParams = RSAUtil.getParamSpec(rsaId); 76 77 // generate the encoding 78 algid = rsaId; 79 try { 80 DerOutputStream out = new DerOutputStream(); 81 out.putInteger(0); // version must be 0 82 out.putInteger(n); 83 out.putInteger(0); 84 out.putInteger(d); 85 out.putInteger(0); 86 out.putInteger(0); 87 out.putInteger(0); 88 out.putInteger(0); 89 out.putInteger(0); 90 DerValue val = 91 new DerValue(DerValue.tag_Sequence, out.toByteArray()); 92 key = val.toByteArray(); 93 } catch (IOException exc) { 94 // should never occur 95 throw new InvalidKeyException(exc); 96 } 97 } 98 99 // see JCA doc 100 @Override 101 public String getAlgorithm() { 102 return algid.getName(); 103 } 104 105 // see JCA doc 106 @Override 107 public BigInteger getModulus() { 108 return n; 109 } 110 111 // see JCA doc 112 @Override 113 public BigInteger getPrivateExponent() { 114 return d; 115 } 116 117 // see JCA doc 118 @Override 119 public AlgorithmParameterSpec getParams() { 120 return keyParams; 121 } 122 123 // return a string representation of this key for debugging 124 @Override 125 public String toString() { 126 return "Sun " + getAlgorithm() + " private key, " + n.bitLength() 127 + " bits" + "\n params: " + keyParams + "\n modulus: " + n 128 + "\n private exponent: " + d; 129 } 130 } |