| Frames | No Frames |
1: /* PSSParameterSpec.java -- 2: Copyright (C) 2003, Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: package java.security.spec; 39: 40: import java.math.BigInteger; 41: 42: /** 43: * This class represents an RSA multi-prime private key, as defined in the 44: * PKCS#1 v2.1, using the <i>Chinese Remainder Theorem</i> (CRT) information 45: * values. 46: * 47: * @since 1.4 48: * @see java.security.Key 49: * @see java.security.KeyFactory 50: * @see KeySpec 51: * @see PKCS8EncodedKeySpec 52: * @see RSAPrivateKeySpec 53: * @see RSAPublicKeySpec 54: * @see RSAOtherPrimeInfo 55: */ 56: public class RSAMultiPrimePrivateCrtKeySpec extends RSAPrivateKeySpec 57: { 58: // Constants and fields 59: // -------------------------------------------------------------------------- 60: 61: private BigInteger publicExponent; 62: private BigInteger primeP; 63: private BigInteger primeQ; 64: private BigInteger primeExponentP; 65: private BigInteger primeExponentQ; 66: private BigInteger crtCoefficient; 67: private RSAOtherPrimeInfo[] otherPrimeInfo; 68: 69: // Constructor(s) 70: // -------------------------------------------------------------------------- 71: 72: /** 73: * Constructs a new instance of <code>RSAMultiPrimePrivateCrtKeySpec</code> 74: * given the various PKCS#1 v2.1 parameters. 75: * 76: * <p>Note that <code>otherPrimeInfo</code> is cloned when constructing this 77: * object.</p> 78: * 79: * @param modulus 80: * the modulus n. 81: * @param publicExponent 82: * the public exponent e. 83: * @param privateExponent 84: * the private exponent d. 85: * @param primeP 86: * the prime factor p of n. 87: * @param primeQ 88: * the prime factor q of n. 89: * @param primeExponentP 90: * this is d mod (p-1). 91: * @param primeExponentQ 92: * this is d mod (q-1). 93: * @param crtCoefficient 94: * the Chinese Remainder Theorem coefficient q-1 mod p. 95: * @param otherPrimeInfo 96: * triplets of the rest of primes, <code>null</code> can be 97: * specified if there are only two prime factors (p and q). 98: * @throws NullPointerException 99: * if any of the parameters is <code>null</code>. 100: * @throws IllegalArgumentException 101: * if an empty <code>otherPrimeInfo</code> is specified. 102: */ 103: public RSAMultiPrimePrivateCrtKeySpec(BigInteger modulus, 104: BigInteger publicExponent, 105: BigInteger privateExponent, 106: BigInteger primeP, 107: BigInteger primeQ, 108: BigInteger primeExponentP, 109: BigInteger primeExponentQ, 110: BigInteger crtCoefficient, 111: RSAOtherPrimeInfo[] otherPrimeInfo) 112: { 113: super(modulus, privateExponent); 114: 115: if (modulus == null) 116: throw new NullPointerException("modulus"); 117: if (publicExponent == null) 118: throw new NullPointerException("publicExponent"); 119: if (privateExponent == null) 120: throw new NullPointerException("privateExponent"); 121: if (primeP == null) 122: throw new NullPointerException("primeP"); 123: if (primeQ == null) 124: throw new NullPointerException("primeQ"); 125: if (primeExponentP == null) 126: throw new NullPointerException("primeExponentP"); 127: if (primeExponentQ == null) 128: throw new NullPointerException("primeExponentQ"); 129: if (crtCoefficient == null) 130: throw new NullPointerException("crtCoefficient"); 131: if (otherPrimeInfo != null) 132: if (otherPrimeInfo.length == 0) 133: throw new IllegalArgumentException(); 134: else 135: this.otherPrimeInfo = (RSAOtherPrimeInfo[]) otherPrimeInfo.clone(); 136: 137: this.publicExponent = publicExponent; 138: this.primeP = primeP; 139: this.primeQ = primeQ; 140: this.primeExponentP = primeExponentP; 141: this.primeExponentQ = primeExponentQ; 142: this.crtCoefficient = crtCoefficient; 143: } 144: 145: // Class methods 146: // -------------------------------------------------------------------------- 147: 148: // Instance methods 149: // -------------------------------------------------------------------------- 150: 151: /** 152: * Returns the public exponent. 153: * 154: * @return the public exponent. 155: */ 156: public BigInteger getPublicExponent() 157: { 158: return this.publicExponent; 159: } 160: 161: /** 162: * Returns the prime p. 163: * 164: * @return the prime p. 165: */ 166: public BigInteger getPrimeP() 167: { 168: return this.primeP; 169: } 170: 171: /** 172: * Returns the prime q. 173: * 174: * @return the prime q. 175: */ 176: public BigInteger getPrimeQ() 177: { 178: return this.primeQ; 179: } 180: 181: /** 182: * Returns d mod (p-1). 183: * 184: * @return d mod (p-1). 185: */ 186: public BigInteger getPrimeExponentP() 187: { 188: return this.primeExponentP; 189: } 190: 191: /** 192: * Returns d mod (q-1). 193: * 194: * @return d mod (q-1). 195: */ 196: public BigInteger getPrimeExponentQ() 197: { 198: return this.primeExponentQ; 199: } 200: 201: /** 202: * Returns the CRT Coefficient q-1 mod p. 203: * 204: * @return the CRT Coefficient q-1 mod p. 205: */ 206: public BigInteger getCrtCoefficient() 207: { 208: return this.crtCoefficient; 209: } 210: 211: /** 212: * Returns a clone of <code>otherPrimeInfo</code> or <code>null</code> if 213: * it was <code>null</code> at construction time. 214: * 215: * @return a cloned copy of <code>otherPrimeInfo</code>. 216: */ 217: public RSAOtherPrimeInfo[] getOtherPrimeInfo() 218: { 219: return this.otherPrimeInfo == null 220: ? null 221: : (RSAOtherPrimeInfo[]) this.otherPrimeInfo.clone(); 222: } 223: }