Initial revision

From-SVN: r102074

libjava/classpath/java/security/spec/RSAOtherPrimeInfo.java

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+/* RSAOtherPrimeInfo.java --
+   Copyright (C) 2003, Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package java.security.spec;
+
+import java.math.BigInteger;
+
+/**
+ * This class represents the triplet (prime, exponent, and coefficient) inside
+ * RSA's OtherPrimeInfo structure, as defined in the PKCS#1 v2.1. The ASN.1
+ * syntax of RSA's OtherPrimeInfo is as follows:
+ *
+ * <pre>
+ *  OtherPrimeInfo ::= SEQUENCE {
+ *    prime INTEGER,
+ *    exponent INTEGER,
+ *    coefficient INTEGER
+ *  }
+ * </pre>
+ *
+ * @since 1.4
+ * @see RSAPrivateCrtKeySpec
+ * @see java.security.interfaces.RSAMultiPrimePrivateCrtKey
+ */
+public class RSAOtherPrimeInfo
+{
+  // Constants and fields
+  // --------------------------------------------------------------------------
+
+  private BigInteger prime;
+  private BigInteger primeExponent;
+  private BigInteger crtCoefficient;
+
+  // Constructor(s)
+  // --------------------------------------------------------------------------
+
+  /**
+   * Creates a new <code>RSAOtherPrimeInfo</code> given the prime,
+   * primeExponent, and crtCoefficient as defined in PKCS#1.
+   *
+   * @param prime the prime factor of n.
+   * @param primeExponent the exponent.
+   * @param crtCoefficient the Chinese Remainder Theorem coefficient.
+   * @throws NullPointerException if any of the parameters, i.e. prime,
+   * primeExponent, crtCoefficient, is <code>null</code>.
+   */
+  public RSAOtherPrimeInfo(BigInteger prime, BigInteger primeExponent,
+                           BigInteger crtCoefficient)
+  {
+    super();
+
+    if (prime == null)
+      throw new NullPointerException("prime");
+    if (primeExponent == null)
+      throw new NullPointerException("primeExponent");
+    if (crtCoefficient == null)
+      throw new NullPointerException("crtCoefficient");
+
+    this.prime = prime;
+    this.primeExponent = primeExponent;
+    this.crtCoefficient = crtCoefficient;
+  }
+
+  // Class methods
+  // --------------------------------------------------------------------------
+
+  // Instance methods
+  // --------------------------------------------------------------------------
+
+  /**
+   * Returns the prime.
+   *
+   * @return the prime.
+   */
+  public final BigInteger getPrime()
+  {
+    return this.prime;
+  }
+
+  /**
+   * Returns the prime's exponent.
+   *
+   * @return the primeExponent.
+   */
+  public final BigInteger getExponent()
+  {
+    return this.primeExponent;
+  }
+
+  /**
+   * Returns the prime's crtCoefficient.
+   *
+   * @return the crtCoefficient.
+   */
+  public final BigInteger getCrtCoefficient()
+  {
+    return this.crtCoefficient;
+  }
+}