8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/java/security/spec/DSAGenParameterSpec.java

@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2012, 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 java.security.spec;
+
+/**
+ * This immutable class specifies the set of parameters used for
+ * generating DSA parameters as specified in
+ * <a href="http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf">FIPS 186-3 Digital Signature Standard (DSS)</a>.
+ *
+ * @see AlgorithmParameterSpec
+ *
+ * @since 1.8
+ */
+public final class DSAGenParameterSpec implements AlgorithmParameterSpec {
+
+    private final int pLen;
+    private final int qLen;
+    private final int seedLen;
+
+    /**
+     * Creates a domain parameter specification for DSA parameter
+     * generation using {@code primePLen} and {@code subprimeQLen}.
+     * The value of {@code subprimeQLen} is also used as the default
+     * length of the domain parameter seed in bits.
+     * @param primePLen the desired length of the prime P in bits.
+     * @param subprimeQLen the desired length of the sub-prime Q in bits.
+     * @exception IllegalArgumentException if {@code primePLen}
+     * or {@code subprimeQLen} is illegal per the specification of
+     * FIPS 186-3.
+     */
+    public DSAGenParameterSpec(int primePLen, int subprimeQLen) {
+        this(primePLen, subprimeQLen, subprimeQLen);
+    }
+
+    /**
+     * Creates a domain parameter specification for DSA parameter
+     * generation using {@code primePLen}, {@code subprimeQLen},
+     * and {@code seedLen}.
+     * @param primePLen the desired length of the prime P in bits.
+     * @param subprimeQLen the desired length of the sub-prime Q in bits.
+     * @param seedLen the desired length of the domain parameter seed in bits,
+     * shall be equal to or greater than {@code subprimeQLen}.
+     * @exception IllegalArgumentException if {@code primePLenLen},
+     * {@code subprimeQLen}, or {@code seedLen} is illegal per the
+     * specification of FIPS 186-3.
+     */
+    public DSAGenParameterSpec(int primePLen, int subprimeQLen, int seedLen) {
+        switch (primePLen) {
+        case 1024:
+            if (subprimeQLen != 160) {
+                throw new IllegalArgumentException
+                    ("subprimeQLen must be 160 when primePLen=1024");
+            }
+            break;
+        case 2048:
+            if (subprimeQLen != 224 && subprimeQLen != 256) {
+               throw new IllegalArgumentException
+                   ("subprimeQLen must be 224 or 256 when primePLen=2048");
+            }
+            break;
+        case 3072:
+            if (subprimeQLen != 256) {
+                throw new IllegalArgumentException
+                    ("subprimeQLen must be 256 when primePLen=3072");
+            }
+            break;
+        default:
+            throw new IllegalArgumentException
+                ("primePLen must be 1024, 2048, or 3072");
+        }
+        if (seedLen < subprimeQLen) {
+            throw new IllegalArgumentException
+                ("seedLen must be equal to or greater than subprimeQLen");
+        }
+        this.pLen = primePLen;
+        this.qLen = subprimeQLen;
+        this.seedLen = seedLen;
+    }
+
+    /**
+     * Returns the desired length of the prime P of the
+     * to-be-generated DSA domain parameters in bits.
+     * @return the length of the prime P.
+     */
+    public int getPrimePLength() {
+        return pLen;
+    }
+
+    /**
+     * Returns the desired length of the sub-prime Q of the
+     * to-be-generated DSA domain parameters in bits.
+     * @return the length of the sub-prime Q.
+     */
+    public int getSubprimeQLength() {
+        return qLen;
+    }
+
+    /**
+     * Returns the desired length of the domain parameter seed in bits.
+     * @return the length of the domain parameter seed.
+     */
+    public int getSeedLength() {
+        return seedLen;
+    }
+}