1 files changed, 98 insertions, 0 deletions
diff --git a/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/PSource.java b/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/PSource.java
new file mode 100644
index 000000000..03016e1f2
--- /dev/null
+++ b/libraries/spongycastle/jce/src/main/java/javax/crypto/spec/PSource.java
@@ -0,0 +1,98 @@
+package javax.crypto.spec;
+
+/**
+ * This class specifies the source for encoding input P in OAEP Padding, as
+ * defined in the {@link http://www.ietf.org/rfc/rfc3447.txt PKCS #1} standard.
+ * 
+ * <pre>
+ *  
+ *  PKCS1PSourceAlgorithms    ALGORITHM-IDENTIFIER ::= {
+ *  { OID id-pSpecified PARAMETERS OCTET STRING },
+ *  ...  -- Allows for future expansion --
+ *  }
+ * </pre>
+ */
+public class PSource
+{
+    /**
+     * This class is used to explicitly specify the value for encoding input P
+     * in OAEP Padding.
+     * 
+     */
+    public final static class PSpecified
+        extends PSource
+    {
+        private byte[] p;
+
+        /**
+         * The encoding input P whose value equals byte[0].
+         */
+        public static final PSpecified DEFAULT = new PSpecified(new byte[0]);
+
+        /**
+         * Constructs the source explicitly with the specified value p as the
+         * encoding input P.
+         * 
+         * @param p the value of the encoding input. The contents of the array
+         *            are copied to protect against subsequent modification.
+         * @throws NullPointerException if p is null.
+         */
+        public PSpecified(byte[] p)
+        {
+            super("PSpecified");
+            if (p == null)
+            {
+                throw new NullPointerException("The encoding input is null");
+            }
+            this.p = copyOf(p);
+        }
+
+        /**
+         * Returns the value of encoding input P.
+         * 
+         * @return the value of encoding input P. A new array is returned each
+         *         time this method is called.
+         */
+        public byte[] getValue()
+        {
+            return copyOf(p);
+        }
+
+        private byte[] copyOf(byte[] b)
+        {
+            byte[] tmp = new byte[b.length];
+
+            System.arraycopy(b, 0, tmp, 0, b.length);
+
+            return tmp;
+        }
+    }
+
+    private String pSrcName;
+
+    /**
+     * Constructs a source of the encoding input P for OAEP padding as defined
+     * in the PKCS #1 standard using the specified PSource algorithm.
+     * 
+     * @param pSrcName the algorithm for the source of the encoding input P.
+     * @throws NullPointerException if pSrcName is null.
+     */
+    protected PSource(String pSrcName)
+    {
+        if (pSrcName == null)
+        {
+            throw new NullPointerException("pSrcName is null");
+        }
+        this.pSrcName = pSrcName;
+    }
+
+    /**
+     * Returns the PSource algorithm name.
+     * 
+     * @return the PSource algorithm name.
+     */
+    public String getAlgorithm()
+    {
+        return pSrcName;
+    }
+}