1 files changed, 64 insertions, 0 deletions
diff --git a/libraries/spongycastle/jce/src/main/java/javax/crypto/KeyGeneratorSpi.java b/libraries/spongycastle/jce/src/main/java/javax/crypto/KeyGeneratorSpi.java
new file mode 100644
index 000000000..dc7ad3da1
--- /dev/null
+++ b/libraries/spongycastle/jce/src/main/java/javax/crypto/KeyGeneratorSpi.java
@@ -0,0 +1,64 @@
+package javax.crypto;
+
+import java.security.SecureRandom;
+import java.security.spec.AlgorithmParameterSpec;
+import java.security.InvalidParameterException;
+import java.security.InvalidAlgorithmParameterException;
+
+/**
+ * This class defines the <i>Service Provider Interface</i> (<b>SPI</b>)
+ * for the <code>KeyGenerator</code> class.
+ * All the abstract methods in this class must be implemented by each 
+ * cryptographic service provider who wishes to supply the implementation
+ * of a key generator for a particular algorithm.
+ *
+ * @see SecretKey
+ */
+public abstract class KeyGeneratorSpi
+{
+    public KeyGeneratorSpi()
+    {
+    }
+
+    /**
+     * Initializes the key generator.
+     * 
+     * @param random the source of randomness for this generator
+     */
+    protected abstract void engineInit(
+        SecureRandom    random);
+
+    /**
+     * Initializes the key generator with the specified parameter
+     * set and a user-provided source of randomness.
+     *
+     * @param params the key generation parameters
+     * @param random the source of randomness for this key generator
+     * @exception InvalidAlgorithmParameterException if <code>params</code> is
+     * inappropriate for this key generator
+     */
+    protected abstract void engineInit(
+        AlgorithmParameterSpec  params,
+        SecureRandom            random)
+    throws InvalidAlgorithmParameterException;
+
+    /**
+     * Initializes this key generator for a certain keysize, using the given
+     * source of randomness.
+     *
+     * @param keysize the keysize. This is an algorithm-specific metric, specified in number of bits.
+     * @param random the source of randomness for this key generator.
+     * @exception InvalidParameterException if keysize is wrong or not supported.
+     */
+    protected abstract void engineInit(
+        int             keysize,
+        SecureRandom    random)
+    throws InvalidParameterException;
+
+    /**
+     * Generates a secret key.
+     *
+     * @return the new key.
+     */
+    protected abstract SecretKey engineGenerateKey();
+}