1 files changed, 38 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/crypto/prng/RandomGenerator.java b/core/src/main/java/org/spongycastle/crypto/prng/RandomGenerator.java
new file mode 100644
index 00000000..aa9a3834
--- /dev/null
+++ b/core/src/main/java/org/spongycastle/crypto/prng/RandomGenerator.java
@@ -0,0 +1,38 @@
+package org.spongycastle.crypto.prng;
+
+/**
+ * Generic interface for objects generating random bytes.
+ */
+public interface RandomGenerator
+{
+    /**
+     * Add more seed material to the generator.
+     *
+     * @param seed a byte array to be mixed into the generator's state.
+     */
+    void addSeedMaterial(byte[] seed);
+
+    /**
+     * Add more seed material to the generator.
+     *
+     * @param seed a long value to be mixed into the generator's state.
+     */
+    void addSeedMaterial(long seed);
+
+    /**
+     * Fill bytes with random values.
+     *
+     * @param bytes byte array to be filled.
+     */
+    void nextBytes(byte[] bytes);
+
+    /**
+     * Fill part of bytes with random values.
+     *
+     * @param bytes byte array to be filled.
+     * @param start index to start filling at.
+     * @param len length of segment to fill.
+     */
+    void nextBytes(byte[] bytes, int start, int len);
+
+}