1 files changed, 24 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/Committer.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/Committer.java
new file mode 100644
index 000000000..777486645
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/Committer.java
@@ -0,0 +1,24 @@
+package org.spongycastle.crypto;
+
+/**
+ * General interface fdr classes that produce and validate commitments.
+ */
+public interface Committer
+{
+    /**
+     * Generate a commitment for the passed in message.
+     *
+     * @param message the message to be committed to,
+     * @return a Commitment
+     */
+    Commitment commit(byte[] message);
+
+    /**
+     * Return true if the passed in commitment represents a commitment to the passed in maessage.
+     *
+     * @param commitment a commitment previously generated.
+     * @param message the message that was expected to have been committed to.
+     * @return true if commitment matches message, false otherwise.
+     */
+    boolean isRevealed(Commitment commitment, byte[] message);
+}