1 files changed, 32 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/pqc/crypto/MessageSigner.java b/core/src/main/java/org/bouncycastle/pqc/crypto/MessageSigner.java
new file mode 100644
index 00000000..50243f73
--- /dev/null
+++ b/core/src/main/java/org/bouncycastle/pqc/crypto/MessageSigner.java
@@ -0,0 +1,32 @@
+package org.bouncycastle.pqc.crypto;
+
+import org.bouncycastle.crypto.CipherParameters;
+
+public interface MessageSigner
+{
+    /**
+     * initialise the signer for signature generation or signature
+     * verification.
+     *
+     * @param forSigning true if we are generating a signature, false
+     *                   otherwise.
+     * @param param      key parameters for signature generation.
+     */
+    public void init(boolean forSigning, CipherParameters param);
+
+    /**
+     * sign the passed in message (usually the output of a hash function).
+     *
+     * @param message the message to be signed.
+     * @return the signature of the message
+     */
+    public byte[] generateSignature(byte[] message);
+
+    /**
+     * verify the message message against the signature values r and s.
+     *
+     * @param message the message that was supposed to have been signed.
+     * @param signature the signature of the message
+     */
+    public boolean verifySignature(byte[] message, byte[] signature);
+}