From a53fd4148596f5814409e15647714bdd2a71468b Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Thu, 6 Nov 2014 06:54:50 -0800
Subject: Deterministic signing

---
 src/key.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/key.h')

diff --git a/src/key.h b/src/key.h
index 0bb05482c9..463b373153 100644
--- a/src/key.h
+++ b/src/key.h
@@ -121,8 +121,12 @@ public:
      */
     CPubKey GetPubKey() const;
 
-    //! Create a DER-serialized signature.
-    bool Sign(const uint256& hash, std::vector<unsigned char>& vchSig) const;
+    /**
+     * Create a DER-serialized signature.
+     * The test_case parameter tweaks the deterministic nonce, and is only for
+     * testing. It should be zero for normal use.
+     */
+    bool Sign(const uint256& hash, std::vector<unsigned char>& vchSig, uint32_t test_case = 0) const;
 
     /**
      * Create a compact signature (65 bytes), which allows reconstructing the used public key.
-- 
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