From d0c96328833127284574bfef26f96aa2e4afc91a Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Tue, 26 Sep 2017 18:29:42 -0700
Subject: Specialized double sha256 for 64 byte inputs

---
 src/crypto/sha256.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/crypto/sha256.h')

diff --git a/src/crypto/sha256.h b/src/crypto/sha256.h
index dd30fe396f..31b2b3b3df 100644
--- a/src/crypto/sha256.h
+++ b/src/crypto/sha256.h
@@ -31,4 +31,11 @@ public:
  */
 std::string SHA256AutoDetect();
 
+/** Compute multiple double-SHA256's of 64-byte blobs.
+ *  output:  pointer to a blocks*32 byte output buffer
+ *  input:   pointer to a blocks*64 byte input buffer
+ *  blocks:  the number of hashes to compute.
+ */
+void SHA256D64(unsigned char* output, const unsigned char* input, size_t blocks);
+
 #endif // BITCOIN_CRYPTO_SHA256_H
-- 
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