1 files changed, 20 insertions, 0 deletions
diff --git a/block-sha1/sha1.h b/block-sha1/sha1.h
new file mode 100644
index 0000000000..c1ae74d3da
--- /dev/null
+++ b/block-sha1/sha1.h
@@ -0,0 +1,20 @@
+/*
+ * Based on the Mozilla SHA1 (see mozilla-sha1/sha1.h),
+ * optimized to do word accesses rather than byte accesses,
+ * and to avoid unnecessary copies into the context array.
+ */
+
+typedef struct {
+	unsigned int H[5];
+	unsigned int W[16];
+	unsigned long long size;
+} blk_SHA_CTX;
+
+void blk_SHA1_Init(blk_SHA_CTX *ctx);
+void blk_SHA1_Update(blk_SHA_CTX *ctx, const void *dataIn, unsigned long len);
+void blk_SHA1_Final(unsigned char hashout[20], blk_SHA_CTX *ctx);
+
+#define git_SHA_CTX	blk_SHA_CTX
+#define git_SHA1_Init	blk_SHA1_Init
+#define git_SHA1_Update	blk_SHA1_Update
+#define git_SHA1_Final	blk_SHA1_Final