1 files changed, 27 insertions, 0 deletions
diff --git a/src/sha1.h b/src/sha1.h
new file mode 100644
index 0000000..a6cb6e8
--- /dev/null
+++ b/src/sha1.h
@@ -0,0 +1,27 @@
+#ifndef SHA1_H
+#define SHA1_H
+/* ================ sha1.h ================ */
+/*
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+*/
+
+typedef struct {
+    uint32_t state[5];
+    uint32_t count[2];
+    unsigned char buffer[64];
+} SHA1_CTX;
+
+void SHA1Transform(uint32_t state[5], const unsigned char buffer[64]);
+void SHA1Init(SHA1_CTX* context);
+/* 'noinline' attribute is intended to prevent the `-Wstringop-overread` warning
+ * when using gcc-12 later with LTO enabled. It may be removed once the
+ * bug[https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80922] is fixed. */
+__attribute__((noinline)) void SHA1Update(SHA1_CTX* context, const unsigned char* data, uint32_t len);
+void SHA1Final(unsigned char digest[20], SHA1_CTX* context);
+
+#ifdef REDIS_TEST
+int sha1Test(int argc, char **argv, int flags);
+#endif
+#endif