1 files changed, 16 insertions, 0 deletions
diff --git a/programs/pluto/sha1.h b/programs/pluto/sha1.h
new file mode 100644
index 000000000..64b3d2f5d
--- /dev/null
+++ b/programs/pluto/sha1.h
@@ -0,0 +1,16 @@
+/*
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+*/
+
+typedef struct {
+    u_int32_t state[5];
+    u_int32_t count[2];
+    unsigned char buffer[64];
+} SHA1_CTX;
+
+void SHA1Transform(u_int32_t state[5], const unsigned char buffer[64]);
+void SHA1Init(SHA1_CTX* context);
+void SHA1Update(SHA1_CTX* context, const unsigned char* data, u_int32_t len);
+void SHA1Final(unsigned char digest[20], SHA1_CTX* context);