1 files changed, 5 insertions, 14 deletions
diff --git a/movement/lib/TOTP-MCU/sha1.h b/movement/lib/TOTP-MCU/sha1.h
index 2257e367..2db8fdf8 100644
--- a/movement/lib/TOTP-MCU/sha1.h
+++ b/movement/lib/TOTP-MCU/sha1.h
@@ -1,25 +1,16 @@
+#ifndef SHA1_H_
+#define SHA1_H_
+
 #include <inttypes.h>
 
 #define HASH_LENGTH 20
 #define BLOCK_LENGTH 64
 
-union _buffer {
-  uint8_t b[BLOCK_LENGTH];
-  uint32_t w[BLOCK_LENGTH/4];
-} buffer;
-union _state {
-  uint8_t b[HASH_LENGTH];
-  uint32_t w[HASH_LENGTH/4];
-} state;
-
-uint8_t bufferOffset;
-uint32_t byteCount;
-uint8_t keyBuffer[BLOCK_LENGTH];
-uint8_t innerHash[HASH_LENGTH];
-
 void init(void);
 void initHmac(const uint8_t* secret, uint8_t secretLength);
 uint8_t* result(void);
 uint8_t* resultHmac(void);
 void write(uint8_t);
 void writeArray(uint8_t *buffer, uint8_t size);
+
+#endif // SHA1_H