first commit

libraries/Arduino-Websocket-Fast/src/sha1.h

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+#ifndef Sha1_h
+#define Sha1_h
+
+#include <inttypes.h>
+#include "Print.h"
+
+#define HASH_LENGTH 20
+#define BLOCK_LENGTH 64
+
+union _buffer {
+  uint8_t b[BLOCK_LENGTH];
+  uint32_t w[BLOCK_LENGTH/4];
+};
+union _state {
+  uint8_t b[HASH_LENGTH];
+  uint32_t w[HASH_LENGTH/4];
+};
+
+class Sha1Class : public Print
+{
+  public:
+    void init(void);
+    void initHmac(const uint8_t* secret, int secretLength);
+    uint8_t* result(void);
+    uint8_t* resultHmac(void);
+    virtual size_t write(uint8_t);
+    using Print::write;
+  private:
+    void pad();
+    void addUncounted(uint8_t data);
+    void hashBlock();
+    uint32_t rol32(uint32_t number, uint8_t bits);
+    _buffer buffer;
+    uint8_t bufferOffset;
+    _state state;
+    uint32_t byteCount;
+    uint8_t keyBuffer[BLOCK_LENGTH];
+    uint8_t innerHash[HASH_LENGTH];
+    
+};
+extern Sha1Class Sha1;
+
+#endif