speck_cpa_cw/cw_firmware/speck.h

#ifndef SPECK_HEADER
#define SPECK_HEADER

#define ER64(x,y,k) (x=ROTR64(x,8), x+=y, x^=k, y=ROTL64(y,3), y^=x)
#define DR64(x,y,k) (y^=x, y=ROTR64(y,3), x^=k, x-=y, x=ROTL64(x,8))
#define ROTL64(x,r) (((x)<<(r)) | (x>>(64-(r))))
#define ROTR64(x,r) (((x)>>(r)) | ((x)<<(64-(r))))

#define u8 uint8_t
#define u32 uint32_t
#define u64 uint64_t
void Words64ToBytes(u64 words[],u8 bytes[],int numwords);
void BytesToWords64(u8 bytes[],u64 words[],int numbytes);
void Speck128256KeySchedule(u64 K[],u64 rk[]);
void Speck128256Encrypt(u64 Pt[],u64 Ct[],u64 rk[]);
void Speck128256Decrypt(u64 Pt[],u64 Ct[],u64 rk[]);
void EncryptBlock(u8 pt[], u8 k[], u8 ct[]);

#endif