polyone.h

tinyos密钥管理组件 用在tinyos仿真里的

enum{ T=8, // T is t-degree (a0, a1,a2,.....at)
      tt=((T+1)>>4)+1, // the number of bytes uesed to store high bit of coeffocient
      key_length=64,
      SF=30, // SF is the number of polynomials in the set F 
      ss=5, // ss is the number of polynomials shared for every sensor
};	

 /* the structure bivariatePoly is used to express every bivariate polynomial, it includes 
     each polynomial's unique ID: poly_id, and four arrays: poly_ceft1,2,3,4 that store
     the coefficients of that polynomial. */ 
typedef struct {
   uint8_t poly_id;
   uint16_t poly_ceft1[(T+1+tt)*(T+1)];
   uint16_t poly_ceft2[(T+1+tt)*(T+1)];
   uint16_t poly_ceft3[(T+1+tt)*(T+1)];
   uint16_t poly_ceft4[(T+1+tt)*(T+1)];
} BivariatePoly;

// the share polynomial's structure of every sensor 
typedef struct {
   uint8_t poly_id;
   uint16_t poly_ceft1[T+1+tt];
   uint16_t poly_ceft2[T+1+tt];
   uint16_t poly_ceft3[T+1+tt];
   uint16_t poly_ceft4[T+1+tt];
} PolyShare;

typedef struct {
  PolyShare subc;
  PolyShare subr;
} Secret_Cefts;