BitcoinECC.py 文件源码

def SignECDSA(self,m):
        #Sign a message. The private key is self.d .
        h=hashlib.new("SHA256")
        h.update(m)
        z=int(h.hexdigest(),16)

        r=0
        s=0
        while not r or not s:
            #k=random.randint(1,self.n-1)
            k=random.SystemRandom().randint(1,self.n-1) # Better random fix
            R=self*k
            R.Normalize()
            r=R.x[0]%self.n
            s=(InvMod(k,self.n)*(z+r*self.d))%self.n

        return (r,s)