lyu12vS.py 文件源码

def H(x):
    # random oracle
    h = int(hashlib.sha512(str(x)).hexdigest(), 16)
    out = vector([0]*k, Zmod(q))
    for i in range(0, k) :
        out[i] = h%b
        h /= b
        i += 1
    return out