sha256加密

{"name": "manu", "birthday": 765331200000, "business":"health"}  # ssj.json文件

def sha256_md5():  # 把json串里的key按照顺序排序，拼成一个字符串，然后md5加密，再sha256加密
    import hashlib
    lis = []
    f = open('ssj.json', encoding='utf8')
    f.seek(0)
    res = eval(f.read())
    for k in sorted(res):
        lis.append(k)
    st = ''.join(lis)
    md = hashlib.md5()
    md.update(st.encode())
    first_md = md.hexdigest()
    ha = hashlib.sha256()
    ha.update(first_md.encode())
    return ha.hexdigest()
print(sha256_md5())