hashlib 文件校验，MD5动态加盐返回加密后字符

# for循环校验
import hashlib
def check_md5(file):
    ret = hashlib.md5()
    with open(file, mode=‘rb‘) as f1:
        for line in f1:
            ret.update(line)
        return ret.hexdigest()


print(check_md5(‘rock1‘))
print(check_md5(‘rock‘))
print(check_md5(‘rock1‘) == check_md5(‘rock‘))

# while循环每次读取1024字节校验

import hashlib


def check_md5(file):
    ret = hashlib.md5()
    with open(file, mode=‘rb‘) as f1:
        while 1:
            content = f1.read(1024)
            if content:
                ret.update(content)
            else:
                break
        return ret.hexdigest()


print(check_md5(‘rock1‘))
print(check_md5(‘rock‘))
print(check_md5(‘rock1‘) == check_md5(‘rock‘))

import hashlib


def check_md5(s=‘‘):
    # ret = hashlib.md5(‘w‘.encode(‘utf-8‘))
    # print(s[::-2])
    ret = hashlib.md5()
    ret.update(s[::-2].encode(‘utf-8‘))
    ret.update(s.encode(‘utf-8‘))
    return ret.hexdigest()


print(check_md5(‘146123‘))
print(check_md5(‘146123‘))
print(check_md5(‘rock‘) == check_md