前言

MD5是一种消息摘要算法，它把任意长度的消息作为输入，经过处理后输出固定长度的输出结果，通常是128位的哈希值。MD5常被用于对用户的密码进行加密，用于验证用户的身份。但是MD5加密不是完全安全的，因为MD5加密后的结果是固定的，如果黑客得到了加密后的结果，他们可以通过暴力破解的方式尝试所有可能的密码来获取原始密码。

为了增加密码的安全性，一些网站采用了MD5加盐的方式，即在原始密码的基础上增加一段随机的字符串，再进行MD5加密。这样即使黑客得到了加密后的结果，也无法通过暴力破解的方式来获取原始密码，因为黑客没有获得加盐的字符串。

然而，MD5加盐也不是绝对安全的，因为黑客有可能通过彩虹表等方法破解加盐后的密码。彩虹表是一种预先计算出所有可能的密码和对应的哈希值的表，如果黑客得到了加盐后的哈希值，他们可以在彩虹表中找到对应的原始密码。因此，即使采用了MD5加盐，密码也应该尽可能复杂，避免被黑客破解。

MD5算法具有以下特点：

1、压缩性：任意长度的数据，算出的MD5值长度都是固定的。

2、容易计算：从原数据计算出MD5值很容易。

3、抗修改性：对原数据进行任何改动，哪怕只修改1个字节，所得到的MD5值都有很大区别。

4、强抗碰撞：已知原数据和其MD5值，想找到一个具有相同MD5值的数据（即伪造数据）是非常困难的。

MD5的作用是让大容量信息在用数字签名软件签署私人密钥前被"压缩"成一种保密的格式（就是把一个任意长度的字节串变换成一定长的16进制数字串）。

大家都知道，地球上任何人都有自己独一无二的指纹，这常常成为司法机关鉴别罪犯身份最值得信赖的方法；与之类似，MD5就可以为任何文件（不管其大小、格式、数量）产生一个同样独一无二的MD5“数字指纹”，如果任何人对文件做了任何改动，其MD5也就是对应的“数字指纹”都会发生变化。

一、超级密码

1.打开题目

2.解题

# coding:utf-8
import hashlib
from numba import jit
@jit
def run():
    password =["f09ebdb2bb9f5eb4fbd12aad96e1e929.p5Zg6LtD","6cea25448314ddb70d98708553fc0928.ZwbWnG0j","2629906b029983a7c524114c2dd9cc36.1JE25XOn","2e854eb55586dc58e6758cfed62dd865.ICKTxe5j","7b073411ee21fcaf177972c1a644f403.0wdRCo1W","6795d1be7c63f30935273d9eb32c73e3.EuMN5GaH","d10f5340214309e3cfc00bbc7a2fa718.aOrND9AB","8e0dc02301debcc965ee04c7f5b5188b.uQg6JMcx","4fec71840818d02f0603440466a892c9.XY5QnHmU","ee8f46142f3b5d973a01079f7b47e81c.zMVNlHOr","e4d9e1e85f3880aedb7264054acd1896.TqRhn1Yp","0fd046d8ecddefc66203f6539cac486b.AR5lI2He","f6326f02adaa31a66ed06ceab2948d01.Aax2fIPl","720ba10d446a337d79f1da8926835a49.ZAOYDPR2","06af8bcc454229fe5ca09567a9071e62.hvcECKYs","79f58ca7a81ae2775c2c2b73beff8644.TgFacoR3","46aaa5a7fef5e250a2448a8d1257e9cf.GLYu0NO4","2149ac87790dd0fe1b43f40d527e425a.5Xk2O1sG","d15a36d8be574ac8fe64689c728c268e.aZikhUEy","ff7bced91bd9067834e3ad14cc1464cd.E7UROqXn","8cc0437187caf10e5eda345cb6296252.XPin3mVB","5cfcdca4a9cb2985a0b688406617689e.nsGqoafv","5a7dfa8bc7b5dfbb914c0a78ab2760c6.YC1qZUFR","8061d8f222167fcc66569f6261ddd3cc.wNgQi615","3d8a02528c949df7405f0b48afe4a626.CO2NMusb","70651acbc8bd027529bbcccdbf3b0f14.CAXVjFMd","a9dbe70e83596f2d9210970236bdd535.TL6sjEuK","9ed6ef5780f705ade6845b9ef349eb8f.tJ90ibsz","4b46fac0c41b0c6244523612a6c7ac4a.VTjOSNmw","8141e6ecb4f803426d1db8fbeb5686ef.lh75cdNC","df803949fd13f5f7d7dd8457a673104b.V39sEvYX","19052cc5ef69f90094753c2b3bbcd41d.YwoGExpg","cf8591bdccfaa0cdca652f1d31dbd70f.pJCLui49","66e10e3d4a788c335282f42b92c760a1.NQCZoIhj","94c3ae5bcc04c38053106916f9b99bda.vOktelLQ","e67e88646758e465697c15b1ef164a8d.x0hwJGHj","84d3d828e1a0c14b5b095bedc23269fb.2HVWe9fM","264a9e831c3401c38021ba3844479c3f.Cx4og6IW","ed0343dec184d9d2c30a9b9c1c308356.g2rqmPkT","ad5ba8dc801c37037350578630783d80.pFK2JDT5","3f588bedb704da9448e68fe81e42bca6.4ANDOiau","970c9cf3cad3dfa7926f53ccaae89421.R6ML7Qy8","e0a097b7cceaa7a8949fe039884e4a2d.dul2ynqL","7df505218102c64b1fe4fa5981ddb6fa.jPeoyS57","fd4f6043da1f7d5dca993c946ef6cd7c.6p9CwGaY","5fe6d99b9a2824949279187c246c9c30.OGQ2J57y","135b150ad513a961089bb1c05085a3d9.h0dw1Fro","ad6af4fb623b3c51181a371911667fed.HbQT4dRz","c9fa4b0db317d88e2b10060225e92494.ebVnpMzS","d0deab17d115bd6fdce8592bb3667643.bL5zwgvX","006f0cb3a422716692f143f28eb0d187.NHXg1Fof","ddc125de34da1a6ec0cbe401f147bc8f.GDai9Y0n","be5052053c5a806e8f56ed64e0d67821.40alyH3w","aaf18ac446b8c385c4112c10ae87e7dc.ZJQzuIL0","a2db20a4b7386dc2d8c30bf9a05ceef7.QnpOlPWH","8a4fbc32a3251bb51072d51969ba5d33.rtcbipeq","5e35d2c9675ed811880cea01f268e00f.i1Hbne6h","9da23007699e832f4e9344057c5e0bd3.EtbGpMSW","f09233683d05171420f963fc92764e84.fxHoinEe","4feabf309c5872f3cca7295b3577f2a8.KymkJXqA","9b94da2fa9402a3fdb4ff15b9f3ba4d2.G3Tdr1Pg","b3cd8d6b53702d733ba515dec1d770c5.Y71LJWZz","6a5b3b2526bb7e94209c487585034534.rIwb4oxt","e9728ef776144c25ba0155a0faab2526.e1sOXSb8","d41a5e7a98e28d76dbd183df7e3bcb49.36bedvia","81d5ebfea6aff129cf515d4e0e5f8360.dDG4qTjW"]
    n=1234567880
    while(n<10000000000):
        for j in range(0,66):
            salt = password[j][33:]
            md5 = password[j][:32]
            mingwen = "{FLAG:"+str(n)+"}"+password[j][33:]
            miwen = hashlib.md5(mingwen.encode('utf-8')).hexdigest()
            if (miwen == md5) :
                print(mingwen)
                print(password[j])
                n=10000000000
                break
        print(n)
        n=n+1
​
run()
​