Python 实现 XECryption algorithm 加密和解密 （可以加密信 文字 内容）

这是从公司的首席执行官发送给首席生态督察塞缪尔史密斯。然而，它是加密的，我似乎不能解码它使用任何我的基本解密工具。我已经缩小到用于加密的算法，但它超出了我的范围。我希望你能看看。  这是一封信 ：

I believe this document to be encrypted using the XECryption algorithm.
Please recover the original text of this document and return it to me.

.296.294.255.268.313.278.311.270.290.305.322.252.276.286.301.305.264.301.251.269.274.311.304.
230.280.264.327.301.301.265.287.285.306.265.282.319.235.262.278.249.239.284.237.249.289.250.
282.240.256.287.303.310.314.242.302.289.268.315.264.293.261.298.310.242.253.299.278.272.333.
272.295.306.276.317.286.250.272.272.274.282.308.262.285.326.321.285.270.270.241.283.305.319.
246.263.311.299.295.315.263.304.279.286.286.299.282.285.289.298.277.292.296.282.267.245.304.
322.252.265.313.288.310.281.272.266.243.285.309.295.269.295.308.275.316.267.283.311.300.252.
270.318.288.266.276.252.313.280.288.258.272.329.321.291.271.279.250.265.261.293.319.309.303.
260.266.291.237.299.286.293.279.267.320.290.265.308.278.239.277.314.300.253.274.309.289.280.
279.302.307.317.252.261.291.311.268.262.329.312.271.294.291.291.281.282.292.288.240.248.306.
277.298.295.267.312.284.265.294.321.260.293.310.300.307.263.304.297.276.262.291.241.284.312.
277.276.265.323.280.257.257.303.320.255.291.292.290.270.267.345.264.291.312.295.269.297.280.
290.224.308.313.240.308.311.247.284.311.268.289.266.316.299.269.299.298.265.298.262.260.337.
320.285.265.273.307.297.282.287.225.302.277.288.284.310.278.255.263.276.283.322.273.300.264.
302.312.289.262.236.278.280.286.292.298.296.313.258.300.280.300.260.274.329.288.272.316.256.
259.279.297.296.283.273.286.320.287.313.272.301.311.260.302.261.304.280.264.328.259.259.347.
245.291.258.289.270.300.301.318.251.305.278.290.311.280.281.293.313.259.300.262.315.263.319.
285.282.297.283.290.293.280.237.234.323.289.305.279.314.274.291.309.273.294.249.283.262.271.
286.310.305.306.261.298.282.282.307.287.285.305.297.275.306.280.292.291.284.301.278.293.296.
277.301.281.274.315.281.254.251.289.313.307.244.256.302.301.317.305.239.316.274.277.296.269.
305.301.279.287.317.284.277.305.298.264.304.286.273.275.293.309.286.282.240.287.239.268.269.
267.315.311.292.270.271.272.336.282.237.275.316.306.239.305.314.240.296.306.270.247.245.302.
317.316.241.291.310.266.274.274.313.288.262.319.280.276.238.297.295.287.285.288.301.272.275.
247.305.292.286.272.310.291.301.322.256.315.298.263.281.276.237.294.284.296.284.302.273.298.
287.298.301.265.305.270.315.278.283.302.287.263.270.345.258.270.266.302.309.262.260.277.327.
263.277.254.283.276.239.272.264.276.279.264.267.298.264.244.245.273.292.289.273.248.259.263.
288.290.294.210.288.268.311.318.312.242.285.293.216.262.276.340.292.299.275.259.293.311.234.
266.294.278.307.286.267.307.285.269.310.288.274.270.326.273.276.311.304.267.302.318.265.299.
263.283.248.257.314.288.321.321.236.284.283.227.320.312.246.261.289.316.288.263.312.241.265.
288.298.286.287.274.306.279.276.289.307.303.293.281.298.317.252.312.283.278.263.304.305.258.
266.270.294.286.293.290.291.291.258.254.282.282.283.313.268.282.316.310.299.254.264.234.296.
270.265.326.288.292.293.321.305.250.320.299.253.270.296.297.298.266.312.234.273.287.309.286.
278.269.279.316.284.276.234.293.255.267.242.253.318.270.246.278.292.285.282.314.266.292.286.
263.313.249.290.255.289.264.292.301.299.278.291.292.225.250.261.283.303.262.264.264.303.299.
297.274.288.267.293.316.320.317.233.303.258.302.271.283.323.247.279.268.312.269.297.313.280.
280.273.266.332.276.313.284.281.316.279.290.273.313.308.305.260.302.306.273.234.279.281.284.
298.278.259.290.314.275.264.339.293.322.266.261.296.306.277.275.311.284.270.318.259.249.286.
292.301.285.280.303.283.287.299.277.273.293.228.311.283.272.304.292.277.271.306.302.278.298.
300.287.281.309.243.272.279.282.300.291.295.284.285.252.291.251.285.283.245.250.252.318.298.
277.235.288.259.263.278.274.307.261.260.350.250.288.256.282.316.261.285.295.292.300.298.264.
245.241.308.301.261.253.289.264.267.300.262.248.287.257.266.275.287.297.320.287.264.279.297.
232.231.256.288.243.252.277.274.245.256.253.229.290.263.305.278.260.294.312.283.301.275.276.
299.297.312.275.282.294.272.228.302.324.257.261.286.326.280.283.316.294.254.258.275.264.236.
240.277.255.231.258.286.242.277.253.296.290.250.314.320.239.292.313.261.294.261.317.273.285.
236.292.282.271.264.297.300.272.308.299.300.269.301.269.317.284.286.262.315.276.279.328.269.
254.252.232.272.268.309.273.264.296.305.272.267.291.324.302.297.268.268.263.298.300.261.312.
241.254.299.280.263.292.260.301.311.317.297.248.314.272.293.298.281.298.276.311.291.297.318.
261.274.300.293.297.267.295.261.275.334.289.238.267.289.283.257.300.262.304.311.278.274.265.
261.345.301.296.270.273.299.289.274.272.313.282.268.320.287.320.270

上面是加密内容：

先看加密实现：

import random

def jiami(shuju,miyao):
    if miyao == '':
        zhi = []
        for i in shuju:
            ascii_he = ord(i)
            a = random.randint(0, ascii_he)
            b = random.randint(ascii_he - a, ascii_he)
            c = ascii_he - a - b
            he = '.' + str(a) + '.' + str(b) + '.' + str(c)
            zhi.append(he)
        zhi= ''.join(zhi)
        with open('jiami_jieguo.txt','w') as f:
            f.write(zhi )
        print(zhi)
    else:
        zhi = []
        t = 0
        for i in miyao:
            t = t + ord(i)
        for i in shuju:
            ascii_he = ord(i)
            ascii_he = t + ascii_he
            a = random.randint(0, ascii_he)
            b = random.randint(ascii_he - a, ascii_he)
            c = ascii_he - a - b
            he = '.' + str(a) + '.' + str(b) + '.' + str(c)
            zhi.append(he)
        zhi = ''.join(zhi)
        with open('jiami_jieguo.txt', 'w') as f:
            f.write(zhi)
        print(zhi)


#shuru = input('请输入加密值：')
miyao = input('请输入密钥：')
with open('加密.txt','r') as f:
    shuru = f.read()
    jiami(shuru,miyao)

可以选择密钥加密或者不选择密钥加密。

 附带改良版加密，效果一样更加真实，可以用下面解密：

import random

def jiami(shuju,miyao):
    if miyao == '':
        zhi = []
        for i in shuju:
            ascii_he = ord(i)
            a = random.randint(ascii_he//3.5 , ascii_he//2.5)
            b = random.randint(ascii_he//3.5, ascii_he//2.5)
            c = ascii_he - a - b
            he = '.' + str(a) + '.' + str(b) + '.' + str(c)
            zhi.append(he)
        zhi= ''.join(zhi)
        zhi = zhi.split('.')
        step = 24
        b = [zhi[i:i + step] for i in range(0, len(zhi), step)]
        for i in b:
            i = '.'.join(i)
            with open('jiami_jieguo.txt', 'a') as f:
                f.write(i)
                f.write('.')
                f.write('\n')
                print(i)
    else:
        zhi = []
        t = 0
        for i in miyao:
            t = t + ord(i)
        for i in shuju:
            ascii_he = ord(i)
            print(t)
            ascii_he = t + ascii_he
            a = random.randint(ascii_he // 3.5, ascii_he // 2.5)
            b = random.randint(ascii_he // 3.5, ascii_he // 2.5)
            c = ascii_he - a - b
            he = '.' + str(a) + '.' + str(b) + '.' + str(c)
            zhi.append(he)
        zhi = ''.join(zhi)
        zhi = zhi.split('.')
        step = 24
        b = [zhi[i:i + step] for i in range(0, len(zhi)+1, step)]
        for i in b:
            i = '.'.join(i)
            with open('jiami_jieguo.txt', 'a') as f:
                f.write(i)
                f.write('.')
                f.write('\n')
                print(i)

#shuru = input('请输入加密值：')
miyao = input('请输入密钥：')
#jiami(shuru,miyao)

with open('加密.txt','r') as f:
    shuru = f.read()
    jiami(shuru,miyao)

效果：

 

 

 

下面看下解密实现：

 

def jiemi(shuju):
    t= shuju.split('.')
    t.pop(0)
    #t.pop()  用我的加密要去掉#号   用上面的不需要 可以解密
    step = 3
    b = [t[i:i + step] for i in range(0, len(t), step)] #分成3个一组
    heji = []
    for t in range(len(b)):
        numbers = [int(x) for x in b[t]]
        he = sum(numbers) -762 # 这里762是自己推算的密钥值。 因为这是一封英文信  字母最大不超过z 每个数值都是三位数 加了密钥的  合算ascii的值。
        he= chr(he)
        #print(b[t])
        #print(he)
        heji.append(he)
    print(min(heji))
    print(max(heji))
    heji=''.join(heji)
    print(heji)
    #print(b)

    #print(b)

with open('xceryption_jiami.txt.txt','r') as f:   #加密文本放入txt中
    t= []
    for line in f.readlines():
        line = line.strip('\n')
        t.append(line)
    t=''.join(t)
    jiemi(t)
    #print(t)

——

解密改良版：

def jiemi(shuju,miyao):
    t= shuju.split('.')
    t.pop(0)
    #t.pop()
    step = 3
    b = [t[i:i + step] for i in range(0, len(t), step)]
    heji = []
    a = 0
    for i in miyao:
        a= a + ord(i)
    for t in range(len(b)):
        numbers = [int(x) for x in b[t]]
        he = sum(numbers) -a
        he= chr(he)
        #print(b[t])
        #print(he)
        heji.append(he)
    print(min(heji))
    print(max(heji))
    heji=''.join(heji)
    print(heji)
    #print(b)

    #print(b)
miyao = input("请输入密钥：")
with open('xceryption_jiami.txt','r') as f:
    t= []
    for line in f.readlines():
        line = line.strip('\n')
        t.append(line)
    t=''.join(t)
    jiemi(t,miyao)
    #print(t)

输入代码测试 密钥正确。

 

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最后看下这封信的解密内容：

 

Samuel Smith

Thank you for looking the other way on the increased levels of toxic chemicals in the river running alongside our industrial facilities. You can pick up your payment of $20,000 in the mailbox at the mansion on the corner of 53 and St. Charles tomorrow between the hours of 3:00am and 5:00am.

Thank you,

John Sculley
ToxiCo Industrial Chemicals

 

 

 

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可以用我的解密内容，放到我的加密里，再去解密看看。 效果一样。   可以写封信给别人 加密让人家解密 嘿嘿！！！！