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我正在编写一个 Python 来处理一个日志文件。该程序解密两个模式之间的 base64 编码字符串。每当我运行代码时，我都会收到“不正确的填充错误”

这是我的代码

        import base64
        import re

        def find_between_r( s, first, last ):
            try:
                start = s.rindex( first ) + len( first )
                end = s.rindex( last, start )
                return s[start:end]
            except ValueError:
                return ""

        text='192.168.1.23 - - [18/Jun/2015:12:16:12 +0200] "GET /admin/?action=membres&order=QVNDLChzZWxlY3QgKGNhc2UgZmllbGQoY29uY2F0KHN1YnN0cmluZyhiaW4oYXNjaWkoc3Vic3RyaW5nKHBhc3N3b3JkLDE3LDEpKSksMSwxKSxzdWJzdHJpbmcoYmluKGFzY2lpKHN1YnN0cmluZyhwYXNzd29yZCwxNywxKSkpLDIsMSkpLGNvbmNhdChjaGFyKDQ4KSxjaGFyKDQ4KSksY29uY2F0KGNoYXIoNDgpLGNoYXIoNDkpKSxjb25jYXQoY2hhcig0OSksY2hhcig0OCkpLGNvbmNhdChjaGFyKDQ5KSxjaGFyKDQ5KSkpd2hlbiAxIHRoZW4gVFJVRSB3aGVuIDIgdGhlbiBzbGVlcCgyKSB3aGVuIDMgdGhlbiBzbGVlcCg0KSB3aGVuIDQgdGhlbiBzbGVlcCg2KSBlbmQpIGZyb20gbWVtYnJlcyB3aGVyZSBpZD0xKQ%3D%3D HTTP/1.1" 200 1007 "-" "-"'

        result = re.search('order=(.*) H', text)
        t=result.group(1)

        print(base64.b64decode(t))
        #with open("26828869_ch13.txt","rt") as in_file:
        #   for line in in_file:

图片包含错误

4

1 回答 1

1

因为这是基数 85！不是基数 64！尝试这个：

import base64
import binascii
import re


def find_between_r(s, first, last):
    try:
        start = s.rindex(first) + len(first)
        end = s.rindex(last, start)
        return s[start:end]
    except ValueError:
        return ""


text = '192.168.1.23 - - [18/Jun/2015:12:16:12 +0200] "GET /admin/?action=membres&order=QVNDLChzZWxlY3QgKGNhc2UgZmllbGQoY29uY2F0KHN1YnN0cmluZyhiaW4oYXNjaWkoc3Vic3RyaW5nKHBhc3N3b3JkLDE3LDEpKSksMSwxKSxzdWJzdHJpbmcoYmluKGFzY2lpKHN1YnN0cmluZyhwYXNzd29yZCwxNywxKSkpLDIsMSkpLGNvbmNhdChjaGFyKDQ4KSxjaGFyKDQ4KSksY29uY2F0KGNoYXIoNDgpLGNoYXIoNDkpKSxjb25jYXQoY2hhcig0OSksY2hhcig0OCkpLGNvbmNhdChjaGFyKDQ5KSxjaGFyKDQ5KSkpd2hlbiAxIHRoZW4gVFJVRSB3aGVuIDIgdGhlbiBzbGVlcCgyKSB3aGVuIDMgdGhlbiBzbGVlcCg0KSB3aGVuIDQgdGhlbiBzbGVlcCg2KSBlbmQpIGZyb20gbWVtYnJlcyB3aGVyZSBpZD0xKQ%3D%3D HTTP/1.1" 200 1007 "-" "-"'

result = re.search('order=(.*) H', text)
t = result.group(1)
print(base64.b85decode(t))
于 2017-10-29T18:54:43.030 回答