78 lines
1.7 KiB
Python
78 lines
1.7 KiB
Python
'''
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Plugin which (de)cyphers a string
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Doesn't cypher non-alphanumeric strings yet.
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by instanceoftom
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'''
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from util import hook
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chars="abcdefghijklmnopqrstuvwxyz1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ "
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len_chars = len(chars)
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@hook.command
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def cypher(inp):
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".cypher <pass> <string> -- cyphers a string with the password"
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passwd = inp.split(" ")[0]
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len_passwd = len(passwd)
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inp = " ".join(inp.split(" ")[1:])
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out =""
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passwd_index=0
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for character in inp:
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try:
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chr_index = chars.index(character)
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passwd_chr_index = chars.index(passwd[passwd_index])
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out_chr_index = (chr_index + passwd_chr_index) % len_chars
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out_chr = chars[out_chr_index]
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out += out_chr
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passwd_index = ( passwd_index + 1) % len_passwd
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except ValueError:
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out += character
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continue
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return out
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@hook.command
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def decypher(inp):
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".decypher <pass> <string> -- decyphers a string with the password"
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passwd = inp.split(" ")[0]
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len_passwd = len(passwd)
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inp = " ".join(inp.split(" ")[1:])
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passwd_index=0
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#I am lazy and I could do the math to get the passwd_index
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#for this inp, but meh thats for a later day so lets loop.
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for character in inp:
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try:
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chr_index = chars.index(character)
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passwd_index = ( passwd_index + 1) % len_passwd
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except ValueError:
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continue
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passwd_index = passwd_index-1
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reversed_message = inp[::-1]
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out =""
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for character in reversed_message:
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try:
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chr_index = chars.index(character)
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passwd_chr_index = chars.index(passwd[passwd_index])
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out_chr_index = (chr_index - passwd_chr_index) % len_chars
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out_chr = chars[out_chr_index]
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out += out_chr
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passwd_index = ( passwd_index - 1) % len_passwd
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except ValueError:
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out += character
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continue
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return out[::-1] |