Added cypher plugin by instanceoftom, removed duplicate plugin

plugins/cypher.py

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