Move previous cryptopals work into an Erlang subfolder, start cryptopals in Python 3

[sandbox] / cryptopals / 01.02 / hex.erl

diff --git a/cryptopals/01.02/hex.erl b/cryptopals/01.02/hex.erl
deleted file mode 100644 (file)
index 9c39538..0000000
--- a/cryptopals/01.02/hex.erl
+++ /dev/null
@@ -1,23 +0,0 @@
--module(hex).
--export([decode/1,encode/1,fixed_xor/2]).
-
-data_in_pairs([]) -> [];
-data_in_pairs([C1,C2|Tail]) -> [ [C1] ++ [C2] | data_in_pairs(Tail) ].
-
-decode(Data) -> [ list_to_integer(P,16) || P <- data_in_pairs(Data) ]. 
-
-fixed_xor(Data1,Data2) ->
-    DecodedData1 = decode(Data1),
-    DecodedData2 = decode(Data2),
-    XoredData = lists:zipwith(
-        fun(P1,P2) -> P1 bxor P2 end,
-        DecodedData1,
-        DecodedData2),
-    encode(XoredData).
-
-encode(L) -> string:join(lists:map(fun(X) -> int_to_hex(X) end, L), "").
- 
-int_to_hex(N) when N < 256 -> [hex(N div 16), hex(N rem 16)].
- 
-hex(N) when (0  =< N) and (N < 10) -> $0 + N;
-hex(N) when (10 =< N) and (N < 16) -> $a + (N-10).