From ef7627c52ef7dd815512223a9bb5eaba038756b3 Mon Sep 17 00:00:00 2001
From: Brock <you@example.com>
Date: Fri, 19 Dec 2014 14:40:20 +0800
Subject: [PATCH] crypto

---
 crypto/tmp        | Bin 0 -> 200 bytes
 crypto/xor_dec.py |  21 +++++++++++++++++++++
 crypto/xor_enc.py |  14 ++++++++++++++
 3 files changed, 35 insertions(+)
 create mode 100644 crypto/tmp
 create mode 100644 crypto/xor_dec.py
 create mode 100644 crypto/xor_enc.py

diff --git a/crypto/tmp b/crypto/tmp
new file mode 100644
index 0000000000000000000000000000000000000000..5274a9d78c283feaa9462693249a0438da772fde
GIT binary patch
literal 200
zcmXYr-3o#*0EPW++0^#u7WN_)VQeeXDHM1UBze2#``>5L-8t~_owHoi90`d_VqJhr
z%u_jPvPHKLFW9a>ISxglQVg<YX1ajJ#i6fi6%Z9a?K>3l%!3X`A!u4RWxOD~P%n8o
zPf!o4pQ4m1Pr^)k96X%;1NET11hqK=jc?>p{{r3+k?&XXs<U~{|JAmtTW6s*qrO}B
UJ%&X*OFBlOh)l{jW!y~m16gMvQvd(}

literal 0
HcmV?d00001

diff --git a/crypto/xor_dec.py b/crypto/xor_dec.py
new file mode 100644
index 0000000..d80c501
--- /dev/null
+++ b/crypto/xor_dec.py
@@ -0,0 +1,21 @@
+import sys
+
+key_len = int(sys.argv[2])
+def xor_str(str1, str2, length):
+	#print str1, str2, length
+	output = ''
+	for i in range(length):
+		output += chr(ord(str1[i]) ^ ord(str2[i]))
+	return output
+
+with open(sys.argv[1]) as f:
+	buf = f.read()
+
+output = ''
+for i in range(0, len(buf), key_len):
+	#print i
+	str1 = buf[i: i + key_len]
+	str2 = buf[i + key_len: i + key_len * 2]
+	output += xor_str(str1, str2, min(len(str1), len(str2)))
+print output
+
diff --git a/crypto/xor_enc.py b/crypto/xor_enc.py
new file mode 100644
index 0000000..14c8a0f
--- /dev/null
+++ b/crypto/xor_enc.py
@@ -0,0 +1,14 @@
+import sys
+
+crypto = sys.argv[2]
+with open(sys.argv[1]) as f:
+	buf = f.read()
+
+output = ''
+i = 0
+for c in buf:
+	output += chr(ord(c) ^ ord(crypto[i % len(crypto)]))
+	i += 1
+
+sys.stdout.write(output)
+