def test_OFB(args):
plain,key,iv = rw.read(args)
readname = "b.txt"
writename = "temp.txt"
perplain = "1"
start = time.time()
with open(readname,'r') as f1:
with open(writename,"w") as f2:
while(len(perplain)!=0):
perplain = f1.read(8)
if len(perplain)==0:
break
if len(perplain)!=8:
while(len(perplain)!=8):
perplain = "0"+perplain
temp=DES(iv,key)[:8]
ox = bin(int(temp,2)^int(perplain,2))[2:]
while(len(ox)!=8):
ox = "0"+ox
iv = iv[8:]+temp
f2.write(ox)
end = time.time()
with open("recording.txt","a") as f:
f.write("50MB en_decode for 50 times by OFB costs "+str((end-start)*100*50)+"ms\n")
print("over")
def test_CBC(args):
plain, key, iv = rw.read(args)
readname = "b.txt"
writename = "temp.txt"
perplain = "1"
start = time.time()
with open(readname, 'r') as f1:
with open(writename, "w") as f2:
while (len(perplain) != 0):
perplain = f1.read(64)
if len(perplain) == 0:
break
if len(perplain) != 64:
while (len(perplain) != 64):
perplain = "0" + perplain
ox = bin(int(iv, 2) ^ int(perplain, 2))[2:]
while (len(ox) != 64):
ox = "0" + ox
iv = DES(ox, key)
f2.write(iv)
end = time.time()
with open("recording.txt", "a") as f:
f.write("50MB en_decode for 50 times by CBC costs " +
str((end - start) * 100 * 50) + "ms\n")
print("over")
def show(args):
plain, key, iv = rw.read(args)
mode = args.mode
if mode == "all":
ecb_cipher = ECB(plain, key)
ecb_plain = ECB(ecb_cipher, key, 0)
print("ecb_cipher is", hex(int(ecb_cipher, base=2)).upper())
ctf.words.append("ecb_cipher is" +
str(hex(int(ecb_cipher, base=2)).upper()) + "\n")
print("ecb_plain is", hex(int(ecb_plain, base=2)).upper())
cbc_cipher = CBC(plain, key, iv)
cbc_plain = de_CBC(cbc_cipher, key, iv)
print("cbc_cipher is", hex(int(cbc_cipher, base=2)).upper())
ctf.words.append("cbc_cipher is" +
str(hex(int(cbc_cipher, base=2)).upper()) + "\n")
print("cbc_plain is", hex(int(cbc_plain, base=2)).upper())
cfb_cipher = CFB(plain, key, iv)
cfb_plain = CFB(cfb_cipher, key, iv)
print("cfb_cipher is", hex(int(cfb_cipher, base=2)).upper())
ctf.words.append("cfb_cipher is" +
str(hex(int(cfb_cipher, base=2)).upper()) + "\n")
print("cfb_plain is", hex(int(cfb_plain, base=2)).upper())
ofb_cipher = OFB(plain, key, iv)
ofb_plain = OFB(ofb_cipher, key, iv)
print("ofb_cipher is", hex(int(ofb_cipher, base=2)).upper())
ctf.words.append("ofb_cipher is" +
str(hex(int(ofb_cipher, base=2)).upper()) + "\n")
print("ofb_plain is", hex(int(ofb_plain, base=2)).upper())
elif mode == "ECB":
ecb_cipher = ECB(plain, key)
ecb_plain = ECB(ecb_cipher, key, 0)
print("ecb_cipher is", hex(int(ecb_cipher, base=2)).upper())
ctf.words.append("ecb_cipher is" +
str(hex(int(ecb_cipher, base=2)).upper()) + "\n")
print("ecb_plain is", hex(int(ecb_plain, base=2)).upper())
elif mode == "CBC":
cbc_cipher = CBC(plain, key, iv)
cbc_plain = de_CBC(cbc_cipher, key, iv)
print("cbc_cipher is", hex(int(cbc_cipher, base=2)).upper())
ctf.words.append("cbc_cipher is" +
str(hex(int(cbc_cipher, base=2)).upper()) + "\n")
print("cbc_plain is", hex(int(cbc_plain, base=2)).upper())
elif mode == "CFB":
cfb_cipher = CFB(plain, key, iv)
cfb_plain = CFB(cfb_cipher, key, iv)
print("cfb_cipher is", hex(int(cfb_cipher, base=2)).upper())
ctf.words.append("cfb_cipher is" +
str(hex(int(cfb_cipher, base=2)).upper()) + "\n")
print("cfb_plain is", hex(int(cfb_plain, base=2)).upper())
elif mode == "OFB":
ofb_cipher = OFB(plain, key, iv)
ofb_plain = OFB(ofb_cipher, key, iv)
print("ofb_cipher is", hex(int(ofb_cipher, base=2)).upper())
ctf.words.append("ofb_cipher is" +
str(hex(int(ofb_cipher, base=2)).upper()) + "\n")
print("ofb_plain is", hex(int(ofb_plain, base=2)).upper())
else:
print("please input right modes")
def test_ECB(args):
plain,key,iv = rw.read(args)
readname = "b.txt"
writename = "temp.txt"
de_name = "detemp.txt"
perplain = "1"
start=time.time()
with open(readname,'r') as f1:
with open(writename,'w')as f2:
while(len(perplain)!=0):
perplain = f1.read(64)
f2.write(ECB(perplain,key,flag=1))
perplain = "1"
with open(writename,'r') as f3:
with open(de_name,'w')as f4:
while(len(perplain)!=0):
perplain = f3.read(64)
f4.write(ECB(perplain,key,flag=0))
end=time.time()
with open("recording.txt","a") as f:
f.write("50MB en_decode for 50 times by ECB costs "+str((end-start)*50*50)+"ms\n")
print("over")