def decrypt(cipher, key_text):
keys = generate_keys(key_text)
text_bits = []
ciphertext = ''
for i in cipher:
# conversion of hex-decimal form to binary form
ciphertext += hex_to_bin(i)
for i in ciphertext:
text_bits.append(int(i))
text_bits = add_pads_if_necessary(text_bits)
keys.reverse()
bin_mess = ''
for i in range(0, len(text_bits), 64):
bin_mess += DES(text_bits, i, (i + 64), keys)
i = 0
text_mess = ''
while i < len(bin_mess):
text_mess += bin_to_text(bin_mess[i:i + 8])
i = i + 8
return text_mess.rstrip('\x00')
def decrypt(cipher, key_text):
keys = generate_keys(key_text)
text_bits = []
ciphertext = ''
for i in cipher:
# conversion of hex-decimal form to binary form
ciphertext += hex_to_bin(i)
for i in ciphertext:
text_bits.append(int(i))
text_bits = add_pads_if_necessary(text_bits)
keys.reverse()
bin_mess = ''
for i in range(0, len(text_bits), 64):
bin_mess += DES(text_bits, i, (i+64), keys)
i = 0
text_mess = ''
while i < len(bin_mess):
text_mess += bin_to_text(bin_mess[i:i+8])
i = i+8
return text_mess.rstrip('\x00')
def decrypt(cipher): #cipher hexadecimal dan key 8 character
key_text = "kij12345"
keys = generate_keys(key_text) # key dirubah ke biner
text_bits = []
ciphertext = ''
ciphertemp = []
for i in cipher:
# conversion of hex-decimal form to binary form
ciphertext += hex_to_bin(i)
ciphertemp = str(ciphertext)
for i in ciphertemp:
text_bits.append(i)
xx = 0
text_temp = []
for xx in range(0,len(text_bits)/64):
ho = len(text_bits)/64
temp = []
aa = 0
while aa < 64:
temp += text_bits.pop(0)
aa = aa + 1
temp_new = []
for i in temp:
temp_new.append(int(i))
#print "keys sebelum reverse->",keys
if xx == 0:
keys.reverse()
bin_mess = ''
for i in range(0, len(temp_new), 64):
bin_mess += DES(temp_new, i, (i+64), keys)
i = 0
text_mess = ''
while i < len(bin_mess):
text_mess += bin_to_text(bin_mess[i:i+8])
i = i+8
# print "ini text mess bawah->", text_mess
final_gan = []
final_gan.append(text_mess.rstrip('\x1c'))
#print "ini hasil iterasi ke ", xx+1, final_gan
text_temp.append(text_mess)
final_temp = ''.join(text_temp)
return final_temp.rstrip('\x00')
for i in temp:
# conversion of hex-decimal form to binary form
ciphertext += hex_to_bin(i)
for i in ciphertext:
text_bits.append(int(i))
text_bits = add_pads_if_necessary(text_bits)
keys.reverse()
bin_mess = ''
for i in range(0, len(text_bits), 64):
bin_mess += DES(text_bits, i, (i+64), keys)
i = 0
text_mess = ''
while i < len(bin_mess):
text_mess += bin_to_text(bin_mess[i:i+8])
i = i+8
return text_mess.rstrip('\x00')
temp += text_bits.pop(0)
aa = aa + 1
temp_new = []
for i in temp:
temp_new.append(int(i))
#print "keys sebelum reverse->",keys
if xx == 0:
keys.reverse()
bin_mess = ''
for i in range(0, len(temp_new), 64):
bin_mess += DES(temp_new, i, (i+64), keys)
i = 0
text_mess = ''
while i < len(bin_mess):
text_mess += bin_to_text(bin_mess[i:i+8])
i = i+8
# print "ini text mess bawah->", text_mess
final_gan = []
final_gan.append(text_mess.rstrip('\x1c'))
#print "ini hasil iterasi ke ", xx+1, final_gan
text_temp.append(text_mess)
final_temp = ''.join(text_temp)
return final_temp.rstrip('\x00')
=======
for i in temp:
# conversion of hex-decimal form to binary form
ciphertext += hex_to_bin(i)
for i in ciphertext:
text_bits.append(int(i))