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MyAESCrypto.py
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MyAESCrypto.py
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#!/usr/bin/env python3
#
# This is a simple script to encrypt/decrypt a message using AES
# with CBC mode in Python 3.
import builtins as __builtin__
import inspect
import sys
import math
import time
import random
import argparse
import config
class MyAESCipher:
def __init__(self, key):
self.key = str(key)
myprint('key: %s' % (self.key))
def encrypt(self, iv, data):
myprint('iv: %s' % iv)
self.cipher = MyAES()
self.cipher.setKey(self.key, iv)
return self.cipher.encrypt(data)
def decrypt(self, iv, data):
ivb = bytes(str(iv), 'utf-8')
myprint('iv: %s' % iv)
self.cipher = MyAES()
self.cipher.setKey(self.key, iv)
return self.cipher.decrypt(data)
############
class MyAES:
def __init__(self):
self._key = None
self._iv = None
self._keyUtf8 = None
self._ivUtf8 = None
self._keyString = ''
self.ENC_XFORM_MODE = 1
self.DEC_XFORM_MODE = 2
self._t = dict()
self._h = dict()
self._f = dict()
self._l = dict()
self._u = dict()
self._d = dict()
self._p = dict()
self._v = dict()
self.__ = dict()
self._y = dict()
self._g = dict()
self._initthfludpv_yg()
def getKey(self):
result = dict()
result['key'] = self._key
result['iv'] = self._iv
return result
def setKey(self, key, iv):
if 'str' in str(type(key)) and len(key) == 16:
self._key = key
self._keyUtf8 = utf8Parse(self._key)
if 'str' in str(type(iv)) and len(iv) == 16:
self._iv = iv
self._ivUtf8 = utf8Parse(self._iv)
def genKey(self):
self._iv = int(str(int(time.time() * 1e6) + int(random.random() * 1e3))[0:16])
self._key = int(str(int(time.time() * 1e6) + int(random.random() * 1e3))[0:16])
self._ivUtf8 = utf8Parse(self._iv)
self._keyUtf8 = utf8Parse(self._key)
myprint('self._key=',self._key, 'self._iv=',self._iv)
myprint('self._keyUtf8=',self._keyUtf8, 'self._ivUtf8=',self._ivUtf8)
def genAESKey(self):
self.genKey()
self._keyString = self._aesGetKeyString()
def getKeyString(self):
s = 'key=%s&iv=%s' % (self._key, self._iv)
return s
def setStringKey(self, string):
myprint('TBD TBD TBD TBD TBD TBD TBD TBD')
temp = string.split("&")
key = temp[0].split("=")[1]
iv = temp[1].split("=")[1]
myprint('key=',key,'iv=',iv)
self.setKey(key, iv)
# Main entry points
def encrypt(self, plainText):
op = dict()
op['iv'] = self._ivUtf8
myprint(op)
v = self._cryptoAESencrypt(plainText, self._keyUtf8, self._ivUtf8, op)
return self._toString(v)
def decrypt(self, encrypted):
op = dict()
op['iv'] = self._ivUtf8
myprint(op)
v = self._cryptoAESdecrypt(encrypted, self._keyUtf8, self._ivUtf8, op)
w = self._toString(v)
return w
class MyDecryptor:
def __init__(self, parent, key, iv):
self._parent = parent
self._key = key
self._iv = iv
self._xformMode = parent.DEC_XFORM_MODE
myprint('parent:', parent, 'key: %s iv: %s' % (self._key, self._iv))
self.this = dict()
self.this['_iv'] = self._iv
self.this['_key'] = dict()
self.this['_key'] = key
self.this['pthis'] = self._parent._this
self.this['_xformMode'] = self._xformMode
self.this['_minBufferSize'] = 1
self.this['blockSize'] = 4
self.this['processBlock'] = self._processBlock
self.this['decryptBlock'] = self._decryptBlock
self.this['func_o'] = self._parent._func_o
self.this['formatter'] = dict()
self.this['formatter']['parse'] = self.parse
self.this['formatter']['stringify'] = self.stringify
self.this['cfg'] = dict()
self.this['cfg']['iv'] = iv
self.this['cfg']['padding'] = dict()
self.this['cfg']['padding']['pad'] = self._parent._pad
self.this['cfg']['padding']['unpad'] = self._parent._unpad
self._parent._reset(self)
#VM: 1137
def _processBlock(self, t, r):
e = self.this
i = e['blockSize']
myprint('e=',e)
n = slice(t, r, r + i)
myprint('e=',e,'i=',i)
myprint('n=',n)
e['decryptBlock'](t, r)
e['func_o'](e, t, r, i)
self.this['_prevBlock'] = n
def _decryptBlock(self, t, r):
e = t[r + 1]
t[r + 1] = t[r + 3]
t[r + 3] = e
p = self._parent
p.doCryptBlock(self.this, t, r, self.this['_invKeySchedule'], p._v, p.__, p._y, p._g, p._f)
e = t[r + 1]
t[r + 1] = t[r + 3]
t[r + 3] = e
myprint('t=',t)
# VM: 125
def stringify(self, this):
t = this['ciphertext']
#myprint('t=',t)
r = t['words']
e = t['sigBytes']
i = list()
n = 0
while n < e:
o = r[n >> 2] >> 24 - n % 4 * 8 & 255
i.append(chr(o))
n += 1
return "".join(i)
#VM: 1214
def parse(self, t, pthis): # pthis = parent _this
r = self._parse(pthis, t)
e = r['words']
i = dict()
if 1398893684 == e[0] and 1701076831 == e[1]:
i['words'] = slice(e, 2, 4)
i['sigBytes'] = n if n else 4 * i['length']
splice(e, 0, 4)
r['sigBytes'] -= 16
ret = dict()
ret['ciphertext'] = r
ret['salt'] = i
myprint('ret=',ret)
return ret
def _parse(self, pthis, t):
e = _map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
r = len(t)
try:
i = pthis['_reverseMap']
except:
i = pthis['_reverseMap'] = dict()
n = 0
while n < len(e):
i[ord(e[n])] = n
n += 1
pthis['_reverseMap'] = i
o = e[64]
if o:
s = t.find(o)
if s != -1:
r = s
ret = self._fun1(t, r, i)
myprint('ret=',ret)
return ret
def _fun1(self, t, r, e):
i = dict()
n = 0
o = 0
myprint('t=',t)
myprint('e=',e)
while o < r:
if o % 4:
s = e[ord(t[o-1])] << o % 4 * 2
a = e[ord(t[o])] >> 6 - o % 4 * 2
try:
i[n >> 2] |= toSigned32((s | a) << 24 - n % 4 * 8)
except:
i[n >> 2] = toSigned32((s | a) << 24 - n % 4 * 8)
#myprint(o,n,s,a,i)
n += 1
o += 1
i['length'] = len(i)
myprint('n=',n)
myprint('i=',i)
ret = dict()
ret['words'] = i
ret['sigBytes'] = n if n else 4 * i['length']
return ret
class MyEncryptor:
def __init__(self, parent, key, iv):
self._parent = parent
self._key = key
self._iv = iv
self._xformMode = parent.ENC_XFORM_MODE
myprint('parent:', parent, 'key: %s iv: %s' % (self._key, self._iv))
self.this = dict()
self.this['pthis'] = self._parent._this
self.this['cfg'] = dict()
self.this['cfg']['iv'] = iv
self.this['cfg']['padding'] = dict()
self.this['cfg']['padding']['pad'] = self._parent._pad
self.this['cfg']['padding']['unpad'] = self._parent._unpad
self.this['_key'] = dict()
self.this['_key'] = key
self.this['_xformMode'] = self._xformMode
self.this['_minBufferSize'] = 0
self.this['blockSize'] = 4
self.this['processBlock'] = self._processBlock
self.this['encryptBlock'] = self._encryptBlock
self.this['func_o'] = self._parent._func_o
self._parent._reset(self)
#VM: 1138
def _processBlock(self, t, r):
e = self.this
i = e['blockSize']
myprint(e)
e['func_o'](e, t, r, i)
e['encryptBlock'](t, r)
self.this['_prevBlock'] = slice(t, r, r + i)
myprint('self.this[_prevBlock]=',self.this['_prevBlock'])
#VM: 1701
def _encryptBlock(self, t, r):
myprint(t, r)
p = self._parent
p.doCryptBlock(self.this, t, r, self.this['_keySchedule'], p._l, p._u, p._d, p._p, p._h)
def _initthfludpv_yg(self):
r = 0
while r < 256:
self._t[r] = r << 1 if r < 128 else r << 1 ^ 283
r += 1
e = 0
i = 0
r = 0
while r < 256:
n = i ^ i << 1 ^ i << 2 ^ i << 3 ^ i << 4
n = n >> 8 ^ 255 & n ^ 99
self._h[e] = n
self._f[n] = e
o = self._t[self._f[n]]
s = self._t[o]
a = self._t[s]
c = 257 * self._t[n] ^ 16843008 * n
self._l[e] = toSigned32(c << 24 | c >> 8)
self._u[e] = toSigned32(c << 16 | c >> 16)
self._d[e] = toSigned32(c << 8 | c >> 24)
self._p[e] = c
c = 16843009 * a ^ 65537 * s ^ 257 * o ^ 16843008 * e
self._v[n] = toSigned32(c << 24 | c >> 8)
self.__[n] = toSigned32(c << 16 | c >> 16)
self._y[n] = toSigned32(c << 8 | c >> 24)
self._g[n] = toSigned32(c)
if e:
e = o ^ self._t[self._t[self._t[a ^ o]]]
i ^= self._t[self._t[i]]
else:
e = i = 1
r += 1
self._t['length'] = len(self._t)
self._h['length'] = len(self._h)
self._f['length'] = len(self._f)
self._l['length'] = len(self._l)
self._u['length'] = len(self._u)
self._d['length'] = len(self._d)
self._p['length'] = len(self._p)
self._v['length'] = len(self._v)
self.__['length'] = len(self.__)
self._y['length'] = len(self._y)
self._g['length'] = len(self._g)
#VM:1680
def _doReset(self, xcryptor):
myprint('xcryptor=', xcryptor)
w = [0, 1, 2, 4, 8, 16, 32, 64, 128, 27, 54]
this = xcryptor.this
h = self._h
this['keySize'] = 8
this['_data'] = dict()
this['_data']['words'] = dict()
this['_data']['words']['length'] = 0
this['_data']['sigBytes'] = 0
this['_nDataBytes'] = 0
this['_nRounds'] = 0
this['_keyPriorReset'] = dict()
if (this['_nRounds'] != 0 or this['_keyPriorReset'] == this['_key']):
return
t = this['_keyPriorReset'] = this['_key']
r = t['words']
e = int(t['sigBytes'] / 4)
this['_nRounds'] = e + 6
i = int(4 * (this['_nRounds'] + 1))
n = this['_keySchedule'] = dict()
n['length'] = this['_keySchedule']['length'] = 0
o = 0
myprint(this,t,r,e,i,o)
while o < i:
if o < e:
n[o] = r[o]
n['length'] += 1
#myprint('i',o,n)
else:
s = n[o - 1]
#myprint('0',o,s)
if o % e:
if 6 < e:
if o % e == 4:
s = toSigned32(h[s >> 24] << 24)
s |= toSigned32(h[s >> 16 & 255] << 16)
s |= h[s >> 8 & 255] << 8
s |= h[255 & s]
else:
if s < 0:
s = s + 2**32 # convert signed to unsigned
s0 = toSigned32(s << 8 | s >> 24)
# Two complement
s0 = int(bin(s0 & 0b11111111111111111111111111111111),2)
x = s0 >> 24
s = toSigned32(h[x] << 24)
x = s0 >> 16 & 255
s |= toSigned32(h[x] << 16)
x = s0 >> 8 & 255
s |= toSigned32(h[x] << 8)
x = 255 & s0
s |= h[x]
s ^= toSigned32(w[int(o / e) | 0] << 24)
n[o] = n[o - e] ^ s
n['length'] += 1
o += 1
this['_keySchedule'] = n
myprint('this[_keySchedule]=',n)
v = self._v
y = self._y
g = self._g
_ = self.__
a = this['_invKeySchedule'] = dict()
a['length'] = this['_invKeySchedule']['length'] = 0
c = 0
while c < i:
o = i - c
if c % 4:
s = n[o]
else:
s = n[o - 4]
if c < 4 or o <= 4:
a[c] = s
else:
s0 = s
s = int(bin(s & 0b11111111111111111111111111111111),2)
aa = v[h[s >> 24]]
bb = _[h[s >> 16 & 255]]
cc = y[h[s >> 8 & 255]]
dd = g[h[255 & s]]
a[c] = aa ^ bb ^ cc ^ dd
a['length'] += 1
c += 1
# Copy a[] to _invKeySchedule[]
this['_invKeySchedule'] = a
myprint('this[_invKeySchedule]=',a)
#VM:1166
def _reset(self, xcryptor):
self._doReset(xcryptor)
#VM:1053
def _createEncryptor(self, k, iv):
t = MyAES.MyEncryptor(self, k, iv)
return t
def _createDecryptor(self, k, iv):
t = MyAES.MyDecryptor(self, k, iv)
return t
#VM:1183
def _doFinalize(self, this):
t = this['cfg']['padding']
if this['_xformMode'] == self.ENC_XFORM_MODE:
t['pad'](this['_data'], this['blockSize'])
r = self._process(this, True)
myprint('r=',r)
else:
r = self._process(this, True)
myprint('r=',r)
t['unpad'](r)
return r
#VM:1073
def _finalize(self, this, t):
myprint('t=', t)
myprint('type of t=',type(t))
if 'str' in str(type(t)): # Encrypt mode
# Convert t from string to dict
tt = utf8Parse(t)
ttt = self._concat(this['_data'], tt)
else:
ttt = self._concat(this['_data'], t)
this['_nDataBytes'] += ttt['sigBytes']
myprint('ttt=',ttt, '_nDataBytes=', this['_nDataBytes'])
return self._doFinalize(this)
#VM:1232
def _cryptoAESencrypt(self, plainText, keyUtf8, ivUtf8, op):
myprint('keyUtf8=',keyUtf8)
myprint('ivUtf8=',ivUtf8)
self._this = dict()
self._this['__creator'] = dict()
self._this['__creator']['name'] = "createEncryptor"
self._this['__creator']['length'] = 2
self._this['_iv'] = ivUtf8
encryptor = self._createEncryptor(keyUtf8, ivUtf8)
self._this['_cipher'] = encryptor.this
myprint(self._this['_cipher'])
o = self._finalize(self._this['_cipher'], plainText)
s = self._this['_cipher']['cfg']
ciphertext = o
key = keyUtf8
iv = ivUtf8
algorithm = self._this['_cipher']
padding = s['padding']
blockSize = self._this['_cipher']['blockSize']
formatter = dict()
formatter['parse'] = self._parse
formatter['stringify'] = self._stringify
ret = dict()
ret['ciphertext'] = ciphertext
ret['key'] = key
ret['iv'] = iv
ret['algorithm'] = algorithm
ret['padding'] = padding
ret['blockSize'] = blockSize
ret['formatter'] = formatter
return ret
def _cryptoAESdecrypt(self, encrypted, keyUtf8, ivUtf8, op):
myprint('keyUtf8=',keyUtf8)
myprint('ivUtf8=',ivUtf8)
self._this = dict()
self._this['__creator'] = dict()
self._this['__creator']['name'] = "createDecryptor"
self._this['__creator']['length'] = 2
self._this['_iv'] = ivUtf8
decryptor = self._createDecryptor(keyUtf8, ivUtf8)
self._this['_cipher'] = decryptor.this
r = self._parse(self._this, encrypted, decryptor.this['formatter'])
myprint('_cipher=',self._this['_cipher'])
o = self._finalize(self._this['_cipher'], r['ciphertext'])
myprint('o=',o)
ciphertext = o
key = keyUtf8
iv = ivUtf8
formatter = self._this['_cipher']['formatter']
blockSize = self._this['_cipher']['blockSize']
ret = dict()
ret['ciphertext'] = ciphertext
ret['key'] = key
ret['iv'] = iv
ret['blockSize'] = blockSize
ret['formatter'] = formatter
return ret
def _AESclamp(self, this):
t = this['words']
r = this['sigBytes']
try:
oval = t[r >> 2]
t[r >> 2] &= 4294967295 << 32 - r % 4 * 8
if oval != t[r >> 2]:
myprint('t[%d] has changed from %d to %d' % (r>>2,oval, t[r >> 2]))
else:
myprint('Unmodified t[%d]: %d' % (r>>2, t[r >> 2]))
t['length'] = math.ceil(r / 4)
myprint('t[length] =',t['length'])
except:
myprint('passing')
pass
def _pad(self, t, r):
e = 4 * r
i = e - t['sigBytes'] % e
n = i << 24 | i << 16 | i << 8 | i
o = dict()
s = 0
j = 0
while s < i:
o[j] = n
s += 4
j += 1
o['length'] = len(o)
myprint(e,i,n,o,s,r)
c = dict()
c['words'] = o
if None != i:
c['sigBytes'] = i
else:
c['sigBytes'] = 4 * o['length']
myprint(e,i,n,o,s,r,c)
self._concat(t, c)
#VM: 1156
def _unpad(self, t):
r = 255 & t['words'][t['sigBytes'] - 1 >> 2]
t['sigBytes'] -= r
myprint('r=',r,'t=',t)
def _process(self, this, t):
r = this['_data']
e = r['words']
i = r['sigBytes']
n = this['blockSize']
o = i / (4 * n)
if o : #DP o == t
s = math.ceil(o) * 4
myprint('0 s=',s)
else:
s = max((0 | int(o)) - this['_minBufferSize'], 0) * n
myprint('1 s=',s)
a = min(4 * s, i)
myprint('t=',t,'i=',i,'n=',n,'o=',o,'s=',s,'e=',e,'a=',a)
if s:
c = 0
while c < s:
this['processBlock'](e, c)
c += n
h = splice(e, 0, s)
myprint('h=',h)
r['sigBytes'] -= a
myprint('r[sigBytes]=', r['sigBytes'])
ret = dict()
ret['words'] = h
ret['sigBytes'] = a
myprint('ret=',ret)
return ret
def doCryptBlock(self, this, t, r, e, i, n, o, s, a):
myprint(t)
c = this['_nRounds']
h = t[r] ^ e[0]
f = t[r + 1] ^ e[1]
l = t[r + 2] ^ e[2]
u = t[r + 3] ^ e[3]
d = 4
p = 1
myprint(c,h,f,l,u,d,p)
while p < c:
if h < 0:
h = h + 2**32 # convert signed to unsigned
v = i[h >> 24] ^ n[f >> 16 & 255] ^ o[l >> 8 & 255] ^ s[255 & u] ^ e[d]
v = toSigned32(v)
d += 1
if f < 0:
f = f + 2**32 # convert signed to unsigned
_ = i[f >> 24] ^ n[l >> 16 & 255] ^ o[u >> 8 & 255] ^ s[255 & h] ^ e[d]
_ = toSigned32(_)
d += 1
if l < 0:
l = l + 2**32 # convert signed to unsigned
y = i[l >> 24] ^ n[u >> 16 & 255] ^ o[h >> 8 & 255] ^ s[255 & f] ^ e[d]
y = toSigned32(y)
d += 1
if u < 0:
u = u + 2**32 # convert signed to unsigned
g = i[u >> 24] ^ n[h >> 16 & 255] ^ o[f >> 8 & 255] ^ s[255 & l] ^ e[d]
g = toSigned32(g)
d += 1
h = v
f = _
l = y
u = g
p +=1
if h < 0:
h = h + 2**32 # convert signed to unsigned
v = (a[h >> 24] << 24 | a[f >> 16 & 255] << 16 | a[l >> 8 & 255] << 8 | a[255 & u]) ^ e[d]
d += 1
v = toSigned32(v)
if f < 0:
f = f + 2**32 # convert signed to unsigned
_ = (a[f >> 24] << 24 | a[l >> 16 & 255] << 16 | a[u >> 8 & 255] << 8 | a[255 & h]) ^ e[d]
d += 1
_ = toSigned32(_)
if l < 0:
l = l + 2**32 # convert signed to unsigned
y = (a[l >> 24] << 24 | a[u >> 16 & 255] << 16 | a[h >> 8 & 255] << 8 | a[255 & f]) ^ e[d]
d += 1
y = toSigned32(y)
if u < 0:
u = u + 2**32 # convert signed to unsigned
g = (a[u >> 24] << 24 | a[h >> 16 & 255] << 16 | a[f >> 8 & 255] << 8 | a[255 & l]) ^ e[d]
d += 1
g = toSigned32(g)
t[r] = v
t[r + 1] = _
t[r + 2] = y
t[r + 3] = g
myprint('t=',t)
def _func_o(self, this, t, r, e):
myprint(this)
i = this['pthis']['_iv']['words'] if this['pthis']['_iv'] else None
myprint('i=',i)
myprint('t=',t)
myprint('r=',r)
if i != None:
n = i
myprint('Setting this[parent][_iv] to None')
this['pthis']['_iv'] = None
else:
n = this['_prevBlock']
myprint('n=',n)
o = 0
while o < e:
t[r + o] ^= n[o]
o += 1
myprint('t=',t)
def stringify(self, this):
myprint('TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD ')
sys.exit(1)
#VM: 49
def _concat(self, this, t):
r = this['words']
e = t['words']
i = this['sigBytes']
n = t['sigBytes']
myprint('r=',r)
myprint('e=',e)
myprint('i=',i,'n=',n,'t=',t)
self._AESclamp(this)
if i % 4:
o = 0
while o < n:
s = e[o >> 2] >> 24 - o % 4 * 8 & 255
myprint(o,n,s,i+o>>2)
# Extend r{} if needed
try:
r[i + o >> 2] |= s << 24 - (i + o) % 4 * 8
except:
r[i + o >> 2] = s << 24 - (i + o) % 4 * 8
myprint('r[i + o >> 2]=',r[i + o >> 2])
o += 1
else:
o = 0
while o < n:
r[i + o >> 2] = e[o >> 2]
o += 4
r['length'] = len(r) - 1
this['sigBytes'] += n
myprint('this=',this)
return this
def _parse(self, this, t, r):
myprint('t=',t)
if 'str' in str(type(t)):
return r['parse'](t, this)
else:
return t
def _b64Stringify(self, this, t):
r = t['words']
e = t['sigBytes']
i = this['_map']
myprint(r,e,i)
self._AESclamp(t)
n = list()
o = 0
while o < e:
s = (r[o >> 2] >> 24 - o % 4 * 8 & 255) << 16
if (o + 1 >> 2) < r['length']:
s |= (r[o + 1 >> 2] >> 24 - (o + 1) % 4 * 8 & 255) << 8
if (o + 2 >> 2) < r['length']:
s |= r[o + 2 >> 2] >> 24 - (o + 2) % 4 * 8 & 255
a = 0
while a < 4 and o + .75 * a < e:
n.append(i[s >> 6 * (3 - a) & 63])
a += 1
o += 3
c = i[64]
if c:
while len(n) % 4:
n.append(c)
return "".join(n)
#VM:1205
def _stringify(self, this):
myprint('TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD')
r = this['ciphertext']
try:
e = this['salt']
except:
e = None
myprint('No salt')
if e:
# i = c.create([1398893684, 1701076831]).concat(e).concat(r)
myprint('TBD TBD TBD TBD TBD TBD TBD TBD ')
sys.exit(1)
else:
i = r
b64enc = dict()
b64enc['stringify'] = self._b64Stringify
b64enc['_map'] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
return self._b64Stringify(b64enc, i)
#VM: 1200 / 45
def _toString(self, this):
formatter = this['formatter']
ret = formatter['stringify'](this)
myprint(ret)
return ret
####
def splice(d, s, e):
myprint('d=',d,'s=',s,'e=',e)
r = dict()
i = 0
while s < e:
r[i] = d[s]
del(d[s])
i += 1
s += 1
r['length'] = len(r)
myprint('r=',r)
return r
def slice(d,s,e):
myprint('d=',d,'s=',s,'e=',e)
r = dict()
i = 0
while s < e:
r[i]=d[s]
i += 1
s += 1
r['length'] = len(r)
myprint('r=',r)
return r
def toSigned32(n):
n = n & 0xffffffff
return (n ^ 0x80000000) - 0x80000000
def utf8Parse(t):
r = len(str(t))
tAsString = str(t)
myprint(tAsString,r)
e = dict()
i = 0
while i < r:
try:
x = e[i >> 2]
except:
e[i >> 2] = 0
e[i >> 2] |= (255 & ord(tAsString[i])) << 24 - i % 4 * 8
i += 1
e['length'] = len(e)
d = dict()
d['words'] = e
d['sigBytes'] = r
return d
####
def module_path(local_function):
''' returns the module path without the use of __file__.
Requires a function defined locally in the module.
from http://stackoverflow.com/questions/729583/getting-file-path-of-imported-module'''
return os.path.abspath(inspect.getsourcefile(local_function))
def myprint(*args, **kwargs):
class color:
PURPLE = '\033[95m'
CYAN = '\033[96m'
DARKCYAN = '\033[36m'
BLUE = '\033[94m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
RED = '\033[91m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
END = '\033[0m'
#example: print(color.BOLD + 'Hello World !' + color.END)
"""My custom print() function."""
# Adding new arguments to the print function signature
# is probably a bad idea.
# Instead consider testing if custom argument keywords
# are present in kwargs
if config.DEBUG:
__builtin__.print('%s%s()%s:' % (color.BLUE, inspect.stack()[1][3], color.END), *args, **kwargs)
####
# Arguments parser
def parse_argv():
desc = 'Argument parser for AES encryption/decryption'
parser = argparse.ArgumentParser(description=desc)
parser.add_argument("-d", "--debug",
action="store_true", dest="debug", default=False,
help="print debug messages (to stdout)")
group = parser.add_mutually_exclusive_group()
group.add_argument("-e", "--encrypt",
action="store_true",
dest="encryptMode",
default=False,
help="Test AES Encryption")
group.add_argument("-x", "--decrypt",
action="store_true",
dest="decryptMode",
default=False,
help="Test AES Decryption")
parser.add_argument('-f', '--file',
dest='logFile',
const=config.LOGFILE,
default=None,
action='store',
nargs='?',
metavar = 'FILE',
help="write debug messages to FILE")
parser.add_argument("-i", "--info",
action="store_true", dest="version", default=False,
help="print version and exit")
args = parser.parse_args()
return args
def main():
args = parse_argv()
if args.version:
print('%s: version 1.0' % sys.argv[0])
sys.exit(0)
if args.debug:
config.DEBUG = True
if args.logFile == None:
#print('Using stdout')
pass
else:
if args.logFile == '':
config.LOGFILE = "%s-%s-debug.txt" % (sys.argv[0], 'Encrypt' if args.encryptMode else 'Decrypt')
else:
config.LOGFILE = args.logFile
print('Using log file: %s' % config.LOGFILE)
try:
sys.stdout = open(config.LOGFILE, "w")
except:
print('Cannot create log file')
if not args.encryptMode and not args.decryptMode:
print('You must set the requested mode (-e / -x)')
sys.exit(1)
# Hardcoded key and iv for internal testing
key = "1609088003850494"
iv = "1609088003850873"