def decrypt(filename, k_size, pwd):
M_SIZE = 4
msg = filename
key_size = k_size
key = [[184, 18, 29, 158], [123, 45, 253, 202], [254, 124, 64, 32],
[86, 54, 48, 68]]
m = segmess.segmess(msg)
m_size = len(m)
print("Decrytpion for %s" % (msg))
print(m)
# Inversion:
mc1 = m
mc2 = m
mc3 = m
mc4 = m
# InvAddRoundKey:
for cpt in range(m_size):
mc1[cpt] = addRoundKey.addRoundKey(m[cpt], key)
# InvMixColumns:
for cpt in range(m_size):
mc2[cpt] = mixColumns.invMixColumns(mc1[cpt])
# InvShiftRows:
for cpt in range(m_size):
mc3[cpt] = shiftRows.invShiftRows(mc2[cpt], key_size)
# InvSubBytes:
for cpt in range(m_size):
mc4[cpt] = subBytes.invSubBytes(mc3[cpt])
c_filename = filename + ".clr"
segmess.invSegmessClr(mc4, c_filename)
print("Decrypted message:")
print(mc4)
def decrypt(filename, k_size, pwd):
M_SIZE = 4
msg = filename
key_size = k_size
key = [[184, 18, 29, 158], [123, 45, 253, 202], [254, 124, 64, 32], [86, 54, 48, 68]]
m = segmess.segmess(msg)
m_size = len(m)
print("Decrytpion for %s" % (msg))
print(m)
# Inversion:
mc1 = m
mc2 = m
mc3 = m
mc4 = m
# InvAddRoundKey:
for cpt in range(m_size):
mc1[cpt] = addRoundKey.addRoundKey(m[cpt], key)
# InvMixColumns:
for cpt in range(m_size):
mc2[cpt] = mixColumns.invMixColumns(mc1[cpt])
# InvShiftRows:
for cpt in range(m_size):
mc3[cpt] = shiftRows.invShiftRows(mc2[cpt], key_size)
# InvSubBytes:
for cpt in range(m_size):
mc4[cpt] = subBytes.invSubBytes(mc3[cpt])
c_filename = filename + ".clr"
segmess.invSegmessClr(mc4, c_filename)
print("Decrypted message:")
print(mc4)
def go(self):
words = keyExpansion(self.key)
if self.printMode != OFF:
self.printChanges(
"initializing state",
f"round[0].iinput: {self.state.getStateAsStr()}",
)
key = "".join(words[40:44])
self.state = addRoundKey(self.state, key)
if self.printMode != OFF:
self.printChanges(
f"addRoundKey for round {self.currentRound}",
f"round[0].ik_sch: {key}",
)
self.currentRound -= 1
flip = [9, 8, 7, 6, 5, 4, 3, 2, 1]
while self.currentRound > 0:
printRound = flip[self.currentRound - 1]
if self.printMode != OFF:
if self.printMode == GRID:
input(
f"Press return to advance to round {self.currentRound}"
)
print()
self.printChanges(
f"the start of {self.currentRound}",
f"round[{printRound}].istart: {self.state.getStateAsStr()}",
)
self.state = invShiftRows(self.state)
if self.printMode != OFF:
self.printChanges(
"shifted rows",
f"round[{printRound}].is_row: {self.state.getStateAsStr()}",
)
self.state = invSubBytes(self.state)
if self.printMode != OFF:
self.printChanges(
"subbed bytes using sBox",
f"round[{printRound}].is_box: {self.state.getStateAsStr()}",
)
key = "".join(words[self.currentRound * 4:(self.currentRound + 1) *
4])
self.state = addRoundKey(self.state, key)
if self.printMode != OFF:
self.printChanges(
f"addRoundKey {self.currentRound}",
f"round[{printRound}].ik_sch: {key}",
)
self.printChanges(
f"addRoundKey {self.currentRound}",
f"round[{printRound}].ik_add: {self.state.getStateAsStr()}",
)
self.state = invMixColumns(self.state, self.f)
self.currentRound -= 1
# End of Core Loop (rounds 1-9)
if self.printMode != OFF:
if self.printMode == GRID:
input(f"Press return to advance to round {self.currentRound}")
print()
self.printChanges(
f"the start of {self.currentRound}",
f"round[10].istart: {self.state.getStateAsStr()}",
)
self.state = invShiftRows(self.state)
if self.printMode != OFF:
self.printChanges(
"final shift rows",
f"round[10].is_row: {self.state.getStateAsStr()}",
)
self.state = invSubBytes(self.state)
if self.printMode != OFF:
self.printChanges(
"subbed bytes using sBox",
f"round[10].is_box: {self.state.getStateAsStr()}",
)
key = "".join(words[0:4])
self.state = addRoundKey(self.state, key)
if self.printMode != OFF:
self.printChanges(
"final add round key",
f"round[10].ik_sch: {key}",
)
self.result = self.state.getStateAsStr()
if self.printMode == GRID:
print("***********************************************\n" +
f"Final State / Cipher Output\n" +
"***********************************************")
self.state.printStateAsGrid()
if self.printMode == CMODE:
self.printChanges("", f"round[10].ioutput: {self.result}")
if self.printMode == OFF:
print("Result: " + self.result)
def crypt(filename, k_size, pwd):
M_SIZE = 4
msg = filename
key_size = k_size
key = [[184, 18, 29, 158], [123, 45, 253, 202], [254, 124, 64, 32], [86, 54, 48, 68], [184, 18, 29, 158], [123, 45, 253, 202], [254, 124, 64, 32], [86, 54, 48, 68]]
m = segmess.segmess(msg)
m_size = len(m)
print("Encrytpion for %s" % (msg))
print(m)
# Tempo array definition
c1 = m
c2 = m
c3 = m
c4 = m
# SubBytes:
for cpt in range(m_size):
c1[cpt] = subBytes.subBytes(m[cpt])
# ShiftRows:
for cpt in range(m_size):
c2[cpt] = shiftRows.shiftRows(c1[cpt], key_size)
# MixColumns:
for cpt in range(m_size):
c3[cpt] = mixColumns.mixColumns(c2[cpt])
# AddRoundKey:
for cpt in range(m_size):
c4[cpt] = addRoundKey.addRoundKey(c3[cpt], key)
print("Encrypted message:")
print(c4)
c_filename = filename + ".chif"
segmess.invSegmessChiff(c4, c_filename)
# ==================== Test: Inversion ===================
print("\nDecryption checking...")
mc1 = m
mc2 = m
mc3 = m
mc4 = m
# InvAddRoundKey:
for cpt in range(m_size):
mc1[cpt] = addRoundKey.addRoundKey(c4[cpt], key)
# InvMixColumns:
for cpt in range(m_size):
mc2[cpt] = mixColumns.invMixColumns(c1[cpt])
# InvShiftRows:
for cpt in range(m_size):
mc3[cpt] = shiftRows.invShiftRows(mc2[cpt], key_size)
# InvSubBytes:
for cpt in range(m_size):
mc4[cpt] = subBytes.invSubBytes(mc3[cpt])
print("Decrypted message:")
print(mc4)
def crypt(filename, k_size, pwd):
M_SIZE = 4
msg = filename
key_size = k_size
key = [[184, 18, 29, 158], [123, 45, 253, 202], [254, 124, 64, 32],
[86, 54, 48, 68], [184, 18, 29, 158], [123, 45, 253, 202],
[254, 124, 64, 32], [86, 54, 48, 68]]
m = segmess.segmess(msg)
m_size = len(m)
print("Encrytpion for %s" % (msg))
print(m)
# Tempo array definition
c1 = m
c2 = m
c3 = m
c4 = m
# SubBytes:
for cpt in range(m_size):
c1[cpt] = subBytes.subBytes(m[cpt])
# ShiftRows:
for cpt in range(m_size):
c2[cpt] = shiftRows.shiftRows(c1[cpt], key_size)
# MixColumns:
for cpt in range(m_size):
c3[cpt] = mixColumns.mixColumns(c2[cpt])
# AddRoundKey:
for cpt in range(m_size):
c4[cpt] = addRoundKey.addRoundKey(c3[cpt], key)
print("Encrypted message:")
print(c4)
c_filename = filename + ".chif"
segmess.invSegmessChiff(c4, c_filename)
# ==================== Test: Inversion ===================
print("\nDecryption checking...")
mc1 = m
mc2 = m
mc3 = m
mc4 = m
# InvAddRoundKey:
for cpt in range(m_size):
mc1[cpt] = addRoundKey.addRoundKey(c4[cpt], key)
# InvMixColumns:
for cpt in range(m_size):
mc2[cpt] = mixColumns.invMixColumns(c1[cpt])
# InvShiftRows:
for cpt in range(m_size):
mc3[cpt] = shiftRows.invShiftRows(mc2[cpt], key_size)
# InvSubBytes:
for cpt in range(m_size):
mc4[cpt] = subBytes.invSubBytes(mc3[cpt])
print("Decrypted message:")
print(mc4)