示例#1
0
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)
示例#2
0
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)
示例#3
0
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)
示例#4
0
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)