def challenge12encrypt(content):
suffix = hex2base64.base642str("Um9sbGluJyBpbiBteSA1LjAKV2l0aCBteSByYWctdG9wIGRvd24gc28gbXkg"
"aGFpciBjYW4gYmxvdwpUaGUgZ2lybGllcyBvbiBzdGFuZGJ5IHdhdmluZyBq"
"dXN0IHRvIHNheSBoaQpEaWQgeW91IHN0b3A/IE5vLCBJIGp1c3QgZHJvdmUg"
"YnkK")
content = content + suffix
return cbc.cipherAES128ECB(content, consistent_key)
def challenge12encrypt(content):
suffix = hex2base64.base642str(
"Um9sbGluJyBpbiBteSA1LjAKV2l0aCBteSByYWctdG9wIGRvd24gc28gbXkg"
"aGFpciBjYW4gYmxvdwpUaGUgZ2lybGllcyBvbiBzdGFuZGJ5IHdhdmluZyBq"
"dXN0IHRvIHNheSBoaQpEaWQgeW91IHN0b3A/IE5vLCBJIGp1c3QgZHJvdmUg"
"YnkK")
content = content + suffix
return cbc.cipherAES128ECB(content, consistent_key)
def encrypt(content):
global key
choice = padding.pkcs7_pad(hex2base64.base642str(content), 16)
print("Encrypting %s" % escapeString(choice))
key = generate_key(16)
iv = generate_key(16)
result = cbc.cipherAES128CBC(choice, key, iv)
return result, iv
def challenge14encrypt_with_prefixlength(content):
suffix = hex2base64.base642str("Um9sbGluJyBpbiBteSA1LjAKV2l0aCBteSByYWctdG9wIGRvd24gc28gbXkg"
"aGFpciBjYW4gYmxvdwpUaGUgZ2lybGllcyBvbiBzdGFuZGJ5IHdhdmluZyBq"
"dXN0IHRvIHNheSBoaQpEaWQgeW91IHN0b3A/IE5vLCBJIGp1c3QgZHJvdmUg"
"YnkK")
prefix = generate_key(random.randint(50, 150))
content = prefix + content + suffix
#print("To cipher: %s" % hex2base64.str2hex(content))
return cbc.cipherAES128ECB(content, consistent_key), len(prefix)
def challenge14encrypt_with_prefixlength(content):
suffix = hex2base64.base642str(
"Um9sbGluJyBpbiBteSA1LjAKV2l0aCBteSByYWctdG9wIGRvd24gc28gbXkg"
"aGFpciBjYW4gYmxvdwpUaGUgZ2lybGllcyBvbiBzdGFuZGJ5IHdhdmluZyBq"
"dXN0IHRvIHNheSBoaQpEaWQgeW91IHN0b3A/IE5vLCBJIGp1c3QgZHJvdmUg"
"YnkK")
prefix = generate_key(random.randint(50, 150))
content = prefix + content + suffix
#print("To cipher: %s" % hex2base64.str2hex(content))
return cbc.cipherAES128ECB(content, consistent_key), len(prefix)
def testBase642Str(self):
cases = {
"SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t": "I'm killing your brain like a poisonous mushroom",
"cGxlYXN1cmUu": "pleasure.",
"bGVhc3VyZS4=": "leasure.",
"ZWFzdXJlLg==": "easure.",
"YXN1cmUu": "asure.",
"c3VyZS4=": "sure.",
}
for i, o in cases.iteritems():
self.assertEqual(hex2base64.base642str(i), o)
def main():
to_decrypt = ("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"
"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"
"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"
"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")
cyphered = hex2base64.base642str(to_decrypt)
keysize_scores = findKeySizeXor(cyphered)
final_result, final_key, max_score = breakMultipleKeyXor(cyphered, [x[0] for x in keysize_scores[:5]])
print("Result: %s (score = %s, key = %s)" % (final_result, max_score, hex2str(final_key)))
def main():
to_decrypt = (
"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"
"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"
"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"
"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"
)
cyphered = hex2base64.base642str(to_decrypt)
keysize_scores = findKeySizeXor(cyphered)
final_result, final_key, max_score = breakMultipleKeyXor(
cyphered, [x[0] for x in keysize_scores[:5]])
print("Result: %s (score = %s, key = %s)" %
(final_result, max_score, hex2str(final_key)))
def decipher_message():
b64_ciphered = (
"CRIwqt4+szDbqkNY+I0qbDe3LQz0wiw0SuxBQtAM5TDdMbjCMD/venUDW9BL"
"PEXODbk6a48oMbAY6DDZsuLbc0uR9cp9hQ0QQGATyyCESq2NSsvhx5zKlLtz"
"dsnfK5ED5srKjK7Fz4Q38/ttd+stL/9WnDzlJvAo7WBsjI5YJc2gmAYayNfm"
"CW2lhZE/ZLG0CBD2aPw0W417QYb4cAIOW92jYRiJ4PTsBBHDe8o4JwqaUac6"
"rqdi833kbyAOV/Y2RMbN0oDb9Rq8uRHvbrqQJaJieaswEtMkgUt3P5Ttgeh7"
"J+hE6TR0uHot8WzHyAKNbUWHoi/5zcRCUipvVOYLoBZXlNu4qnwoCZRSBgvC"
"wTdz3Cbsp/P2wXB8tiz6l9rL2bLhBt13Qxyhhu0H0+JKj6soSeX5ZD1Rpilp"
"9ncR1tHW8+uurQKyXN4xKeGjaKLOejr2xDIw+aWF7GszU4qJhXBnXTIUUNUf"
"RlwEpS6FZcsMzemQF30ezSJHfpW7DVHzwiLyeiTJRKoVUwo43PXupnJXDmUy"
"sCa2nQz/iEwyor6kPekLv1csm1Pa2LZmbA9Ujzz8zb/gFXtQqBAN4zA8/wt0"
"VfoOsEZwcsaLOWUPtF/Ry3VhlKwXE7gGH/bbShAIKQqMqqUkEucZ3HPHAVp7"
"ZCn3Ox6+c5QJ3Uv8V7L7SprofPFN6F+kfDM4zAc59do5twgDoClCbxxG0L19"
"TBGHiYP3CygeY1HLMrX6KqypJfFJW5O9wNIF0qfOC2lWFgwayOwq41xdFSCW"
"0/EBSc7cJw3N06WThrW5LimAOt5L9c7Ik4YIxu0K9JZwAxfcU4ShYu6euYmW"
"LP98+qvRnIrXkePugS9TSOJOHzKUoOcb1/KYd9NZFHEcp58Df6rXFiz9DSq8"
"0rR5Kfs+M+Vuq5Z6zY98/SP0A6URIr9NFu+Cs9/gf+q4TRwsOzRMjMQzJL8f"
"7TXPEHH2+qEcpDKz/5pE0cvrgHr63XKu4XbzLCOBz0DoFAw3vkuxGwJq4Cpx"
"kt+eCtxSKUzNtXMn/mbPqPl4NZNJ8yzMqTFSODS4bYTBaN/uQYcOAF3NBYFd"
"5x9TzIAoW6ai13a8h/s9i5FlVRJDe2cetQhArrIVBquF0L0mUXMWNPFKkaQE"
"BsxpMCYh7pp7YlyCNode12k5jY1/lc8jQLQJ+EJHdCdM5t3emRzkPgND4a7O"
"NhoIkUUS2R1oEV1toDj9iDzGVFwOvWyt4GzA9XdxT333JU/n8m+N6hs23MBc"
"Z086kp9rJGVxZ5f80jRz3ZcjU6zWjR9ucRyjbsuVn1t4EJEm6A7KaHm13m0v"
"wN/O4KYTiiY3aO3siayjNrrNBpn1OeLv9UUneLSCdxcUqjRvOrdA5NYv25Hb"
"4wkFCIhC/Y2ze/kNyis6FrXtStcjKC1w9Kg8O25VXB1Fmpu+4nzpbNdJ9LXa"
"hF7wjOPXN6dixVKpzwTYjEFDSMaMhaTOTCaqJig97624wv79URbCgsyzwaC7"
"YXRtbTstbFuEFBee3uW7B3xXw72mymM2BS2uPQ5NIwmacbhta8aCRQEGqIZ0"
"78YrrOlZIjar3lbTCo5o6nbbDq9bvilirWG/SgWINuc3pWl5CscRcgQQNp7o"
"LBgrSkQkv9AjZYcvisnr89TxjoxBO0Y93jgp4T14LnVwWQVx3l3d6S1wlsci"
"dVeaM24E/JtS8k9XAvgSoKCjyiqsawBMzScXCIRCk6nqX8ZaJU3rZ0LeOMTU"
"w6MC4dC+aY9SrCvNQub19mBdtJUwOBOqGdfd5IoqQkaL6DfOkmpnsCs5PuLb"
"GZBVhah5L87IY7r6TB1V7KboXH8PZIYc1zlemMZGU0o7+etxZWHgpdeX6JbJ"
"Is3ilAzYqw/Hz65no7eUxcDg1aOaxemuPqnYRGhW6PvjZbwAtfQPlofhB0jT"
"Ht5bRlzF17rn9q/6wzlc1ssp2xmeFzXoxffpELABV6+yj3gfQ/bxIB9NWjdZ"
"K08RX9rjm9CcBlRQeTZrD67SYQWqRpT5t7zcVDnx1s7ZffLBWm/vXLfPzMaQ"
"YEJ4EfoduSutjshXvR+VQRPs2TWcF7OsaE4csedKUGFuo9DYfFIHFDNg+1Py"
"rlWJ0J/X0PduAuCZ+uQSsM/ex/vfXp6Z39ngq4exUXoPtAIqafrDMd8SuAty"
"EZhyY9V9Lp2qNQDbl6JI39bDz+6pDmjJ2jlnpMCezRK89cG11IqiUWvIPxHj"
"oiT1guH1uk4sQ2Pc1J4zjJNsZgoJDcPBbfss4kAqUJvQyFbzWshhtVeAv3dm"
"gwUENIhNK/erjpgw2BIRayzYw001jAIF5c7rYg38o6x3YdAtU3d3QpuwG5xD"
"fODxzfL3yEKQr48C/KqxI87uGwyg6H5gc2AcLU9JYt5QoDFoC7PFxcE3RVqc"
"7/Um9Js9X9UyriEjftWt86/tEyG7F9tWGxGNEZo3MOydwX/7jtwoxQE5ybFj"
"WndqLp8DV3naLQsh/Fz8JnTYHvOR72vuiw/x5D5PFuXV0aSVvmw5Wnb09q/B"
"owS14WzoHH6ekaWbh78xlypn/L/M+nIIEX1Ol3TaVOqIxvXZ2sjm86xRz0Ed"
"oHFfupSekdBULCqptxpFpBshZFvauUH8Ez7wA7wjL65GVlZ0f74U7MJVu9Sw"
"sZdgsLmnsQvr5n2ojNNBEv+qKG2wpUYTmWRaRc5EClUNfhzh8iDdHIsl6edO"
"ewORRrNiBay1NCzlfz1cj6VlYYQUM9bDEyqrwO400XQNpoFOxo4fxUdd+AHm"
"CBhHbyCR81/C6LQTG2JQBvjykG4pmoqnYPxDyeiCEG+JFHmP1IL+jggdjWhL"
"WQatslrWxuESEl3PEsrAkMF7gt0dBLgnWsc1cmzntG1rlXVi/Hs2TAU3RxEm"
"MSWDFubSivLWSqZj/XfGWwVpP6fsnsfxpY3d3h/fTxDu7U8GddaFRQhJ+0ZO"
"dx6nRJUW3u6xnhH3mYVRk88EMtpEpKrSIWfXphgDUPZ0f4agRzehkn9vtzCm"
"NjFnQb0/shnqTh4Mo/8oommbsBTUKPYS7/1oQCi12QABjJDt+LyUan+4iwvC"
"i0k0IUIHvk21381vC0ixYDZxzY64+xx/RNID+iplgzq9PDZgjc8L7jMg+2+m"
"rxPS56e71m5E2zufZ4d+nFjIg+dHD/ShNPzVpXizRVUERztLuak8Asah3/yv"
"wOrH1mKEMMGC1/6qfvZUgFLJH5V0Ep0n2K/Fbs0VljENIN8cjkCKdG8aBnef"
"EhITdV7CVjXcivQ6efkbOQCfkfcwWpaBFC8tD/zebXFE+JshW16D4EWXMnSm"
"/9HcGwHvtlAj04rwrZ5tRvAgf1IR83kqqiTvqfENcj7ddCFwtNZrQK7EJhgB"
"5Tr1tBFcb9InPRtS3KYteYHl3HWR9t8E2YGE8IGrS1sQibxaK/C0kKbqIrKp"
"npwtoOLsZPNbPw6K2jpko9NeZAx7PYFmamR4D50KtzgELQcaEsi5aCztMg7f"
"p1mK6ijyMKIRKwNKIYHagRRVLNgQLg/WTKzGVbWwq6kQaQyArwQCUXo4uRty"
"zGMaKbTG4dns1OFB1g7NCiPb6s1lv0/lHFAF6HwoYV/FPSL/pirxyDSBb/FR"
"RA3PIfmvGfMUGFVWlyS7+O73l5oIJHxuaJrR4EenzAu4Avpa5d+VuiYbM10a"
"LaVegVPvFn4pCP4U/Nbbw4OTCFX2HKmWEiVBB0O3J9xwXWpxN1Vr5CDi75Fq"
"NhxYCjgSJzWOUD34Y1dAfcj57VINmQVEWyc8Tch8vg9MnHGCOfOjRqp0VGyA"
"S15AVD2QS1V6fhRimJSVyT6QuGb8tKRsl2N+a2Xze36vgMhw7XK7zh//jC2H")
ciphered = hex2base64.base642str(b64_ciphered)
key = "YELLOW SUBMARINE"
deciphered = decipherAES128ECB(ciphered, key)
print(deciphered)
return content[0:index] + chr(ord(content[index]) ^ operand) + content[index+1:]
def findPadding(r, iv):
# Break the padding if != 1
r = xorChar(r, len(r)-18, 2)
r = xorChar(r, len(r)-19, 1)
for i in range(0, 255):
d = xorChar(r, len(r)-17, i)
if validPadding(d, iv):
return i ^ 1
return None
if False:
print("")
for s in input_strings:
print(hex2base64.base642str(s))
print("")
for s in input_strings:
print("=====")
r, iv = encrypt(s)
p = findPadding(r, iv)
print("Padding: %s" % p)
print("R : %s" % hex2base64.str2hex(r))
print("Found: %s" % chr(findChar(r2, iv, len(r)-p)))
print("")
print("Valid: %s" % validPadding(r, iv))
r = xorChar(r, len(r)-17, 1)
print("Valid: %s" % validPadding(r, iv))
def decipher_message():
b64_ciphered = ("CRIwqt4+szDbqkNY+I0qbNXPg1XLaCM5etQ5Bt9DRFV/xIN2k8Go7jtArLIy"
"P605b071DL8C+FPYSHOXPkMMMFPAKm+Nsu0nCBMQVt9mlluHbVE/yl6VaBCj"
"NuOGvHZ9WYvt51uR/lklZZ0ObqD5UaC1rupZwCEK4pIWf6JQ4pTyPjyiPtKX"
"g54FNQvbVIHeotUG2kHEvHGS/w2Tt4E42xEwVfi29J3yp0O/TcL7aoRZIcJj"
"MV4qxY/uvZLGsjo1/IyhtQp3vY0nSzJjGgaLYXpvRn8TaAcEtH3cqZenBoox"
"BH3MxNjD/TVf3NastEWGnqeGp+0D9bQx/3L0+xTf+k2VjBDrV9HPXNELRgPN"
"0MlNo79p2gEwWjfTbx2KbF6htgsbGgCMZ6/iCshy3R8/abxkl8eK/VfCGfA6"
"bQQkqs91bgsT0RgxXSWzjjvh4eXTSl8xYoMDCGa2opN/b6Q2MdfvW7rEvp5m"
"wJOfQFDtkv4M5cFEO3sjmU9MReRnCpvalG3ark0XC589rm+42jC4/oFWUdwv"
"kzGkSeoabAJdEJCifhvtGosYgvQDARUoNTQAO1+CbnwdKnA/WbQ59S9MU61Q"
"KcYSuk+jK5nAMDot2dPmvxZIeqbB6ax1IH0cdVx7qB/Z2FlJ/U927xGmC/RU"
"FwoXQDRqL05L22wEiF85HKx2XRVB0F7keglwX/kl4gga5rk3YrZ7VbInPpxU"
"zgEaE4+BDoEqbv/rYMuaeOuBIkVchmzXwlpPORwbN0/RUL89xwOJKCQQZM8B"
"1YsYOqeL3HGxKfpFo7kmArXSRKRHToXuBgDq07KS/jxaS1a1Paz/tvYHjLxw"
"Y0Ot3kS+cnBeq/FGSNL/fFV3J2a8eVvydsKat3XZS3WKcNNjY2ZEY1rHgcGL"
"5bhVHs67bxb/IGQleyY+EwLuv5eUwS3wljJkGcWeFhlqxNXQ6NDTzRNlBS0W"
"4CkNiDBMegCcOlPKC2ZLGw2ejgr2utoNfmRtehr+3LAhLMVjLyPSRQ/zDhHj"
"Xu+Kmt4elmTmqLgAUskiOiLYpr0zI7Pb4xsEkcxRFX9rKy5WV7NhJ1lR7BKy"
"alO94jWIL4kJmh4GoUEhO+vDCNtW49PEgQkundV8vmzxKarUHZ0xr4feL1ZJ"
"THinyUs/KUAJAZSAQ1Zx/S4dNj1HuchZzDDm/nE/Y3DeDhhNUwpggmesLDxF"
"tqJJ/BRn8cgwM6/SMFDWUnhkX/t8qJrHphcxBjAmIdIWxDi2d78LA6xhEPUw"
"NdPPhUrJcu5hvhDVXcceZLa+rJEmn4aftHm6/Q06WH7dq4RaaJePP6WHvQDp"
"zZJOIMSEisApfh3QvHqdbiybZdyErz+yXjPXlKWG90kOz6fx+GbvGcHqibb/"
"HUfcDosYA7lY4xY17llY5sibvWM91ohFN5jyDlHtngi7nWQgFcDNfSh77TDT"
"zltUp9NnSJSgNOOwoSSNWadm6+AgbXfQNX6oJFaU4LQiAsRNa7vX/9jRfi65"
"5uvujM4ob199CZVxEls10UI9pIemAQQ8z/3rgQ3eyL+fViyztUPg/2IvxOHv"
"eexE4owH4Fo/bRlhZK0mYIamVxsRADBuBlGqx1b0OuF4AoZZgUM4d8v3iyUu"
"feh0QQqOkvJK/svkYHn3mf4JlUb2MTgtRQNYdZKDRgF3Q0IJaZuMyPWFsSNT"
"YauWjMVqnj0AEDHh6QUMF8bXLM0jGwANP+r4yPdKJNsoZMpuVoUBJYWnDTV+"
"8Ive6ZgBi4EEbPbMLXuqDMpDi4XcLE0UUPJ8VnmO5fAHMQkA64esY2QqldZ+"
"5gEhjigueZjEf0917/X53ZYWJIRiICnmYPoM0GSYJRE0k3ycdlzZzljIGk+P"
"Q7WgeJhthisEBDbgTuppqKNXLbNZZG/VaTdbpW1ylBv0eqamFOmyrTyh1APS"
"Gn37comTI3fmN6/wmVnmV4/FblvVwLuDvGgSCGPOF8i6FVfKvdESs+yr+1AE"
"DJXfp6h0eNEUsM3gXaJCknGhnt3awtg1fSUiwpYfDKZxwpPOYUuer8Wi+VCD"
"sWsUpkMxhhRqOBKaQaBDQG+kVJu6aPFlnSPQQTi1hxLwi0l0Rr38xkr+lHU7"
"ix8LeJVgNsQdtxbovE3i7z3ZcTFY7uJkI9j9E0muDN9x8y/YN25rm6zULYaO"
"jUoP/7FQZsSgxPIUvUiXkEq+FU2h0FqAC7H18cr3Za5x5dpw5nwawMArKoqG"
"9qlhqc34lXV0ZYwULu58EImFIS8+kITFuu7jOeSXbBgbhx8zGPqavRXeiu0t"
"bJd0gWs+YgMLzXtQIbQuVZENMxJSZB4aw5lPA4vr1fFBsiU4unjOEo/XAgwr"
"Tc0w0UndJFPvXRr3Ir5rFoIEOdRo+6os5DSlk82SBnUjwbje7BWsxWMkVhYO"
"6bOGUm4VxcKWXu2jU66TxQVIHy7WHktMjioVlWJdZC5Hq0g1LHg1nWSmjPY2"
"c/odZqN+dBBC51dCt4oi5UKmKtU5gjZsRSTcTlfhGUd6DY4Tp3CZhHjQRH4l"
"Zhg0bF/ooPTxIjLKK4r0+yR0lyRjqIYEY27HJMhZDXFDxBQQ1UkUIhAvXacD"
"WB2pb3YyeSQjt8j/WSbQY6TzdLq8SreZiuMWcXmQk4EH3xu8bPsHlcvRI+B3"
"gxKeLnwrVJqVLkf3m2cSGnWQhSLGbnAtgQPA6z7u3gGbBmRtP0KnAHWSK7q6"
"onMoYTH+b5iFjCiVRqzUBVzRRKjAL4rcL2nYeV6Ec3PlnboRzJwZIjD6i7WC"
"dcxERr4WVOjOBX4fhhKUiVvlmlcu8CkIiSnZENHZCpI41ypoVqVarHpqh2aP"
"/PS624yfxx2N3C2ci7VIuH3DcSYcaTXEKhz/PRLJXkRgVlWxn7QuaJJzDvpB"
"oFndoRu1+XCsup/AtkLidsSXMFTo/2Ka739+BgYDuRt1mE9EyuYyCMoxO/27"
"sn1QWMMd1jtcv8Ze42MaM4y/PhAMp2RfCoVZALUS2K7XrOLl3s9LDFOdSrfD"
"8GeMciBbfLGoXDvv5Oqq0S/OvjdID94UMcadpnSNsist/kcJJV0wtRGfALG2"
"+UKYzEj/2TOiN75UlRvA5XgwfqajOvmIIXybbdhxpjnSB04X3iY82TNSYTmL"
"LAzZlX2vmV9IKRRimZ2SpzNpvLKeB8lDhIyGzGXdiynQjFMNcVjZlmWHsH7e"
"ItAKWmCwNkeuAfFwir4TTGrgG1pMje7XA7kMT821cYbLSiPAwtlC0wm77F0T"
"a7jdMrLjMO29+1958CEzWPdzdfqKzlfBzsba0+dS6mcW/YTHaB4bDyXechZB"
"k/35fUg+4geMj6PBTqLNNWXBX93dFC7fNyda+Lt9cVJnlhIi/61fr0KzxOeX"
"NKgePKOC3Rz+fWw7Bm58FlYTgRgN63yFWSKl4sMfzihaQq0R8NMQIOjzuMl3"
"Ie5ozSa+y9g4z52RRc69l4n4qzf0aErV/BEe7FrzRyWh4PkDj5wy5ECaRbfO"
"7rbs1EHlshFvXfGlLdEfP2kKpT9U32NKZ4h+Gr9ymqZ6isb1KfNov1rw0KSq"
"YNP+EyWCyLRJ3EcOYdvVwVb+vIiyzxnRdugB3vNzaNljHG5ypEJQaTLphIQn"
"lP02xcBpMNJN69bijVtnASN/TLV5ocYvtnWPTBKu3OyOkcflMaHCEUgHPW0f"
"mGfld4i9Tu35zrKvTDzfxkJX7+KJ72d/V+ksNKWvwn/wvMOZsa2EEOfdCidm"
"oql027IS5XvSHynQtvFmw0HTk9UXt8HdVNTqcdy/jUFmXpXNP2Wvn8PrU2Dh"
"kkIzWhQ5Rxd/vnM2QQr9Cxa2J9GXEV3kGDiZV90+PCDSVGY4VgF8y7GedI1h")
ciphered = hex2base64.base642str(b64_ciphered)
key = "YELLOW SUBMARINE"
deciphered = decipherAES128CBC(ciphered, key, '\x00'*16)
print(deciphered)