def encrypt(self, private_key, plaintext):
try:
Logger.printMessage(
message='{methodName}'.format(methodName='encrypt'),
description='{private_key} - {msg}'.format(
private_key=private_key, msg=plaintext[0:10]),
debug_module=True)
#Unpack the key into it's components
key, n = private_key
ba64 = base64.b64encode(plaintext)
ashex = Utils.asciiToHex(ba64)
hexba64 = Utils.hexToBase64(ashex)
ba64un = Utils.joinBase64(hexba64)
decasc = Utils.decimalToAscii(ba64un)
mensaje = Utils.textToAscii(decasc)
Logger.printMessage(
message='{methodName}'.format(methodName='encrypt'),
description='{msg} - Length: {l}'.format(msg=mensaje[0:10],
l=len(mensaje)),
debug_module=True)
mensaje1 = [(ord(chr(char))**key) % n for char in mensaje]
mensajeHex = Utils.asciiToHex(mensaje1)
mensajeBase64 = Utils.hexToBase64(mensajeHex)
mensajeFinalBase64 = Utils.joinBase64(mensajeBase64)
return mensajeFinalBase64.decode("utf-8")
except Exception as e:
Logger.printMessage(
message='{methodName}'.format(methodName='encrypt'),
description='{msg}'.format(msg=e))
return
def decrypt(self, public_key, ciphertext):
Logger.printMessage(
message='{methodName}'.format(methodName='decrypt'),
description='{public_key}'.format(public_key=public_key),
debug_module=True)
#Unpack the key into its components
key, n = public_key
menRec = Utils.asciiToBase64(ciphertext.encode('utf-8'))
menHex = Utils.base64ToHex(menRec)
menDec = Utils.hexToDecimal(menHex)
Logger.printMessage(
message='{methodName}'.format(methodName='decrypt'),
description='{msg}'.format(msg=menDec[0:10]),
debug_module=True)
menDesc = [((char**key) % n) for char in menDec]
menAscii = Utils.decimalToAscii(menDesc)
decasc = Utils.asciiToBase64(''.join(menAscii).encode())
hexba64 = Utils.base64ToHex(decasc)
ashex = Utils.hexToDecimal(hexba64)
deasc = Utils.decimalToAscii(ashex)
ba64 = base64.b64decode(deasc.encode())
return ba64
