61 lines
1.3 KiB
Python
61 lines
1.3 KiB
Python
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import sys
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import base64
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from cryptography.fernet import Fernet
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usage_msg = "Usage: "+ sys.argv[0] +" (-e/-d) [file]"
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help_msg = usage_msg + "\n" +\
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"Examples:\n" +\
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" To decrypt a file named 'pole.txt', do: " +\
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"'$ python "+ sys.argv[0] +" -d pole.txt'\n"
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if len(sys.argv) < 2 or len(sys.argv) > 4:
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print(usage_msg)
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sys.exit(1)
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if sys.argv[1] == "-e":
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if len(sys.argv) < 4:
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sim_sala_bim = input("Please enter the password:")
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else:
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sim_sala_bim = sys.argv[3]
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ssb_b64 = base64.b64encode(sim_sala_bim.encode())
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c = Fernet(ssb_b64)
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with open(sys.argv[2], "rb") as f:
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data = f.read()
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data_c = c.encrypt(data)
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sys.stdout.write(data_c.decode())
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elif sys.argv[1] == "-d":
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if len(sys.argv) < 4:
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sim_sala_bim = input("Please enter the password:")
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else:
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sim_sala_bim = sys.argv[3]
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ssb_b64 = base64.b64encode(sim_sala_bim.encode())
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c = Fernet(ssb_b64)
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with open(sys.argv[2], "r") as f:
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data = f.read()
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data_c = c.decrypt(data.encode())
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sys.stdout.buffer.write(data_c)
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elif sys.argv[1] == "-h" or sys.argv[1] == "--help":
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print(help_msg)
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sys.exit(1)
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else:
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print("Unrecognized first argument: "+ sys.argv[1])
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print("Please use '-e', '-d', or '-h'.")
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