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