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54 lines
1.4 KiB
54 lines
1.4 KiB
6 years ago
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#!/usr/bin/env python3
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import os, sys, tempfile,getopt
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from cryptography.fernet import Fernet
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def main():
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try:
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opts, args = getopt.getopt(sys.argv[1:],'k:K:n')
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except:
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usage()
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sys.exit(2)
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key = ''
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for opt, val in opts:
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if opt == '-n':
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# Print a new key and exit
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print(Fernet.generate_key().decode())
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exit(0)
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if opt == '-k':
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key = val
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elif opt == '-K':
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key = open(arg, 'rb').read()
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if key == '':
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usage()
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sys.exit(2)
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# Create a fernet object using our key
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f = Fernet(key)
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# This temp file will hold the decrypted content while we edit it
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tmp = tempfile.NamedTemporaryFile()
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# We open the file, which contains the encrypted content
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crypt = open(args[0], 'rb').read()
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# And we decrypt it, and write it in the temp file
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clear = f.decrypt(crypt)
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tmp.write(clear)
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tmp.flush()
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# Now, lets open our favorite editor to edit the file
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os.system(os.getenv('EDITOR', 'vim') + ' ' + tmp.name)
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# We closed the editor, we just have to open the cleartext file, encrypt its content
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# and save it
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clear = open(tmp.name, 'rb').read()
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os.unlink(tmp.name)
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wcrypt = open(args[0], 'wb')
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wcrypt.write(f.encrypt(clear))
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wcrypt.flush()
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wcrypt.close()
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def usage():
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print(argv[0] + ' [-k secret] [-K ./secret.txt] variables.json')
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if __name__ == '__main__':
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main()
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