Adding support for KMS "encryption context" #18
Merged
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This PR adds support for Encryption Contexts. I've implemented it so as to be backwards compatible with all existing credstash interfaces.
I had to change from using a single global argparse to use subparsers in order to allow for the differing expected positional arguments for each action. Previously this was worked around in the
put
command by having anargs='?'
setting for thevalue
argument. Using subparsers will accommodate the differing expected positional arguments. It also makes the usage clearer as to what's expected for each different action.I figured using positional arguments for the encryption contexts in a
key=value
format would work best but I'm happy to change this to some other format (optional--foo
arguments, one argument for the key and one for the value, etc)This should address issues #13 and #17