Script security - password protection

[jmoreira-valory]

Feature to protect keys generated by the script.

IMPORTANT: In order to be merged, this PR requires a version of the trader that supports a version of Open Autonomy including this fix: valory-xyz/open-autonomy#2108

[jmoreira-valory]

Bug valory-xyz/open-autonomy#2088 has been fixed on valory-xyz/open-autonomy#2108
Bug valory-xyz/open-autonomy#2089 has been fixed on valory-xyz/open-autonomy#2108

[Adamantios]

Tested this and the password is not enforced. I do not agree with releasing this as is.

[jmoreira-valory]

Tested this and the password is not enforced. I do not agree with releasing this as is.

Please clarify what enforcements and where.

[Adamantios]

Tested this and the password is not enforced. I do not agree with releasing this as is.

Please clarify what enforcements and where.

I first used password test.
Then I decided to test changing the password. Message said it succeeded.
Then I ran the script again but tried the old password. It worked. Then I tried a totally irrelevant password, neither the old nor the new one. It worked. Instead, it should only proceed when the password is correct, but it seems that the password is never checked.

[Adamantios]

Tested this again. The script just validates the password later and not immediately.

[jmoreira-valory]

Tested this again. The script just validates the password later and not immediately.

The script validates the password after downloading the trader repository.
It needs the Open Autonomy packages to try decrypt the passowrd and decide if it validates it or not.

Possible UX improvement:

1. First download trader repo.
2. Ask for password
3. Validate password

(currently we have 2, 1, 3)