crypto: update keytool to generate NodeConfig

[joyqvq]

target/debug/sui keytool generate bls12381
target/debug/sui keytool load-keypair bls-0x24fbce9512906c15cdf365feadbfed8464a93416.key
Protocol Keypair: WVAQ4wPlcDrbl2ldtFlAmmAFw4JKl16VE8VA28zNQsqDuxuJPvxRL1Mdf6EAhgY+2H7THQQL0UDCSvykpKIf/xU11SLyPDrz2nKr6N0nVwQYcJLlZWZLUloxn7R+4zvuzU+Dbt8M0ofu3Uxdlway4/Y18MrNwOvrxqWruMxsaNc=

target/debug/sui keytool generate ed25519
target/debug/sui keytool load-keypair 0x3de3f70ca167dd1d611778d7da282c5c6ebccfe5.key
Account Keypair: AEp0ggg5sVrm0kACB63cWRnYFnS+hxeg8Va1ovcvp4vTeJxwbxnlwdfl0AMXgvLLmE4KNkQrmh4V9ijYA3aq4m4=
Network Keypair: eJxwbxnlwdfl0AMXgvLLmE4KNkQrmh4V9ijYA3aq4m5KdIIIObFa5tJAAget3FkZ2BZ0vocXoPFWtaL3L6eL0w==
Worker Keypair: eJxwbxnlwdfl0AMXgvLLmE4KNkQrmh4V9ijYA3aq4m5KdIIIObFa5tJAAget3FkZ2BZ0vocXoPFWtaL3L6eL0w==

verified length:

>>> len(base64.b64decode('WVAQ4wPlcDrbl2ldtFlAmmAFw4JKl16VE8VA28zNQsqDuxuJPvxRL1Mdf6EAhgY+2H7THQQL0UDCSvykpKIf/xU11SLyPDrz2nKr6N0nVwQYcJLlZWZLUloxn7R+4zvuzU+Dbt8M0ofu3Uxdlway4/Y18MrNwOvrxqWruMxsaNc='))
128
>>> len(base64.b64decode('AEp0ggg5sVrm0kACB63cWRnYFnS+hxeg8Va1ovcvp4vTeJxwbxnlwdfl0AMXgvLLmE4KNkQrmh4V9ijYA3aq4m4='))
65
>>> len(base64.b64decode('eJxwbxnlwdfl0AMXgvLLmE4KNkQrmh4V9ijYA3aq4m5KdIIIObFa5tJAAget3FkZ2BZ0vocXoPFWtaL3L6eL0w=='))
64

[kchalkias]

Approving with an extra comment for reconsidering key encoding alignment even between different key purposes. The more we divert, the more work we need to do to educate people + debug.

[kchalkias]

Do we prefer not storing the flag for anything apart from account keys? Atm it makes sense as we don't provide crypto agility in these operations, we might however want to reconsider this in the future to have some consistency re key management.

[joyqvq]

agreed, left it because this involves adding BLS to enum, therefore to all switch clause on key types. it is quite a large change that i decide to leave out, but worth a revisit to add them eventually.