Use SEP-0053 in SEP-0010 instead of malformed transactions

[johansten]

IIRC the motivation for this hack was originally to be able to support hardware wallets.
With the Ledger signer adopting SEP-0053 signatures, maybe it's time to get rid of this?

A more sophisticated signing infrastructure would rightfully not sign anything that looks like a transaction if the intent is for a message signature, and it would rightfully reject a malformed transaction if the intent was to sign a transaction.

This hack fits neither or.

[leighmcculloch]

this hack...maybe it's time to get rid of this?

What is the hack being referred to in the comment, or that is being proposed to be removed?

[johansten]

The hack is using malformed transactions.