Callback type for external signing functions.
Receives a 32-byte digest and must return a 64-byte Fuel compact signature (r[32] + s[32] with recovery ID embedded in the MSB of s[0]).
Use toFuelCompactSignature to convert standard (r, s, recoveryId) components to the expected format.
(r, s, recoveryId)
Callback type for external signing functions.
Receives a 32-byte digest and must return a 64-byte Fuel compact signature (r[32] + s[32] with recovery ID embedded in the MSB of s[0]).
Use toFuelCompactSignature to convert standard
(r, s, recoveryId)components to the expected format.