Issue with signing content

[abdallah-odeh]

Hello @prongbang
I downloaded your sample project to test it out if it fits my need
I found an issue with signing content! it throws an error PlatformException: code:Error, message:Biometric is error, details:null

my question is, how do you sign the payload? since biometric is always returning different key, how is the encryption/decryption work?

because when I request signing request I pass a key but also I am prompt to authenticate my fingerprint!
verify signed payload does the same, I pass the key but a biometric prompt pops up!

if you are using the passed key then why am I prompted to authenticate my biometric?
and if you are not using the passed key & using the generated from biometric auth, then the key will definitely be different than the signing key which will to incorrect decrypted data!