Trying multisig. So I created electrum multisig-wallets on desktop. I can use desktop electrum to initiate sending and use the android electrum to cosign it, just fine. But I does not seem to work when initiate sending with android, then desktop to cosign. Ideally I have two android phones, I want them to cosign one another tx.
When android multisig wallet electrum sends coin, it says "Partially signed" with a QR code. I scanned that QR with another android electrum on the send tab. It says "wrong UPE" or something. I also scanned that with my desktop electrum (using load transaction..) It says "unable to parse".
Also android electrum only supports 6 digits password which can be brute forced within a blink, any plans to support characters.. ?
Not when there is a lockout policy. Big passwords typically lead to data-loss and bad practices for people who don't use a hardware key which has a bigger attack surface than short keys stored in their brain. The encrypted data protection itself has nothing to do with a password since no hardware isolation or policy isolation is used.
If I get free time I'll make a GIT fork and implement the Android keystore which uses hardware isolation on most devices. You can also put the encrypted data in a sandbox that is safe everywhere but jailbroken devices.