Totp length validation

[0x4f53]

♻️ Current situation

TOTPs with extremely short-length secrets (1-5 characters) are displayed inconsistently throughout the app.

💡 Proposed solution

Save a login containing a authenticator secret only if the secret length >= 6 characters. Display a discreet error in the text box otherwise.

Ideally, users copy and paste or scan a QR code to save this information, so the error accounts for an edge case where the user needs to type their secret into the authenticator secret text box.

📚 Release Notes

• Reduced minimum authenticator secret length from 8 to 6 throughout app.
• Added an error indicator to the authenticator text box if the secret is too short.

📝 Testing

1. Try saving a login where the authenticator secret is in range 1..5.
2. Tap the tick mark and observe the error icon in the authenticator secret text box.