What did you sign with? Free signature This software will automatically generate two texts, key.key and cert.cer, in the data folder of the C drive on your mobile phone after you install it, and set them in turn in the settings: self-signed certificate cert.cer; Self-signed key. ; Self-signed key password (not filled in); Signing certificate cert.cer；; Signature key. . Key; Sign the secret key and password (no need to fill in), and everything else will do!