gpg gpgme-1.9.0.tar.bz2.sig
gpg: WARNING: no command supplied. Trying to guess what you mean ...
gpg: assuming signed data in 'gpgme-1.9.0.tar.bz2'
gpg: Signature made Tue 28 Mar 2017 10:36:41 PM HKT
gpg: using RSA key D8692123C4065DEA5E0F3AB5249B39D24F25E3B6
gpg: Good signature from "Werner Koch (dist sig)" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: D869 2123 C406 5DEA 5E0F 3AB5 249B 39D2 4F25 E3B6
您可以看到using RSA key D8692123C4065DEA5E0F3AB5249B39D24F25E3B6，获得了RSA密钥D8692123C4065DEA5E0F3AB5249B39D24F25E3B6
在第二行gpg: WARNING: no command supplied. Trying to guess what you mean ...中，没有提供命令，try to guess表示gpg filename不是在文件名中获取RSA密钥的正式方法，是否有正式的命令来获取rsa密钥形式sig文件？