GPG –edit-key 以“無密鑰”失敗，即使 –list-secret-keys 和 –sign 按預期工作

我想刷新 UID 並推遲到期日期，但我明白了。

gpg --edit-key n.dwek@hotmail.com 
gpg (GnuPG) 2.1.15; Copyright (C) 2016 Free Software Foundation, Inc.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Secret key is available.

pub  rsa4096/0x03FFE7DE7AEFDD3B
    created: 2014-09-21  expires: 2017-09-20  usage: SC  
    trust: ultimate      validity: ultimate
ssb  rsa4096/0x612502E7B5475FF9
    created: 2014-09-21  expires: 2017-09-20  usage: E   
ssb  rsa4096/0x6777F12E17534B8E
    created: 2014-09-21  expires: 2017-09-20  usage: S   
[ultimate] (1). Nathan DWEK <dwek95@hotmail.com>
[ultimate] (2)  Nathan DWEK <n.dwek@hotmail.com>

gpg> expire
Changing expiration time for the primary key.
gpg: WARNING: no user ID has been marked as primary.  This command may
             cause a different user ID to become the assumed primary.
Please specify how long the key should be valid.
        0 = key does not expire
     <n>  = key expires in n days
     <n>w = key expires in n weeks
     <n>m = key expires in n months
     <n>y = key expires in n years
Key is valid for? (0) 2y
Key expires at jeu 19 sep 2019 12:19:31 CEST
Is this correct? (y/N) y
gpg: signing failed: No secret key
gpg: make_keysig_packet failed: No secret key

然而：

gpg --list-secret-keys 
/home/nathdwek/.gnupg/pubring.gpg
---------------------------------
sec#  rsa4096/0x03FFE7DE7AEFDD3B 2014-09-21 [SC] [expires: 2017-09-20]
     Key fingerprint = 1A12 B5ED F67A 947C B616  6FCC 03FF E7DE 7AEF DD3B
uid                   [ultimate] Nathan DWEK <dwek95@hotmail.com>
uid                   [ultimate] Nathan DWEK <n.dwek@hotmail.com>
ssb   rsa4096/0x612502E7B5475FF9 2014-09-21 [E] [expires: 2017-09-20]
ssb   rsa4096/0x6777F12E17534B8E 2014-09-21 [S] [expires: 2017-09-20]

簽名和使用 pass，一個基於 gpg 的密碼管理器已經完美執行了很長時間。我在帶有肉桂的 Ubuntu 17.04 上。

我正在使用離線主密鑰並使用子密鑰進行簽名和解密。這顯示#在我的萬能鑰匙前面。

這就是為什麼我無法執行的唯一操作是密鑰簽名操作。

引用自：https://unix.stackexchange.com/questions/393162