編輯：對不起，混亂。其實我想知道是否可以使用私鑰進行加密。 （這也自動意味着簽名。） 我希望通過運行腳本在C程序中完成此操作。GNU/Linux gpg如何使用私鑰加密
順便說一句，用私有密鑰加密一個好主意，發送簽名郵件到觀衆將與我的公鑰解密呢？
老問題： 如何「標誌」使用GNU/Linux中我自己的私鑰GPG文件？我看到了man page，但它沒有提供任何有關這方面的信息。 另外，對方如何驗證以這種方式創建的簽名？
如果可能，請給出命令行選項來完成此操作。
我看到了其他的問題，但他們談論Android，JAVA等。我只想要命令行選項。 thx。
手冊頁實際上確實提供有關簽署信息。
有3點主要的選擇：
-s/--sign
-a ASCII使用裝甲選項--sign並與--clearsign
-b/--detach-sign
-a這裏是我做的每一個反過來，然後再驗證的例子。
嵌入式簽名，修改原始文件（要求使用gpg -d獲得該文件的原始內容）。
$ cp /etc/issue .
$ gpg -sa <issue>issue.asc
You need a passphrase to unlock the secret key for
user: "Rsaw Rsaw <[email protected]>"
2048-bit RSA key, ID 211A2D3E, created 2012-08-24
$ cat issue.asc
-----BEGIN PGP MESSAGE-----
Version: GnuPG v1.4.12 (GNU/Linux)
owEBcQGO/pANAwACASZpDtshGi0+ActBYgBQoI3pRmVkb3JhIHJlbGVhc2UgMTcg
KEJlZWZ5IE1pcmFjbGUpCktlcm5lbCBcciBvbiBhbiBcbSAoXGwpCgqJARwEAAEC
AAYFAlCgjekACgkQJmkO2yEaLT5C3Af/fGDDoCA+6ddDUqbOZa96RNZrQPvvuT2m
ZnPEnXonqkTEf0OLOJFHWPTsMK5SKdSWx14gvaiSbQTGTKdqUiaSBfBs+tenJ39S
zQrZPctqKYvBbk848qiBO6tHgf8npNmg2yeY2YKjR6+02bHadg9wiujjazutuSKY
xEDvaIoDpCl1bsbOF7ZI8zxcpFx366PZybC/fEvA+R4sDFP4QiYDPg0MKmrUlsJa
1l9gE8e1LEZC2wXDuSCffL6dODFbCvHgU4IyUze1lX5CZHFPs5Y9kI+yBb9f9sYH
UzOHJDISHMephS1WPqP5JXlkwiiUNTEk4qnTQRalud+yAHBeEZtrtA==
=fYHs
-----END PGP MESSAGE-----
$ gpg --verify issue.asc
gpg: Signature made Mon 12 Nov 2012 12:49:29 AM EST using RSA key ID 211A2D3E
gpg: Good signature from "Rsaw Rsaw <[email protected]>"
$ gpg -d issue.asc
Fedora release 17 (Beefy Miracle)
Kernel \r on an \m (\l)
gpg: Signature made Mon 12 Nov 2012 12:49:29 AM EST using RSA key ID 211A2D3E
gpg: Good signature from "Rsaw Rsaw <[email protected]>"
包裝清除簽名。
$ gpg -s --clearsign <issue>issue.asc
You need a passphrase to unlock the secret key for
user: "Rsaw Rsaw <[email protected]>"
2048-bit RSA key, ID 211A2D3E, created 2012-08-24
$ cat issue.asc
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Fedora release 17 (Beefy Miracle)
Kernel \r on an \m (\l)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAEBAgAGBQJQoI65AAoJECZpDtshGi0+XLwH/0q7M+6aVvM2XMwy36R+zbYv
IjF/GBUgEFRO53a0xCi6lhw10Wp4tpmZLeJJwFb2xNGu7/1SaB4pk/PhSk4xU5Bx
3FepXaHvbwoB+Km2jqCnB1BNowJa4UecPk7pBoBPbBFv6GomecMYv1a3tORStmwe
3UIF99HgCilivjbJoGI6h7en7yq2LwwQLpHNs8dY8rlurQfHM5CMv5RpF9jCDEJS
MHKN52Urcx1/ROam/YjyP+Pa+PZF4x19q+obdHOsNCyqAIlYcfsUjCoiCGF8FjPM
00ha0aaw9dHezmqyAE9nWE5SYB571iVcO1xIoGk+jl78HSwpxpf5hssavDwT2go=
=o6WZ
-----END PGP SIGNATURE-----
$ gpg -v issue.asc
gpg: armor header: Hash: SHA1
gpg: armor header: Version: GnuPG v1.4.12 (GNU/Linux)
gpg: original file name=''
File `issue' exists. Overwrite? (y/N)
gpg: Interrupt caught ... exiting
$ gpg --verify issue.asc
gpg: Signature made Mon 12 Nov 2012 12:52:57 AM EST using RSA key ID 211A2D3E
gpg: Good signature from "Rsaw Rsaw <[email protected]>"
$ gpg -d issue.asc
Fedora release 17 (Beefy Miracle)
Kernel \r on an \m (\l)
gpg: Signature made Mon 12 Nov 2012 12:52:57 AM EST using RSA key ID 211A2D3E
gpg: Good signature from "Rsaw Rsaw <[email protected]>"
分離簽名（需要相同的名稱作爲簽名文件，加上.sig或.asc分機或要求用戶明確指定兩個分離的-SIG-文件和簽名文件）。
$ gpg -ba <issue>issue.sig
You need a passphrase to unlock the secret key for
user: "Rsaw Rsaw <[email protected]>"
2048-bit RSA key, ID 211A2D3E, created 2012-08-24
$ cat issue.sig
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAABAgAGBQJQoI8zAAoJECZpDtshGi0+x2cH/RsM2LAeXTZkL792jJTVyoyg
Iz/RT3aBZqnqXu2H4O2YB897Qr4vbnoCc5uaTxm4z4jujkRs5l5vfL184Yui+o9g
eJW/Q+RegiMdgZMGY48xqz0sJMM1q2nJGy1c5qqX59IuUzslVkw+HxzPnChQHDBV
B7EraKoIvJS8KzHdXF/sQtUnJAlg4ItKW/uc/gNRz7G2O9tCdyTuddlTA6b3dV0I
gYCeF3TMgBMpkrDyYmVc9BkheIZDwy9ce1sRDYFmGpbD/Smae4mXeTgurEbe2bFJ
TqRkB4tMMl4xRd1s+Wtbj3f3hxsLTZn3Wq1n9UlL5Ga/+Tx3gZQAIUYLPwwyD7k=
=G2Qp
-----END PGP SIGNATURE-----
$ gpg --verify issue.sig
gpg: Signature made Mon 12 Nov 2012 12:54:59 AM EST using RSA key ID 211A2D3E
gpg: Good signature from "Rsaw Rsaw <[email protected]>"
$ mv issue.sig my-issue.sig
$ gpg --verify -v my-issue.sig
gpg: armor header: Version: GnuPG v1.4.12 (GNU/Linux)
gpg: no signed data
gpg: can't hash datafile: file open error
$ gpg --verify my-issue.sig issue
gpg: Signature made Mon 12 Nov 2012 12:54:59 AM EST using RSA key ID 211A2D3E
gpg: Good signature from "Rsaw Rsaw <[email protected]>"
$ mv my-issue.sig issue.asc
$ gpg -v --verify issue.asc
gpg: armor header: Version: GnuPG v1.4.12 (GNU/Linux)
gpg: assuming signed data in `issue'
gpg: Signature made Mon 12 Nov 2012 12:54:59 AM EST using RSA key ID 211A2D3E
gpg: using PGP trust model
gpg: Good signature from "Rsaw Rsaw <[email protected]>"
gpg: binary signature, digest algorithm SHA1
所以應該涵蓋。
爲了將來的參考，這個問題不應該發佈在Stackoverflow上，可能會被移動或關閉。它屬於Unix and Linux或Superuser。
回覆您的編輯：是的，您可以同時加密和簽名。只需使用'--symmetric'和/或'--encrypt --recipient KEYID'與'--sign'配合使用。如果您需要幫助，請閱讀手冊頁或在我提到的其中一個網站上提出問題。 – rsaw