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Notes on -privkey/-privkey-file/-pubkey/-pubkey-file.

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David Fifield
2020-04-19 10:10:15 -06:00
parent 0567fa9abb
commit 3bd72bf336
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README
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@@ -219,3 +219,24 @@ KCP
DNS messages
DoH / DoT / UDP DNS
```
When you run `dnstt-server -gen-key`, you can save the private and
public keys to a file using the `-privkey-file` and `-pubkey-file`
options. You can then load the keys later using `-privkey-file` on the
server and `-pubkey-file` on the client. Alternatively, you can deal
with the keys as literal hexadecimal strings rather than files. If you
run `dnstt-server -gen-key` without the `-privkey-file` and
`-pubkey-file` options, it will display the keys rather than save them
to files. You can then use the keys with `-privkey` on the server and
`-pubkey` on the client.
```
$ ./dnstt-server -gen-key
privkey 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef
pubkey 0000111122223333444455556666777788889999aaaabbbbccccddddeeeeffff
$ ./dnstt-server -udp 127.0.0.1:5300 -privkey 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef t.example.com 127.0.0.1:8000
$ ./dnstt-client -dot dot.example:853 -pubkey 0000111122223333444455556666777788889999aaaabbbbccccddddeeeeffff t.example.com 127.0.0.1:7000
```
If you run the server without `-privkey-file` or `-privkey`, it will
generate a temporary keypair and print the public key in the log. But
the key will be different the next time you restart the server, and you
will have to reconfigure clients.