Purpose

Tunnel AES-encrypted SOCKS-5 networking with IPv6 supported

Building

install mbedtls, then run

make

Example

Generate AES-256 key for both Desktop and VPS:

dd if=/dev/random bs=32 count=1 of=aeskey

Launch plain SOCKS-5 proxy on VPS, for example with axproxy, another project here:

axproxy -v [::1]:8080

Start SocksCrypt on VPS, server-side:

./bin/sockscrypt -vs aeskey 0.0.0.0:8081 [::1]:8080

Then launch SocksCrypt on Desktop, client-side:

./bin/sockscrypt -vc aeskey [::1]:8082 <vps-ipv4>:8080

Finally check the connection with curl, client-side:

curl -x socks5h://[::1]:8082 https://ipinfo.io/json -o -

Ports used in the example:

• 8080 - Incoming plaintext Socks-5 data on VPS
• 8081 - Incoming ciphertext Socks-5 data on VPS
• 8082 - Gateway on Desktop for connections to be tunneled

Help message

[skcr] SocksCrypt - ver. 1.05.1a
[skcr] usage: sockscrypt [-vdcs] aeskey-file listen-addr:listen-port endp-addr:endp-port

       option -v         Enable verbose logging
       option -d         Run in background
       option -c         Client-side mode
       option -s         Server-side mode
       aeskey-file       Plain AES-256 key file
       listen-addr       Gateway address
       listen-port       Gateway port
       endp-addr         Endpoint address
       endp-port         Endpoint port

Note: Both IPv4 and IPv6 can be used