this is a c library with lua binding which can encrypt bytes just like openssl app.
there is only one interface.
int encrypt_bytes(char *passphrase, char *plaintext, char **p, size_t *size)
the result is same as echo -n "127.0.0.1:62863" | openssl enc -e -aes-256-cbc -a -salt -k "[Passphrase]"
This library is using on client of Frontd
openssl.c
is basicly a modified version of openssl