## Cryptographic specifications The initial key exchange is performed with elliptic-curve Diffie-Hellman. General data exchange is encrypted with AES-GCM. During regular communication payloads are Base64 encoded before being encrypted to prevent delimiter conflicts. SHA-256 hashes of files are compared to ensure data integrity. ## Usage Check [releases](https://github.com/17ms/contego/releases) for an up-to-date executables or build from source with `cargo build --release`. ### Server ``` Usage: contego host [OPTIONS] --key <--source |--files ...> Options: -k, --key Access key -s, --source Path to a source file (alternative to --files) -f, --files ... Paths to shareable files (alternative to --source) -p, --port Host port [default: 8080] -6, --ipv6 IPv6 instead of IPv4 -c, --chunksize Transmit chunksize in bytes [default: 8192] -l, --local Host locally -h, --help Print help ``` ### Client ``` Usage: contego connect --addr --out --key Options: -a, --addr IP address of the instance -o, --out Path to an output folder -k, --key Access key -h, --help Print help ```