libntruprime: CLI

NAME

sntrup - command-line interface for the libntruprime implementation of the Streamlined NTRU Prime cryptosystem

SYNOPSIS

Key generation (for, e.g., sntrup1277):

sntrup1277-keypair 5>publickey 9>secretkey

Encapsulation (for, e.g., sntrup1277):

sntrup1277-enc >ciphertext 7>sessionkey 4<publickey

Decapsulation (for, e.g., sntrup1277):

sntrup1277-dec 7>sessionkey <ciphertext 8<secretkey

DESCRIPTION

libntruprime is an implementation of the Streamlined NTRU Prime cryptosystem. The command-line interface for libntruprime provides the following command-line tools:

sntrup{653,761,857,953,1013,1277}-keypair
sntrup{653,761,857,953,1013,1277}-enc
sntrup{653,761,857,953,1013,1277}-dec

Each tool exits 0 on success, nonzero on failure.

These tools allow libntruprime to be easily used from shell scripts. Other languages can also use libntruprime via these tools, but languages typically have good support for FFI and can use the C interface directly.

The details below use sntrup1277 as an example.

KEY GENERATION

Alice runs the sntrup1277-keypair command. This command randomly generates Alice's secret key and Alice's corresponding public key. It writes the public key to file descriptor 5, and then writes the secret key to file descriptor 9.

ENCAPSULATION

Bob runs the sntrup1277-enc command. This command reads Alice's public key from file descriptor 4. It randomly generates a ciphertext and the corresponding session key. It writes the ciphertext to stdout, and then writes the session key to file descriptor 7.

DECAPSULATION