ref: 9c08f284426a1b921959d7bd74ab3a8ddd19eac4
dir: /LICENSE.txt/
This component of Racket is distributed under the under the Apache 2.0 and MIT licenses. The user can choose the license under which they will be using the software. There may be other licenses within the distribution with which the user must also comply. See the files https://github.com/racket/racket/blob/master/racket/src/LICENSE-APACHE.txt and https://github.com/racket/racket/blob/master/racket/src/LICENSE-MIT.txt for the full text of the licenses. The SHA-256 implementation is from mbed TLS. mbed TLS is licensed under the Apache v2.0 License.