*ring* uses an "ISC" license, like BoringSSL used to use, for new code
files. See LICENSE-other-bits for the text of that license.
See LICENSE-BoringSSL for code that was sourced from BoringSSL under the
Apache 2.0 license. Some code that was sourced from BoringSSL under the ISC
license. In each case, the license info is at the top of the file.
See src/polyfill/once_cell/LICENSE-APACHE and src/polyfill/once_cell/LICENSE-MIT
for the license to code that was sourced from the once_cell project.