Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+# Oblivious HTTP
+
+This is a rust implementation of [Oblivious
+HTTP](https://ietf-wg-ohai.github.io/oblivious-http/draft-ietf-ohai-ohttp.html).
+
+This work is undergoing active revision in the IETF and so are these
+implementations.  Use at your own risk.
+
+This crate uses either [hpke](https://github.com/rozbb/rust-hpke) or
+[NSS](https://firefox-source-docs.mozilla.org/security/nss/index.html) for
+cryptographic primitives.
+
+
+## Using
+
+The API documentation is currently sparse, but the API is fairly small and
+descriptive.
+
+The `ohttp` crate has the following features:
+
+- `client` enables the client-side processing of oblivious HTTP messages:
+  encrypting requests and decrypting responses.  This is enabled by default.
+
+- `server` enables the server-side processing of oblivious HTTP messages:
+  decrypting requests and encrypting responses.  This is enabled by default.
+
+- `rust-hpke` selects the [hpke](https://github.com/rozbb/rust-hpke) crate for
+  HPKE encryption.  This is enabled by default and cannot be enabled at the same
+  time as `nss`.
+
+- `nss` selects
+  [NSS](https://firefox-source-docs.mozilla.org/security/nss/index.html).  This is
+  disabled by default and cannot be enabled at the same time as `rust-hpke`.