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| author | Stephen Farrell <stephen.farrell@cs.tcd.ie> | 2022-11-22 02:42:04 +0000 |
|---|---|---|
| committer | Matt Caswell <matt@openssl.org> | 2022-11-25 16:26:55 +0000 |
| commit | ad062480f7490197b174edad8625ce40d74f6e68 (patch) | |
| tree | f4ac43084558412509820b4d167b4c2906f5cfb2 /CHANGES.md | |
| parent | 0dbd3a81e46dd7ea9f7832307fdd0b2ac207a5bf (diff) | |
Implements Hybrid Public Key Encryption (HPKE) as per RFC9180.
This supports all the modes, suites and export mechanisms defined
in RFC9180 and should be relatively easily extensible if/as new
suites are added. The APIs are based on the pseudo-code from the
RFC, e.g. OSS_HPKE_encap() roughly maps to SetupBaseS(). External
APIs are defined in include/openssl/hpke.h and documented in
doc/man3/OSSL_HPKE_CTX_new.pod. Tests (test/hpke_test.c) include
verifying a number of the test vectors from the RFC as well as
round-tripping for all the modes and suites. We have demonstrated
interoperability with other HPKE implementations via a fork [1]
that implements TLS Encrypted ClientHello (ECH) which uses HPKE.
@slontis provided huge help in getting this done and this makes
extensive use of the KEM handling code from his PR#19068.
[1] https://github.com/sftcd/openssl/tree/ECH-draft-13c
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17172)
Diffstat (limited to 'CHANGES.md')
| -rw-r--r-- | CHANGES.md | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/CHANGES.md b/CHANGES.md index ede13f7d79..1e91bcda2d 100644 --- a/CHANGES.md +++ b/CHANGES.md @@ -24,6 +24,15 @@ OpenSSL 3.2 ### Changes between 3.0 and 3.2 [xx XXX xxxx] + * Added support for Hybrid Public Key Encryption (HPKE) as defined + in RFC9180. HPKE is required for TLS Encrypted ClientHello (ECH), + Message Layer Security (MLS) and other IETF specifications. + HPKE can also be used by other applications that require + encrypting "to" an ECDH public key. External APIs are defined in + include/openssl/hpke.h and documented in doc/man3/OSSL_HPKE_CTX_new.pod + + *Stephen Farrell* + * Add support for certificate compression (RFC8879), including library support for Brotli and Zstandard compression. |