openbsd/src/lib/libcrypto/ec, branch libressl-v3.2.3

Add support for additional GOST curves.

2020-06-05T17:12:09+00:00

These GOST curves are defined in RFC 7836 and draft-deremin-rfc4491-bis. Add aliases for 256-bit GOST curves (see draft-smyshlyaev-tls12-gost-suites) and rename the 512-bit curve ids to follow names defined in tc26 OID registry. Diff from Dmitry Baryshkov Sponsored by ROSA Linux. ok inoguchi@

If a NULL or zero cofactor is passed to EC_GROUP_set_generator(),

2019-09-29T10:09:09+00:00

try to compute it using Hasse's bound. This works as long as the cofactor is small enough. Port of Brumley's fix for CVE-2019-1547 in OpenSSL 1.1.1 (old license) tests & ok inoguchi input & ok jsing commit 30c22fa8b1d840036b8e203585738df62a03cec8 Author: Billy Brumley Date: Thu Sep 5 21:25:37 2019 +0300 [crypto/ec] for ECC parameters with NULL or zero cofactor, compute it The cofactor argument to EC_GROUP_set_generator is optional, and SCA mitigations for ECC currently use it. So the library currently falls back to very old SCA-vulnerable code if the cofactor is not present. This PR allows EC_GROUP_set_generator to compute the cofactor for all curves of cryptographic interest. Steering scalar multiplication to more SCA-robust code. This issue affects persisted private keys in explicit parameter form, where the (optional) cofactor field is zero or absent. It also affects curves not built-in to the library, but constructed programatically with explicit parameters, then calling EC_GROUP_set_generator with a nonsensical value (NULL, zero). The very old scalar multiplication code is known to be vulnerable to local uarch attacks, outside of the OpenSSL threat model. New results suggest the code path is also vulnerable to traditional wall clock timing attacks. CVE-2019-1547 Reviewed-by: Matt Caswell Reviewed-by: Tomas Mraz Reviewed-by: Nicola Tuveri (Merged from https://github.com/openssl/openssl/pull/9781)

Plug memory leak in error paths. Found while comparing this file

2019-09-09T20:26:16+00:00

with OpenSSL 1.1.1's version which contains a similar fix. ok jsing

Provide EVP_PKEY_CTX_get_signature_md() macro and implement the

2019-09-09T18:06:26+00:00

EVP_PKEY_CTRL_GET_MD control for DSA, EC and RSA. This is used by the upcoming RSA CMS code. ok inoguchi@ tb@

Move #include to more appropriate location (since it is

2019-09-09T17:56:00+00:00

now being installed).

Add CMS ECC support.

2019-09-08T17:00:05+00:00

This brings in EC code from OpenSSL 1.1.1b, with style(9) and whitespace cleanups. All of this code is currently under OPENSSL_NO_CMS hence is a no-op. ok inoguchi@

Add various macros and controls for EC_PKEY_CTX.

2019-09-06T17:59:25+00:00

These are needed for the upcoming EC CMS support (nothing else appears to use them). This largely syncs our ec_pmeth.c with OpenSSL 1.1.1b. With input from inoguchi@ and tb@. ok inoguchi@ tb@

Initialize EC_KEY_METHOD before use.

2019-05-10T19:15:06+00:00

Fixes COV-186146 ok tb, beck

$OpenBSD$

2019-01-19T01:18:56+00:00

Partial port of EC_KEY_METHOD from OpenSSL 1.1.

2019-01-19T01:17:41+00:00

Pass const method to EC_KEY_METHOD_get_*() to get rid of an XXX. from markus