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Third Party Openssl

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Third Party Openssl
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  1. 31 7月, 2018 2 次提交
  3. 30 7月, 2018 3 次提交
  5. 29 7月, 2018 1 次提交
  7. 27 7月, 2018 3 次提交
    • B
      Improve backwards compat for SSL_get_servername() · a75be9fd
      由 Benjamin Kaduk 提交于 
      Commit 1c4aa31d changed how we process
and store SNI information during the handshake, so that a hostname is
only saved in the SSL_SESSION structure if that SNI value has actually
been negotiated.  SSL_get_servername() was adjusted to match, with a new
conditional being added to handle the case when the handshake processing
is ongoing, and a different location should be consulted for the offered
SNI value.  This was done in an attempt to preserve the historical
behavior of SSL_get_servername(), a function whose behavior only mostly
matches its documentation, and whose documentation is both lacking and
does not necessarily reflect the actual desired behavior for such an
API.  Unfortunately, sweeping changes that would bring more sanity to
this space are not possible until OpenSSL 1.2.0, for ABI compatibility
reasons, so we must attempt to maintain the existing behavior to the
extent possible.

The above-mentioned commit did not take into account the behavior
of SSL_get_servername() during resumption handshakes for TLS 1.2 and
prior, where no SNI negotiation is performed.  In that case we would
not properly parse the incoming SNI and erroneously return NULL as
the servername, when instead the logical session is associated with
the SNI value cached in the SSL_SESSION.  (Note that in some cases an
SNI callback may not need to do anything in a TLS 1.2 or prior resumption
flow, but we are calling the callbacks and did not provide any guidance
that they should no-op if the connection is being resumed, so we must
handle this case in a usable fashion.)  Update our behavior accordingly to
return the session's cached value during the handshake, when resuming.
This fixes the boringssl tests.

[extended tests]
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6792)
      a75be9fd
    • B
      Fix ossl_shim SNI handling · 45a23530
      由 Benjamin Kaduk 提交于 
      To start with, actually set an SNI callback (copied from bssl_shim); we
weren't actually testing much otherwise (and just happened to have been
passing due to buggy libssl behavior prior to
commit 1c4aa31d).

Also use proper C++ code for handling C strings -- when a C API
(SSL_get_servername()) returns NULL instead of a string, special-case
that instead of blindly trying to compare NULL against a std::string,
and perform the comparsion using the std::string operators instead of
falling back to pointer comparison.
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6792)
      45a23530
    • B
      EC GFp ladder · 9d91530d
      由 Billy Brumley 提交于 
      This commit leverages the Montgomery ladder scaffold introduced in #6690
(alongside a specialized Lopez-Dahab ladder for binary curves) to
provide a specialized differential addition-and-double implementation to
speedup prime curves, while keeping all the features of
`ec_scalar_mul_ladder` against SCA attacks.

The arithmetic in ladder_pre, ladder_step and ladder_post is auto
generated with tooling, from the following formulae:

- `ladder_pre`: Formula 3 for doubling from Izu-Takagi "A fast parallel
  elliptic curve multiplication resistant against side channel attacks",
  as described at
  https://hyperelliptic.org/EFD/g1p/auto-shortw-xz.html#doubling-dbl-2002-it-2
- `ladder_step`: differential addition-and-doubling Eq. (8) and (10)
  from Izu-Takagi "A fast parallel elliptic curve multiplication
  resistant against side channel attacks", as described at
  https://hyperelliptic.org/EFD/g1p/auto-shortw-xz.html#ladder-ladd-2002-it-3
- `ladder_post`: y-coordinate recovery using Eq. (8) from Brier-Joye
  "Weierstrass Elliptic Curves and Side-Channel Attacks", modified to
  work in projective coordinates.
Co-authored-by: NNicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: NAndy Polyakov <appro@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6772)
      9d91530d
  9. 26 7月, 2018 10 次提交
  11. 25 7月, 2018 10 次提交
  13. 24 7月, 2018 6 次提交
  15. 23 7月, 2018 1 次提交
  17. 22 7月, 2018 4 次提交