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David Benjamin 35ac5b7500 Export server-side ticket_age skew. 
We'll measure this value to guide what tolerance to use in the 0-RTT
anti-replay mechanism. This also fixes a bug where we were previously
minting ticket_age_add-less tickets on the server. Add a check to reject
all those tickets.

BUG=113

Change-Id: I68e690c0794234234e0d0500b4b9a7f79aea641e
Reviewed-on: https://boringssl-review.googlesource.com/14068
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
2017-03-08 14:59:01 +00:00
..
runner Export server-side ticket_age skew. 2017-03-08 14:59:01 +00:00
async_bio.cc Work around language and compiler bug in memcpy, etc. 2016-12-21 20:34:47 +00:00
async_bio.h Replace Scoped* heap types with bssl::UniquePtr. 2016-09-01 22:22:54 +00:00
bssl_shim.cc Export server-side ticket_age skew. 2017-03-08 14:59:01 +00:00
CMakeLists.txt
packeted_bio.cc Remove support for blocking DTLS timeout handling. 2017-03-01 19:59:28 +00:00
packeted_bio.h Remove support for blocking DTLS timeout handling. 2017-03-01 19:59:28 +00:00
PORTING.md Document that malloc tests require a longer timeout. 2016-09-30 19:13:05 +00:00
README.md Adding PORTING.md for instructions on how to port the test runner 2016-08-16 17:53:28 +00:00
test_config.cc Export server-side ticket_age skew. 2017-03-08 14:59:01 +00:00
test_config.h Export server-side ticket_age skew. 2017-03-08 14:59:01 +00:00

README.md

BoringSSL SSL Tests

This directory contains BoringSSL's protocol-level test suite.

Testing a TLS implementation can be difficult. We need to produce invalid but sufficiently correct handshakes to get our implementation close to its edge cases. TLS's cryptographic steps mean we cannot use a transcript and effectively need a TLS implementation on the other end. But we do not wish to litter BoringSSL with options for bugs to test against.

Instead, we use a fork of the Go crypto/tls package, heavily patched with configurable bugs. This code, along with a test suite and harness written in Go, lives in the runner directory. The harness runs BoringSSL via a C/C++ shim binary which lives in this directory. All communication with the shim binary occurs with command-line flags, sockets, and standard I/O.

This strategy also ensures we always test against a second implementation. All features should be implemented twice, once in C for BoringSSL and once in Go for testing. If possible, the Go code should be suitable for potentially upstreaming. However, sometimes test code has different needs. For example, our test DTLS code enforces strict ordering on sequence numbers and has controlled packet drop simulation.

To run the tests manually, run go test from the runner directory. It takes command-line flags found at the top of runner/runner.go. The -help option also works after using go test -c to make a runner.test binary first.

If adding a new test, these files may be a good starting point:

  • runner/runner.go: the test harness and all the individual tests.
  • runner/common.go: contains the Config and ProtocolBugs struct which control the Go TLS implementation's behavior.
  • test_config.h, test_config.cc: the command-line flags which control the shim's behavior.
  • bssl_shim.cc: the shim binary itself.

For porting the test suite to a different implementation see PORTING.md.