This is a fork of Go with:

* crypto/x509 supporting GOST 34.10-2012
  X.509 certificates and PKCS#8 private keys
* crypto/tls supporting GOST TLS 1.3

GOST-related crypto/tls.SignatureSchemes are not enabled by default,
simply because it will fail native unittests. crypto/tls also does not
provide ability to control TLS 1.3 CipherSuite choice and GOST-related
suites are not enabled by default too. You can use tls.GOSTInstall() for
enabling all of that.

Pay attention that:

* GOST X.509 certificates uses reversed digest (relatively to native
  gogost/gost3410 output) during signing, so you should use
  gogost/gost3410.PrivateKeyReverseDigest crypto.Signer
* GOST TLS 1.3 uses both reversed digest and signature values, so you
  should use gogost/gost3410.PrivateKeyReverseDigestAndSignature in that case
* GoGOST is quite slow, do not expect high performance

Look at src/crypto/x509/x509_test.go and src/crypto/tls/gost_test.go
for example usage.

./gogost-install script helps installing GoGOST directly into Go's
source code tree. Then build Go with ordinary steps. Some unittests,
related to dependency checks, will fail as expected.