Do you mean “best support for cryptography in the standard library”?

Because there is tremendous support for cryptography in, say, the C/C++ ecosystem, which has traditionally been the default language of cryptographers.

And since any language can call those C/C++ libraries, all languages are equally good at cryptography! Thanks for the "insight".

Yeah the standard library crypto package is really good and so is the tls package. There's also golang.org/x/crypto which is.seprate because it doesn't fall under the go compatibility guarantee. You can do all kinds of hashes and generate certs and check signatures and do aes encryption all built in and accessible. There's even lower level constant time compare functions and everything.

I'm a big fan of the go standard library + /x/ packages.