Go does have first class support for this in the standard library, e.g. https://pkg.go.dev/crypto/subtle https://pkg.go.dev/crypto/subtle. It's not at all weir

Go does have first class support for this in the standard library, e.g. https://pkg.go.dev/crypto/subtle https://pkg.go.dev/crypto/subtle. It's not at all weird that the language authors needed assembly to implement such a thing. They figured out the tricky bits so you don't have to.