The crypto module aims to provide a comprehensive suite of cryptographic utilities. It is influnced by crypto APIs commonly used on the web, in addition to the crypto package in the Go standard library.
The SubtleCrypto interface of the Web Crypto API provides a number of low-level cryptographic functions. Access to the features of SubtleCrypto is obtained through the subtle property of the Crypto object you get from
Window.crypto.
Source: https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto