Function toBuf

lib/internal/crypto/util.js:104–111

(val, encoding)

// any explicit encoding in older versions of node, and we don't want
// to break them unnecessarily.
function toBuf(val, encoding) {
  if (typeof val === 'string') {
    if (encoding === 'buffer')
      encoding = 'utf8';
    return Buffer.from(val, encoding);
  }
  return val;
}

let _hashCache;
function getHashCache() {