crypto: runtime-deprecate calling hmac.digest() multiple times

Author: algojogacor

lib/internal/crypto/hash.js

@@ -87,6 +87,13 @@ const maybeEmitDeprecationWarning = getDeprecationWarningEmitter(
   },
 );
 
+const maybeEmitHMACMultipleDigestDeprecationWarning =
+  getDeprecationWarningEmitter(
+    'DEP0208',
+    'Calling hmac.digest() multiple times without re-initialization is ' +
+    'deprecated and will throw an error in a future version.',
+  );
+
 function Hash(algorithm, options) {
   if (!new.target)
     return new Hash(algorithm, options);
@@ -186,6 +193,7 @@ Hmac.prototype.digest = function digest(outputEncoding) {
   const state = this[kState];
 
   if (state[kFinalized]) {
+    maybeEmitHMACMultipleDigestDeprecationWarning();
     const buf = Buffer.from('');
     if (outputEncoding && outputEncoding !== 'buffer')
       return buf.toString(outputEncoding);