fixup! crypto: implement crypto.digest()

Author: joyeecheung

benchmark/crypto/node-digest.js

@@ -27,7 +27,7 @@ function main({ length, type, method, n }) {
   }
 
   const hash = digest ?
-    (method, input) => digest(method, input, { outputEncoding: 'hex' }) :
+    (method, input) => digest(method, input, 'hex') :
     (method, input) => createHash(method).update(input).digest('hex');
   const array = [];
   for (let i = 0; i < n; i++) {

lib/internal/crypto/hash.js

@@ -192,24 +192,18 @@ async function asyncDigest(algorithm, data) {
   throw lazyDOMException('Unrecognized algorithm name', 'NotSupportedError');
 }
 
-function digest(algorithm, input, options) {
+function digest(algorithm, input, outputEncoding = 'hex') {
   validateString(algorithm, 'algorithm');
   if (typeof input !== 'string') {
     validateBuffer(input, 'input');
   }
-  let inputEncoding = 'utf8';
-  let outputEncoding = 'buffer';
-  if (typeof options === 'object') {
-    if (typeof options.inputEncoding === 'string') {
-      inputEncoding = normalizeEncoding(options.inputEncoding) || inputEncoding;
-    }
-    if (typeof options.outputEncoding === 'string') {
-      outputEncoding = normalizeEncoding(options.outputEncoding) || outputEncoding;
-    }
+  // Fast case: if it's 'hex', we don't need to validate it further.
+  if (outputEncoding !== 'hex') {
+    validateString(outputEncoding);
+    outputEncoding = normalizeEncoding(outputEncoding) || outputEncoding;
   }
   return oneShotDigest(algorithm, getCachedHashId(algorithm), getHashCache(),
-                       input, inputEncoding, encodingsMap[inputEncoding],
-                       outputEncoding, encodingsMap[outputEncoding]);
+                       input, outputEncoding, encodingsMap[outputEncoding]);
 }
 
 module.exports = {

src/crypto/crypto_hash.cc

@@ -204,20 +204,17 @@ const EVP_MD* GetDigestImplementation(Environment* env,
 }
 
 // crypto.digest(algorithm, algorithmId, algorithmCache,
-//               input, inputEncoding, inputEncodingId,
-//               outputEncoding, outputEncodingId)
+//               input, outputEncoding, outputEncodingId)
 void Hash::OneShotDigest(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
   Isolate* isolate = env->isolate();
-  CHECK_EQ(args.Length(), 8);
+  CHECK_EQ(args.Length(), 6);
   CHECK(args[0]->IsString());                                  // algorithm
   CHECK(args[1]->IsInt32());                                   // algorithmId
   CHECK(args[2]->IsObject());                                  // algorithmCache
   CHECK(args[3]->IsString() || args[3]->IsArrayBufferView());  // input
-  CHECK(args[4]->IsString());                                  // inputEncoding
-  CHECK(args[5]->IsUint32() || args[5]->IsUndefined());  // inputEncodingId
-  CHECK(args[6]->IsString());                            // outputEncoding
-  CHECK(args[7]->IsUint32() || args[7]->IsUndefined());  // outputEncodingId
+  CHECK(args[4]->IsString());                                  // outputEncoding
+  CHECK(args[5]->IsUint32() || args[5]->IsUndefined());  // outputEncodingId
 
   const EVP_MD* md = GetDigestImplementation(env, args[0], args[1], args[2]);
   if (md == nullptr) {
@@ -227,8 +224,7 @@ void Hash::OneShotDigest(const FunctionCallbackInfo<Value>& args) {
     return ThrowCryptoError(env, ERR_get_error(), message.c_str());
   }
 
-  enum encoding input_enc = ParseEncoding(isolate, args[4], args[5], UTF8);
-  enum encoding output_enc = ParseEncoding(isolate, args[6], args[7], BUFFER);
+  enum encoding output_enc = ParseEncoding(isolate, args[4], args[5], HEX);
 
   int md_len = EVP_MD_size(md);
   unsigned int result_size;
@@ -241,15 +237,9 @@ void Hash::OneShotDigest(const FunctionCallbackInfo<Value>& args) {
   // in the future.
   // https://github.com/openssl/openssl/issues/19612
   if (args[3]->IsString()) {
-    StringBytes::InlineDecoder decoder;
-    // Input is a string so it must be decodable.
-    decoder.Decode(env, args[3].As<String>(), input_enc).Check();
-    if (UNLIKELY(decoder.size() > INT_MAX)) {
-      return THROW_ERR_OUT_OF_RANGE(env, "data is too long");
-    }
-
-    success = EVP_Digest(decoder.out(),
-                         decoder.size(),
+    Utf8Value utf8(isolate, args[3]);
+    success = EVP_Digest(utf8.out(),
+                         utf8.length(),
                          output.data<unsigned char>(),
                          &result_size,
                          md,