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crypto: avoid copying buffers to UTF-8 strings in crypto.hash() #59067

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crypto: avoid copying buffers to UTF-8 strings in crypto.hash() #59067

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25 changes: 11 additions & 14 deletions src/crypto/crypto_hash.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -275,26 +275,23 @@ void Hash::OneShotDigest(const FunctionCallbackInfo<Value>& args) {
}

DataPointer output = ([&]() -> DataPointer {
Utf8Value utf8(isolate, args[3]);
ncrypto::Buffer<const unsigned char> buf;
if (args[3]->IsString()) {
buf = {
Utf8Value utf8(isolate, args[3]);
ncrypto::Buffer<const unsigned char> buf = {
.data = reinterpret_cast<const unsigned char*>(utf8.out()),
.len = utf8.length(),
};
} else {
ArrayBufferViewContents<unsigned char> input(args[3]);
buf = {
.data = reinterpret_cast<const unsigned char*>(input.data()),
.len = input.length(),
};
}

if (is_xof) {
return ncrypto::xofHashDigest(buf, md, output_length);
return is_xof ? ncrypto::xofHashDigest(buf, md, output_length)
: ncrypto::hashDigest(buf, md);
}

return ncrypto::hashDigest(buf, md);
ArrayBufferViewContents<unsigned char> input(args[3]);
ncrypto::Buffer<const unsigned char> buf = {
.data = reinterpret_cast<const unsigned char*>(input.data()),
.len = input.length(),
};
return is_xof ? ncrypto::xofHashDigest(buf, md, output_length)
: ncrypto::hashDigest(buf, md);
})();

if (!output) [[unlikely]] {
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