Metadata stamp.

1 files changed, 7 insertions, 5 deletions

diff --git a/libdevcore/SwarmHash.cpp b/libdevcore/SwarmHash.cpp
index e7b844eb..aa98eafd 100644
--- a/libdevcore/SwarmHash.cpp
+++ b/libdevcore/SwarmHash.cpp
@@ -38,13 +38,14 @@ h256 swarmHashSimple(bytesConstRef _data, size_t _size)
 	return keccak256(toLittleEndian(_size) + _data.toBytes());
 }
 
-h256 swarmHashIntermediate(bytes const& _input, size_t _offset, size_t _length)
+h256 swarmHashIntermediate(string const& _input, size_t _offset, size_t _length)
 {
+	bytesConstRef ref;
+	bytes innerNodes;
 	if (_length <= 0x1000)
-		return swarmHashSimple(bytesConstRef(_input.data() + _offset, _length), _length);
+		ref = bytesConstRef(_input).cropped(_offset, _length);
 	else
 	{
-		bytes innerNodes;
 		size_t maxRepresentedSize = 0x1000;
 		while (maxRepresentedSize * (0x1000 / 32) < _length)
 			maxRepresentedSize *= (0x1000 / 32);
@@ -53,11 +54,12 @@ h256 swarmHashIntermediate(bytes const& _input, size_t _offset, size_t _length)
 			size_t size = std::min(maxRepresentedSize, _length - i);
 			innerNodes += swarmHashIntermediate(_input, _offset + i, size).asBytes();
 		}
-		return swarmHashSimple(bytesConstRef(&innerNodes), _length);
+		ref = bytesConstRef(&innerNodes);
 	}
+	return swarmHashSimple(ref, _length);
 }
 
-h256 dev::swarmHash(bytes const& _input)
+h256 dev::swarmHash(string const& _input)
 {
 	return swarmHashIntermediate(_input, 0, _input.size());
 }