4 files changed, 15 insertions, 11 deletions

diff --git a/src/frame_info.h b/src/frame_info.h
index 325350c4..ea57885c 100644
--- a/src/frame_info.h
+++ b/src/frame_info.h
@@ -42,6 +42,7 @@ LIBDCP_DISABLE_WARNINGS
 LIBDCP_ENABLE_WARNINGS
 #include <stdint.h>
 #include <string>
+#include <vector>
 
 
 namespace dcp {
@@ -54,15 +55,15 @@ struct FrameInfo
 {
 	FrameInfo () = default;
 
-	FrameInfo(uint64_t o, uint64_t s, std::string h)
+	FrameInfo(uint64_t o, uint64_t s, std::vector<uint8_t> h)
 		: offset(o)
 		, size(s)
-		, hash(h)
+		, hash(std::move(h))
 	{}
 
 	uint64_t offset = 0;
 	uint64_t size = 0;
-	std::string hash;
+	std::vector<uint8_t> hash;
 };
 
 
@@ -70,7 +71,7 @@ struct J2KFrameInfo : public FrameInfo
 {
 	J2KFrameInfo() = default;
 
-	J2KFrameInfo(uint64_t offset_, uint64_t size_, std::string hash_)
+	J2KFrameInfo(uint64_t offset_, uint64_t size_, std::vector<uint8_t> hash_)
 		: FrameInfo(offset_, size_, hash_)
 	{}
 };
@@ -83,7 +84,7 @@ struct MPEG2FrameInfo : public FrameInfo
 	MPEG2FrameInfo(
 		uint64_t offset_,
 		uint64_t size_,
-		std::string hash_,
+		std::vector<uint8_t> hash_,
 		ASDCP::MPEG2::FrameType_t type_,
 		bool gop_start_,
 		bool closed_gop_,
diff --git a/src/mono_j2k_picture_asset_writer.cc b/src/mono_j2k_picture_asset_writer.cc
index 644cfd3a..394040ac 100644
--- a/src/mono_j2k_picture_asset_writer.cc
+++ b/src/mono_j2k_picture_asset_writer.cc
@@ -52,8 +52,9 @@ LIBDCP_ENABLE_WARNINGS
 #include "j2k_picture_asset_writer_common.cc"
 
 
-using std::string;
 using std::shared_ptr;
+using std::string;
+using std::vector;
 using namespace dcp;
 
 
@@ -110,7 +111,7 @@ MonoJ2KPictureAssetWriter::write (uint8_t const * data, int size)
 
 	uint64_t const before_offset = _state->mxf_writer.Tell ();
 
-	string hash;
+	vector<uint8_t> hash;
 	auto const r = _state->mxf_writer.WriteFrame (_state->frame_buffer, _crypto_context->context(), _crypto_context->hmac(), &hash);
 	if (ASDCP_FAILURE(r)) {
 		throw_from_asdcplib(r, _file, MXFFileError("error in writing video MXF", _file.string(), r));
diff --git a/src/mono_mpeg2_picture_asset_writer.cc b/src/mono_mpeg2_picture_asset_writer.cc
index a8e05ce9..5b841c4d 100644
--- a/src/mono_mpeg2_picture_asset_writer.cc
+++ b/src/mono_mpeg2_picture_asset_writer.cc
@@ -38,6 +38,7 @@
 
 
 using std::string;
+using std::vector;
 using namespace dcp;
 
 
@@ -92,7 +93,7 @@ MonoMPEG2PictureAssetWriter::write(uint8_t const * data, int size)
 
 	auto const before_offset = _state->mxf_writer.Tell();
 
-	string hash;
+	vector<uint8_t> hash;
 	auto const r = _state->mxf_writer.WriteFrame(buffer, _crypto_context->context(), _crypto_context->hmac(), &hash);
 	if (ASDCP_FAILURE(r)) {
 		throw_from_asdcplib(r, _file, MXFFileError("error in writing video MXF", _file.string(), r));
diff --git a/src/stereo_j2k_picture_asset_writer.cc b/src/stereo_j2k_picture_asset_writer.cc
index 02ccdca1..6874bf7c 100644
--- a/src/stereo_j2k_picture_asset_writer.cc
+++ b/src/stereo_j2k_picture_asset_writer.cc
@@ -49,8 +49,9 @@
 #include "j2k_picture_asset_writer_common.cc"
 
 
-using std::string;
 using std::shared_ptr;
+using std::string;
+using std::vector;
 using namespace dcp;
 
 
@@ -104,7 +105,7 @@ StereoJ2KPictureAssetWriter::write (uint8_t const * data, int size)
 
 	uint64_t const before_offset = _state->mxf_writer.Tell ();
 
-	string hash;
+	vector<uint8_t> hash;
 	auto r = _state->mxf_writer.WriteFrame (
 		_state->frame_buffer,
 		_next_eye == Eye::LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT,
@@ -123,7 +124,7 @@ StereoJ2KPictureAssetWriter::write (uint8_t const * data, int size)
 		++_frames_written;
 	}
 
-	return J2KFrameInfo(before_offset, _state->mxf_writer.Tell() - before_offset, hash);
+	return J2KFrameInfo(before_offset, _state->mxf_writer.Tell() - before_offset, std::move(hash));
 }