1 files changed, 31 insertions, 0 deletions
diff --git a/C/7zCrc.h b/C/7zCrc.h
new file mode 100755
index 00000000..370b2a0f
--- /dev/null
+++ b/C/7zCrc.h
@@ -0,0 +1,31 @@
+/* 7zCrc.h */
+
+#ifndef __7Z_CRC_H
+#define __7Z_CRC_H
+
+#include <stddef.h>
+
+#include "Types.h"
+
+extern UInt32 g_CrcTable[256];
+
+// #define CRC_GENERATE_TABLE
+
+#ifdef CRC_GENERATE_TABLE
+void CrcGenerateTable();
+#else
+#define CrcGenerateTable()
+#endif
+
+void CrcInit(UInt32 *crc);
+UInt32 CrcGetDigest(UInt32 *crc);
+void CrcUpdateByte(UInt32 *crc, Byte v);
+void CrcUpdateUInt16(UInt32 *crc, UInt16 v);
+void CrcUpdateUInt32(UInt32 *crc, UInt32 v);
+void CrcUpdateUInt64(UInt32 *crc, UInt64 v);
+void CrcUpdate(UInt32 *crc, const void *data, size_t size);
+ 
+UInt32 CrcCalculateDigest(const void *data, size_t size);
+int CrcVerifyDigest(UInt32 digest, const void *data, size_t size);
+
+#endif