#include <CommonCrypto/CommonDigest.h>
#elif defined(SHA1_OPENSSL)
#include <openssl/sha.h>
+#elif defined(SHA1_DC)
+#ifdef DC_SHA1_SUBMODULE
+#include "sha1collisiondetection/lib/sha1.h"
+#else
+#include "sha1dc/sha1.h"
+#endif
#else /* SHA1_BLK */
#include "block-sha1/sha1.h"
#endif