globa: Change unsigned int to size_t where it is the size of a byte array or an index/offset into it.
diff --git a/ndn-cpp/c/util/crypto.h b/ndn-cpp/c/util/crypto.h
index eb7cec5..5bec549 100644
--- a/ndn-cpp/c/util/crypto.h
+++ b/ndn-cpp/c/util/crypto.h
@@ -21,7 +21,7 @@
* @param dataLength The length of data.
* @param digest A pointer to a buffer of size SHA256_DIGEST_LENGTH to receive the data.
*/
-void ndn_digestSha256(const uint8_t *data, unsigned int dataLength, uint8_t *digest);
+void ndn_digestSha256(const uint8_t *data, size_t dataLength, uint8_t *digest);
#ifdef __cplusplus
}