diff --git a/adbbu/Android.mk b/adbbu/Android.mk
index 10faf6f..33d3ad7 100644
--- a/adbbu/Android.mk
+++ b/adbbu/Android.mk
@@ -2,10 +2,9 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-	twrpback.cpp \
-	../twrpDigest.cpp \
-	../digest/md5.c
-LOCAL_SHARED_LIBRARIES += libstdc++ libz libselinux
+	twrpback.cpp
+
+LOCAL_SHARED_LIBRARIES += libstdc++ libz libtwrpdigest
 ifeq ($(shell test $(PLATFORM_SDK_VERSION) -lt 23; echo $$?),0)
     LOCAL_C_INCLUDES += external/stlport/stlport
     LOCAL_SHARED_LIBRARIES += libstlport
diff --git a/adbbu/twrpback.cpp b/adbbu/twrpback.cpp
index 1c98a1b..8652de2 100644
--- a/adbbu/twrpback.cpp
+++ b/adbbu/twrpback.cpp
@@ -34,9 +34,8 @@
 
 #include "twadbstream.h"
 #include "twrpback.hpp"
-#include "../variables.h"
-#include "../twcommon.h"
-#include "../twrpDigest.hpp"
+#include "../twrpDigest/twrpDigest.hpp"
+#include "../twrpDigest/twrpMD5.hpp"
 
 twrpback::twrpback(void) {
 	read_fd = 0;
@@ -94,7 +93,7 @@
 }
 
 int twrpback::backup(std::string command) {
-	twrpDigest adb_md5;
+	twrpMD5 digest;
 	bool breakloop = false;
 	int bytes = 0, errctr = 0;
 	char result[MAX_ADB_READ];
@@ -215,8 +214,7 @@
 				struct twfilehdr twimghdr;
 
 				adblogwrite("Writing TWIMG\n");
-				adb_md5.initMD5();
-
+				digest.init();
 				memset(&twimghdr, 0, sizeof(twimghdr));
 				memcpy(&twimghdr, cmd, sizeof(cmd));
 				md5fnsize = twimghdr.size;
@@ -234,7 +232,7 @@
 				struct twfilehdr twfilehdr;
 
 				adblogwrite("Writing TWFN\n");
-				adb_md5.initMD5();
+				digest.init();
 
 				ADBSTRUCT_STATIC_ASSERT(sizeof(twfilehdr) == MAX_ADB_READ);
 
@@ -269,8 +267,7 @@
 					totalbytes += bytes;
 					char *writeresult = new char [bytes];
 					memcpy(writeresult, result, bytes);
-					if (adb_md5.updateMD5stream((unsigned char *) writeresult, bytes) == -1)
-						adblogwrite("failed to update md5 stream\n");
+					digest.update((unsigned char *) writeresult, bytes);
 					if (fwrite(writeresult, 1, bytes, adbd_fp) != bytes) {
 						adblogwrite("Error writing backup data to adbd\n");
 						close_backup_fds();
@@ -290,8 +287,7 @@
 						close_backup_fds();
 						return -1;
 					}
-					if (adb_md5.updateMD5stream((unsigned char *) padding, sizeof(padding)) == -1)
-						adblogwrite("failed to update md5 stream\n");
+					digest.update((unsigned char *) padding, sizeof(padding));
 					fflush(adbd_fp);
 					totalbytes = 0;
 				}
@@ -299,9 +295,8 @@
 				AdbBackupFileTrailer md5trailer;
 
 				memset(&md5trailer, 0, sizeof(md5trailer));
-				adb_md5.finalizeMD5stream();
 
-				std::string md5string = adb_md5.createMD5string();
+				std::string md5string = digest.return_digest_string();
 
 				strncpy(md5trailer.start_of_trailer, TWRP, sizeof(md5trailer.start_of_trailer));
 				strncpy(md5trailer.type, MD5TRAILER, sizeof(md5trailer.type));
@@ -350,8 +345,7 @@
 				char *writeresult = new char [bytes];
 				memcpy(writeresult, result, bytes);
 
-				if (adb_md5.updateMD5stream((unsigned char *) writeresult, bytes) == -1)
-					adblogwrite("failed to update md5 stream\n");
+				digest.update((unsigned char *) writeresult, bytes);
 
 				totalbytes += bytes;
 				dataChunkBytes += bytes;
@@ -399,7 +393,8 @@
 }
 
 int twrpback::restore(void) {
-	twrpDigest adb_md5;
+	twrpMD5 digest;
+	char cmd[MAX_ADB_READ];
 	char result[MAX_ADB_READ];
 	struct AdbBackupControlType structcmd;
 	int adb_control_twrp_fd, errctr = 0;
@@ -591,8 +586,8 @@
 					struct twfilehdr twimghdr;
 					uint32_t crc, twimghdrcrc;
 
+					digest.init();
 					totalbytes -= sizeof(result);
-					adb_md5.initMD5();
 					adblogwrite("Restoring TWIMG\n");
 					memset(&twimghdr, 0, sizeof(twimghdr));
 					memcpy(&twimghdr, result, sizeof(result));
@@ -623,9 +618,9 @@
 				else if (cmdtype == TWFN) {
 					struct twfilehdr twfilehdr;
 					uint32_t crc, twfilehdrcrc;
+					digest.init();
 
 					totalbytes -= sizeof(result);
-					adb_md5.initMD5();
 					adblogwrite("Restoring TWFN\n");
 					memset(&twfilehdr, 0, sizeof(twfilehdr));
 					memcpy(&twfilehdr, result, sizeof(result));
@@ -703,15 +698,13 @@
 									close_restore_fds();
 									return -1;
 								}
-								adblogwrite("md5 finalize stream\n");
-								adb_md5.finalizeMD5stream();
 
 								AdbBackupFileTrailer md5;
 
 								memset(&md5, 0, sizeof(md5));
 								strncpy(md5.start_of_trailer, TWRP, sizeof(md5.start_of_trailer));
 								strncpy(md5.type, TWMD5, sizeof(md5.type));
-								std::string md5string = adb_md5.createMD5string();
+								std::string md5string = digest.return_digest_string();
 								strncpy(md5.md5, md5string.c_str(), sizeof(md5.md5));
 
 								adblogwrite("Sending MD5Check\n");
@@ -726,8 +719,7 @@
 								break;
 							}
 						}
-						if (adb_md5.updateMD5stream((unsigned char*)result, sizeof(result)) == -1)
-							adblogwrite("failed to update md5 stream\n");
+						digest.update((unsigned char*)result, sizeof(result));
 						dataChunkBytes += readbytes;
 
 						if (write(adb_write_fd, result, sizeof(result)) < 0) {