diff --git a/Tools/pauth_tool/Makefile b/Tools/pauth_tool/Makefile
new file mode 100644
index 0000000000..cc8b5e3107
--- /dev/null
+++ b/Tools/pauth_tool/Makefile
@@ -0,0 +1,16 @@
+
+TARGET = pauth
+OBJS = main.o pauth.o
+
+CFLAGS = -O2 -G0 -Wall -I.
+LDFLAGS = -mno-crt0 -nostartfiles -L.
+LIBS +=
+
+BUILD_PRX = 1
+
+EXTRA_TARGETS = EBOOT.PBP
+PSP_EBOOT_TITLE = pauth file decrypter
+
+PSPSDK = $(shell psp-config --pspsdk-path)
+include $(PSPSDK)/lib/build.mak
+
diff --git a/Tools/pauth_tool/PSP/GAME/pauth_tool/EBOOT.PBP b/Tools/pauth_tool/PSP/GAME/pauth_tool/EBOOT.PBP
new file mode 100644
index 0000000000..84e83230e0
Binary files /dev/null and b/Tools/pauth_tool/PSP/GAME/pauth_tool/EBOOT.PBP differ
diff --git a/Tools/pauth_tool/main.c b/Tools/pauth_tool/main.c
new file mode 100644
index 0000000000..088c6cbd2f
--- /dev/null
+++ b/Tools/pauth_tool/main.c
@@ -0,0 +1,141 @@
+
+#include <pspsdk.h>
+#include <pspkernel.h>
+#include <pspiofilemgr.h>
+#include <pspctrl.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+
+
+PSP_MODULE_INFO("Dump_file", 0, 1, 1);
+PSP_MAIN_THREAD_ATTR(PSP_THREAD_ATTR_USER);
+
+#define printf pspDebugScreenPrintf
+
+/**************************************************************/
+
+void process_pauth(char *name)
+{
+	char tname[64], *p;
+	u8 pauth_key[16], *pbuf;
+	int fd, size, dsize, retv;
+
+	printf("%s\n", name);
+
+	/* Read key */
+	sprintf(tname, "ms0:/PAUTH/%s", name);
+	p = strrchr(tname, '.');
+	strcpy(p, ".key");
+	fd = sceIoOpen(tname, PSP_O_RDONLY, 0666);
+	if(fd<0){
+		printf("%s: open failed!\n", tname);
+		return;
+	}
+	sceIoRead(fd, pauth_key, 16);
+	sceIoClose(fd);
+
+	/* read pauth data */
+	sprintf(tname, "ms0:/PAUTH/%s", name);
+	pbuf = (u8*)0x09000000;
+	fd = sceIoOpen(tname, PSP_O_RDONLY, 0666);
+	if(fd<0){
+		printf("%s: open failed!\n", tname);
+		return;
+	}
+	size = sceIoLseek32(fd, 0, SEEK_END);
+	sceIoLseek32(fd, 0, SEEK_SET);
+	sceIoRead(fd, pbuf, size);
+	sceIoClose(fd);
+
+	/* decrypt it */
+	retv = scePauth_98B83B5D(pbuf, size, &dsize, pauth_key);
+	if(retv<0){
+		printf("scePauth_98B83B5D: %08x\n", retv);
+		return;
+	}
+
+	/* save */
+	sprintf(tname, "ms0:/PAUTH/%s.decrypt", name);
+	fd = sceIoOpen(tname, PSP_O_WRONLY | PSP_O_CREAT | PSP_O_TRUNC, 0777);
+	if(fd<0){
+		printf("%s: open failed! %08x\n", tname, fd);
+		return;
+	}
+	sceIoWrite(fd, pbuf, dsize);
+	sceIoClose(fd);
+
+	printf("  %s decrypt, size %08x\n", name, dsize);
+
+}
+
+int main_thread(SceSize args, void *argp)
+{
+	SceCtrlData pad;
+	SceIoDirent dir;
+	char *p;
+	int dfd, retv;
+
+	pspDebugScreenInit();
+
+	dfd = sceIoDopen("ms0:/PAUTH");
+	if(dfd<=0){
+		printf("sceIoDopen failed! %08x\n", dfd);
+		return dfd;
+	}
+
+	memset(&dir, 0, sizeof(dir));
+	while(1){
+		retv = sceIoDread(dfd, &dir);
+		if(retv<0){
+			printf("sceIoDread dfd=%d %08x\n", dfd, retv);
+			break;
+		}
+		if(retv==0)
+			break;
+		if(FIO_SO_ISREG(dir.d_stat.st_attr)) {
+			if(strncmp(dir.d_name, "pauth_", 6)==0){
+				p = strrchr(dir.d_name, '.');
+				if(p && strcmp(p, ".bin")==0){
+					process_pauth(dir.d_name);
+				}
+			}
+		}
+	}
+
+	sceIoDclose(dfd);
+
+	printf("Process finished. Press O to exit.\n");
+	while(1){
+		sceCtrlReadBufferPositive(&pad, 1);
+		if(pad.Buttons&PSP_CTRL_CIRCLE)
+			break;
+		sceKernelDelayThread(12000);
+	}
+
+	sceKernelExitGame();
+	return 0;
+}
+
+/**************************************************************/
+
+int module_start(SceSize args, void* argp)
+{
+	int thid;
+
+	thid = sceKernelCreateThread("main_thread", main_thread, 0x1A, 0x10000, 0, NULL);
+	if(thid>=0) {
+		sceKernelStartThread(thid, args, argp);
+	}
+
+	return 0;
+}
+
+int module_stop(SceSize args, void *argp)
+{
+	return 0;
+}
+
+/**************************************************************/
+
diff --git a/Tools/pauth_tool/pauth.S b/Tools/pauth_tool/pauth.S
new file mode 100644
index 0000000000..7d211c6bfd
--- /dev/null
+++ b/Tools/pauth_tool/pauth.S
@@ -0,0 +1,7 @@
+    .set noreorder
+
+#include "pspimport.s"
+
+    IMPORT_START "scePauth", 0x40010011
+    IMPORT_FUNC  "scePauth", 0x98B83B5D, scePauth_98B83B5D
+
diff --git a/Tools/pauth_tool/readme.txt b/Tools/pauth_tool/readme.txt
new file mode 100644
index 0000000000..500de284d6
--- /dev/null
+++ b/Tools/pauth_tool/readme.txt
@@ -0,0 +1,3 @@
+Made by tpunix
+Only decrypt MH3P
+Don't work with scePauth_F7AA47F6
\ No newline at end of file