secure-delete New Package

2022-10-21 22:16:01 +03:00
parent 5a93b63cc8
commit 03a30fef26
9 changed files with 366 additions and 0 deletions
@@ -0,0 +1,72 @@
+diff -Nur secure_delete-3.1-old/smem.1 secure_delete-3.1/smem.1
+--- secure_delete-3.1-old/smem.1	2011-06-20 16:31:36.890599669 +0300
+++ secure_delete-3.1/smem.1	2011-06-20 16:37:11.867622820 +0300
+@@ -9,7 +9,7 @@
+ sdmem \- secure memory wiper (secure_deletion toolkit)
+ 
+ .SH SYNOPSIS
+-.B sdmem [-f] [-l] [-l] [-v]
+.B sdmem [-f] [-l] [-l] [-m] [-v]
+ 
+ .SH DESCRIPTION
+ .I sdmem
+@@ -54,6 +54,9 @@
+ -l for a second time lessons the security even more: only one pass with
+ 0x00 is written.
+ .TP
+.B \-m
+moderate security. Five passes are written.
+.TP
+ .B \-v
+ verbose mode
+ .PP
+diff -Nur secure_delete-3.1-old/smem.c secure_delete-3.1/smem.c
+--- secure_delete-3.1-old/smem.c	2011-06-20 16:31:36.889599617 +0300
+++ secure_delete-3.1/smem.c	2011-06-20 16:32:58.805684329 +0300
+@@ -46,6 +46,7 @@
+     printf("Options:\n");
+     printf("\t-f  fast (and insecure mode): no /dev/urandom.\n");
+     printf("\t-l  lessens the security (use twice for total insecure mode).\n");
+    printf("\t-m  moderate security (5 writes).\n");
+     printf("\t-v  is verbose mode.\n");
+     printf("\nsmem does a secure overwrite of the memory (RAM), because memory contents can\n");
+     printf("be recovered even after a shutdown! Default is secure mode (38 writes).\n");
+@@ -127,7 +128,19 @@
+     alarm(600); /* needed to prevent mem caching */
+ 
+     while ( (ptr = calloc(4096, 16)) != NULL) {
+-        if (mode > 0) {
+        if (mode == 3) {
+            __sdel_fill_buf(write_modes[0], BLOCKSIZE + 2, buf);
+            memcpy(ptr, buf, BLOCKSIZE);
+            __sdel_fill_buf(write_modes[1], BLOCKSIZE + 2, buf);
+            memcpy(ptr, buf, BLOCKSIZE);
+            __sdel_random_buf(BLOCKSIZE + 2, buf);
+            memcpy(ptr, buf, BLOCKSIZE);
+            __sdel_fill_buf(write_modes[0], BLOCKSIZE + 2, buf);
+            memcpy(ptr, buf, BLOCKSIZE);
+            __sdel_fill_buf(write_modes[1], BLOCKSIZE + 2, buf);
+            memcpy(ptr, buf, BLOCKSIZE);
+        }
+        else if (mode > 0) {
+             for (turn=0; turn<=36; turn++) {
+                 if ((mode == 1) && (turn > 0)) break;
+                 if ((turn>=5) && (turn<=31)) {
+@@ -170,7 +183,7 @@
+             help();
+ 
+     while (1) {
+-        result = getopt(argc, argv, "FfLlSsVvZz");
+        result = getopt(argc, argv, "FfLlmSsVvZz");
+         if (result<0) break;
+         switch (result) {
+             case 'F' :
+@@ -179,6 +192,8 @@
+             case 'L' :
+             case 'l' : if (secure) secure--;
+             	       break;
+            case 'm' : secure = 3;
+            	       break;
+             case 'S' :
+             case 's' : secure++;
+                        break;