alick01
73 lines
2.6 KiB
Diff
73 lines
2.6 KiB
Diff
diff -Nur secure_delete-3.1-old/smem.1 secure_delete-3.1/smem.1
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--- secure_delete-3.1-old/smem.1 2011-06-20 16:31:36.890599669 +0300
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+++ secure_delete-3.1/smem.1 2011-06-20 16:37:11.867622820 +0300
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@@ -9,7 +9,7 @@
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sdmem \- secure memory wiper (secure_deletion toolkit)
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.SH SYNOPSIS
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-.B sdmem [-f] [-l] [-l] [-v]
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+.B sdmem [-f] [-l] [-l] [-m] [-v]
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.SH DESCRIPTION
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.I sdmem
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@@ -54,6 +54,9 @@
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-l for a second time lessons the security even more: only one pass with
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0x00 is written.
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.TP
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+.B \-m
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+moderate security. Five passes are written.
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+.TP
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.B \-v
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verbose mode
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.PP
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diff -Nur secure_delete-3.1-old/smem.c secure_delete-3.1/smem.c
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--- secure_delete-3.1-old/smem.c 2011-06-20 16:31:36.889599617 +0300
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+++ secure_delete-3.1/smem.c 2011-06-20 16:32:58.805684329 +0300
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@@ -46,6 +46,7 @@
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printf("Options:\n");
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printf("\t-f fast (and insecure mode): no /dev/urandom.\n");
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printf("\t-l lessens the security (use twice for total insecure mode).\n");
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+ printf("\t-m moderate security (5 writes).\n");
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printf("\t-v is verbose mode.\n");
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printf("\nsmem does a secure overwrite of the memory (RAM), because memory contents can\n");
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printf("be recovered even after a shutdown! Default is secure mode (38 writes).\n");
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@@ -127,7 +128,19 @@
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alarm(600); /* needed to prevent mem caching */
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while ( (ptr = calloc(4096, 16)) != NULL) {
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- if (mode > 0) {
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+ if (mode == 3) {
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+ __sdel_fill_buf(write_modes[0], BLOCKSIZE + 2, buf);
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+ memcpy(ptr, buf, BLOCKSIZE);
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+ __sdel_fill_buf(write_modes[1], BLOCKSIZE + 2, buf);
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+ memcpy(ptr, buf, BLOCKSIZE);
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+ __sdel_random_buf(BLOCKSIZE + 2, buf);
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+ memcpy(ptr, buf, BLOCKSIZE);
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+ __sdel_fill_buf(write_modes[0], BLOCKSIZE + 2, buf);
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+ memcpy(ptr, buf, BLOCKSIZE);
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+ __sdel_fill_buf(write_modes[1], BLOCKSIZE + 2, buf);
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+ memcpy(ptr, buf, BLOCKSIZE);
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+ }
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+ else if (mode > 0) {
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for (turn=0; turn<=36; turn++) {
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if ((mode == 1) && (turn > 0)) break;
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if ((turn>=5) && (turn<=31)) {
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@@ -170,7 +183,7 @@
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help();
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while (1) {
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- result = getopt(argc, argv, "FfLlSsVvZz");
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+ result = getopt(argc, argv, "FfLlmSsVvZz");
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if (result<0) break;
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switch (result) {
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case 'F' :
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@@ -179,6 +192,8 @@
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case 'L' :
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case 'l' : if (secure) secure--;
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break;
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+ case 'm' : secure = 3;
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+ break;
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case 'S' :
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case 's' : secure++;
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break;
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