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* secmem.c (secmem_free, secmem_term): Use wipememory2() instead of

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memset() to overwrite secure memory.
This commit is contained in:
David Shaw 2002-11-06 15:43:38 +00:00
parent 49db742b75
commit 23ac2c1e0a
2 changed files with 13 additions and 8 deletions
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5
util/ChangeLog
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@ -1,3 +1,8 @@
2002-11-06 David Shaw <dshaw@jabberwocky.com>
* secmem.c (secmem_free, secmem_term): Use wipememory2() instead
of memset() to overwrite secure memory.
2002-10-28 Werner Koch <wk@gnupg.org> 2002-10-28 Werner Koch <wk@gnupg.org>
* w32reg.c (read_w32_registry_string): Fixed expanding of the * w32reg.c (read_w32_registry_string): Fixed expanding of the

16
util/secmem.c
View File

@ -406,10 +406,10 @@ secmem_free( void *a )
size = mb->size; size = mb->size;
/* This does not make much sense: probably this memory is held in the /* This does not make much sense: probably this memory is held in the
* cache. We do it anyway: */ * cache. We do it anyway: */
memset(mb, 0xff, size ); wipememory2(mb, 0xff, size );
memset(mb, 0xaa, size ); wipememory2(mb, 0xaa, size );
memset(mb, 0x55, size ); wipememory2(mb, 0x55, size );
memset(mb, 0x00, size ); wipememory2(mb, 0x00, size );
mb->size = size; mb->size = size;
mb->u.next = unused_blocks; mb->u.next = unused_blocks;
unused_blocks = mb; unused_blocks = mb;
@ -439,10 +439,10 @@ secmem_term()
if( !pool_okay ) if( !pool_okay )
return; return;
memset( pool, 0xff, poolsize); wipememory2( pool, 0xff, poolsize);
memset( pool, 0xaa, poolsize); wipememory2( pool, 0xaa, poolsize);
memset( pool, 0x55, poolsize); wipememory2( pool, 0x55, poolsize);
memset( pool, 0x00, poolsize); wipememory2( pool, 0x00, poolsize);
#ifdef HAVE_MMAP #ifdef HAVE_MMAP
if( pool_is_mmapped ) if( pool_is_mmapped )
munmap( pool, poolsize ); munmap( pool, poolsize );