diff options
Diffstat (limited to 'cipher/rmd160.c')
| -rw-r--r-- | cipher/rmd160.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/cipher/rmd160.c b/cipher/rmd160.c index cce9d3c5..d3f00f2e 100644 --- a/cipher/rmd160.c +++ b/cipher/rmd160.c @@ -141,6 +141,18 @@ * 1 million times "a" 52783243c1697bdbe16d37f97f68f08325dc1528 */ +static void +burn_stack (int bytes) +{ + char buf[150]; + + memset (buf, 0, sizeof buf); + bytes -= sizeof buf; + if (bytes > 0) + burn_stack (bytes); +} + + void _gcry_rmd160_init( RMD160_CONTEXT *hd ) @@ -405,6 +417,7 @@ rmd160_write( RMD160_CONTEXT *hd, byte *inbuf, size_t inlen) { if( hd->count == 64 ) { /* flush the buffer */ transform( hd, hd->buf ); + burn_stack (108+5*sizeof(void*)); hd->count = 0; hd->nblocks++; } @@ -425,6 +438,7 @@ rmd160_write( RMD160_CONTEXT *hd, byte *inbuf, size_t inlen) inlen -= 64; inbuf += 64; } + burn_stack (108+5*sizeof(void*)); for( ; inlen && hd->count < 64; inlen-- ) hd->buf[hd->count++] = *inbuf++; } @@ -497,6 +511,7 @@ rmd160_final( RMD160_CONTEXT *hd ) hd->buf[62] = msb >> 16; hd->buf[63] = msb >> 24; transform( hd, hd->buf ); + burn_stack (108+5*sizeof(void*)); p = hd->buf; #ifdef BIG_ENDIAN_HOST |