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Implement internally opaque bn access from rsa

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Reviewed-by: Tim Hudson <tjh@openssl.org>
This commit is contained in:
Matt Caswell
2014-10-28 23:00:29 +00:00
parent 68c29f61a4
commit 18125f7f55
7 changed files with 130 additions and 55 deletions
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18
crypto/rsa/rsa_lib.c
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@@ -60,7 +60,7 @@
#include <openssl/crypto.h>
#include "cryptlib.h"
#include <openssl/lhash.h>
#include <openssl/bn.h>
#include "internal/bn_int.h"
#include <openssl/rsa.h>
#include <openssl/rand.h>
#ifndef OPENSSL_NO_ENGINE
@@ -290,27 +290,27 @@ int RSA_memory_lock(RSA *r)
t[3]= &r->dmp1;
t[4]= &r->dmq1;
t[5]= &r->iqmp;
k=sizeof(BIGNUM)*6;
k=bn_sizeof_BIGNUM()*6;
off=k/sizeof(BN_ULONG)+1;
j=1;
for (i=0; i<6; i++)
j+= (*t[i])->top;
j+= bn_get_top(*t[i]);
if ((p=OPENSSL_malloc_locked((off+j)*sizeof(BN_ULONG))) == NULL)
{
RSAerr(RSA_F_RSA_MEMORY_LOCK,ERR_R_MALLOC_FAILURE);
return(0);
}
memset(p, 0, (off+j)*sizeof(BN_ULONG));
bn=(BIGNUM *)p;
ul=(BN_ULONG *)&(p[off]);
for (i=0; i<6; i++)
{
b= *(t[i]);
*(t[i])= &(bn[i]);
memcpy((char *)&(bn[i]),(char *)b,sizeof(BIGNUM));
bn[i].flags=BN_FLG_STATIC_DATA;
bn[i].d=ul;
memcpy((char *)ul,b->d,sizeof(BN_ULONG)*b->top);
ul+=b->top;
*(t[i])= bn_array_el(bn, i);
memcpy((char *)bn_array_el(bn, i),(char *)b,bn_sizeof_BIGNUM());
memcpy((char *)ul,bn_get_words(b),sizeof(BN_ULONG)*bn_get_top(b));
bn_set_static_words(bn_array_el(bn, i), ul, bn_get_top(b));
ul+=bn_get_top(b);
BN_clear_free(b);
}