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The new BN_CTX code makes this sort of abuse unnecessary.

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This commit is contained in:
Geoff Thorpe 2004-04-28 18:34:39 +00:00
parent b6b4fdc9e2
commit 08e1cbc62c
1 changed files with 15 additions and 19 deletions
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34
crypto/dsa/dsa_gen.c
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@ -111,7 +111,7 @@ static int dsa_builtin_paramgen(DSA *ret, int bits,
int k,n=0,i,b,m=0;
int counter=0;
int r=0;
BN_CTX *ctx=NULL,*ctx2=NULL,*ctx3=NULL;
BN_CTX *ctx=NULL;
unsigned int h=2;
if (bits < 512) bits=512;
@ -126,20 +126,18 @@ static int dsa_builtin_paramgen(DSA *ret, int bits,
memcpy(seed,seed_in,seed_len);
if ((ctx=BN_CTX_new()) == NULL) goto err;
if ((ctx2=BN_CTX_new()) == NULL) goto err;
if ((ctx3=BN_CTX_new()) == NULL) goto err;
if ((mont=BN_MONT_CTX_new()) == NULL) goto err;
BN_CTX_start(ctx2);
r0 = BN_CTX_get(ctx2);
g = BN_CTX_get(ctx2);
W = BN_CTX_get(ctx2);
q = BN_CTX_get(ctx2);
X = BN_CTX_get(ctx2);
c = BN_CTX_get(ctx2);
p = BN_CTX_get(ctx2);
test = BN_CTX_get(ctx2);
BN_CTX_start(ctx);
r0 = BN_CTX_get(ctx);
g = BN_CTX_get(ctx);
W = BN_CTX_get(ctx);
q = BN_CTX_get(ctx);
X = BN_CTX_get(ctx);
c = BN_CTX_get(ctx);
p = BN_CTX_get(ctx);
test = BN_CTX_get(ctx);
BN_lshift(test,BN_value_one(),bits-1);
@ -184,7 +182,7 @@ static int dsa_builtin_paramgen(DSA *ret, int bits,
if (!BN_bin2bn(md,SHA_DIGEST_LENGTH,q)) goto err;
/* step 4 */
r = BN_is_prime_fasttest_ex(q, DSS_prime_checks, ctx3,
r = BN_is_prime_fasttest_ex(q, DSS_prime_checks, ctx,
seed_is_random, cb);
if (r > 0)
break;
@ -247,7 +245,7 @@ static int dsa_builtin_paramgen(DSA *ret, int bits,
{
/* step 11 */
r = BN_is_prime_fasttest_ex(p, DSS_prime_checks,
ctx3, 1, cb);
ctx, 1, cb);
if (r > 0)
goto end; /* found it */
if (r != 0)
@ -300,13 +298,11 @@ err:
if (counter_ret != NULL) *counter_ret=counter;
if (h_ret != NULL) *h_ret=h;
}
if (ctx != NULL) BN_CTX_free(ctx);
if (ctx2 != NULL)
if(ctx)
{
BN_CTX_end(ctx2);
BN_CTX_free(ctx2);
BN_CTX_end(ctx);
BN_CTX_free(ctx);
}
if (ctx3 != NULL) BN_CTX_free(ctx3);
if (mont != NULL) BN_MONT_CTX_free(mont);
return ok;
}