New functions BN_CTX_start(), BN_CTX_get(), BN_CTX_end() to access
[openssl.git] / crypto / rsa / rsa_lib.c
index c6b1a59..074a4f5 100644 (file)
@@ -269,19 +269,19 @@ int RSA_blinding_on(RSA *rsa, BN_CTX *p_ctx)
        if (rsa->blinding != NULL)
                BN_BLINDING_free(rsa->blinding);
 
-       A= &(ctx->bn[0]);
-       ctx->tos++;
+       BN_CTX_start(ctx);
+       A = BN_CTX_get(ctx);
        if (!BN_rand(A,BN_num_bits(rsa->n)-1,1,0)) goto err;
        if ((Ai=BN_mod_inverse(NULL,A,rsa->n,ctx)) == NULL) goto err;
 
        if (!rsa->meth->bn_mod_exp(A,A,rsa->e,rsa->n,ctx,rsa->_method_mod_n))
            goto err;
        rsa->blinding=BN_BLINDING_new(A,Ai,rsa->n);
-       ctx->tos--;
        rsa->flags|=RSA_FLAG_BLINDING;
        BN_free(Ai);
        ret=1;
 err:
+       BN_CTX_end(ctx);
        if (ctx != p_ctx) BN_CTX_free(ctx);
        return(ret);
        }