- int retry_counter = 32;
- BN_BLINDING *ret = NULL;
-
- if (b == NULL)
- ret = BN_BLINDING_new(NULL, NULL, m);
- else
- ret = b;
-
- if (ret == NULL)
- goto err;
-
- if (ret->A == NULL && (ret->A = BN_new()) == NULL)
- goto err;
- if (ret->Ai == NULL && (ret->Ai = BN_new()) == NULL)
- goto err;
-
- if (e != NULL)
- {
- if (ret->e != NULL)
- BN_free(ret->e);
- ret->e = BN_dup(e);
- }
- if (ret->e == NULL)
- goto err;
-
- if (bn_mod_exp != NULL)
- ret->bn_mod_exp = bn_mod_exp;
- if (m_ctx != NULL)
- ret->m_ctx = m_ctx;
-
- do {
- int rv;
- if (!BN_rand_range(ret->A, ret->mod)) goto err;
- if (!int_bn_mod_inverse(ret->Ai, ret->A, ret->mod, ctx, &rv))
- {
- /* this should almost never happen for good RSA keys */
- if (rv)
- {
- if (retry_counter-- == 0)
- {
- BNerr(BN_F_BN_BLINDING_CREATE_PARAM,
- BN_R_TOO_MANY_ITERATIONS);
- goto err;
- }
- }
- else
- goto err;
- }
- else
- break;
- } while (1);
-
- if (ret->bn_mod_exp != NULL && ret->m_ctx != NULL)
- {
- if (!ret->bn_mod_exp(ret->A, ret->A, ret->e, ret->mod, ctx, ret->m_ctx))
- goto err;
- }
- else
- {
- if (!BN_mod_exp(ret->A, ret->A, ret->e, ret->mod, ctx))
- goto err;
- }
-
- return ret;
-err:
- if (b == NULL && ret != NULL)
- {
- BN_BLINDING_free(ret);
- ret = NULL;
- }
-
- return ret;
+ int retry_counter = 32;
+ BN_BLINDING *ret = NULL;
+
+ if (b == NULL)
+ ret = BN_BLINDING_new(NULL, NULL, m);
+ else
+ ret = b;
+
+ if (ret == NULL)
+ goto err;
+
+ if (ret->A == NULL && (ret->A = BN_new()) == NULL)
+ goto err;
+ if (ret->Ai == NULL && (ret->Ai = BN_new()) == NULL)
+ goto err;
+
+ if (e != NULL) {
+ BN_free(ret->e);
+ ret->e = BN_dup(e);
+ }
+ if (ret->e == NULL)
+ goto err;
+
+ if (bn_mod_exp != NULL)
+ ret->bn_mod_exp = bn_mod_exp;
+ if (m_ctx != NULL)
+ ret->m_ctx = m_ctx;
+
+ do {
+ int rv;
+ if (!BN_rand_range(ret->A, ret->mod))
+ goto err;
+ if (!int_bn_mod_inverse(ret->Ai, ret->A, ret->mod, ctx, &rv)) {
+ /*
+ * this should almost never happen for good RSA keys
+ */
+ if (rv) {
+ if (retry_counter-- == 0) {
+ BNerr(BN_F_BN_BLINDING_CREATE_PARAM,
+ BN_R_TOO_MANY_ITERATIONS);
+ goto err;
+ }
+ } else
+ goto err;
+ } else
+ break;
+ } while (1);
+
+ if (ret->bn_mod_exp != NULL && ret->m_ctx != NULL) {
+ if (!ret->bn_mod_exp
+ (ret->A, ret->A, ret->e, ret->mod, ctx, ret->m_ctx))
+ goto err;
+ } else {
+ if (!BN_mod_exp(ret->A, ret->A, ret->e, ret->mod, ctx))
+ goto err;
+ }
+
+ return ret;
+ err:
+ if (b == NULL) {
+ BN_BLINDING_free(ret);
+ ret = NULL;
+ }
+
+ return ret;