Latest update.

2020-04-15 18:45:34 +09:00
parent be29e7bcc6
commit 2015c00c43
573 changed files with 22943 additions and 6714 deletions
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/core_names.h>
+#include <openssl/params.h>
+#include "crypto/rsa.h"
+
+/*
+ * The intention with the "backend" source file is to offer backend support
+ * for legacy backends (EVP_PKEY_ASN1_METHOD and EVP_PKEY_METHOD) and provider
+ * implementations alike.
+ */
+
+DEFINE_STACK_OF(BIGNUM)
+
+static int collect_numbers(STACK_OF(BIGNUM) *numbers,
+                           const OSSL_PARAM params[], const char *names[])
+{
+    const OSSL_PARAM *p = NULL;
+    int i;
+
+    if (numbers == NULL)
+        return 0;
+
+    for (i = 0; names[i] != NULL; i++){
+        p = OSSL_PARAM_locate_const(params, names[i]);
+        if (p != NULL) {
+            BIGNUM *tmp = NULL;
+
+            if (!OSSL_PARAM_get_BN(p, &tmp)
+                || sk_BIGNUM_push(numbers, tmp) == 0)
+                return 0;
+        }
+    }
+
+    return 1;
+}
+
+int rsa_fromdata(RSA *rsa, const OSSL_PARAM params[])
+{
+    const OSSL_PARAM *param_n, *param_e,  *param_d;
+    BIGNUM *n = NULL, *e = NULL, *d = NULL;
+    STACK_OF(BIGNUM) *factors = NULL, *exps = NULL, *coeffs = NULL;
+    int is_private = 0;
+
+    if (rsa == NULL)
+        return 0;
+
+    param_n = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_N);
+    param_e = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_E);
+    param_d = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_D);
+
+    if ((param_n != NULL && !OSSL_PARAM_get_BN(param_n, &n))
+        || (param_e != NULL && !OSSL_PARAM_get_BN(param_e, &e))
+        || (param_d != NULL && !OSSL_PARAM_get_BN(param_d, &d)))
+        goto err;
+
+    is_private = (d != NULL);
+
+    if (!RSA_set0_key(rsa, n, e, d))
+        goto err;
+    n = e = d = NULL;
+
+    if (is_private) {
+        if (!collect_numbers(factors = sk_BIGNUM_new_null(), params,
+                             rsa_mp_factor_names)
+            || !collect_numbers(exps = sk_BIGNUM_new_null(), params,
+                                rsa_mp_exp_names)
+            || !collect_numbers(coeffs = sk_BIGNUM_new_null(), params,
+                                rsa_mp_coeff_names))
+            goto err;
+
+        /* It's ok if this private key just has n, e and d */
+        if (sk_BIGNUM_num(factors) != 0
+            && !rsa_set0_all_params(rsa, factors, exps, coeffs))
+            goto err;
+    }
+
+    sk_BIGNUM_free(factors);
+    sk_BIGNUM_free(exps);
+    sk_BIGNUM_free(coeffs);
+    return 1;
+
+ err:
+    BN_free(n);
+    BN_free(e);
+    BN_free(d);
+    sk_BIGNUM_pop_free(factors, BN_free);
+    sk_BIGNUM_pop_free(exps, BN_free);
+    sk_BIGNUM_pop_free(coeffs, BN_free);
+    return 0;
+}
+