Latest update

crypto/asn1/d2i_param.c

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019 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 <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/evp.h>
+#include <openssl/asn1.h>
+#include "internal/evp_int.h"
+#include "internal/asn1_int.h"
+
+EVP_PKEY *d2i_KeyParams(int type, EVP_PKEY **a, const unsigned char **pp,
+                        long length)
+{
+    EVP_PKEY *ret = NULL;
+    const unsigned char *p = *pp;
+
+    if ((a == NULL) || (*a == NULL)) {
+        if ((ret = EVP_PKEY_new()) == NULL)
+            return NULL;
+    } else
+        ret = *a;
+
+    if (type != EVP_PKEY_id(ret) && !EVP_PKEY_set_type(ret, type))
+        goto err;
+
+    if (ret->ameth == NULL || ret->ameth->param_decode == NULL) {
+        ASN1err(ASN1_F_D2I_KEYPARAMS, ASN1_R_UNSUPPORTED_TYPE);
+        goto err;
+    }
+
+    if (!ret->ameth->param_decode(ret, &p, length))
+        goto err;
+
+    if (a != NULL)
+        (*a) = ret;
+    return ret;
+err:
+    if (a == NULL || *a != ret)
+        EVP_PKEY_free(ret);
+    return NULL;
+}
+
+EVP_PKEY *d2i_KeyParams_bio(int type, EVP_PKEY **a, BIO *in)
+{
+    BUF_MEM *b = NULL;
+    const unsigned char *p;
+    void *ret = NULL;
+    int len;
+
+    len = asn1_d2i_read_bio(in, &b);
+    if (len < 0)
+        goto err;
+
+    p = (unsigned char *)b->data;
+    ret = d2i_KeyParams(type, a, &p, len);
+err:
+    BUF_MEM_free(b);
+    return ret;
+}