1 files changed, 98 insertions, 0 deletions
diff --git a/crypto/ec/ecx_key.c b/crypto/ec/ecx_key.c
new file mode 100644
index 000000000000..dcec26c2e9b3
--- /dev/null
+++ b/crypto/ec/ecx_key.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2020-2021 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 <string.h>
+#include <openssl/err.h>
+#include "crypto/ecx.h"
+
+ECX_KEY *ossl_ecx_key_new(OSSL_LIB_CTX *libctx, ECX_KEY_TYPE type, int haspubkey,
+                          const char *propq)
+{
+    ECX_KEY *ret = OPENSSL_zalloc(sizeof(*ret));
+
+    if (ret == NULL)
+        return NULL;
+
+    ret->libctx = libctx;
+    ret->haspubkey = haspubkey;
+    switch (type) {
+    case ECX_KEY_TYPE_X25519:
+        ret->keylen = X25519_KEYLEN;
+        break;
+    case ECX_KEY_TYPE_X448:
+        ret->keylen = X448_KEYLEN;
+        break;
+    case ECX_KEY_TYPE_ED25519:
+        ret->keylen = ED25519_KEYLEN;
+        break;
+    case ECX_KEY_TYPE_ED448:
+        ret->keylen = ED448_KEYLEN;
+        break;
+    }
+    ret->type = type;
+    ret->references = 1;
+
+    if (propq != NULL) {
+        ret->propq = OPENSSL_strdup(propq);
+        if (ret->propq == NULL)
+            goto err;
+    }
+
+    ret->lock = CRYPTO_THREAD_lock_new();
+    if (ret->lock == NULL)
+        goto err;
+    return ret;
+err:
+    ERR_raise(ERR_LIB_EC, ERR_R_MALLOC_FAILURE);
+    OPENSSL_free(ret);
+    return NULL;
+}
+
+void ossl_ecx_key_free(ECX_KEY *key)
+{
+    int i;
+
+    if (key == NULL)
+        return;
+
+    CRYPTO_DOWN_REF(&key->references, &i, key->lock);
+    REF_PRINT_COUNT("ECX_KEY", key);
+    if (i > 0)
+        return;
+    REF_ASSERT_ISNT(i < 0);
+
+    OPENSSL_free(key->propq);
+    OPENSSL_secure_clear_free(key->privkey, key->keylen);
+    CRYPTO_THREAD_lock_free(key->lock);
+    OPENSSL_free(key);
+}
+
+void ossl_ecx_key_set0_libctx(ECX_KEY *key, OSSL_LIB_CTX *libctx)
+{
+    key->libctx = libctx;
+}
+
+int ossl_ecx_key_up_ref(ECX_KEY *key)
+{
+    int i;
+
+    if (CRYPTO_UP_REF(&key->references, &i, key->lock) <= 0)
+        return 0;
+
+    REF_PRINT_COUNT("ECX_KEY", key);
+    REF_ASSERT_ISNT(i < 2);
+    return ((i > 1) ? 1 : 0);
+}
+
+unsigned char *ossl_ecx_key_allocate_privkey(ECX_KEY *key)
+{
+    key->privkey = OPENSSL_secure_zalloc(key->keylen);
+
+    return key->privkey;
+}