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-rw-r--r--include/internal/sizes.h22
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diff --git a/include/internal/sizes.h b/include/internal/sizes.h
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+/*
+ * 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
+ */
+
+#ifndef OSSL_INTERNAL_SIZES_H
+# define OSSL_INTERNAL_SIZES_H
+# pragma once
+
+/*
+ * Max sizes used to allocate buffers with a fixed sizes, for example for
+ * stack allocations, structure fields, ...
+ */
+# define OSSL_MAX_NAME_SIZE 50 /* Algorithm name */
+# define OSSL_MAX_PROPQUERY_SIZE 256 /* Property query strings */
+# define OSSL_MAX_ALGORITHM_ID_SIZE 256 /* AlgorithmIdentifier DER */
+
+#endif