[#EVP_CIPHER_impl_ctx_size]
= EVP_CIPHER_impl_ctx_size
:mrdocs:

Return the size of the cipher's legacy implementation context (deprecated).

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
EVP_CIPHER_impl_ctx_size(xref:EVP_CIPHER-07.adoc[EVP_CIPHER] const* cipher);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

Context size in bytes expected by the method's init/do_cipher callbacks.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cipher*
| Cipher method to query.
|===


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