[#EVP_MD_CTX_copy]
= EVP_MD_CTX_copy
:mrdocs:

Copy a digest context into a freshly allocated destination (legacy helper).

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_MD_CTX_copy(
    xref:EVP_MD_CTX.adoc[EVP_MD_CTX]* out,
    xref:EVP_MD_CTX.adoc[EVP_MD_CTX] const* in);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *out*
| Destination context; must not already hold digest state (prefer EVP_MD_CTX_copy_ex).
| *in*
| Source context to duplicate.
|===


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