[#OSSL_CMP_MSG_write]
= OSSL_CMP_MSG_write
:mrdocs:

Write a CMP message to a file in DER encoding.

== Synopsis

Declared in `<openssl/cmp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_CMP_MSG_write(
    char const* file,
    xref:OSSL_CMP_MSG.adoc[OSSL_CMP_MSG] const* msg);
----

== Return Value

Number of bytes written, or a negative value on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *file*
| Destination file path.
| *msg*
| CMP message to write.
|===


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