[#OSSL_CMP_CTX_set1_secretValue]
= OSSL_CMP_CTX_set1_secretValue
:mrdocs:

Set the shared secret used for MAC‐based CMP message protection.

== Synopsis

Declared in `<openssl/cmp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_CMP_CTX_set1_secretValue(
    xref:OSSL_CMP_CTX.adoc[OSSL_CMP_CTX]* ctx,
    unsigned char const* sec,
    int len);
----

== Return Value

1 on success, 0 on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| CMP context.
| *sec*
| Secret octets copied into the context.
| *len*
| Length of `sec` in bytes.
|===


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