[#EVP_PKEY_asn1_set_check]
= EVP_PKEY_asn1_set_check
:mrdocs:

Install the full‐key consistency check callback on an ASN.1 method.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
EVP_PKEY_asn1_set_check(
    xref:EVP_PKEY_ASN1_METHOD.adoc[EVP_PKEY_ASN1_METHOD]* ameth,
    int(* pkey_check)(xref:EVP_PKEY.adoc[EVP_PKEY] const*));
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ameth*
| ASN.1 method being configured.
| *pkey_check*
| Callback that returns 1 if `pk` is consistent, or NULL to clear.
|===


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