[#ASN1_STRING_set_default_mask]
= ASN1_STRING_set_default_mask
:mrdocs:

Set the process‐wide default B_ASN1_* mask used when selecting ASN.1 string types.

== Synopsis

Declared in `<openssl/asn1.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
ASN1_STRING_set_default_mask(unsigned long mask);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *mask*
| Bitmask of permitted string types (for example B_ASN1_UTF8STRING).
|===


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