[#EC_GROUP_set_asn1_flag]
= EC_GROUP_set_asn1_flag
:mrdocs:

Select whether an EC_GROUP encodes as a named curve or with explicit parameters.

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
EC_GROUP_set_asn1_flag(
    xref:EC_GROUP.adoc[EC_GROUP]* group,
    int flag);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *group*
| EC_GROUP whose ASN.1 encoding flag is set.
| *flag*
| OPENSSL_EC_NAMED_CURVE or OPENSSL_EC_EXPLICIT_CURVE.
|===


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