[#EC_GROUP_set_generator]
= EC_GROUP_set_generator
:mrdocs:

Sets the generator and its order/cofactor of a EC_GROUP object.

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EC_GROUP_set_generator(
    xref:EC_GROUP.adoc[EC_GROUP]* group,
    xref:EC_POINT.adoc[EC_POINT] const* generator,
    xref:BIGNUM.adoc[BIGNUM] const* order,
    xref:BIGNUM.adoc[BIGNUM] const* cofactor);
----

== Return Value

1 on success and 0 if an error occurred

== Parameters

[cols="1,4"]
|===
| Name| Description
| *group*
| EC_GROUP object
| *generator*
| EC_POINT object with the generator.
| *order*
| the order of the group generated by the generator.
| *cofactor*
| the index of the sub‐group generated by the generator in the group of all points on the elliptic curve.
|===


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