[#EC_GROUP_new_curve_GF2m]
= EC_GROUP_new_curve_GF2m
:mrdocs:

Creates a new EC_GROUP object with the specified parameters defined over GF2m (defined by the equation yˆ2 + x_y = xˆ3 + a_xˆ2 + b)

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:EC_GROUP.adoc[EC_GROUP]*
EC_GROUP_new_curve_GF2m(
    xref:BIGNUM.adoc[BIGNUM] const* p,
    xref:BIGNUM.adoc[BIGNUM] const* a,
    xref:BIGNUM.adoc[BIGNUM] const* b,
    xref:BN_CTX.adoc[BN_CTX]* ctx);
----

== Return Value

newly created EC_GROUP object with the specified parameters

== Parameters

[cols="1,4"]
|===
| Name| Description
| *p*
| BIGNUM with the polynomial defining the underlying field
| *a*
| BIGNUM with the parameter a of the equation
| *b*
| BIGNUM with the parameter b of the equation
| *ctx*
| BN_CTX object (optional)
|===


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