[#EC_POINT_bn2point]
= EC_POINT_bn2point
:mrdocs:

Decode an EC point from a BIGNUM holding the SEC1 octet form (deprecated).

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
xref:EC_POINT.adoc[EC_POINT]*
EC_POINT_bn2point(
    xref:EC_GROUP.adoc[EC_GROUP] const* group,
    xref:BIGNUM.adoc[BIGNUM] const* bn,
    xref:EC_POINT.adoc[EC_POINT]* point,
    xref:BN_CTX.adoc[BN_CTX]* ctx);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

Pointer to the result EC_POINT (same as `point` when non‐NULL), or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *group*
| Curve that defines the point encoding.
| *bn*
| BIGNUM whose big‐endian content is the SEC1 octet string of the point.
| *point*
| Optional EC_POINT to reuse for the result, or NULL to allocate one.
| *ctx*
| BN_CTX for temporary values, or NULL.
|===


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