[#EC_POINT_point2hex]
= EC_POINT_point2hex
:mrdocs:

Encode an EC point as a newly allocated hexadecimal octet string.

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
char*
EC_POINT_point2hex(
    xref:EC_GROUP.adoc[EC_GROUP] const* group,
    xref:EC_POINT.adoc[EC_POINT] const* point,
    point_conversion_form_t form,
    xref:BN_CTX.adoc[BN_CTX]* ctx);
----

== Return Value

NUL‐terminated hex string (caller must OPENSSL_free), or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *group*
| Curve that defines the point encoding.
| *point*
| Point to encode.
| *form*
| Conversion form such as POINT_CONVERSION_UNCOMPRESSED.
| *ctx*
| BN_CTX for temporary values, or NULL to allocate internally.
|===


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