[#EC_POINT_point2oct]
= EC_POINT_point2oct
:mrdocs:

Encodes a EC_POINT object to a octet string

== Synopsis

Declared in `<openssl/ec.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
size_t
EC_POINT_point2oct(
    xref:EC_GROUP.adoc[EC_GROUP] const* group,
    xref:EC_POINT.adoc[EC_POINT] const* p,
    point_conversion_form_t form,
    unsigned char* buf,
    size_t len,
    xref:BN_CTX.adoc[BN_CTX]* ctx);
----

== Return Value

the length of the encoded octet string or 0 if an error occurred

== Parameters

[cols="1,4"]
|===
| Name| Description
| *group*
| underlying EC_GROUP object
| *p*
| EC_POINT object
| *form*
| point conversion form
| *buf*
| memory buffer for the result. If NULL the function returns required buffer size.
| *len*
| length of the memory buffer
| *ctx*
| BN_CTX object (optional)
|===


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