[#EVP_PKEY_CTX_get_group_name]
= EVP_PKEY_CTX_get_group_name
:mrdocs:

Copy the elliptic‐curve or DH group name from a key context into a caller buffer.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_CTX_get_group_name(
    xref:EVP_PKEY_CTX.adoc[EVP_PKEY_CTX]* ctx,
    char* name,
    size_t namelen);
----

== Return Value

1 on success, or a non‐positive value on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Key context whose group / curve name is queried.
| *name*
| Destination buffer for the NUL‐terminated name.
| *namelen*
| Capacity of `name` in bytes.
|===


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