[#EVP_PKEY_can_sign]
= EVP_PKEY_can_sign
:mrdocs:

Test whether a key type supports signing operations.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_can_sign(xref:EVP_PKEY.adoc[EVP_PKEY] const* pkey);
----

== Return Value

1 if the key can be used for signing, or 0 otherwise.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pkey*
| Key to query.
|===


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