[#EVP_PKEY_CTX_is_a]
= EVP_PKEY_CTX_is_a
:mrdocs:

Test whether a key context is for the named key type.

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_CTX_is_a(
    xref:EVP_PKEY_CTX.adoc[EVP_PKEY_CTX]* ctx,
    char const* keytype);
----

== Return Value

1 if `ctx` matches `keytype,` or 0 otherwise.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Key context to query.
| *keytype*
| Algorithm name such as "RSA" or "EC".
|===


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