[#EVP_PKEY_meth_set_digestsign]
= EVP_PKEY_meth_set_digestsign
:mrdocs:

Set the one‐shot DigestSign callback on an EVP_PKEY_METHOD (deprecated).

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
void
EVP_PKEY_meth_set_digestsign(
    xref:EVP_PKEY_METHOD.adoc[EVP_PKEY_METHOD]* pmeth,
    int(* digestsign)(xref:EVP_MD_CTX.adoc[EVP_MD_CTX]*, unsigned char*, size_t*, unsigned char const*, size_t));
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *pmeth*
| Method table to update.
| *digestsign*
| Callback implementing EVP_DigestSign()‐style signing, or NULL to clear.
|===


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