[#PEM_SignFinal]
= PEM_SignFinal
:mrdocs:

Finalize a PEM signing operation and write the signature.

== Synopsis

Declared in `<openssl/pem.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
PEM_SignFinal(
    xref:EVP_MD_CTX.adoc[EVP_MD_CTX]* ctx,
    unsigned char* sigret,
    unsigned int* siglen,
    xref:EVP_PKEY.adoc[EVP_PKEY]* pkey);
----

== Return Value

1 on success, or 0 on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Digest context previously updated with data to sign.
| *sigret*
| Buffer receiving the signature.
| *siglen*
| Receives the signature length in bytes.
| *pkey*
| Private key used to generate the signature.
|===


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