[#PEM_SignInit]
= PEM_SignInit
:mrdocs:

Initialize an EVP_MD_CTX for signing with digest `type` (used by PEM_Sign*).

== Synopsis

Declared in `<openssl/pem.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
PEM_SignInit(
    xref:EVP_MD_CTX.adoc[EVP_MD_CTX]* ctx,
    xref:EVP_MD.adoc[EVP_MD]* type);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Digest context to initialize for signing.
| *type*
| Message digest algorithm (for example EVP_sha256()).
|===


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