[#PEM_dek_info]
= PEM_dek_info
:mrdocs:

Append a DEK‐Info encapsulation header (cipher name and hex IV) to a PEM header.

== Synopsis

Declared in `<openssl/pem.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
PEM_dek_info(
    char* buf,
    char const* type,
    int len,
    char const* str);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *buf*
| NUL‐terminated buffer of size PEM_BUFSIZE to append into.
| *type*
| Cipher name string (for example from EVP_CIPHER_get0_name()).
| *len*
| Number of IV bytes at `str.`
| *str*
| IV bytes written as uppercase hex after the cipher name.
|===


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