[#PKCS5_pbe_set_ex]
= PKCS5_pbe_set_ex
:mrdocs:

Build a PKCS#5 PBE AlgorithmIdentifier using an explicit library context.

== Synopsis

Declared in `<openssl/x509.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:X509_ALGOR.adoc[X509_ALGOR]*
PKCS5_pbe_set_ex(
    int alg,
    int iter,
    unsigned char const* salt,
    int saltlen,
    xref:OSSL_LIB_CTX.adoc[OSSL_LIB_CTX]* libctx);
----

== Return Value

New X509_ALGOR, or NULL on error; free with X509_ALGOR_free().

== Parameters

[cols="1,4"]
|===
| Name| Description
| *alg*
| PBE algorithm NID.
| *iter*
| Iteration count.
| *salt*
| Salt bytes, or NULL to generate a random salt of `saltlen.`
| *saltlen*
| Salt length in bytes.
| *libctx*
| Library context used when generating a random salt, or NULL for the default.
|===


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