[#PKCS5_pbe2_set_iv]
= PKCS5_pbe2_set_iv
:mrdocs:

Build a PKCS#5 PBES2 AlgorithmIdentifier for `cipher` with optional IV and PBKDF2 PRF.

== Synopsis

Declared in `<openssl/x509.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:X509_ALGOR.adoc[X509_ALGOR]*
PKCS5_pbe2_set_iv(
    xref:EVP_CIPHER-07.adoc[EVP_CIPHER] const* cipher,
    int iter,
    unsigned char* salt,
    int saltlen,
    unsigned char* aiv,
    int prf_nid);
----

== Return Value

Newly allocated X509_ALGOR, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cipher*
| Cipher that defines the encryption scheme.
| *iter*
| PBKDF2 iteration count.
| *salt*
| Salt bytes, or NULL as implemented.
| *saltlen*
| Length of `salt` in bytes.
| *aiv*
| Explicit IV bytes, or NULL to generate one.
| *prf_nid*
| NID of the PBKDF2 PRF, or 0 for the default.
|===


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