[#evp_cipher_info_st-iv]
= xref:evp_cipher_info_st.adoc[evp&lowbar;cipher&lowbar;info&lowbar;st]::iv
:relfileprefix: ../
:mrdocs:

Initialization vector octets for `cipher` (up to EVP&lowbar;MAX&lowbar;IV&lowbar;LENGTH bytes)&period;

== Synopsis

Declared in `&lt;openssl&sol;evp&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
unsigned char iv[];
----


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