[#EVP_CIPHER_CTX_get_original_iv]
= EVP_CIPHER_CTX_get_original_iv
:mrdocs:

Copy the original IV from a cipher context into `buf.`

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_CIPHER_CTX_get_original_iv(
    xref:EVP_CIPHER_CTX.adoc[EVP_CIPHER_CTX]* ctx,
    void* buf,
    size_t len);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Cipher context previously initialized with an IV.
| *buf*
| Destination buffer for the IV bytes.
| *len*
| Capacity of `buf` in bytes (must be at least the IV length).
|===


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