[#ASN1_OCTET_STRING_set]
= ASN1_OCTET_STRING_set
:mrdocs:

Copy `data` of length `len` into an ASN.1 OCTET STRING.

== Synopsis

Declared in `<openssl/asn1.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
ASN1_OCTET_STRING_set(
    xref:ASN1_OCTET_STRING.adoc[ASN1_OCTET_STRING]* str,
    unsigned char const* data,
    int len);
----

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *str*
| Octet string whose content is replaced.
| *data*
| Bytes to copy into `str.`
| *len*
| Number of bytes at `data.`
|===


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