[#SMIME_read_ASN1]
= SMIME_read_ASN1
:mrdocs:

Parse an S/MIME message into an ASN.1 structure described by `it` (flags=0).

== Synopsis

Declared in `<openssl/asn1.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:ASN1_VALUE.adoc[ASN1_VALUE]*
SMIME_read_ASN1(
    xref:BIO.adoc[BIO]* bio,
    xref:BIO.adoc[BIO]** bcont,
    xref:ASN1_ITEM.adoc[ASN1_ITEM] const* it);
----

== Return Value

Parsed ASN1_VALUE, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *bio*
| BIO that supplies the S/MIME input.
| *bcont*
| If non‐NULL, set to a memory BIO holding cleartext signed content, or NULL when absent.
| *it*
| Item descriptor such as ASN1_ITEM_rptr(CMS_ContentInfo) or ASN1_ITEM_rptr(PKCS7).
|===


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