[#ASN1_parse]
= ASN1_parse
:mrdocs:

Recursively dump a DER ASN.1 structure to a BIO as indented text.

== Synopsis

Declared in `<openssl/asn1.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
ASN1_parse(
    xref:BIO.adoc[BIO]* bp,
    unsigned char const* pp,
    long len,
    int indent);
----

== Return Value

1 on success, or 0 on parse error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *bp*
| BIO that receives the human‐readable parse tree.
| *pp*
| DER encoding to parse.
| *len*
| Number of bytes at `pp.`
| *indent*
| Indentation depth in spaces for the top‐level element.
|===


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