[#EVP_PKEY_asn1_new]
= EVP_PKEY_asn1_new
:mrdocs:

Allocate a new custom EVP_PKEY_ASN1_METHOD for algorithm `id.`

== Synopsis

Declared in `<openssl/evp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:EVP_PKEY_ASN1_METHOD.adoc[EVP_PKEY_ASN1_METHOD]*
EVP_PKEY_asn1_new(
    int id,
    int flags,
    char const* pem_str,
    char const* info);
----

== Return Value

New mutable ASN.1 method, or NULL on allocation failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *id*
| Public‐key algorithm NID for the method.
| *flags*
| ASN1 method flags such as ASN1_PKEY_SIGPARAM_NULL.
| *pem_str*
| PEM algorithm name string associated with this method, or NULL.
| *info*
| Optional human‐readable description stored on the method, or NULL.
|===


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