[#SSL_CTX_use_PrivateKey_ASN1]
= SSL_CTX_use_PrivateKey_ASN1
:mrdocs:

Install a private key of type `pk` from a DER buffer on an SSL context.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
SSL_CTX_use_PrivateKey_ASN1(
    int pk,
    xref:SSL_CTX.adoc[SSL_CTX]* ctx,
    unsigned char const* d,
    long len);
----

== Return Value

* 1 on success, or 0 on failure.
* 1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pk*
| Private‐key ASN.1 type such as EVP_PKEY_RSA or EVP_PKEY_EC.
| *ctx*
| SSL context that receives the key; it must match any certificate already set.
| *d*
| Buffer containing a DER‐encoded private key of type `pk.`
| *len*
| Length of `d` in bytes.
|===


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