[#EVP_PKEY_CTX_set_rsa_padding]
= EVP_PKEY_CTX_set_rsa_padding
:mrdocs:

Set the RSA padding mode on an EVP_PKEY_CTX.

== Synopsis

Declared in `<openssl/rsa.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
EVP_PKEY_CTX_set_rsa_padding(
    xref:EVP_PKEY_CTX.adoc[EVP_PKEY_CTX]* ctx,
    int pad_mode);
----

== Return Value

Positive value on success, or 0 / negative on failure (‐2 if unsupported).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Context used for RSA encrypt, decrypt, sign, or verify.
| *pad_mode*
| Padding mode such as RSA_PKCS1_PADDING, RSA_NO_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_X931_PADDING, RSA_PKCS1_PSS_PADDING, or RSA_PKCS1_WITH_TLS_PADDING.
|===


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