[#DSA_generate_parameters]
= DSA_generate_parameters
:mrdocs:

Generate DSA domain parameters with a legacy progress callback (deprecated).

== Synopsis

Declared in `<openssl/dsa.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
xref:DSA.adoc[DSA]*
DSA_generate_parameters(
    int bits,
    unsigned char* seed,
    int seed_len,
    int* counter_ret,
    unsigned long* h_ret,
    void(* callback)(int, int, void*),
    void* cb_arg);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

Newly allocated DSA with generated parameters, or NULL on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *bits*
| Desired length of the prime p in bits.
| *seed*
| Optional seed bytes for reproducible generation, or NULL.
| *seed_len*
| Length of `seed` in bytes.
| *counter_ret*
| Optional out‐parameter receiving the counter used, or NULL.
| *h_ret*
| Optional out‐parameter receiving the h value used, or NULL.
| *callback*
| Optional progress callback, or NULL.
| *cb_arg*
| Opaque pointer passed to `callback.`
|===


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