 NULL then the maximum length of the decapsulated data should be written to <i>*outlen</i>.</p>

<h2 id="Asymmetric-Key-Encapsulation-Parameters">Asymmetric Key Encapsulation Parameters</h2>

<p>See <a href="../man3/OSSL_PARAM.html">OSSL_PARAM(3)</a> for further details on the parameters structure used by the OSSL_FUNC_kem_get_ctx_params() and OSSL_FUNC_kem_set_ctx_params() functions.</p>

<p>The OpenSSL FIPS provider also supports the following parameters:</p>

<dl>

<dt id="fips-indicator-OSSL_KEM_PARAM_F