ck() sets the set of trusted certificates of <i>ctx</i> to <i>sk</i>. This is an alternative way of specifying trusted certificates instead of using an <b>X509_STORE</b> where its complexity is not needed or to make sure that only the given set <i>sk</i> of certificates are trusted.</p>

<p>X509_STORE_CTX_set_cert() sets the target certificate to be verified in <i>ctx</i> to <i>target</i>. The target certificate is not copied (its reference count is not updated), and the caller must not free it before verif