krb5_get_etype_info -  Retrieve enctype, salt and s2kparams from KDC. 
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.. c:function:: krb5_error_code krb5_get_etype_info(krb5_context context, krb5_principal principal, krb5_get_init_creds_opt * opt, krb5_enctype * enctype_out, krb5_data * salt_out, krb5_data * s2kparams_out)

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:param:

	          **[in]** **context** - Library context

	          **[in]** **principal** - Principal whose information is requested

	          **[in]** **opt** - Initial credential options

	          **[out]** **enctype_out** - The enctype chosen by KDC

	          **[out]** **salt_out** - Salt returned from KDC

	          **[out]** **s2kparams_out** - String-to-key parameters returned from KDC


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:retval:
         -   0   Success


:return:
         -  A Kerberos error code 

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Send an initial ticket request for *principal* and extract the encryption type, salt type, and string-to-key parameters from the KDC response. If the KDC provides no etype-info, set *enctype_out* to **ENCTYPE_NULL** and set *salt_out* and *s2kparams_out* to empty. If the KDC etype-info provides no salt, compute the default salt and place it in *salt_out* . If the KDC etype-info provides no string-to-key parameters, set *s2kparams_out* to empty.



 *opt* may be used to specify options which affect the initial request, such as request encryption types or a FAST armor cache (see :c:func:`krb5_get_init_creds_opt_set_etype_list()` and :c:func:`krb5_get_init_creds_opt_set_fast_ccache_name()` ).



Use :c:func:`krb5_free_data_contents()` to free *salt_out* and *s2kparams_out* when they are no longer needed.










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.. note::

	 New in 1.17
 

