krb5_get_init_creds_opt_set_preauth_list -  Set preauthentication types in initial credential options. 
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.. c:function:: void krb5_get_init_creds_opt_set_preauth_list(krb5_get_init_creds_opt * opt, krb5_preauthtype * preauth_list, int preauth_list_length)

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:param:

	          **[in]** **opt** - Options structure

	          **[in]** **preauth_list** - Array of preauthentication types

	          **[in]** **preauth_list_length** - Length of *preauth_list*


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This function can be used to perform optimistic preauthentication when getting initial credentials, in combination with krb5_get_init_creds_opt_set_salt() and krb5_get_init_creds_opt_set_pa().






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