# MIT Kerberos Documentation

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# krb5_kdc_verify_ticket - Verify a PAC, possibly including ticket signature.

krb5_error_code krb5_kdc_verify_ticket(krb5_context context, const krb5_enc_tkt_part *enc_tkt, krb5_const_principal server_princ, const krb5_keyblock *server, const krb5_keyblock *privsvr, krb5_pac *pac_out)

param:

  [in] context - Library context

  [in] enc_tkt - Ticket enc-part, possibly containing a PAC

  [in] server_princ - Canonicalized name of ticket server

  [in] server - Key to validate server checksum (or NULL)

  [in] privsvr - Key to validate KDC checksum (or NULL)

  [out] pac_out - Verified PAC (NULL if no PAC included)

retval:

  - 0 Success; otherwise - Kerberos error codes

If a PAC is present in enc_tkt , verify its signatures. If privsvr is not NULL and server_princ is not a krbtgt or kadmin/changepw service, require a ticket signature over enc_tkt in addition to the KDC signature. Place the verified PAC in pac_out . If an invalid PAC signature is found, return an error matching the Windows KDC protocol code for that condition as closely as possible.

If no PAC is present in enc_tkt , set pac_out to NULL and return successfully.

Note

This function does not validate the PAC_CLIENT_INFO buffer. If a specific value is expected, the caller can make a separate call to krb5_pac_verify_ext() with a principal but no keys.

Note

New in 1.20