Decrypt integrity check failed

[Christian]

Hello guys,

Using the sclient and sserver examples, I've added them the crypting
functionality with krb5_mk_priv / krb5_rd_priv. The client sends crypted
data to the server, which reads, decrypts and displays it, then the server
sends crypted data to the client which in turn reads, decrypts and displays
it.

Linux RH 7.2
Kerberos 1.2.6
Client and server programs run both on the machine.

The funny thing is that from time to time, the server gets the error
'Decrypt integrity check failed' when decrypting data sent by the client. I
can run these with no problem several times but sometimes, this error
arises.

Looking through FAQ, I've read that this error indicates that the key in the
keytab entry for the principal of the service was not the same as the one
stored in the KDC's database. But I guess that if so in my case, that would
never work, whereas it does most of the time.

Any idea ?

Thanks.

Christian.