Users for logging on to receiver systems

Hi,

The user name and the password that the IS needs for logging on to a receiver system to deliver a message are kept in the database of the Integration Directory and cached in the IS.

According to the documentation, the passwords are stored in the secure store of the directory server and in an obfuscated form in the persistent cache on the IS.

Anyone knows what mechanisms are used to make the secure store of the directory server secure?

And does any of you know in what form are the passwords stored in the IS cache? (I suppose that means what hashing algorithms are used?)

Thanks,

Greg