Hier die Angaben von IBM:
What strength encryption does Lotus Notes and Domino support with release 5.0.4?
Anything over 512 bit RSA key and 56 bit symmetric key is considered strong encryption and was previously not allowed for export. With the availability of release 5.0.4, the Notes client and Domino will support 1024 bit RSA key and 128 bit symmetric key for S/MIME and SSL. The Notes proprietary protocols will use a 630 bit key for key exchange, and a 64 bit symmetric key.
Summary of Keys and Encryption for release 5.0.4
1024 bit RSA key in the web protocols (SSL and S/MIME)
128 bit encryption (SSL and S/MIME)
630 bit RSA key for Notes protocols *
64 bit encryption in the Notes protocols (mail, doc encryption, session encryption, etc)
* For International IDs, 630 bit encryption will be used for port encryption. International ID encryption for Notes Mail will remain at the 512 bit encryption strength for R5.0.4. Plans call for international ID mail encryption to achieve 630 bit strength in a future R5 release.
Quelle:
http://www-10.lotus.com/ldd/r5fixlist.nsf/0/3b4115cd7fc6ef1e85256cb80055a865?OpenDocumentAndreas