Sharing ID Files between R5 and R3

05 Interoperability

Client
Sharing ID Files between R5 and R3

ID files are fully backwards and forwards compatible between R4 and R5. There are, however, certain R4 and R5 operations that render an ID file unreadable by R3 clients. The new operations in R5 are:

Adding recovery information so that the ID file can be recovered even if the user forgets the password
Adding Internet X.509 certificates to the ID file

If either of these operations is required for a user who still uses R3, a separate copy of the ID file should be kept for that purpose and that copy of the ID file should never be used with an R5 client.