Digital Rights Management in an information terminal

摘要

In a first terminal (TA) serving as rights assignment source, an encoding binding state of a key encoding key included in a rights object is converted from a bind using a binding key (K A ) of the first terminal (TA) and a bind using a domain key (K D ).
Then, the rights object including the thus bound converted key encoding key is transferred to a second terminal (TB) serving as rights assignment destination together with encoded content, and further, the above domain key (K D ) is transferred to the second terminal(TB) via a secure session.