Methods and apparatuses for securely operating shared host computers with portable apparatuses

A system comprising:

• a computer-readable portable storage medium having at least one device dependent information and a guest portable operation system which is bound with the at least one device dependent information and is encrypted;
• the computer-readable portable storage medium further including a processor which is adapted to receive user dependent binding data to decrypt the guest portable operation system and to authenticate with the at least one device dependent information;
• a host computer adapted to create a guest operation environment from the decrypted and authenticated guest portable operation system;
• and
• wherein the guest operation environment provided by the guest portable operation system accommodates authorized use of intellectual property data from the computer readable portable storage medium.

A method of creating a connected-state guest operation environment on a host computer from a computer-readable portable storage medium comprising:

• loading a first set of instructions from the computer-readable portable storage medium onto a host computer using a loader program;
• receiving a password for the first set of instructions;
• decrypting at least one encrypted block in a logical information storage area of the computer-readable portable storage medium by a user dependent encryption key which is generated by the loader program executed in the host computer;
• loading a second set of instructions which are encrypted from a guest operation system in the computer-readable portable storage medium onto the host computer;
• decrypting the second set of instructions by the first set of instructions with the received password wherein the decrypted second set of instructions create a connected-state guest operation environment on the host computer;
• and
• authorizing use of intellectual property data from the computer-readable portable storage medium.