Systems and methods for performing transport I/O
First Claim
1. A removable secure device comprising:
- at least one processor; and
memory encoding computer executable instructions that, when executed by the at least one processor, perform a method comprising;
receiving data from a host device, wherein the removable secure device is operable to be physically coupled to the host device, and wherein the removable secure device is capable of operating in an ISO-7816 compliant legacy mode;
storing the received data in a buffer resident on the removable secure device;
monitoring the buffer using the removable secure device;
determining whether a number of packets queued in the buffer is below a threshold; and
when the number of packets queued in the buffer is below the threshold, sending a signal to trigger the receipt of additional data packets from the host device.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods for implementing a Transport I/O system are described. Network encrypted content may be received by a device. The device may provide the network encrypted content to a secure processor, such as, for example, a smart card. The secure processor obtains a network control word that may be used to decrypt the network encrypted content. The secure processor may decrypt the network encrypted content to produce clear content. In embodiments, the secure processor may then use a local control word to generate locally encrypted content specific to the device. The device may then receive the locally encrypted content from the secure processor and proceed to decrypt the locally encrypted content using a shared local encryption key. The Transport I/O system ensures the protection of the network control word by maintaining the network control word on the secure processor.
520 Citations
20 Claims
-
1. A removable secure device comprising:
-
at least one processor; and memory encoding computer executable instructions that, when executed by the at least one processor, perform a method comprising; receiving data from a host device, wherein the removable secure device is operable to be physically coupled to the host device, and wherein the removable secure device is capable of operating in an ISO-7816 compliant legacy mode; storing the received data in a buffer resident on the removable secure device; monitoring the buffer using the removable secure device; determining whether a number of packets queued in the buffer is below a threshold; and when the number of packets queued in the buffer is below the threshold, sending a signal to trigger the receipt of additional data packets from the host device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20)
-
-
10. A method comprising:
-
receiving, at a removable secure device, data from a host device, wherein the secure device is operable to be physically coupled to the host device, and wherein the secure device is capable of operating in an ISO-7816 compliant legacy mode; storing the received data in a buffer resident on the removable secure device; monitoring the buffer using the secure device; determining whether a number of packets queued in the buffer is below a threshold value; and when the number of packets queued in the buffer is below the threshold value, sending a signal to trigger the receipt of additional data packets from the host device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. A computer storage medium comprising computer executable instructions that, when executed by at least one processor, perform a method comprising:
-
receiving, at a removable secure device, data from a host device, wherein the secure device is operable to be physically coupled to the host device, and wherein the secure device is capable of operating in an ISO-7816 compliant legacy mode; storing the received data in a buffer resident on the removable secure device; monitoring the buffer using the secure device; determining whether a number of packets queued in the buffer fall below a threshold value; and when the number of packets queued in the buffer fall below the threshold value, sending a signal to trigger the receipt of additional data packets from the host device. - View Dependent Claims (19)
-
Specification