Efficient transmission of cryptographic information in secure real time protocol

摘要

Efficient transmission of cryptographic information in secure real time protocol. A transmitting terminal may be used to encrypt data with a session key derived from a bit-stream. The bit-stream may be sent with header information to the receiving terminal. To conserve bandwidth, the information may be divided into portions, and each portion transmitted with an encrypted data packet. The receiving terminal may be used to recover the bit-stream from the information portions in the packet headers, and use the bit-stream to derive the session key. The session key may be used to decrypt the data.

主权项

1. A method of transmitting Master Key Identifier (MKI) information, comprising:
generating a session key from a bit-stream; encrypting payload data using the session key; generating MKI information including at least the bit-stream; dividing the MKI information into a plurality of portions; assembling a data packet containing one of the plurality of portions of the MKI information inserted into an MKI field of the data packet and at least a portion of the payload data encrypted by the session key; and transmitting the data packet including the one of the plurality of portions of the MKI information.