37 results about "Request for Comments" patented technology

Methods for cryptographic synchronization of data packets. A roll-over counter (ROC) value is periodically appended to and transmitted with a data packet when a function of the packet sequence number equals a predetermined value. The ROC effectively synchronizes the cryptographic transformation of the data packets. Although the disclosed methods are generally applicable to many transmission protocols, they are particularly adaptable for use in systems wherein the data packets are transmitted to a receiver using the Secure Real-Time Transport Protocol (SRTP) as defined in Internet Engineering Task Force (IETF) Request for Comments (RFC) 3711.

A method for transmitting content in a call established via media gateway control protocol includes: encrypting an RFC, Request for Comment, 2833 message with a first key; and sending out the encrypted RFC2833 message. The key used for encryption and decryption may be configured in advance on a calling and a called media gateways, or be sent from a soft switch device once and for all, or be sent from the soft switch device every time when a call is initiated. The key sent from the soft switch device may be in clear text or be encrypted. The technical scheme of the present invention greatly improves the security of the content in the RFC2833 protocol transmission.

The invention discloses a formalization detection method for a malicious URL (uniform resource locator). The formalization detection method comprises the following steps of: splitting the URL to be detected into syntactic element character strings according to a URL syntactic structure on the basis of the standard of RFC (request for comments); extracting designated character strings from the character strings obtained by splitting; performing completing treatment on the non-existent character strings; reordering the character strings obtained after completing treatment to obtain a new URL, and calculating the hash value of the new URL; and traversing a malicious URL feature library, and performing contrast detection on feature data in the malicious URL feature library and the hash value of the URL to be detected. The invention further discloses a formalization detection system for the malicious URL. The technical scheme disclosed by the invention can be effectively used against the variability in the formats of the URL; and compared with the traditional URL detection method, the detection rate against the malicious URL which often changes the format is higher, and a single feature can also be adopted for corresponding to multiple format variants of the malicious URL, so that the volume of a virus feature library required for the detection method is smaller, and the space of a memory and a magnetic disk can be further saved.

The invention discloses a method for realizing PIM multicast in a VRRP network environment, by carrying a virtual IP address when sending a PIM Hello message on an interface enabled with VRRP, and using VRRP when receiving the PIM Hello message The establishment of PIM neighbors with virtual IP addresses can enable unicast and multicast services to be active and standby at the same time in the VRRP network environment. At the same time, it is fully compatible with the current RFC protocol, which solves the problem that VRRP and multicast cannot be deployed at the same time. At the same time, it also discloses a device for realizing PIM multicast in a VRRP network environment, including a sending module and a receiving module. The router of the packet establishes a PIM neighbor relationship with a real address or a virtual IP address. The invention has simple protocol and flexible deployment, can realize the co-deployment of VRRP and multicast, and allows active and standby of unicast and multicast at the same time.

Embodiments of the present invention provide an interaction method and user equipment. A method includes: receiving a first content tag of a content being displayed by a display device; sending a comment request, the comment request being associated with the first content tag; and receiving at least one comment on the content. The embodiment of the present invention provides an interaction solution, so that a user can request to obtain other users' viewpoints or views on the content while watching a content.