摘要:
A protocol delay measuring device (100) for preventing an increase of the processing overhead of a communication terminal attributed to a protocol delay measurement. The protocol delay measuring device (100) determines the protocol delay by using first and second timestamps created respectively before and after a processed packet is obtained from an unprocessed packet by IPsec processing by the communication terminal. An acknowledging section (104) creates an identifier of the unprocessed packet. A timestamp database (106) stores the created identifier along with the first timestamp and writes the identifier in a storage area where the identifier is kept the same before and after the IPsec processing by the communication terminal. A correlating section (108) reads the identifier from the storage area and extracts the first timestamp stored along with the same identifier as the read identifier in the timestamp database (106). A calculating section (110) calculates the difference between the extracted first timestamp and the second timestamp as the protocol delay.
摘要:
A protocol delay measuring device prevents an increase of the processing overhead of a communication terminal attributed to a protocol delay measurement. The measuring device determines the protocol delay by using first and second timestamps created respectively before and after a processed packet is obtained from an unprocessed packet by IPsec processing by the communication terminal. An acknowledges creates an identifier of the unprocessed packet. A timestamp database stores the created identifier along with the first timestamp and writes the identifier in a storage where the identifier is kept the same before and after the IPsec processing by the communication terminal. A correlator reads the identifier from the storage and extracts the first timestamp stored along with the same identifier as the read identifier in the timestamp database. A calculator calculates the difference between the extracted first timestamp and the second timestamp as the protocol delay.
摘要:
Provided is an encryption processing device which can effectively improve an encryption processing performance of a secure multi-media communication. The encryption processing device (100) includes: storage means (162) which stores secure processing information containing an identification condition for identifying a packet requiring an encryption/decryption process or an authentication process; transmission means (112) which transmits a multi-media packet in a plain text to a virtual network interface (140); correction means (160) which executes an encryption process or an authentication process on the multi-media packet if the multi-media packet coincides with the identification condition and corrects the payload of the secure multi-media packet so as to be matched with a security protocol; and replacement means (130) which transfers the secure multi-media packet transmitted to the virtual network interface (140) to an inherent network interface (150).
摘要:
A secure communication device for high-speed encryption/decryption authentication including network stack processing. An encryption/decryption authentication controller of the secure communication device acquires the result of processing of the encrypted/decrypted or authenticated previous packet from an encryption/decryption authenticator and controls a network protocol processor so that the second half of the processing of the network protocols of the previous packet and the first half of the processing of the network protocols of the current packet are continuously performed.
摘要:
A secure communication device for high-speed encryption/decryption authentication including network stack processing. An encryption/decryption authentication control unit (340) of the secure communication device (300) acquires the result of processing of the encrypted/decrypted or authenticated previous packet from an encryption/decryption authentication unit (350) and controls a network protocol processing unit (320) so that the second half of the processing of the network protocols of the previous packet and the first half of the processing of the network protocols of the current packet are continuously performed.
摘要:
A TCP transmission control device enables high-efficiency TCP transmission for appliance integrated service provided via a home network. A TCP destination cache control unit (206) of a transmitting terminal (200) serving as the TCP transmission control device sets TCP transmission control information used for TCP connection set up, for an internal packet network, between the transmitting terminal (200) and a receiving terminal when the receiving terminal is present in the internal packet network. The TCP destination cache control unit (206) sets the TCP transmission control information according to the type of the service realized by TCP data transmission.
摘要:
A portable information processor wherein a menu to be easily used by a user is displayed on a relatively small screen. The portable information processor is provided with an installation section (12) for installing a program; a category information acquiring section (13) which acquires category information displaying a category of a new program upon further installation of the new program; and a category judging section (15) which compares the category of the new program indicated by the category information acquired by the category information acquiring section (13) with categories of a plurality of existing programs and judges whether the category of the new program overlaps any of the categories of the existing programs upon installation of the new program.
摘要:
An information processor (100) for information processing in a terminal having a plurality of image screens and has a transient state decision unit (130) that determines whether or not a terminal has shifted to a transient state between a first state and a second state from the first state in which a plurality of image screens is set in a first arrangement, or the second state in which a plurality of image screens is set in a second arrangement, and a display application decision unit (140); that causes the terminal to shift to an application decision operating mode that operates to determine one or a plurality of applications for successively showing a plurality of image screens from the normal operating mode that operates one or a plurality of applications for displaying a plurality of image screens under the condition that the terminal has shifted to the transient state.