Computing the Internet checksum

Braden, Robert; Borman, David A.; Partridge, Craig

doi:10.17487/rfc1071

Cited by 71 publications

(43 citation statements)

References 3 publications

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“…The IP checksum is validated and recomputed at each hop using the Internet checksum algorithm-it is a 16-bit, one's complement sum of the data in the header [12]. This checksum is also used to validate the entire contents of packets at other protocol layers, notably TCP (the Transmission Control Protocol) and UDP (the User Datagram Protocol).…”

Section: Internet Router Architecturementioning

confidence: 99%

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A Design for an Internet Router with a Digital Optical Data Plane

et al. 2017

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This paper presents a complete design for an optical Internet router based on the component steps required for Internet protocol (IP) packet forwarding. Implementations of hop count decrement and header matching are integrated with a simulation-based approach to variable-length packet traffic merging that avoids recirculation, demonstrating an approach for an all-optical data plane. A method for IPv4 checksum computation is introduced, and this and previously designed components are extended from binary to higher-density (multiple bits per symbol) encodings. The implications of this design are considered, including the potential for chip-level and system integration, as well as the requirements of basic optical processing components.

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Section: Internet Router Architecturementioning

confidence: 99%

“…The IP checksum is a one's complement 16-bit sum of the 16-bit words of the IP header [12]. It is commonly implemented using commonly available two's complement adders, in which the high-order carry-out is wrapped around as the low-order carry-in.…”

Section: Optical Checksummentioning

confidence: 99%

A Design for an Internet Router with a Digital Optical Data Plane

et al. 2017

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“…A checksum is an error detection mechanism that is created by "summing up" all the bytes or words in a data word to create a checksum value, which is appended to the stored or transmitted data word [22,23]. The checksum of the retrieved data word is recomputed and compared with the received checksum value, as shown in Fig1.…”

Section: Checksum Technique (Cst)mentioning

confidence: 99%

An oblique-matrix technique for data integrity assurance

Ghaeb

Chebil

2009

Computers & Security

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Data integrity is insuring that the data retrieved is the same as the data stored or transmitted. It is an important aspect of storage security and reliability which are prerequisite for most computer system applications. This paper proposes a new technique for improving the detection of data integrity violations. The method is based on check determinant approach. Each block of data is arranged in a matrix form, and then into its corresponding oblique matrix. Because of the new arrangement in the block elements through the oblique matrix, a powerful error detection mechanism is obtained. Simulation results show that the new method outperforms the traditional techniques.

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“…These techniques append excess information about the data to use them in detecting the possibility of violation. A checksum is an error detection mechanism that is created by summing up all the bytes or words in a data word to create a checksum value, which is appended to the stored or transmitted data word [8,9]. The checksum of the retrieved data word is recomputed and compared with the received checksum value.…”

Section: Introductionmentioning

confidence: 99%