Record Sequence Checking

A number known as a message digest generated from a hash function. Also . See hash function. Producing hash values for accessing data or for security. A hash value (or simply hash), also called a message digest, is a number generated from a string of text. The hash is substantially smaller than the text itself, and is generated by a formula in such a way that it is extremely unlikely that some other text will produce the same hash value. Hashing is also a common method of accessing data records. To create an index, called a hash table, for these records, you would apply a formula to each name to produce a unique numeric value.
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A government standard hash function developed by the National Institute of Standards and Technology (NIST) and specified in an official government publication. SHA-1 creates a 160-bit hash value output. Members of the SHA-2 family create a range of hash value outputs: 224, 256, 384 or 512. SHA-3 was still in development at the time of this writing, but the Keccak algorithm has been selected for that emerging standard.
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A piece of a packet. When a router is forwarding an IP packet to a network with a Maximum Transmission Unit smaller than the packet size, it is forced to break up that packet into multiple fragments. These fragments will be reassembled by the IP layer at the destination host. When a network receives a packet larger than its maximum allowable packet size, it breaks it up into two or more fragments. These fragments are each assigned a size (corresponding to the length of the fragment) and an offset (corresponding to the starting location of the fragment).
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A number that is generated from a string of text and that is substantially smaller than the text itself. A formula creates a hash value in such a way that it is extremely unlikely any other text will produce the same hash value.
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A computed value that depends on the contents of a packet. This value is sent along with the packet when it is transmitted. The receiving system computes a new checksum based on receiving data and compares this value with the one sent with the packet. If the two values are the same, the receiver has a high degree of confidence that the data was received correctly. Value computed on data to detect error or manipulation during transmission. (. See hash total. )
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