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checksum

shahroz malik answered on January 1, 2023 Popularity 10/10 Helpfulness 1/10

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  • checksum

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    Tip Shahroz malik 1 GREPCC
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    Contributed on Jan 01 2023
    shahroz malik
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    Tip Sumit Rawal 1 GREPCC

    A checksum is a string of characters consisting of numbers and letters. It acts as a fingerprint for files and messages and is used to ensure the file or message you have received is genuine and error free. To do so, you create a checksum of the file you have received and compare it to the checksum of the source file. Even the most minor of changes will result in a completely different checksum.

    For the scope of this course, we will be generating a checksum of a string.

    The ChecksumAccumulator Class

    The ChecksumAccumulator class has a single private field value sum, which is initialized to 0. It further has two methods, namely add, which is adding the bytes of a string, and checksum which is calculating the final checksum. checksum first uses the bitwise operator & with the final sum and the hexadecimal 0xFF. It then takes the result of the & operator and applies another bitwise operator to it ~. Finally, it adds a 1 to the result of the ~ operator, resulting in the final checksum value.

    Popularity 10/10 Helpfulness 2/10 Language scala
    Source: Grepper
    Tags: scala scal
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    Contributed on May 23 2023
    Sumit Rawal
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