Browsing by Author "HINA ZAFAR"

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    AN ENCRYPTION SCHEME BASED ON LOGARITHMIC SQUARE POLYNOMIAL
    (UMT, Lahore, 2023) HINA ZAFAR
    In today's digital era, information is a valuable resource that is routinely transferred among many resources through various communication methods. Such information exchange, however, exposes the data to possible assaults and loss. A cipher algorithm is required to reduce such hazards. A substitution box is used in ciphers to produce chaos and safeguard information. This study describes a new cipher that uses a chaotic substitution box to improve data security. A substitution box is produced in this study utilizing trigonometric functions. The parameters of the substitution box are used to assess its robustness. A novel block cipher is also developed, which leverages the suggested substitution box to encrypt 128 bits of data. The cipher has 8 encryption rounds and requires 128 bits of key to accomplish multiple operations. For encryption, a new key is created for each cycle. Because of its chaotic behavior, the suggested substitution box is meant to give great complexity, and the cipher delivers a high degree of encryption standard. To validate the suggested cipher's efficacy, the created substitution box is assessed using several metrics, and the cipher is fully tested. The results show that the suggested cipher provides better data security than standard ciphers. The enhanced S-box and the suggested encryption technique work together to deliver increased security while preserving computing efficiency, demonstrating a substantial advancement in data protection paradigms.