A Novel Approach of Text Encryption Using Random Numbers and Hash Table
| Autor: | Nirmalya Kar, Abhilash Kumar Das |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Communications in Computer and Information Science ISBN: 9789813368347 ACeS |
| Popis: | In modern days, word files are used to carry out information storage and other multiple operations. The word file allows the users to write valuable text and information in plain text format. When such documents unknowingly falls in the wrong hands. Stealing of that valuable data is obvious. To prevent such situation, this paper proposes a cryptographic technique which uses random key values to generate ciphertext in the docx file itself. Then it uses inverted hash table to translate this ciphertext numbers into hash values. A hash table is re-created at the receiver side. In the whole process a key = (a, b) along with the hash key = (h) is transmitted to the receiver for decryption. The key values are generated by Random Key Generator (RKG) which uses a table to generate random key values based on the initial seed values. During decryption same sequence of key values are generated. The hash table translates the hash values into ciphertext numbers and then returns back the original plain text. The strength of the cryptosystem has been analyzed on various criteria and parameters which gave very promising results. |
| Databáze: | OpenAIRE |
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