Performance Analysis Cryptography Using AES-128 and Key Ecnryption Based on MD5

Reza Arista Pratama; Eko Hari Rachmawanto; Candra Irawan; Lalang Erawan; Deddy Award Widya Laksana; Rabei Raad Ali

doi:10.14710/jmasif.16.2.75091

DOI: https://doi.org/10.14710/jmasif.16.2.75091

Performance Analysis Cryptography Using AES-128 and Key Ecnryption Based on MD5

Reza Arista Pratama¹, Eko Hari Rachmawanto¹

, Candra Irawan², Lalang Erawan², Deddy Award Widya Laksana³, Rabei Raad Ali⁴

¹Department of Informatics Engineering, Universitas Dian Nuswantoro, Indonesia

²Department of Informatics Systems, Universitas Dian Nuswantoro, Indonesia

³Department of Visual Communication Design, Universitas Dian Nuswantoro, Indonesia

⁴ Department of Computer Science, Northern Technical University, Iraq

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Received: 16 Jun 2025; Revised: 29 Jul 2025; Accepted: 31 Jul 2025; Published: 2 Aug 2025.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

BibTex Citation Data :

@article{JMASIF75091,
    author = {Reza Arista Pratama and Eko Hari Rachmawanto and Candra Irawan and Lalang Erawan and Deddy Award Widya Laksana and Rabei Raad Ali},
    title = {Performance Analysis Cryptography Using AES-128 and Key Ecnryption Based on MD5},
    journal = {Jurnal Masyarakat Informatika},
  volume = {16},
    number = {2},
    year = {2025},
    keywords = {Cryptography; AES; MD-5; file; execution time; Avalanche effect; Entropy;},
    abstract = {  The rampant misuse of data theft has created data security techniques in cryptography. Cryptography has several algorithms that are very strong and difficult to crack, including the AES (Advanced Encryption Standard) algorithm consisting of 128 bits, 192 bits, and 256 bits which have been proven resistant to conventional linear analysis attacks and differential attacks, then there is the MD-5 algorithm (Message-Digest algorithm 5) which is a one-way hash function by changing data with a long size and inserting certain data in it to be recovered. If the two are combined, it is more difficult to crack, therefore to determine its performance, this study conducted a combination experiment of AES-128 with a key encrypted by MD-5 with its avalanche effect test, encryption and decryption execution time, and entropy value of encryption. The types of documents for testing are files with the extensions .docx, .txt, .pptx, .pdf, and .xlsx. After conducting tests on document files obtained from the processing time test, it shows that .txt and .pptx documents dominate with a fast process, while the longest process is obtained by .xlsx and .docx documents for all test files, then the avalanche effect test with an average of 98% and the entropy test is classified as good between values 3 - 7 which are close to value 8. This proves that the combination of the AES - 128 algorithm with the MD-5 key can be used as an alternative in securing documents with stronger security with standard processing time.  },
   issn = {2777-0648},   pages = {216--228}  doi = {10.14710/jmasif.16.2.75091},
    url = {https://ejournal.undip.ac.id/index.php/jmasif/article/view/75091}
}

Citation Format:

Abstract

The rampant misuse of data theft has created data security techniques in cryptography. Cryptography has several algorithms that are very strong and difficult to crack, including the AES (Advanced Encryption Standard) algorithm consisting of 128 bits, 192 bits, and 256 bits which have been proven resistant to conventional linear analysis attacks and differential attacks, then there is the MD-5 algorithm (Message-Digest algorithm 5) which is a one-way hash function by changing data with a long size and inserting certain data in it to be recovered. If the two are combined, it is more difficult to crack, therefore to determine its performance, this study conducted a combination experiment of AES-128 with a key encrypted by MD-5 with its avalanche effect test, encryption and decryption execution time, and entropy value of encryption. The types of documents for testing are files with the extensions .docx, .txt, .pptx, .pdf, and .xlsx. After conducting tests on document files obtained from the processing time test, it shows that .txt and .pptx documents dominate with a fast process, while the longest process is obtained by .xlsx and .docx documents for all test files, then the avalanche effect test with an average of 98% and the entropy test is classified as good between values 3 - 7 which are close to value 8. This proves that the combination of the AES - 128 algorithm with the MD-5 key can be used as an alternative in securing documents with stronger security with standard processing time.

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Keywords: Cryptography; AES; MD-5; file; execution time; Avalanche effect; Entropy;

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Section: Research Article

Language : EN

In Vol 16, No 2 (2025): Issue in Progress

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