An Improved Data Encryption Standard to Secure Data Using Smart Cards. - Ariel M. Sison; Bartolome T. Tanguilig III; Bobby D. Gerardo; Yung-Cheol Byun (SERA, 2011)

Data Extraction Using Preprocessing Compression Based on LZW to Improve DB Performance. - Bartolome T. Tanguilig III; Ariel M. Sison; Bobby D. Gerardo; Yung-Cheol Byun (SERA, 2011)

Enhanced RC6 permutation-diffusion operation for image encryption. - Catherine Bhel B. Aguila; Ariel M. Sison; Ruji P. Medina (DSIT, 2018)

Application of enhanced expectation maximization (EnEM) algorithm for image segmentation. - Maria Lolita G. Masangcap; Ariel M. Sison; Ruji P. Medina (DSIT, 2018)

An MD5-Hirose Hashing Algorithm for Digital Image Watermarking. - Florence Jean B. Talirongan; Ariel M. Sison; Ruji P. Medina (ICIT, 2018)

A New Advanced Encryption Standard-Butterfly Effect in Protecting Image of Copyright Piracy. - Hidear Talirongan; Ariel M. Sison; Ruji P. Medina (ICIT, 2018)

Implementation of GA-Based Feature Selection in the Classification and Mapping of Disaster-Related Tweets. - Ian P. Benitez; Ariel M. Sison; Ruji P. Medina (NLPIR, 2018)

A Hybrid Prediction Model Integrating a Modified Genetic Algorithm to K-means Segmentation and C4.5. - Markdy Y. Orong; Ariel M. Sison; Ruji P. Medina (TENCON, 2018)

A New Approach in Expanding the Hash Size of MD5. - Esmael Verano Maliberan; Ariel M. Sison; Ruji P. Medina (Int. J. Commun. Networks Inf. Secur., 2018)

Bandwidth Allocation Mechanism based on Users' Web Usage Patterns for Campus Networks. - Rolysent Paredes; Ariel M. Sison; Ruji P. Medina (Int. J. Commun. Networks Inf. Secur., 2018)

Application of the Modified Imputation Method to Missing Data to Increase Classification Performance. - Elenita T. Capariño; Ariel M. Sison; Ruji P. Medina (ICCCS, 2019)

An Enhanced Recommendation Algorithm Based on Modified User-Based Collaborative Filtering. - Ramil G. Lumauag; Ariel M. Sison; Ruji P. Medina (ICCCS, 2019)

ERC5a - An Enhanced RC5 Algorithm on Bit Propagation in the Encryption Function. - Jayvee Christopher N. Vibar; Ruji P. Medina; Ariel M. Sison (ICCCS, 2019)

Performance Analysis of the Modified Generated S-Box for Advanced Encryption Standards. - Ronielle B. Antonio; Ariel M. Sison; Ruji P. Medina (DSIT, 2019)

Centroid 360: An Enhanced Centroid Initialization Method for K Means Algorithm. - Jovy Jay D. Cabrera; Ariel M. Sison; Ruji P. Medina (DSIT, 2019)

A Modified Least Significant Bit Randomized Embedding Method based on Image Partitioning and Columnar Transposition with Encryption. - Fredilyn B. Calanda; Ariel M. Sison; Mark Rennel D. Molato; Ruji P. Medina (ICCBD, 2019)

GISKOP: A Modified Key Scheduling Operation of International Data Encryption Algorithm using Serpent Key Scheduling. - Gerald T. Cayabyab; Ariel M. Sison; Alexander A. Hernandez (ICCBD, 2019)

A Secure Key Scheduling Operation for International Data Encryption Algorithm using Serpent Key Schedule Operation. - Gerald T. Cayabyab; Ariel M. Sison; Ruji P. Medina (ICCBD, 2019)

Handling Imbalanced Data through Affinity Propagation and SMOTE. - Lanie B. Laureano; Ariel M. Sison; Ruji P. Medina (ICCBD, 2019)

A Secured RFID Lightweight Authentication Protocol based on Elliptic Curve Cryptography using modified PRNG Algorithm. - Domingo V. Origines Jr.; Ariel M. Sison; Ruji P. Medina (ICCBD, 2019)

Enhanced key generation algorithm of hashing message authentication code. - Enrique G. Abad; Ariel M. Sison (ICCSP, 2019)

An XBOX-based key generation technique for vigenere algorithm. - Daniel A. Neri; Ruji P. Medina; Ariel M. Sison (ICCSP, 2019)

Multidimensional key RC6 algorithm. - Rommel Evan J. Paje; Ariel M. Sison; Ruji P. Medina (ICCSP, 2019)

Jumbled passsteps: a hotspot guessing attack resistant graphical password authentication scheme based on the modified passmatrix method. - Jerome P. Songcuan; Ariel M. Sison (ICCSP, 2019)

Implementation of Enhanced MD5 Algorithm using SSL to Ensure Data Integrity. - Larry B. de Guzman; Ariel M. Sison; Ruji P. Medina (ICMLSC, 2019)

An Enhanced Key Security of Playfair Cipher Algorithm. - Richard M. Marzan; Ariel M. Sison (ICSCA, 2019)

Implementation and Performance Assessment of Enhanced RC5 Cryptosystem Applied to Different File Types. - Jayvee Christopher N. Vibar; Ariel M. Sison; Ruji P. Medina (ICSET, 2019)

Modifying Bit-Level Data Compression Scheme based on Adaptive Hamming Code Data Compression Algorithm. - Harwin C. Mendoza; Ariel M. Sison; Ruji P. Medina (MAPR, 2019)

Extended PrefixSpan for Efficient Sequential Pattern Mining in a Game-based Learning Environment. - Raymond S. Bermudez; Ariel M. Sison; Ruji P. Medina (APIT, 2020)

Cryptanalysis of the Modified SHA256. - Dan Michael A. Cortez; Ariel M. Sison; Ruji P. Medina (HPCCT/BDAI, 2020)

Cryptographic Randomness Test of the Modified Hashing Function of SHA256 to Address Length Extension Attack. - Dan Michael A. Cortez; Ariel M. Sison; Ruji P. Medina (ICCBN, 2020)

Multilayer Security for Facial Authentication to Secure Text Files. - Jeffrey Tagoc; Ariel M. Sison; Ruji P. Medina (IntelliSys (3), 2021)

Enhancing Data Security with RSA-SHA 256: Mitigating Timing Attacks. - Dominador Montante Acasamoso; Ariel M. Sison; Ruji P. Medina (ICTC, 2024)

Optimizing AES-256 with Keccak Permutations: Achieving High Security and Performance with Reduced Rounds. - Ma. Esther B. Chio; Ariel M. Sison; Ruji P. Medina (ICTC, 2024)

Enhancing RSA with Modified RC4 Using Optimize Symmetric Random Function Generator. - Paul Joseph M. Estrera; Ariel M. Sison; Ruji P. Medina (ICTC, 2024)

CryptoStego: Enhancing RSA with Optimize RC4 for Audio Steganography. - Paul Joseph M. Estrera; Ariel M. Sison; Ruji P. Medina (ICTC, 2024)

Optimizing Feature Extraction with Multi-Variant Bidirectional PCA for 2D Image Analysis. - Jocelyn L. Garrido; Ariel M. Sison; Ruji P. Medina (ICTC, 2024)