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The International Data Encryption Algorithm (IDEA) is a symmetric block cipher developed in 1991 by Xuejia Lai and James Massey. This algorithm operates on 64-bit blocks using a 128-bit key and is known for its high resistance to cryptographic attacks. IDEA is based on a combination of mathematical operations-modular addition, modular multiplication and XOR-which are applied over 8.5 processing rounds. These operations allow even minute variations in the input data or key to generate significantly different results, resulting in robust cryptographic security. The structure of the algorithm follows a modified Feistel scheme, where the data block is split into parts, processed through several rounds of transformation, and re-combined to form the final cipher block. In addition, the generation of subkeys from the main key adds an extra layer of security. IDEA's success in cryptography is reflected in its implementation in critical applications, such as PGP (Pretty Good Privacy), where it is used to encrypt emails and secure electronic communications. Over the years, IDEA has proven effective against attacks such as differential and linear cryptanalysis, making it a secure option for data protection. Although new algorithms have emerged over time that have displaced IDEA in some applications, its design remains relevant and studied in modern cryptography. This article provides a detailed overview of IDEA's operation, its structure and its importance in the field of information security, highlighting its ability to provide secure and efficient encryption in a wide range of contexts. [ABSTRACT FROM AUTHOR]

The objective of this review was to examine the different biometric data encryption techniques or algorithms used in authentication for information security. Consequently, the PRISMA methodology was used to select articles in different databases during the period between 2019 and 2023. The databases used were SCOPUS, SCIELO and GOOGLE ACADEMICO, where when applying the proposed inclusion and exclusion criteria, they were considered 13 articles for this research. In this way, it was possible to notice the need to apply encryption algorithms as a form of attack prevention and aimed at meeting the objectives of information security, the most used being AES (Advanced Encryption Standard) and encryption chaotic. [ABSTRACT FROM AUTHOR]

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The international data encryption algorithm was described in 1991, it came to replace the DES algorithm, this algorithm has a much more adaptable security and consuming less technological resources than DES, it should be noted that for the development of this algorithm cryptography went through a fairly extensive development path, it should be noted that cryptography is based on mathematics and how this protects the information, besides this is always intended to improve existing protections or mix encryption technologies in this way to protect the data efficiently. [ABSTRACT FROM AUTHOR]

This paper provides an in-depth analysis of the history of DES and its successor Triple DES in the security market and secure data encryption. The different variations and improvements that have been proposed in research related to the uses of Triple DES since before it was approved as a standard for data encryption worldwide are studied. It is also important to mention that the proposals collected and analyzed are from different parts of the world, which solidifies the level of research carried out, due to the variety of sources found. In this way, the history of this algorithm is traced in order to provide the reader with a broad perspective on how it works and the different uses that have been made of it. Finally, it's determined that DES and 3-DES have been algorithms widely used in security information systems, but currently they are vulnerable to different attacks such as brute force and differential cryptanalysis, because of this it is suggested the use of other algorithms, for instance AES, or to include improvements in the DES and 3-DES implementation. [ABSTRACT FROM AUTHOR]

El artículo discute sobre la vulnerabilidad de la seguridad digital y la amenaza de la ciberdelincuencia. Destaca sobre las víctimas de ataques cibernéticos y el Mantenimiento de la información sensible y Ofrece consejos para protegerse, como usar contraseñas seguras, encriptar dispositivos y mantenerse alerta ante posibles amenazas.