Hoy en día es más que usual ver noticias en medios sobre fallos de seguridad, filtraciones, hackeos de cuentas (que suelen ser causas de fallos de la plataforma o del uso de contraseñas predecibles), etc. ¿Cómo puedo saber yo qué seguridad tengo respecto a mis datos, mis cuentas o mis comunicaciones? ¿Cómo sé si tengo una buena contraseña o no?. En esta serie de entradas sobre seguridad online / ciberseguridad comenzaremos con uno de los aspectos básicos de la seguridad en comunicación: el cifrado y la seguridad con GPG.
El primer paso en la privacidad y seguridad de las comunicaciones es milenios anterior a la creación de Internet. Se suele decir que Julio César fue el creador del método que lleva su nombre de cifrado. Este método se que usó en sus campañas en las galias para evitar que los mensajes interceptados pudieran revelar información a la coalición de tribus galas. Para esconder el mensaje lo que hacía era “adelantar” las letras de tal forma que con un “adelanto” de 3 a la letra A le corresponde la D, a la B la E y así sucesivamente. De tal manera que el mensaje “HOLA” se transforma en “KRÑD” siguiendo el alfabeto español.
Publicado por Rafael
Graduado en Física y docente en Educación Secundaria. En el Máster en Formación del Profesorado comenzó en la investigación en la Didáctica de las Ciencias Experimentales. Cuenta con comunicaciones y artículos publicados sobre su trabajo predoctoral. Ha colaborado en diversas iniciativas de divulgación científica y astronomía aficionada.
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