{"id":24445154,"url":"https://github.com/brosgor/hill-cipher","last_synced_at":"2025-03-14T04:10:09.993Z","repository":{"id":251675077,"uuid":"838098199","full_name":"brosgor/hill-cipher","owner":"brosgor","description":null,"archived":false,"fork":false,"pushed_at":"2024-08-13T15:26:29.000Z","size":22923,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-01-20T23:14:07.688Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Python","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/brosgor.png","metadata":{"files":{"readme":"readme.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2024-08-04T23:40:38.000Z","updated_at":"2024-08-13T15:26:32.000Z","dependencies_parsed_at":"2024-11-19T19:53:37.102Z","dependency_job_id":null,"html_url":"https://github.com/brosgor/hill-cipher","commit_stats":null,"previous_names":["lpedraoss/hill-cipher","brosgor/hill-cipher"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brosgor%2Fhill-cipher","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brosgor%2Fhill-cipher/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brosgor%2Fhill-cipher/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/brosgor%2Fhill-cipher/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/brosgor","download_url":"https://codeload.github.com/brosgor/hill-cipher/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":243521281,"owners_count":20304186,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-01-20T23:14:23.547Z","updated_at":"2025-03-14T04:10:09.965Z","avatar_url":"https://github.com/brosgor.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"El cifrado Hill es un tipo de cifrado por bloques basado en álgebra lineal. Fue inventado por Lester S. Hill en 1929. Utiliza matrices y vectores para cifrar y descifrar mensajes. Aquí tienes una descripción general de cómo funciona:\n\n### Cifrado Hill\n\n1. **Clave**: Se elige una matriz cuadrada \\( K \\) de tamaño \\( n \\times n \\) como clave. Esta matriz debe ser invertible en el módulo del tamaño del alfabeto (por ejemplo, 26 para el alfabeto inglés).\n\n2. **Texto en claro**: El mensaje se divide en bloques de tamaño \\( n \\). Si el último bloque es más pequeño que \\( n \\), se puede rellenar con caracteres adicionales.\n\n3. **Cifrado**:\n   - Cada bloque de texto en claro se convierte en un vector de números usando un diccionario de letras a índices.\n   - Se multiplica el vector por la matriz clave \\( K \\) y se toma el resultado módulo 26.\n   - El vector resultante se convierte de nuevo en letras usando el diccionario de índices a letras.\n\n4. **Descifrado**:\n   - Se calcula la inversa de la matriz clave \\( K \\) en módulo 26.\n   - Cada bloque cifrado se convierte en un vector de números.\n   - Se multiplica el vector por la matriz inversa y se toma el resultado módulo 26.\n   - El vector resultante se convierte de nuevo en letras.\n\n### Ejemplo de Cifrado Hill en Python\n\nVoy a mostrarte un ejemplo simple de cifrado y descifrado Hill en Python:\n\n#### Pseudocódigo:\n1. Definir la matriz clave y su inversa.\n2. Crear funciones para convertir texto a vectores y viceversa.\n3. Implementar las funciones de cifrado y descifrado.\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbrosgor%2Fhill-cipher","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fbrosgor%2Fhill-cipher","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbrosgor%2Fhill-cipher/lists"}