5 Questions
¿Cuál es el nombre del cifrado que desplaza cada letra del texto plano un número determinado de posiciones en el alfabeto?
Cifrado de César
¿Qué habilidades se desarrollan al estudiar criptografía?
Pensamiento crítico, resolución de problemas y habilidades analíticas
¿Por qué es fácil romper el Cifrado de César?
Porque se puede descifrar mediante análisis de frecuencia o probando todos los desplazamientos posibles
¿Qué estudio se relaciona con la criptografía en la educación?
Matemáticas, ciencia de la computación e historia
¿Qué tipos de criptogramas existen?
Todos los anteriores
Study Notes
Cryptography Algorithms
Symmetric Key Algorithms
- Use the same secret key for encryption and decryption
- Examples:
- AES (Advanced Encryption Standard)
- DES (Data Encryption Standard)
- Blowfish
Asymmetric Key Algorithms
- Use a pair of keys: public key for encryption and private key for decryption
- Examples:
- RSA (Rivest-Shamir-Adleman)
- Elliptic Curve Cryptography (ECC)
Block Ciphers
- Encrypt data in fixed-size blocks
- Examples:
- AES (Advanced Encryption Standard)
- DES (Data Encryption Standard)
Stream Ciphers
- Encrypt data in a continuous stream
- Examples:
- RC4 (Rivest Cipher 4)
- FISH (Fast and Instruction-Set Independent Hash)
Hash Functions
Properties
- Deterministic: same input produces same output
- Non-invertible: cannot retrieve original input from output
- Fixed output size: regardless of input size
- Collision-resistant: difficult to find two different inputs with the same output
Types
-
Cryptographic Hash Functions: designed to be secure and collision-resistant
- Examples: SHA-256, SHA-512, MD5
-
Non-Cryptographic Hash Functions: designed for speed and simplicity, not secure
- Examples: CRC32, FNV-1a
Applications
- Data integrity: verify data has not been tampered with
- Password storage: store passwords securely
- Digital signatures: authenticate message sender and ensure integrity
Test your knowledge of cryptography concepts, including symmetric and asymmetric key algorithms, block and stream ciphers, and hash functions. Learn about properties, types, and applications of cryptography and assess your understanding of cryptographic principles.
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