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  1. Cryptography - Wikipedia

    Cryptography prior to the modern age was effectively synonymous with encryption, converting readable information (plaintext) to unintelligible nonsense text (ciphertext), which can only be read by …

  2. What is cryptography? - IBM

    Cryptography is the practice of developing and using coded algorithms to protect and obscure transmitted information so that it may only be read by those with the permission and ability to decrypt it.

  3. Cryptography and its Types - GeeksforGeeks

    Dec 12, 2025 · Cryptography is the science of protecting information using mathematical techniques to ensure confidentiality, integrity, and authentication. It transforms readable data into unreadable form, …

  4. Cryptography Tutorial - GeeksforGeeks

    Jul 23, 2025 · Cryptography is a technique of securing communication by converting plain text into unintelligible ciphertext. It involves various algorithms and protocols to ensure data confidentiality, …

  5. cryptography · PyPI

    cryptography includes both high level recipes and low level interfaces to common cryptographic algorithms such as symmetric ciphers, message digests, and key derivation functions.

  6. Cryptography | Computer science theory | Computing | Khan Academy

    Cryptography challenge 101 Ready to try your hand at real-world code breaking? This programming challenge contains a beginner, intermediate, and advanced level. See how far you can go!

  7. Welcome to pyca/cryptographyCryptography 47.0.0.dev1 …

    cryptography includes both high level recipes and low level interfaces to common cryptographic algorithms such as symmetric ciphers, message digests, and key derivation functions.

  8. What is Cryptography? Definition, Types and Techniques | TechTarget

    Mar 13, 2024 · In computer science, cryptography refers to secure information and communication techniques derived from mathematical concepts and a set of rule-based calculations called …

  9. A History of Cryptography From the Spartans to the FBI

    Feb 20, 2025 · Cryptography, the art of encoding and decoding secrets, dates back to ancient Greece. The term itself comes from the Greek word for “hidden writing,” and its origins trace back to the …

  10. Cryptography | Encryption, Security & Privacy | Britannica

    Nov 6, 2025 · Cryptography, Practice of the enciphering and deciphering of messages in secret code in order to render them unintelligible to all but the intended receiver. Cryptography may also refer to the …