Cryptography
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What is Cryptography?
Cryptography is the practice and study of techniques for secure communication in the presence of adversaries. It involves converting readable data (plaintext) into an unreadable format (ciphertext) through encryption, and then converting the ciphertext back into plaintext through decryption. Cryptography uses algorithms and keys to ensure confidentiality, integrity, authentication, and non-repudiation of information.
Free resources to learn Cryptography
Cryptography: common questions
Can I learn Cryptography in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Cryptography in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Cryptography tutorial for beginners?
It is lesson 37 of 86 in the free Java roadmap, in stage 7, Cryptography. If you are new to Java, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.