Cryptography & Cyber Security (JCS-603) crash course, Online B.Tech, Semester 6:
Stream vs block ciphers (C4 + B4 + B6) and Diffie-Hellman with a worked example (C3, with totient/RSA basics) cover the crypto half; incident response…
- 5 video lessons
- 1h 10m
- Study notes
- 25 quiz questions
- Assignment
5 lessons in Cryptography & Cyber Security
Each lesson pairs one topic with a hand-picked video, trimmed to the part that teaches it.
About this subject
Stream vs block ciphers (C4 + B4 + B6) and Diffie-Hellman with a worked example (C3, with totient/RSA basics) cover the crypto half; incident response lifecycle (B2 + C2) is the easiest security-management long answer.
- 1
Symmetric ciphers: stream, block, substitution
Must study for the exam (×5 · A7, A8, B4, B6, C4 2+2+5+5+15 marks · MCQ, short notes, long comparison).
Stream and Block Cipher | Difference between Stream and Block Cipher· Abhishek Sharma· 11 min
Study notes 5 quiz questionsWatch lesson - 2
Public-key crypto: RSA, totient, Diffie-Hellman
Must study for the exam (×4 · A5, A6, B3, C3 2+2+5+15 marks · MCQ, definition, worked example).
RSA Algorithm in Cryptography and Network Security· Abhishek Sharma· 10 min
Study notes 5 quiz questionsWatch lesson - 3
Incident response
Must study for the exam (×2 · B2, C2 5+15 marks · definition, long diagram).
Incident Response Lifecycle | IR Plan | NIST SP 800-61 Security Incident Handling| Cybersecurity· CyberPlatter· 19 min
Study notes 5 quiz questionsWatch lesson - 4
Security fundamentals: CIA, threats
High value for the exam (×5 · A3, A4, A9, A10, B5 2+2+2+2+5 marks · MCQ, short note).
CIA Triad· Neso Academy· 16 min
Study notes 5 quiz questionsWatch lesson - 5
Network security operations: IDS/IPS, DMZ, SIEM, vulnerability mgmt
High value for the exam (×4 · A1, A2, B1, C1 2+2+5+15 marks · MCQ, short note, long diagram).
Overview of SIEM : Most Pratical Appraoch· Prabh Nair· 14 min
Study notes 5 quiz questionsWatch lesson
Assignment
JCS-603 Exam Practice Set: Ciphers, RSA/DH, and Security Operations
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Hand-picked video lessons
5 short lessons, each with the best YouTube explanation we could find, trimmed to the part that matters.
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Study notes
5 lessons come with a summary, key points, key terms and takeaways for quick revision.
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Quizzes
25 questions across the course, with the right answer and why, the moment you pick.
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Assignments
1 subject assignments with clear tasks, so you practise what each subject actually asks of you.
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Notebook
Write notes beside the video, stamped with the exact time, and jump back to that moment later.
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Progress that follows you
Completed lessons, quiz scores and where you stopped, saved to your account on every device.
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Live chat
A members-only live chat beside every lesson: doubts, tips, stickers and GIFs with your batch. One ₹19 pass opens every live chat.
The Online B.Tech live chat. Study together, live.
A live chat right beside the video, shared by everyone studying Online B.Tech. Ask a Cryptography & Cyber Security doubt mid-lesson, share a shortcut, celebrate a finished semester.
- Live chat beside every lesson
- One live chat for all of Online B.Tech
- Members-only stickers & GIFs
- One ₹19 pass opens every live chat
Online B.Tech live chat
Anyone else finding Cryptography & Cyber Security tricky? 😅
Lesson 2 cleared it up for me. Watch it before the quiz
Doing it now, thanks!
Starting Sociology, Society and Culture tonight if anyone wants to go together
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Cryptography & Cyber Security: common questions
Stream vs block ciphers (C4 + B4 + B6) and Diffie-Hellman with a worked example (C3, with totient/RSA basics) cover the crypto half; incident response lifecycle (B2 + C2) is the easiest security-management long answer. It's the Cryptography & Cyber Security subject of Online B.Tech, Semester 6, in 5 lessons: Symmetric ciphers: stream, block, substitution; Public-key crypto: RSA, totient, Diffie-Hellman; Incident response; Security fundamentals: CIA, threats; Network security operations: IDS/IPS, DMZ, SIEM, vulnerability mgmt.
Yes. Every video lesson is free to watch without an account. A free login unlocks study notes, quizzes, the assignment, a notebook and progress that syncs across devices.
About 1h 10m of video across 5 lessons, plus time for notes and quizzes. Go at your own pace; your place is saved.
Yes: “JCS-603 Exam Practice Set: Ciphers, RSA/DH, and Security Operations”. It comes after the last lesson, with a brief, clear tasks and how the work is judged.
A members-only live chat beside the video, shared by everyone studying Online B.Tech, where learners ask doubts, share tips and react with stickers and GIFs. One ₹19 pass, paid once from your InsideEdge wallet, opens the live chat for every degree.
No. It's a crash course to help you understand and revise the subject quickly. Use it alongside your official study material and assignments.