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ECES 212-81: Applied Cryptography Exam Prep
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ECES 212-81: Applied Cryptography Exam Prep

Master classical ciphers, AES, RSA, PKI, TLS, cryptanalysis, and post-quantum crypto for exam-focused preparation.
Created byAseem Mankotia
Last updated 10/2026
English

What you'll learn

  • Encrypt and cryptanalyze classical ciphers (Caesar, Vigenere, Playfair, Enigma-style)
  • Select the correct symmetric algorithm, key size, and cipher mode for a scenario
  • Build the modular arithmetic and number theory behind RSA, Diffie-Hellman, DSA, and ECC
  • Generate and evaluate RSA, Diffie-Hellman, and elliptic curve keys with OpenSSL

Course content

13 sections • 12 lectures • 3h 5m total length

  • Cryptography Foundations and Classical Ciphers16:00

Requirements

  • Working knowledge of security fundamentals (networking, OS basics, common attack types); no heavy math background required, the course builds the number theory it needs

Description

This course contains the use of artificial intelligence.

The EC-Council Certified Encryption Specialist (212-81) exam validates applied cryptography skills across classical ciphers, symmetric and asymmetric algorithms, PKI, TLS, cryptanalysis, and emerging post-quantum standards. This exam-focused preparation course, built and narrated by Aseem Mankotia, walks through all six ECES domains with hands-on labs using CrypTool, OpenSSL, Wireshark, hashcat, and NIST post-quantum reference tools, no fluff, just the commands, math, and scenarios the 212-81 exam tests.

Across 12 chapters you will build number theory from scratch, encrypt and break classical and modern ciphers, generate RSA and ECC keys, inspect X.509 certificates, capture a live TLS 1.3 handshake, crack password hashes, and evaluate NIST-standardized ML-KEM and ML-DSA post-quantum algorithms. Every chapter maps directly to an ECES exam domain, calls out heavily tested concepts and common wrong-answer traps, and ends with exam-style practice questions and explanations.

The final chapter is a full 120-minute, 50-question exam simulation with a domain-by-domain time-management plan so you walk into exam day with a rehearsed pacing strategy. Domain weights in this course are author estimates based on the published ECES module structure; EC-Council does not release official per-domain percentages, so confirm the current 212-81 exam outline, format, question count, duration, scoring, and fees on EC-Council's official ECES page before registering.

AI content disclosure: This course was produced with the assistance of artificial intelligence tools. Lecture narration is AI-voice generated, and lecture scripts, slides, and practice questions were drafted with AI assistance, then reviewed and curated by the instructor for technical accuracy and alignment with the official 212-81 exam guide.

Who this course is for:

  • Security engineers, penetration testers, SOC and security analysts, and developers who implement or evaluate cryptography and want to prove real applied-crypto depth. Assumes working security fundamentals; no heavy math background required. Complements the catalog's EC-Council CEH and the Security+, SecurityX, CISM, and CISA tracks by going deep specifically on cryptography.

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