This is a short, gentle two-part introduction to basic cryptographic concepts using text-based crypto examples. The videos illustrate encryption, decryption, ciphers, keys, algorithms, code cracking, cryptanalysis, and letter frequency analysis.  Full disclosure: I produced these videos over a decade ago. Now they are hosted directly on this web site. The technical details in the videos […]

*** This is a Security Bloggers Network syndicated blog from Cryptosmith authored by Rick. Read the original post at: https://cryptosmith.com/2025/09/02/grade-school-crypto-videos/