ダークネットのはなし #ssmjpThe document summarizes cryptography techniques such as hashing functions, MAC, digital signatures, and FIDO authentication. It discusses SHA-2 and SHA-3 hashing standards, how MAC provides data integrity while signatures provide non-repudiation. ECDSA is introduced as an elliptic curve digital signature algorithm. FIDO aims to standardize multi-factor authentication using authentication devices a
