Tagged: `symmetric`

2 entries

AES (Advanced Encryption Standard)Glossary · AES is the standardized symmetric block cipher; Grover's algorithm gives only a quadratic speedup, so a 256-bit key preserves the post-quantum margin.
Symmetric cryptographyGlossary · Symmetric cryptography uses one shared key, as in AES; quantum attacks give only a quadratic speedup, so larger keys preserve the security margin.