Symmetric Encryption
What is Symmetric Encryption?
An encryption method that uses the same key for both encrypting and decrypting data. Symmetric algorithms such as AES are fast and efficient but require secure key exchange between communicating parties.
Frameworks that govern symmetric encryption
What the standards actually require on symmetric encryption
Requirements naming symmetric encryption across 5 standards, quoted from the control text.
The Advanced Encryption Standard (FIPS 197) is the symmetric block cipher for information protection, used with 256-bit keys to protect information up to TOP SECRET: CNSSP 15 Annex B lists it among the general purpose algorithms, as the 2022 advisory did.
commercial-national-security-algorithm-suite-cnsa-2-0::ALG-AES · ALG-AES AES-256 for symmetric encryption at all classification levels →Native mode uses the algorithm families the part names: public-key algorithms for authentication and key agreement, hash and signature algorithms, symmetric encryption used only for confidentiality, authenticated encryption algorithms, and integrity check valu...
iec-62351-power-systems-communication-security::4:8 · Part 4, clause 8: use of cryptographic algorithms (public-key, hash, signature, symmetric encryption, authenticated encryption, integrity check value) →Agencies using approved symmetric encryption algorithms such as AES should not operate them in Electronic Code Book (ECB) mode.
new-zealand-information-security-manual-nzism::17.2.28.C.01 · 17.2.28.C.01 Avoid ECB mode for symmetric encryption →Security Dimensions 4 and 5 per X.805 Clauses 6.4 and 6.5 are closely related: (1) Data Confidentiality (Dim 4) protects data from unauthorized disclosure - so that anyone without authorization is unable to make sense of the content.
X805-Dim4-5-Data-Confidentiality-Communication-Security-Encryption-Information-Flow-Protection · ITU-T X.805 Security Dimensions 4-5 - Data Confidentiality + Communication Security + Encryption At-Rest + In-Transit + In-Use + Information Flow Protection + Steered Communication + Anti-Tap + Anti-Eavesdrop + Post-Quantum Cryptography →For almost all protocols the main recommendation is a hybrid approach in which a well-established algorithm and a post-quantum algorithm are used together within one protocol, so that an attacker must break both;
netherlands-pqc-migration-handbook-aivd-cwi-tno-2nd-edition-2024::HYBRID · Deploy PQC in hybrid combinations and guard against downgrade →Questions people ask about symmetric encryption
What is Symmetric Encryption?
Why is Symmetric Encryption important for compliance?
Which compliance frameworks address Symmetric Encryption?
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See how Symmetric Encryption applies across compliance frameworks
Our platform maps 1,016 frameworks with 316K cross-framework control mappings. Explore how this concept is addressed across standards.