Decryption
What is Decryption?
The process of converting encrypted data back to its original plaintext form using a cryptographic key or algorithm.
Terms that appear alongside decryption
Each of these is named in at least one of the same controls as decryption. The number is how many controls name both.
- nist 2 shared controls
- breach notification 2 shared controls
- encryption at rest 2 shared controls
- encryption 2 shared controls
- authentication 2 shared controls
- key management 2 shared controls
Frameworks that govern decryption
What the standards actually require on decryption
Requirements naming decryption across 6 standards, quoted from the control text.
The decryption environment where account data is converted from ciphertext to plaintext must be logically isolated, hardened, and protected by strong access controls compliant with PCI DSS.
Domain-4.1 · Decryption Environment Logical Security →Implement a mechanism to encrypt and decrypt ePHI. NIST recommends FIPS 140-validated cryptography, encryption at rest for all ePHI stores, and key management aligned to SP 800-57.
164.312(a)(2)(iv) · Encryption and Decryption (Addressable) →Implement a mechanism to encrypt and decrypt ePHI. NIST recommends FIPS 140-validated cryptography, encryption at rest for all ePHI stores, and key management aligned to SP 800-57.
164.312(a)(2)(iv) · Encryption and Decryption (Addressable) →Incident Response capability is critical per FSA Cybersecurity Guidelines. (1) Incident Response Plan: (a) Documented IR Plan + per FFIEC IT Examination Handbook reference; (b) ISO/IEC 27035 Information Security Incident Management;
JP-FSA-CYB-Incident-Response-Playbooks-Containment-Eradication-Recovery-Post-Mortem-Tabletop-CSIRT · Japan FSA Cybersecurity Incident Response + Playbooks + Containment + Eradication + Recovery + Post-Mortem + Tabletop Exercises + CSIRT + FSA Notification + Customer Communication + Forensics + Lessons Learned →Cote dIvoire Law 2013-450 Articles 19-25 + Decree 2017-740 Sensitive Personal Data and Special Categories. Article 19 Sensitive Data categories (donnees sensibles): racial or ethnic origin + political opinions + religious or philosophical beliefs + trade union...
CI-DPL-Sensitive-Personal-Data-Article-19-Special-Categories-Childrens-Data-Article-21-Minors-Parental-Consent · Cote dIvoire Law 2013-450 Sensitive Personal Data + Article 19 + Children + Article 21 →Implement HIPAA Security Rule Technical Safeguards per 45 CFR 164.312 covering technical access + audit + integrity + authentication.
NISTSP66-6 · Technical Safeguards: Access Control, Audit Controls, Integrity, Person Authentication →Questions people ask about decryption
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See how Decryption applies across compliance frameworks
Our platform maps 686 frameworks with 311K cross-framework control mappings. Explore how this concept is addressed across standards.