DataTerminology.comNEW
Achievement of attack objectives such as key or plaintext recovery that compromises a cryptographic system’s security guarantees.
DESCRIPTION
Cryptanalysis success occurs when an adversary meets defined goals like recovering keys, decrypting ciphertext, or distinguishing a primitive from random. Success is measured under explicit adversary models, data and time complexities, and resource constraints. Security margins aim to make successful attacks infeasible within practical limits. Standards often define acceptable failure probabilities and attack surfaces. Monitoring and postmortems should reassess controls when attacks succeed. Clear success criteria guide risk management and design mitigation.
ALTERNATIVE DEFINITIONS
IETF RFC 4949
break (a cryptographic system): To succeed in a cryptanalytic attack against it.
Defines ‘break’ explicitly as attack success against a cryptographic system.
Wikipedia
Success in cryptanalysis may result in the recovery of the plaintext or the key.
Emphasizes practical outcomes of cryptanalytic success: plaintext or key recovery.
RELATED TERMS
Cryptanalysis Attack Success Probability Break Key Recovery Plaintext Recovery Security Margin Threat Modeling Risk Assessment Cipher Strength Adversary Model
COMPETING TERMS
KNOWLEDGE AREAS
Data Security Data Privacy & Compliance Testing & Validation Observability & Telemetry
TARGET AUDIENCE
Chief Information Security Officer Security Architect Cybersecurity Engineer IT Auditor Data Privacy Officer
EXTERNAL SOURCES
- Wikipedia - Cryptanalysis
- NIST CSRC Glossary - Glossary entry for cryptanalysis
- OWASP - Implications when cryptographic protections fail
TOP QUESTIONS
What defines Cryptanalysis Success in practice?
Meeting attack goals such as key or plaintext recovery, protocol compromise, or distinguishing a primitive from random under the assumed adversary model.
Category: Definition
How do organizations measure Cryptanalysis Success risk?
By analyzing attack complexities, monitoring exposure, and aligning design margins with standards and threat models.
Category: Risk
What is a common misunderstanding about Cryptanalysis Success?
That success requires full key recovery; partial recovery, practical distinguishers, or protocol breaks can be equally damaging.
Category: Misunderstanding
Which controls reduce the odds of Cryptanalysis Success?
Use vetted algorithms, correct implementations, side-channel defenses, key management hygiene, and ongoing cryptanalytic evaluation.
Category: BestPractices
How should teams respond to Cryptanalysis Success?
Perform incident analysis, rotate keys, patch implementations, and reassess threat models and cryptographic choices.
Category: Management
What role do standards play in preventing Cryptanalysis Success?
Standards define acceptable algorithms and practices, guiding robust configurations and minimum security margins.
Category: Standards
When is a distinguisher considered Cryptanalysis Success?
When it violates assumed security properties within practical resources, even without full-key recovery.
Category: Opinion
How does key management affect Cryptanalysis Success?
Poor key generation, storage, or rotation can turn theoretical cryptanalytic possibilities into practical system breaks.
Category: Requirements
What’s an example of Cryptanalysis Success impact?
Recovered keys enable decrypted communications, lateral movement, and reputational damage due to data exposure.
Category: Example