Encryption
Definition
Encryption protects confidential data by making it unreadable using a key.
The reversible transformation of plaintext into ciphertext using a cryptographic algorithm and key to protect confidentiality.
Simply explained
A message is transformed into secret writing. With the appropriate key, it can be read again.
Why it matters in practice
The term contributes to secure, maintainable, and high-performance web applications as well as resilient technical decisions.
Example from business
An operation encrypts sensitive backups with centrally managed, separately protected keys.
Limits and pitfalls
- Encryption does not automatically provide integrity, authentication, or access control; key management is crucial.
Origin & history
Modern encryption evolved from manual ciphers to standardized symmetric and asymmetric methods.
Use in mid-sized companies
- Possible example: An operation encrypts sensitive backups with centrally managed, separately protected keys.
Frequently asked questions
What does encryption mean?
The reversible transformation of plaintext into ciphertext using a cryptographic algorithm and key to protect confidentiality. What should be considered? Encryption does not automatically provide integrity, authentication, or access control; key management is crucial.
Sources
- NIST SP 800-175B Rev. 1 · NIST SP 800-175B Rev. 1
Source checked on 10.10.2026. Editorial application examples are hypothetical; no evidence of real customer results.
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