# Category:Cryptography

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**Cryptography** is the study of ways to convert information from its normal, comprehensible form into an obscured guise, unreadable without special knowledge — the practice of *encryption*. In the past, cryptography helped ensure secrecy in important communications, such as those of spies, military leaders, and diplomats. In recent decades, the field of cryptography has expanded its remit. Examples include schemes like digital signatures and digital cash, digital rights management for intellectual property protection, and securing electronic commerce. Cryptography is now often built into the infrastructure for computing and telecommunications; users may not even be aware of its presence.

## Subcategories

This category has the following 30 subcategories, out of 30 total.

### A

### C

### D

### E

### H

### K

### L

### N

### O

### P

### Q

### R

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### T

### Σ

## Pages in category "Cryptography"

The following 200 pages are in this category, out of approximately 265 total. This list may not reflect recent changes (learn more).

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### A

### B

### C

- Chaffing and winnowing
- Chaotic cryptology
- Cipher
- Ciphertext
- Ciphertext expansion
- Ciphertext indistinguishability
- Client-side encryption
- CloudMask
- Code (cryptography)
- Code word
- Codebook
- Codress message
- Communications security
- Comparison of cryptographic hash functions
- Completeness (cryptography)
- Computer security
- Concrete security
- Conjugate coding
- Convergent encryption
- Correlation immunity
- Cover (telecommunications)
- Cover-coding
- Critical Security Parameter
- Cryptanalysis
- Crypto Wars
- Crypto-shredding
- Cryptochannel
- Cryptographic engineering
- Cryptographic hash function
- Cryptographic High Value Product
- Cryptographic Module Testing Laboratory
- Cryptographic multilinear map
- Cryptographic nonce
- Cryptographic Service Provider
- CrypTool
- CryptoParty
- Cryptosystem
- Cryptovirology
- CrySyS Lab
- Cypherpunks (book)

### D

- Data at rest
- Data in use
- Database encryption
- Decimal sequences for cryptography
- Decipherment
- Deniable encryption
- Designated verifier signature
- Devcoin
- Device-independent quantum cryptography
- DigiDoc
- Digital credential
- Dining cryptographers problem
- Diplomatic bag
- Direct Anonymous Attestation
- Discrete logarithm
- Discriminant Book
- Decentralized autonomous organization
- DogTag

### E

### F

### H

### K

### L

### M

### N

### P

- Padding (cryptography)
- Passphrase
- Password Authenticated Key Exchange by Juggling
- Password strength
- Password-based cryptography
- Pepper (cryptography)
- PGP word list
- Philco computers
- Pizzino
- PKIoverheid
- Plaintext
- Point to Point Encryption
- Polygraphic substitution
- POODLE
- Post-quantum cryptography
- PRESENT
- Prince (cipher)
- PrivateCore
- Privilege Management Infrastructure
- Probabilistic signature scheme
- Proof of knowledge
- Proof-of-space
- Proof-of-stake
- Proof-of-work system
- Protocol composition logic
- Provable security
- Proxy re-encryption
- Pseudorandom ensemble
- Pseudorandom generator