Hawkynt

Trivium

Hardware-oriented NLFSR-based stream cipher using three interconnected shift registers. eSTREAM hardware portfolio finalist and ISO/IEC 29192-3 standard with 288-bit state.

Properties

Property	Value
Category	Stream Ciphers
Sub-category	NLFSR Stream Cipher
Security status	🛡️ Secure
Complexity	Advanced
Inventor	Christophe De Cannière, Bart Preneel
Year	2005
Origin	🇧🇪 Belgium
Source	algorithms/stream/trivium.js

Parameters

Parameter	Supported values
Key sizes	10 bytes (80 bits)
Nonce sizes	10 bytes (80 bits)

Security

Status: 🛡️ Secure

No vulnerabilities are recorded for this implementation.

Documentation

• ISO/IEC 29192-3:2012 - Trivium Stream Cipher
• eSTREAM Trivium Specification
• Trivium: A Stream Cipher Construction

References

• Public-Domain Trivium Reference Implementation (matches designer’s reference output)

Test vectors

2 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — eSTREAM Trivium Set 1, vector#0 - stream[0..63]

Field	Value
key	80000000000000000000
iv	00000000000000000000
input	00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
expected	38eb86ff730d7a9caf8df13a4420540d bb7b651464c87501552041c249f29a64 d2fbf515610921ebe06c8f92cecf7f80 98ff20cccc6a62b97be8ef7454fc80f9

Vector 2 — eSTREAM Trivium Set 6, vector#0 - stream[0..63]

Field	Value
key	0053a6f94c9ff24598eb
iv	0d74db42a91077de45ac
input	00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
expected	f4cd954a717f26a7d6930830c4e7cf08 19f80e03f25f342c64adc66aba7f8a8e 6eaa49f23632ae3cd41a7bd290a0132f 81c6d4043b6e397d7388f3a03b5fe358

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