Hawkynt

ZUC

Word-oriented stream cipher with 16-stage LFSR over GF(2^31-1). Core of 3GPP LTE/4G confidentiality (128-EEA3) and integrity (128-EIA3) algorithms for mobile communications.

Properties

Property	Value
Category	Stream Ciphers
Sub-category	3GPP Stream Cipher
Security status	🛡️ Secure
Complexity	Expert
Inventor	DACAS (Data Assurance and Communication Security Research Center)
Year	2010
Origin	🇨🇳 China
Source	algorithms/stream/zuc.js

Parameters

Parameter	Supported values
Key sizes	16 bytes (128 bits)
Nonce sizes	16 bytes (128 bits)

Security

Status: 🛡️ Secure

No vulnerabilities are recorded for this implementation.

Documentation

• 3GPP TS 35.221 - ZUC Specification
• ZUC Algorithm Specification
• 3GPP Security Algorithms

References

• GmSSL C Reference Implementation (ZUC/128-EEA3/128-EIA3)

Test vectors

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

Vector 1 — GSMA ZUC Test Vector 1 - All zeros key and IV

Field	Value
key	00000000000000000000000000000000
iv	00000000000000000000000000000000
input	00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
expected	27bede74018082da87d4e5b69f18bf66 32070e0f39b7b692b4673edc3184a48e 27636f4414510d62cc15cfe194ec4f6d 4b8c8fcc630648badf41b6f9d16a36ca

Vector 2 — GSMA ZUC Test Vector 2 - All ones key and IV

Field	Value
key	ffffffffffffffffffffffffffffffff
iv	ffffffffffffffffffffffffffffffff
input	00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000
expected	0657cfa07096398b734b6cb4883eedf4 257a76eb97595208d884adcdb1cbffb8 e0f9d15846a0eed015328503351138f7 40d079af17296c232c4f022d6e4acac6

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