Hawkynt

Panama-LE

Panama hash function with little-endian byte order. Belt-and-mill construction combining linear feedback shift register (belt) and nonlinear state machine (mill). Broken by collision attacks - use for legacy compatibility only.

Properties

Property	Value
Category	Hash Functions
Sub-category	Belt-and-Mill
Security status	❌ Broken
Complexity	Advanced
Inventor	Joan Daemen, Craig Clapp
Year	1998
Origin	🇧🇪 Belgium
Source	algorithms/hash/panama.js

Parameters

Parameter	Supported values
Hash sizes	32 bytes (256 bits)

Security

Status: ❌ Broken

No vulnerabilities are recorded for this implementation.

Documentation

• Panama Specification (FSE’98)
• Original Paper (FSE’98)
• NESSIE Portfolio

References

• Crypto++ Implementation
• Crypto++ Test Vectors

Test vectors

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

Vector 1 — Panama-LE: Empty string (Crypto++ reference)

Field	Value
input	(empty)
expected	aa0cc954d757d7ac7779ca3342334ca471abd47d5952ac91ed837ecd5b16922b

Vector 2 — Panama-LE: ‘The quick brown fox jumps over the lazy dog’ (Crypto++ reference)

Field	Value
input	54686520717569636b2062726f776e20 666f78206a756d7073206f7665722074 6865206c617a7920646f67
expected	5f5ca355b90ac622b0aa7e654ef5f27e9e75111415b48b8afe3add1c6b89cba1

Vector 3 — Panama-LE: Repeated ‘a’ pattern (15625 repetitions, Crypto++ generated)

Field	Value
input	61616161616161616161616161616161 61616161616161616161616161616161 61616161616161616161616161616161 61616161616161616161616161616161 … (1000000 bytes; the full value is in the source)
expected	af9c66fb6058e2232a5dfba063ee14b0f86f0e334e165812559435464dd9bb60

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