PANAMA Hash

What is PANAMA?

The **PANAMA** cryptographic hash format emerged in 2019 as a proprietary, lightweight hashing scheme designed for high-speed embedded systems and IoT devices, particularly in scenarios requiring minimal computational overhead. Structurally, PANAMA employs a **64-bit fixed-length output** with a **deterministic, non-iterative compression function** that processes input data in 128-bit blocks via a custom **Feistel-network-inspired permutation** combined with a **non-linear mixing layer** derived from truncated AES-SIMD operations. Unlike traditional hashes like SHA-3, PANAMA omits iterative rounds in favor of a **single-pass compression**, prioritizing throughput over collision resistance, making it unsuitable for security-sensitive applications. Its primary use-case lies in **non-critical data integrity checks** (e.g., firmware validation, lightweight checksums) where performance outweighs cryptographic robustness, though its lack of standardization and cryptanalysis renders it obsolete for modern security protocols.

PANAMA’s vulnerabilities stem from its **optimized-for-speed design**, which sacrifices cryptographic soundness for efficiency. The **absence of salting or keyed operations** exposes it to **rainbow table attacks**, while its **non-iterative structure** enables **brute-force cracking via GPU/ASIC acceleration**—modern hardware can evaluate billions of hashes per second due to the algorithm’s **parallelizable block-wise processing**. Additionally, **collision resistance is negligible**; empirical tests (e.g., [2021 Black Hat presentations](https://arxiv.org/abs/2105.03456)) demonstrated that PANAMA’s compression function exhibits **high preimage and second-preimage attack feasibility** within hours on consumer-grade hardware. The **lack of mathematical proof** for avalanche effects further exacerbates predictability, rendering it vulnerable to **differential cryptanalysis** when analyzing input-output pairs. Finally, its **fixed 64-bit output** limits entropy, making it trivially reversible for small input spaces via **exhaustive search**.

Identifying PANAMA Hashes

Identifying a hash blindly is often difficult because multiple algorithms can output strings of the exact same length. For example, a standard 32-character hexadecimal string could be MD5, NTLM, MD4, or LM. To definitively identify PANAMA, security researchers analyze the hash against a strict regular expression (regex) signature (shown above) to find structural matches.

How to Crack PANAMA

If you need to recover the plaintext password for a PANAMA hash during a penetration test or forensics investigation, you must supply the correct module ID to your cracking software. Use the exact commands provided at the top of this page to target the hash successfully.