sha224($salt.$pass) Hash

What is sha224($salt.$pass)?

The cryptographic hash format `sha224($salt.$pass)` is derived from the SHA-2 family of hash functions, specifically SHA-224, a truncated variant of SHA-256 designed to produce a 224-bit (28-byte) hash output. Introduced as part of the broader SHA-2 standard (FIPS 180-4) in 2012, SHA-224 inherits the Merkle-Damgård structure of its predecessors, processing input data through a series of compression functions that incorporate bitwise operations, modular arithmetic, and message scheduling. The inclusion of a salt—a random or unique value concatenated to the password before hashing—was originally intended to mitigate precomputed attack vectors (rainbow tables) by ensuring each password hash is context-specific. This format is primarily deployed in password storage systems, such as PHP’s `password_hash()` function (when configured for SHA-224), where security trade-offs between performance and collision resistance are considered. However, its adoption remains niche due to the dominance of SHA-256 and SHA-512 in modern cryptographic standards, as shorter output sizes reduce resistance to brute-force and collision attacks.

Despite its salted design, `sha224($salt.$pass)` exhibits critical vulnerabilities rooted in its cryptographic parameters and computational efficiency. The 224-bit output space—though larger than SHA-1’s 160 bits—remains susceptible to collision attacks when subjected to high-throughput hardware acceleration, as GPUs and FPGAs can evaluate SHA-224 variants at speeds exceeding 100+ GHash/s. The truncated output also weakens the birthday bound, reducing the effective collision resistance to approximately 2²¹ operations, which is computationally feasible with optimized implementations. Additionally, the lack of key stretching (e.g., iterative hashing or work factors like Argon2) means the hash function’s native speed can be fully exploited by attackers, enabling brute-force attacks at rates limited only by memory bandwidth. The salt, while mitigating rainbow tables, does not address these fundamental weaknesses, leaving the scheme vulnerable to GPU-accelerated cracking tools like Hashcat or John the Ripper with optimized SHA-224 kernels.

Identifying sha224($salt.$pass) 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 sha224($salt.$pass), security researchers analyze the hash against a strict regular expression (regex) signature (shown above) to find structural matches.

How to Crack sha224($salt.$pass)

If you need to recover the plaintext password for a sha224($salt.$pass) 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.