Django(PBKDF2-HMAC-SHA1) Hash

What is Django(PBKDF2-HMAC-SHA1)?

The cryptographic hash format **Django(PBKDF2-HMAC-SHA1)** is a password hashing scheme originally integrated into the Django web framework (a high-level Python web framework) to secure user authentication credentials. It is a wrapper around the **Password-Based Key Derivation Function 2 (PBKDF2)** with **HMAC-SHA1** as the underlying hash function, augmented with Django’s proprietary salt handling and iteration count mechanisms. Structurally, it follows a key derivation process where a password is iteratively hashed with a cryptographic salt (a unique per-user value) using HMAC-SHA1, with the number of iterations configurable to balance security and performance. The primary use-case lies in password storage for web applications, where it provides defense against rainbow table attacks through salting and computational delay via iterative hashing, though its design predates modern cryptographic best practices. Django’s implementation also includes a custom encoding scheme to store the hashed password in a database, combining the salt, iteration count, and hash result into a single string for easy retrieval and verification.

The **Django(PBKDF2-HMAC-SHA1)** scheme is vulnerable to cracking due to several inherent weaknesses. Firstly, **SHA-1 is cryptographically broken**, suffering from collision vulnerabilities and insufficient collision resistance, making it susceptible to length-extension attacks and precomputed hash table attacks if salts are weak or reused. Secondly, the **default iteration count (26,000 iterations in older Django versions)** is often too low to resist brute-force attacks on modern hardware, especially when leveraged with GPU/FPGA clusters optimized for parallel PBKDF2 cracking (e.g., via tools like Hashcat or John the Ripper). Additionally, while Django automatically generates salts, the **salt length (typically 16–32 bytes) is not sufficiently large** to mitigate against brute-force attempts when combined with weak iteration counts or optimized hardware. Finally, the **lack of a modern hash function (e.g., SHA-256 or BLAKE3)** and reliance on PBKDF2’s iterative design—without adaptive iteration scaling—makes it vulnerable to Moore’s Law-driven computational advances, rendering it insecure against sustained offline attacks.

Identifying Django(PBKDF2-HMAC-SHA1) 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 Django(PBKDF2-HMAC-SHA1), security researchers analyze the hash against a strict regular expression (regex) signature (shown above) to find structural matches.

How to Crack Django(PBKDF2-HMAC-SHA1)

If you need to recover the plaintext password for a Django(PBKDF2-HMAC-SHA1) 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.