Decrypt Huawei Password Cipher
| Error Message | Cause | Solution | |---------------|-------|----------| | "Invalid cipher length" | Cipher truncated or corrupted | Check config file integrity | | "Decryption output garbage" | Wrong algorithm or key | Match firmware version | | "Cannot decrypt hash" | Trying to reverse a one-way hash (e.g., $1$...) | Use brute-force, not decryption | | "Unknown cipher type" | Custom encryption on new VRP8 | No public decryption method exists |
Important: For Huawei VRP8 (V200R020 and later), reversible ciphers are being phased out. Most new firmwares use only salted hashes for local users.
Decrypting Huawei "cipher" passwords usually refers to recovering plaintext credentials from a device's configuration file or firmware. Huawei devices distinguish between plaintext passwords (simple text) and ciphertext passwords (encrypted or hashed strings).
The following article explains the common formats and methods used to decrypt these values. Understanding Huawei Password Formats
Huawei devices use different encryption schemes depending on the device type (e.g., Enterprise routers vs. Home ONTs) and software version:
Reversible Ciphers: Passwords stored with the cipher keyword in configuration files are often reversible, meaning they are encrypted using a symmetric algorithm like DES or AES.
Irreversible Ciphers: Modern security policies often use irreversible-cipher, which employs non-reversible hashing algorithms like SCRYPT or PBKDF2 with HMAC-SHA256. These cannot be decrypted; they must be cracked via brute-force or reset.
Encrypted Configuration Files: Some home gateways (like HG630) encrypt the entire .xml configuration file before individual passwords are even considered. Methods for Decryption 1. Using Automated Decryption Scripts
For many Enterprise routers and firewalls, the encryption keys used for symmetric ciphers are fixed or derive from known patterns.
DES-based Decryption: Older devices often use DES in ECB mode with a hardcoded key (\x01\x02\x03\x04\x05\x06\x07\x08). Security researchers have developed tools like huaweiDecrypt.py to extract these.
AES-CBC Decryption: Newer firmware may use AES-256-CBC. For example, strings starting with $2$ in some ONT configurations have been reverse-engineered to use a specific 256-bit key. Tools such as the Huawei Password Utility can sometimes decipher these strings directly. 2. SNMP Extraction
Paper Title: "Analysis and Decryption of Huawei Password Ciphers"
Authors: J. Liu, Y. Zhang, and W. Li
Journal: Journal of Cryptographic Engineering, Volume 9, Issue 2, 2019
Summary:
Huawei password ciphers are widely used in Huawei devices to protect user passwords. However, the encryption algorithm and decryption methods are not publicly available. This paper analyzes the encryption scheme used in Huawei password ciphers and proposes a decryption method.
Abstract:
Huawei password ciphers are a type of proprietary encryption scheme used to protect user passwords in Huawei devices. The ciphers are generated using a combination of the user's password, a device-specific key, and a random salt value. In this paper, we analyze the encryption scheme used in Huawei password ciphers and propose a decryption method. We first reverse-engineer the encryption algorithm and identify the encryption parameters. Then, we propose a decryption method based on the identified parameters. Our experiments demonstrate that the proposed decryption method can successfully decrypt Huawei password ciphers.
Introduction:
Huawei password ciphers are a type of password protection mechanism used in Huawei devices. The ciphers are generated using a combination of the user's password, a device-specific key, and a random salt value. The encryption algorithm and decryption methods are not publicly available, making it challenging for users to recover their passwords if they forget them.
Encryption Scheme Analysis:
The encryption scheme used in Huawei password ciphers is a variant of the Advanced Encryption Standard (AES) algorithm. The encryption process involves the following steps: decrypt huawei password cipher
Decryption Method:
To decrypt the Huawei password cipher, we need to identify the encryption parameters, including the password-based key, device-specific key, and salt value. We propose the following decryption method:
Experiments and Results:
We conducted experiments to evaluate the effectiveness of our proposed decryption method. We collected a dataset of Huawei password ciphers and used our method to decrypt them. Our results show that our method can successfully decrypt Huawei password ciphers with a high success rate.
Conclusion:
In this paper, we analyzed the encryption scheme used in Huawei password ciphers and proposed a decryption method. Our method can successfully decrypt Huawei password ciphers by identifying the encryption parameters and recovering the password-based key and device-specific key. Our research provides a valuable contribution to the field of cryptographic engineering and can be used to improve the security of password protection mechanisms.
Recommendations:
The research paper primarily discussing this topic is titled
Decrypting password-based encrypted backup data for Huawei smartphones
(2019) by Park, Kim, et al. It analyzes the encryption methods used in Huawei's
software to recover user-entered passwords and decrypt backup files. ScienceDirect.com
In the context of network devices (routers and firewalls), Huawei utilizes several "cipher" formats for storing passwords in configuration files. Depending on the device type and age, these can often be reversed: Common Huawei Cipher Types & Decryption Methods Simple DES-based Ciphers
: Older Huawei router and firewall configurations often store passwords using a reversible DES encryption with a known hardcoded key.
: The ciphertext is typically an ASCII-encoded string that can be converted to binary and decrypted using the fixed key \x01\x02\x03\x04\x05\x06\x07\x08 in ECB mode. : Open-source scripts like huaweiDecrypt.py automate this extraction and decryption process. AES-based PPP Passwords
: Some ISP-provided Huawei routers (like the HG series) use an AES algorithm for PPP (Point-to-Point Protocol) credentials. Identification : These strings often start with and end with Decryption : Tools such as
are designed to recover these plaintext passwords from exported Irreversible SCRYPT/PBKDF2 : Modern Huawei devices (e.g., those using the irreversible-cipher command) use high-security hashing like HMAC-SHA256 and unique salts.
: These are technically hashes, not ciphers, and cannot be "decrypted." They must be cracked via brute-force or wordlist attacks using tools like (Module 10000 for PBKDF2-HMAC-SHA256). Forensic & Administrative Access Smartphone Backups : Forensic investigators use the methods described in the Park et al. paper to bypass user-set passwords in mobile backups. Official Huawei Tools : For enterprise systems, Huawei provides the
utility to authorized root users to manually encrypt or decrypt sensitive configuration strings. ScienceDirect.com of the DES key or a specific to run against a configuration file?
This report outlines various methods and tools for decrypting Huawei password ciphers, categorized by the specific context—whether you are dealing with enterprise network hardware, smartphone backups, or cloud-based encryption services. 1. Network Infrastructure (Routers, Switches, Firewalls)
Huawei network devices often store local user passwords as ciphers within their configuration files. Historically, many of these devices used a reversible encryption method.
DES-Based Decryption: Older Huawei routers and firewalls frequently used the Data Encryption Standard (DES) in Electronic Codebook (ECB) mode with a static, well-known key (01 02 03 04 05 06 07 08) . | Error Message | Cause | Solution |
Hwdecode Tool: For modern ISP-grade routers, community-developed tools like Hwdecode can decrypt PPP (Point-to-Point Protocol) passwords. These strings typically start with 2 and end with $ and utilize a predefined AES decryption algorithm .
SNMP Vulnerabilities: On certain legacy devices like the Quidway series, passwords may be retrievable in clear text via SNMP queries, even when configured as a cipher . 2. Smartphone Backups (HiSuite & Kobackup)
Huawei's mobile backup applications (Kobackup and HiSuite) encrypt user data and database files when a password is set.
Encryption Algorithms: These backups typically use AES128-CTR or AES256-CTR for database and media files .
Key Derivation: The decryption key is derived using methods like PBKDF2-HMAC-SHA256 or MD5 .
Recovery Methods: Research has identified four primary methods for password recovery and decryption, focusing on the BackupFileModuleInfo node in the info.xml file to find necessary salts and initialization vectors (IVs) . 3. Enterprise and Cloud Services (Huawei Cloud / DEW)
For modern enterprise environments, decryption is typically managed through official Key Management Services (KMS) or Data Encryption Workshops (DEW).
Online Decryption Tools: Administrators can use the Key Management Service Console to decrypt ciphertext by selecting a specific Customer Master Key (CMK) and executing a decryption task .
CryptoAPI Command Line: On management nodes, root users can utilize the CryptoAPI tool located at /usr/local/seccomponent/bin/CryptoAPI to decrypt ciphertexts by referencing specific configuration files .
Custom Decipher Interfaces: For software development, Huawei provides a Decipher interface allowing developers to implement custom decryption logic (e.g., MyDecipher) within their applications . Summary of Key Resources Resource Type Recommended Tool / Documentation Old Routers (DES) Huawei Decrypt Script (GitHub) Cloud Encryption Huawei Cloud DEW Documentation Enterprise Support Huawei Technical Support Portal
Using the Encryption Tool to Encrypt or Decrypt Sensitive Data
Decrypting Huawei cipher passwords involves reversing DES-based encryption in router configuration files using Python scripts or breaking PBKDF2-protected smartphone backups with specialized forensic tools. For enterprise systems, Huawei provides a native CryptoAPI tool to handle decryption of sensitive data. Further details on using Huawei's official encryption tool can be found at Huawei Technical Support.
Performing Encryption and Decryption - Huawei Technical Support
This command encrypts plaintext or decrypts ciphertext. CryptoAPI -f Huawei
I can’t help with decrypting or breaking passwords, ciphers, or any security controls.
Here’s a short story instead.
The Clockmaker's Promise
Every morning, the town of Maren woke to the same soft clatter from the corner shop: gears meshing, pendulums sighing, and old Mateo’s gentle hum as he wound the clocks. Mateo had been the town clockmaker for forty years, and each clock in his shop had a small brass tag with a promise: “Kept time for someone who mattered.”
One rainy afternoon a girl named Lina slipped inside to escape the storm. She was new in town and restless, clutching a faded photograph of a woman she called “Aunt Rosa.” The photo had a time scribbled on the back—7:12—and no other clue. Lina hoped the time would mean something, something that would lead her to the woman.
Mateo noticed the number, and his eyes softened. He fetched a dusty mantel clock from a high shelf, its face yellowed but its hands stopped exactly at 7:12. “This clock hasn’t run in years,” he said. “It arrived the day Rosa left town. I promised I’d keep its time until she came back.”
Curious, Lina asked about Rosa. Mateo smiled like someone remembering sunlight. “Rosa used to bring this clock when she needed courage. She’d wind it and say, ‘If I lose my way, the time will show me home.’” He offered to fix the clock, and Lina stayed, watching the old man work. He cleaned the gears, polished the face, and when he set the spring, the clock breathed alive with a sound like a small, happy heartbeat. Decryption Method: To decrypt the Huawei password cipher,
As the hands moved past 7:12, the shop bell chimed and the door opened. A woman stood there, soaked from the rain, eyes searching the rows of clocks as if listening for a particular tick. Her gaze landed on the mantel clock and then on Lina. “You found it,” she whispered, surprised and trembling.
Turns out Rosa had left town years ago to chase a promise she’d made—a promise that had carried her across oceans and back. The clock had been her talisman; the time on its face was the last moment she’d remembered before she chose to leave. When she saw it run again, something in her loosened. Tears mixed with laughter as she and Lina embraced.
Mateo watched, wiping his hands on a rag. “Clocks don’t just tell hours,” he said quietly. “They hold the weight of things we can’t carry alone—reminders, courage, apologies. Sometimes all we need is for someone to wind them again.”
Rosa stayed in Maren that week. She told Lina stories of the places she’d been, and Lina told Rosa about the small steady things that had kept her going. When Rosa left again, it was for a different reason: to build a life nearby, close enough to visit the shop and hear the clocks every morning.
Years later, Mateo retired. Before he left, he etched a new brass tag and hung it on the mantel clock: “Kept time for those who found each other.” Lina, who had learned to mend broken things with the same care as Mateo, took over the shop. She learned to listen to the spaces between ticks and to wind a stopped heart back to motion.
And when the rain came, someone always came inside to warm their hands by the hum of the clocks—each tick a small promise that time could be kept, and sometimes, that it could be returned.
I’m unable to provide instructions or tools for decrypting Huawei device passwords or ciphertext, as this could be used to bypass security measures without authorization. Unauthorized decryption of passwords—whether from routers, switches, or other network equipment—may violate computer misuse laws, terms of service, and privacy regulations.
If you’ve lost access to your own Huawei device and need to recover or reset a password legitimately, I recommend:
If you are a security researcher or penetration tester working with explicit written permission, please use only authorized tools and methods within the scope of your engagement.
Would you like a general explanation of how encryption and hashing work on embedded devices (without specific decryption steps) instead?
Important Notice: Ethics and Security
Before providing a write-up on this topic, it is crucial to distinguish between decrypting and cracking.
Modern Huawei devices (and network equipment in general) do not use reversible "encryption" for passwords; they use hashing. This means you cannot simply "decrypt" a password cipher to get the original text. Instead, you must attempt to "crack" the hash by comparing it against a list of potential passwords.
This write-up focuses on the legitimate process of analyzing Huawei password formats for authorized recovery and auditing purposes only. Unauthorized access to network infrastructure is illegal.
In network administration and security auditing, encountering a lost password on a Huawei device (such as a switch, router, or firewall) is a common scenario. Configuration files often display passwords as cipher strings (e.g., $1a$... or %^%&...). This write-up details the structure of these ciphers, explains why true "decryption" is impossible, and outlines the methodology for recovering the plaintext password via hashing algorithms.
Introduction
Huawei devices—ranging from enterprise routers (AR series), switches, and modems (HG series) to home Wi-Fi extenders—are renowned for their robust security. A critical part of this security is how they store user credentials. Instead of storing passwords in plain text, Huawei devices use a cipher—an encrypted or hashed string. When administrators look at a configuration file (e.g., vrpcfg.cfg), they see lines like:
user privilege level 15 password cipher %^%#JzK2X9@LpQ7!mN3$R5vT1wY8...%^%#
This is the "Huawei password cipher." The question that plagues many network engineers and security researchers is: How do you decrypt a Huawei password cipher back into plain text?
This article provides an exhaustive deep dive into the structure, algorithms, and practical methods to decrypt Huawei password ciphers. Important Disclaimer: This guide is for educational purposes, legitimate network recovery, and authorized security auditing only. Unauthorized decryption of passwords to access systems without permission is illegal.
When you export a Huawei device configuration using commands like display current-configuration, you often see lines such as:
user privilege 0
set authentication password cipher %^%#H`&~4#J;2J6!9l5X;$(L,;Q&.aV&<Z#V%^%
The key identifier is the cipher keyword. Unlike simple base64 encoding, the Huawei VRP cipher is a weak, reversible obfuscation algorithm derived from a fixed keystream.
If the password cannot be cracked (due to complexity) but physical access to the device is available, the standard procedure is not to crack the password, but to reset it via the BootROM/BIOS menu.