Decrypt Huawei Password Cipher

def decrypt_huawei_cipher(cipher_text):
    # Remove %^%# prefix and suffix
    if cipher_text.startswith('%^%#') and cipher_text.endswith('%^%'):
        cipher_text = cipher_text[4:-3]
key_stream = b'\x73\x4D\x3E\x12\xA9...'  # 256-byte fixed key
plaintext = []
for i, ch in enumerate(cipher_text.encode()):
    plaintext.append(ch ^ key_stream[i % len(key_stream)])
return bytes(plaintext).decode('ascii', errors='ignore')

However, the exact key differs slightly between:

Thus, generic decryption requires trying multiple known key streams.

Some Huawei devices allow password decryption via display password-control configuration or by dumping the password in clear using:

display current-configuration | include password

On older firmware, if you have console access but your password is shown in cipher, you can set a new one:

system-view
user-interface vty 0 4
set authentication password simple NewPassword123

Then re-export the config – the new password will appear in cipher, but you know the plaintext.

# Simple demo for reversing Huawei Type 7 obfuscation
cipher = "07@9%+2%5c%k0%6d%Q"
key = [0x0D, 0x2B, 0x3A, 0x4F, 0x5E, 0x6D, 0x7C]
# (Full decoder requires the static 52-byte Huawei key table)
print("Decoded: [Requires full key table]")

Final advice: If you are locked out of a production Huawei device, don't crack it—reset it (config saved via TFTP first). If you must decrypt a Type 9 hash, prepare a powerful GPU cluster and a good wordlist.

Have a specific config line you need help with? Post the first 10 characters of the cipher (e.g., %^%#...) and I'll identify the type.

Disclaimer: This post is for educational purposes and password recovery on owned equipment only.

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: decrypt huawei password cipher

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

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. However , the exact key differs slightly between:

: 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?

Understanding Huawei Password Ciphers In the world of networking and data security, "decrypting a Huawei password cipher" refers to the process of converting an encrypted (ciphertext) string—found in a configuration file or management interface—back into its original plaintext format. Types of Huawei Password Storage

Huawei devices, including routers, switches, and firewalls, use different methods for password protection based on the device age and firmware version:

Plaintext: The password is stored as-is (e.g., Huawei@123). This is rarely used in production for security reasons.

Reversible Ciphertext: Passwords are encrypted using algorithms like DES, 3DES, or AES. These can be decrypted if the key is known.

Irreversible Hashing: Modern firmware (e.g., V200R019C10 and later) uses irreversible algorithms like SHA256 or PBKDF2 with a unique salt. These cannot be "decrypted" in the traditional sense; they can only be cracked via brute-force or dictionary attacks. How to Decrypt Reversible Ciphers

If you encounter a reversible cipher in a configuration file, you can often revert it to plaintext using specific tools or official procedures. 1. Using Official Management Tools

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. Thus, generic decryption requires trying multiple known key

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?

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

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.

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.

Several online decryptors exist (search "Huawei cipher decoder"). Steps:

Risks: Your plaintext password and device configuration are sent to a third party. Only use offline tools for production gear.