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:
Copy the exact cipher string from the configuration file, including the starting and trailing %^%# markers.
To decrypt a reversible Huawei password cipher, one must understand how the ciphertext is structured. Modern Huawei configurations format these ciphers as long, alphanumeric strings that often start with specific magic headers. A typical modern Huawei AES cipher text structure includes:
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The hash and its corresponding salt are extracted from the configuration line.
For automation and scripting, several command-line utilities exist:
For developers working with Huawei Cloud services, the CipherUtils class (part of the ROMA Connect service) provides programmatic decryption capabilities. The method com.huawei.livedata.lambdaservice.security.CipherUtils decrypts key values stored in password boxes, protecting sensitive information from exposure during data transfer. The encryption scheme used in Huawei password ciphers
Depending on the age of the configuration and the encryption type used, security professionals use several methods to retrieve plain text passwords. Method 1: Online Decoding Tools (For Legacy Ciphers)
, the heart of the cloud's security. In a legitimate environment, he would: Access the Console : Log in as a VDC administrator to reach the Select the Key : Locate the alias of the Customer Master Key (CMK) used for the original encryption. Execute the Decipher
Enter the BootRom password. Default passwords vary by model (common defaults include Admin@huawei.com , huawei , or Huawei@123 ). Modern Huawei configurations format these ciphers as long,
| | Common Algorithms | Common Locations | | :----------------------- | :------------------------------- | :--------------------------------------------------------------------------------------------------------------- | | Enterprise (VRP5) | MD5 , HMAC-MD5 , AES-128-CBC | Configuration files (.cfg, .zip) for AR routers, S-series switches, USG firewalls. | | Enterprise (VRP8+) | HMAC-SHA256 , AES-256-GCM | Configuration files, leveraging hardware TRNG for key generation and TPM for enhanced security. | | Consumer/Home Router | MD5 + SHA256 (chained) , DES | Web interface password fields, hw_ctree.xml (modem config), config.bin files, $1 and $2 prefixed strings. |
Modern VRP allows configuring a custom enhancement to local ciphers by changing the system master key ( set password-encryption master-key ). This ensures that even if a legacy cipher is used, it cannot be decrypted using public, generic tools.