Decrypt Huawei Password Cipher May 2026

Attempting to decrypt a Huawei password cipher without authorization is illegal in many jurisdictions under computer fraud laws (CFAA in the US, Computer Misuse Act in the UK). Acceptable scenarios include:

Never use these techniques to break into a Huawei device you do not own.

For VRP5 ciphers, Hashcat mode 11500 (Huawei VRP5) sometimes works:

hashcat -m 11500 hash.txt -a 3 ?l?l?l?l?l?l

But note: decryption (reversing) is different from cracking. Hashcat attempts brute-force, whereas decryption uses the known key.

Scenario: You have a Huawei HG8245H (ONT) config backup. You see: decrypt huawei password cipher

pppoe password cipher "2%^%#eJzKlpQ3bG5udGVzdDEyMw==%^%#"

Goal: Get plaintext password.

Steps using known tool (huawei_pppoe_decrypt):

Result: test123

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. Attempting to decrypt a Huawei password cipher without

Copy the string following the cipher keyword.

| Problem | Likely Cause | Solution | |--------|--------------|----------| | Decrypted text looks like random symbols | Wrong algorithm version | Try VRP8 or ONT keystream | | Cipher string too short | You only copied part of it | Ensure full %^%# ... %^% is included | | Device shows "cipher 7" instead | That’s Cisco, not Huawei | Different algorithm entirely | | Decryption returns "admin" for any input | Fake tool or joke | Use trusted open-source code |

The original cracking of Huawei’s cipher is credited to security researchers and open-source contributors around 2005–2010. The algorithm is symmetric XOR with a fixed key stream.