Z3n8SAFU

class · namespace z3n7 · source Essentials/Safu8.cs

public class Z3n8SAFU : ISAFU

SAFU implementation: AES-256-CBC with an HMAC-SHA256 tag, keys derived with PBKDF2-SHA256 (100 000 iterations). The salt comes from a 32-byte key file. The machine ID is a SHA-256 of the processor ID, the motherboard serial and the system disk serial (WMI). When the jVars blob contains serverHwid, that value is used instead of the local machine ID for Encode, Decode and HWPass.

Constructors#

Z3n8SAFU#

public Z3n8SAFU(string keyFilePath)

source

Creates the implementation. The key file is read on first use and must be exactly 32 bytes.

Methods#

Decode#

public string Decode(IZennoPosterProjectModel project, string toDecrypt, string pin, string acc)

source

Decrypts toDecrypt.

Returns: The plaintext, or an empty string when the input is empty, malformed, or the HMAC does not match.

DecodeHWID#

public string DecodeHWID(IZennoPosterProjectModel project, string toDecrypt)

source

Decrypts with a key derived from the local machine ID only.

Returns: The plaintext, or an empty string when decryption fails.

Encode#

public string Encode(IZennoPosterProjectModel project, string toEncrypt, string pin, string acc)

source

Encrypts toEncrypt. An empty PIN is replaced by a fixed placeholder.

Returns: Base64 of IV + ciphertext + HMAC, or an empty string for empty input.

EncodeHWID#

public string EncodeHWID(IZennoPosterProjectModel project, string toEncrypt)

source

Encrypts with a key derived from the local machine ID only.

Returns: Base64 of IV + ciphertext + HMAC, or an empty string for empty input.

HWPass#

public string HWPass(IZennoPosterProjectModel project, string pin, string acc)

source

Returns a deterministic 24-character password with at least one lowercase letter, uppercase letter, digit and symbol.