What is yellowkey-bitlocker?

YellowKey BitLocker is a Windows utility that claims to help users manage and recover access to drives encrypted with BitLocker. BitLocker is a disk encryption feature built into Windows that protects data by requiring a recovery key or password to unlock a drive. Situations where someone might need a recovery tool include forgetting a PIN, replacing a motherboard, or inheriting a device without the original credentials. According to the README, the tool provides an interface for entering a recovery key or password, selecting an encrypted drive, and unlocking or managing the volume. The intended workflow is to download a ZIP archive, extract it, run the executable as Windows Administrator, and follow a setup guide. The troubleshooting table in the README advises disabling antivirus software temporarily if the tool does not start, which is a common note for this type of software because security tools may flag programs that interact directly with encrypted volumes or system-level disk management. The README disclaimer states the project is for educational and personal use only, that users must ensure they have proper authorization to access any encrypted drive, and that the authors accept no responsibility for data loss or legal consequences. The repository description and topics include references to a CVE identifier and the word "bypass," though the README body does not explain those in detail. The README itself focuses on the key management and recovery use case for Windows 11.