Aspects of the disclosure relate to storing sensitive information. A computing platform may split a signature key into shares, which may be used to regenerate the signature key. The computing platform may encrypt these shares using corresponding SEKs, and may subsequently encrypt the SEKs using corresponding operator keys. The computing platform may distribute the operator keys to user devices via corresponding HSMs. The computing platform may store the encrypted shares, encrypted SEKs, and identifiers of the user devices. The computing platform may receive requests for the encrypted SEKs from the user devices, and may send the respective encrypted SEKs accordingly. The user devices may return, to the computing platform, corresponding decrypted SEKs. The computing platform may use the SEKs to decrypt the encrypted shares, which may then be used to reconstruct the signature key.