Abstract: Security cryptographic device comprising a device essentially characterized by the mechanism of bolts (7 and 7a), with different features, thereof and at least one tool for operating the bolts (3). Depending on the features of the bolts (7 y 7a), the latter can operate in one or several directions and/or in one or both directions and can lock automatically and/or on being operated and be operated individually or together. Depending on the features of the device, not all the tools for operating bolts (3) have to match all the bolts (7 and 7a), nor do all the bolts (7 and 7a) have to match all the cavities (5), which means having to know which bolt (7 and 7a) matches each cavity (5), which tool (3) matches each bolt (7 and 7a), and whether or not each bolt (7 and 7a) should be operated.