Scientific and electronic apparatus and instruments, namely, cryptographic modules, namely, downloadable software for encryption purposes, computerized hardware security module for the random generation of private security keys and custody of master security keys, all for use in cryptography, computer hardware and downloadable software for digital signature of documents and electronic emails, computer hardware and downloadable software providing cryptographic data security functions, downloadable software programs for the generation of credit cards with cryptographic chips; computers and computer peripheral devices, namely, computer keyboards, tape and disc recorders, scanners, visual display units, mice, electronic pencils, hard discs for computers and printers; data processing downloadable computer programs for cryptographic purposes; downloadable computer programs for the symmetrical keys encoded; apparatus and instruments for recording, transmission or reproduction of sound, image and audiovisual data; apparatus and magnetic data media, namely, blank magnetic data carriers; blank floppy disk, cd-rom, dvds