Abstract: Portable integrated device (100) for data encryption/decryption and/or compression/decompression including: an outer casing (2); at least one authentication support cryptographic chip (4); at least one first data input/output port (5) adapted to be interfaced with external devices; at least one second data input/output port (6) adapted to be interfaced with external devices; at least one main chip including at least one CPU (3); the CPU (3) including: at least one microprocessor or microcontroller; and at least one cryptographic engine.