# US 2021/0240366 A1 · Electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0240366 A1 - Document ID: US20210240366A1 - Status: Published application - Kind: A1 - Application number: 17/166,271 - Filed: 2021-02-03 - Published: 2021-08-05 - Earliest claimed: 2020-02-05 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Hitoshi ISHIDA - Web page: https://patentgrep.com/patent/US20210240366A1 ## CPC - G06F 3/0623: {in relation to content} - G06F 3/0655: {Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices} - G06F 3/0679: {Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]} - G06F 21/602: {Providing cryptographic facilities or services} - G06F 21/78: to assure secure storage of data (address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00) - H04L 9/0822: {using key encryption key} - H04L 9/088: {Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms (network architectures or network communication protocols for using time-dependent keys in a packet data network H04L63/068)} - H04L 9/0897: {involving additional devices, e.g. trusted platform module [TPM], smartcard or USB} - H04L 2209/127: Trusted platform modules [TPM] - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A multifunction device includes: a non-volatile memory storing encrypted information, which is information that is encrypted; a TPM for decrypting the encrypted information; and a main board communicating with the non-volatile memory and the TPM. The non-volatile memory and the TPM are attachable to and removable from the main board, as a single body. More specifically, the multifunction device includes: a first sub board which has the non-volatile memory attached thereto and is attachable to and removable from the main board; and a chip board which has the TPM attached thereto and is attachable and removable from the first sub board. ## Claims ### Claim 1 An electronic apparatus comprising: a non-volatile storage medium storing encrypted information, which is information that is encrypted; a security chip for decrypting the encrypted information; and a main board communicating with the non-volatile storage medium and the security chip, wherein the main board has an attachment part to which the non-volatile storage medium and the security chip are attached as a single body. ### Claim 2 (depends on 1) The electronic apparatus according to claim 1, further comprising: a sub board part having the non-volatile storage medium and removably attached to the attachment part of the main board; and a chip board which has the security chip attached thereto and is attachable to and removable from the sub board part. ### Claim 3 (depends on 2) The electronic apparatus according to claim 2, wherein the sub board part has a first sub board which has the non-volatile storage medium attached thereto and is attachable to and removable from the attachment part of the main board and which the chip board is attachable to and removable from. ### Claim 4 (depends on 2) The electronic apparatus according to claim 2, wherein the sub board part has: a second sub board having the non-volatile storage medium attached thereto; and a third sub board which is attachable to and removable from the attachment part of the main board and which the second sub board and the chip board are attachable to and removable from. ### Claim 5 (depends on 1) The electronic apparatus according to claim 1, wherein the encrypted information is information formed by encrypting user information registered to the electronic apparatus by a user. ### Claim 6 (depends on 1) The electronic apparatus according to claim 1, wherein the non-volatile storage medium stores first identification information which is information unique to the electronic apparatus, the security chip stores second identification information corresponding to the first identification information, and the electronic apparatus further comprises a control unit determining whether the security chip forms a correct combination with the non-volatile storage medium, based on the first identification information stored in the non-volatile storage medium and the second identification information stored in the security chip. ### Claim 7 (depends on 6) The electronic apparatus according to claim 6, wherein the security chip stores a second encryption key, the non-volatile storage medium stores the encrypted information encrypted by a first encryption key, and encryption key information formed by encrypting the first encryption key by a second encryption key, and when it is determined that the security chip forms a correct combination with the non-volatile storage medium, the control unit delivers the encryption key information to the security chip, receives from the security chip the first encryption key obtained by decrypting the encryption key information by the second encryption key, and decrypts the encrypted information, based on the first encryption key.