Samsung Electronics Co., Ltd.

Snu Rdb Foundation

Hyunsook Hong

Jisoo Kim

Yongsuk Lee

Younsung Chu

Hyungsup Kim

Seung-Jae Lee

Jinsu Kim

Kyunghee Lee

Byung-Gook Kim

Bumhan Kim

Moonwook Oh

Eunyoung Kwon

Junghee Cheon

Brian Myungjune Jung

Seokgi Hong

Jintaek Kwon

Hansol Ryu

Daeok Kim

Myeongjong Lee

Hongtae Kim

A storage device configured to communicate with a host, the storage device including: a memory including a protected region; and a controller configured to provide the host with a first response including a first device message authentication code and a first device message, receive a first write request from the host, the first write request including a first host message authentication code and a first host message, generate a first message verification code based on the first device message authentication code and the first host message, verify the first write request based on the first host message authentication code and the first message verification code, and write data included in the first write request to the protected region when the verification of the first write request succeeds.

System, device, and method for writing data to protected region

A method of writing data to a protected region in response to a request from a host includes receiving a first write request including a first host message authentication code and a first random number from the host, verifying the first write request based on a write count, the first random number, and the first host message authentication code, updating the write count based on a result of verifying the first write request, generating a first device message authentication code based on the updated write count and the first random number, and providing the host with a first response including the first device message authentication code and a result of the verifying of the first write request.

Universal flash storage (UFS) device and method of writing data to a replay protected memory block (RPMB) region of a UFS

System, device and method for writing data to protected region

A storage device providing a function of securely discarding data and an operating method of the storage device are provided. The storage device includes a safety pin device removably mounted on the storage device, the safety pin device configured to store first encrypted information and second encrypted information, the first encrypted information encrypted using a first key associated with a first user, and the second encrypted information encrypted using a second key associated with a second user, security circuitry configured to, receive the first encrypted information from the safety pin device, decrypt the first encrypted information, and generate a data encryption key based on results of the decrypting the first encrypted information, and a nonvolatile memory configured to store data encrypted with the data encryption key.

Storage device providing function of securely discarding data and operating method thereof

A storage device includes a nonvolatile memory device, and a controller that manages a data encryption key (DEK). The DEK is used to encrypt data to be written in a storage space of the nonvolatile memory device by a first user and to decrypt data read from the storage space. The controller grants a second user authority to access the storage space by encrypting the DEK based on a Diffie-Hellman (DH) algorithm, grants a second user authority to access the encrypted DEK, and decrypts the encrypted DEK based on the DH algorithm.

Storage device sharing data encryption key as encrypted and operating method of storage device

A data protection method and apparatus that can protect data through encryption using a Boolean function is provided. The data protection method includes applying an inverse affine transformation to data to be encrypted using a Boolean function; applying round operations of an Advanced Encryption Standard (AES) cryptographic algorithm to the inverse-affine transformed data; and producing ciphertext data by applying an affine transformation to the result of the round operations.

Data protection method and apparatus

Growing community of inventors

Suwon-si, South Korea

Hyunsook Hong