Samsung Electronics Co., Ltd.

Jeehyoung Lee

Sungkyoung Kim

Hunhee Lee

Jongtae Baek

The present disclosure relates to methods, devices, and systems for generating a signature of a message by a first device based on a secret key and a public key. The method includes generating a first parameter based on a first multiplication operation on the secret key and a first random number. The method further includes generating a first electronic signature based on the first parameter and the public key. The method further includes generating a second parameter based on the first random number, a second random number, and the message. The method further includes generating a second electronic signature based on the first parameter, the second parameter, the second random number, and the first electronic signature. The method further includes outputting, to a second device, the message, the first electronic signature, and the second electronic signature.

Encryption device and authentication method and signature generating method of system including the same

Disclosed is an electronic device with a security circuit. The electronic device includes one or more detectors that detect an external attack, a monitoring circuit that receives a detection signal from the one or more detectors in response to the external attack, and generates attack information about the attack from the detection signal, and a security circuit that is implemented with hard-wired logic and is activated in a security mode. The security circuit includes a controller that receives the attack information from the monitoring circuit and determines whether a security event has occurred by calculating an attack count from the attack information, and a security memory that encrypts and stores event information about the security event responsive to a determination from the controller that a security event has occurred.

Electronic device with security circuit and security memory

A security integrated circuit (IC) includes a memory including a first register and a second register, a token generation circuit configured to generate first data based on first bits of interest extracted before performance of an operation by using the first register, generate a first token by converting the first data, generate second data based on second bits of interest extracted after the performance of the operation by using the second register, and generate a second token by converting the second data, and an error detection circuit configured to detect an error on the first and second bits of interest by comparing the first token with the second token.

Security IC and operating method thereof

Provided is a non-transitory computer readable medium. The non-transitory computer readable medium storing program code that, when is executed by a processor, causes the processor to calculate a message, based on a first cipher text, a second cipher text, and a private key, to compare a coefficient of the message with a reference value based on a prime number, to decide a coefficient of a modified message, based on a comparison result between the coefficient of the message and the reference value, and to decrypt the modified message.

Non-transitory computer-readable medium storing program code, decryption device, and communication system including encryption device and decryption device

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Suwon-si, South Korea

Jeehyoung Lee