Encryption is an obscure but critical part of everyday life. That padlock in the address bar of the website you’re visiting represents the ‘s’ after ‘http’ — which stands for the latest version of ...

近年，ユーザーの属性を秘密鍵に，復号条件（ポリシー）を暗号文に関連付け，ポリシーを満たす属性を有するユーザーのみ暗号文を復号することが可能な属性ベース暗号（Ciphertext-Policy Attribute-Based Encryption：CP-ABE）が提案されている。属性ベース暗号は ...

Abstract: Due to the integration of cloud computing in Internet of Things (IoT) systems, an increasing volume of IoT data is encrypted and uploaded to cloud servers. Attribute-Based Keyword Search ...

The security of traditional attribute-based searchable encryption schemes relies on traditional number-theoretic assumptions, and thus they are not able to resist the threat of quantum algorithms.