4 results about "Verifiable encryption" patented technology

A system or method for protecting personal data at cloud services in a computing environment having one or more processors and memory operatively coupled to the one or more processors with computer instructions cause the one or more processors to perform certain operations including creating a cohort of trust among a plurality of user devices where each user device controls a share of a cryptographic key, managing the cryptographic key using the cohort of trust, verifying the integrity of the cryptographic key before using the cryptographic key for cryptographic operation, and verifying authenticity of members in the cohort of trust.

A system or method for protecting personal data at cloud services in a computing environment having one or more processors and memory operatively coupled to the one or more processors with computer instructions cause the one or more processors to perform certain operations including creating a cohort of trust among a plurality of user devices where each user device controls a share of a cryptographic key, managing the cryptographic key using the cohort of trust, verifying the integrity of the cryptographic key before using the cryptographic key for cryptographic operation, and verifying authenticity of members in the cohort of trust.

Methods, systems, and devices for data management are described. A signing device may cryptographically sign, using a private key, a message and output a signature including a random elliptic-curve element and a scalar. The signing device may encrypt the scalar using a publicly-verifiable encryption scheme and via an encryption key, where encrypting the scalar using the publicly-verifiable encryption scheme generates an encrypted scalar and a proof of encryption. The signing device may provide the random elliptic-curve element, the encrypted scalar, and the proof of encryption to a verifying device such that the verifying device may determine whether the random elliptic-curve element and the scalar form a valid signature for the message. The verifying device may determine, without knowing the scalar in decrypted form, whether applying the encrypted scalar to a first public value produces a second public value.

Methods, systems, and devices for data management are described. A server may receive a plurality of parts of a secret from a computing device, where the plurality of parts may be individually encrypted and individually associated with respective public parts. The server may transmit a random challenge to the computing device. The computing device may transmit, to the server, a subset of parts in a decrypted state. The server may determine, using the subset of decrypted parts and a corresponding subset of respective public parts, that the subset of decrypted parts corresponds to a polynomial function with a degree corresponding to a quantity of parts in the subset of decrypted parts. The server may verify that the individually encrypted plurality of parts corresponds to a secret based on determining that the subset of decrypted parts corresponds to the polynomial function.