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Verifiable encryption is an encryption scheme where one can prove some property of a message m, while the message is given in an encrypted form. When an encryption scheme is secure, the encryption E(m) should reveal no information regarding m.
Publicly verifiable encrypted signatures
PendingUS20260180810A1Key distribution for secure communicationUser identity/authority verificationTheoretical computer scienceEncryption
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.
Owner:COINBASE INC