US 11,601,260 B1 · Encryption/decryption using key encapsulation/decapsulation

Abstract

Systems and methods relating to the encryption and decryption of messages to be sent through a communications link. The system and method uses a random data source at the receive and transmit sides, along with a trusted random sampler that produces correlated random samples from the random data source to be used at the send and receive sides. At the transmit side, the correlated random sample is used to generate a symmetric key as well as a ciphertext. The symmetric key is then used to encrypt the message. The ciphertext is transmitted, along with the encrypted message, to the receive side. The receive side then uses the ciphertext, along with its own correlated random sample, to recover the symmetric key. The symmetric key is then used to decrypt the encrypted message.

Claims6

Dependent claims

A method for encrypting and decrypting a message, the encryption method comprising:

a) sampling a random data source to result in a pair of correlated samples from said random data source;
b) sending a first one of said pair of correlated samples to an encapsulation module to generate a symmetric key and a ciphertext;
and
c) encrypting said message using said symmetric key to result in an encrypted message;
wherein the decryption method comprises:
a1) sending a second one of said pair of correlated samples and said ciphertext to a decapsulation module to recover said symmetric key;
b1) decrypting said encrypted message using said recovered symmetric key.

4 more elements

Dependencies are inferred from the claim text.

Encryption/decryption using key encapsulation/decapsulation

Life of this patent

Encryption/decryption using key encapsulation/decapsulation

Life of this patent

Abstract

Claims6