Abstract: A module has a processor for executing an encryption process to encrypt a message to a cipher-text with authentication. The encryption process includes generating a tag from a secret message authentication code (MAC) key, a nonce, a message, and optionally an additional data using a Poly1305 function, generating a pseudorandom initialization vector (IV) from a secret encryption key and the tag using a first encryption function, and generating a cipher-text from the secret encryption key, the generated IV, and the message using a second encryption function. The module or a similar module may execute a corresponding decryption process to decrypt the cipher-text to a decrypted message and verify the authenticity of the cipher-text. At least one of the first and second encryption functions may be an Advanced Encryption Standard (AES) encryption function such as an AES-CTR encryption function, an AES-like encryption function, and/or other suitable encryption functions.

Abstract: An encoder encrypts a message by generating a nonce, using a first encryption key to encode the nonce, splitting the message into a first part and a second part, using the first encryption key and the encoded nonce to encrypt the first part of the message into a first ciphered part, using a second encryption key, the encoded nonce and the first ciphered part to generate an initialization vector, using the first encryption key and the initialization vector to encrypt the second part of the message into a second ciphered part, and generating a ciphertext comprising the first ciphered part, the second ciphered part, the initialization vector and the nonce. A decoder uses a reverse process to decrypt the message. The decryption comprises generating a copy of the initialization vector, which is compared to the initialization vector in order to verify that the message is properly decrypted.

Abstract: A module has a processor for executing an encryption process to encrypt a message to a cipher-text with authentication. The encryption process includes generating a tag from a secret message authentication code (MAC) key, a nonce, a message, and optionally an additional data using a Poly 1305 function, generating a pseudorandom initialization vector (IV) from a secret encryption key and the tag using a first encryption function, and generating a cipher-text from the secret encryption key, the generated IV, and the message using a second encryption function. The module or a similar module may execute a corresponding decryption process to decrypt the cipher-text to a decrypted message and verify the authenticity of the cipher-text. At least one of the first and second encryption functions may be an Advanced Encryption Standard (AES) encryption function such as an AES-CTR encryption function, an AES-like encryption function, and/or other suitable encryption functions.

Abstract: An encoder encrypts a message by generating a nonce, using a first encryption key to encode the nonce, splitting the message into a first part and a second part, using the first encryption key and the encoded nonce to encrypt the first part of the message into a first ciphered part, using a second encryption key, the encoded nonce and the first ciphered part to generate an initialization vector, using the first encryption key and the initialization vector to encrypt the second part of the message into a second ciphered part, and generating a ciphertext comprising the first ciphered part, the second ciphered part, the initialization vector and the nonce. A decoder uses a reverse process to decrypt the message. The decryption comprises generating a copy of the initialization vector, which is compared to the initialization vector in order to verify that the message is properly decrypted.