Abstract: A method for securing the transmission of information in a communication network comprising a plurality of nodes, characterized in that it includes the steps of: an information transmitting node encodes the information with a given code; an error of given weight is added to the encrypted information; the encrypted information and the error are divided into a number of portions that is substantially equal to a chosen number r of possible routes for transmitting the information in the network; the destination address is encrypted; and for each portion, a control information item is associated, making it possible to reconstruct the message at the destination and the encrypted address of the destination node. For the various sets, each including a portion of encrypted information, a control information item and the encrypted address of the recipient node are sent in parallel over the r chosen routes.

Abstract: A method of encoding a piece of information circulating in a network comprising at least one information transmitting node and one recipient node, using a public key encryption system, characterized in that it comprises at least the following steps: generating a public key by using a public key generation matrix NG consisting of u columns and u rows, an element of a column or of a row being a block formed by the code generation matrix G, and by use of a public key given by the matrix PUK=RI (matrix multiplication by block) NG (matrix multiplication) RP. The private key and the public key obtained are used to encode and decode the information transmitted in the network.

Abstract: A method of encoding a piece of information circulating in a network comprising at least one information transmitting node and one recipient node, using a public key encryption system, characterized in that it comprises at least the following steps: generating a public key by using a public key generation matrix NG consisting of u columns and u rows, an element of a column or of a row being a block formed by the code generation matrix G, and by use of a public key given by the matrix PUK=RI (matrix multiplication by block) NG (matrix multiplication) RP. The private key and the public key obtained are used to encode and decode the information transmitted in the network.

Abstract: A method for securing the transmission of information in a communication network comprising a plurality of nodes, characterized in that it includes the steps of: an information transmitting node encodes the information with a given code; an error of given weight is added to the encrypted information; the encrypted information and the error are divided into a number of portions that is substantially equal to a chosen number r of possible routes for transmitting the information in the network; the destination address is encrypted; and for each portion, a control information item is associated, making it possible to reconstruct the message at the destination and the encrypted address of the destination node. For the various sets, each including a portion of encrypted information, a control information item and the encrypted address of the recipient node are sent in parallel over the r chosen routes.