FIELD: information technology.
SUBSTANCE: electronic message is encrypted using a symmetric key associated with the domain of the sending agent, and the symmetric key is encrypted using an open encryption key associated with another domain of the receiving agent, which is preferred by the message recipient, to obtain an encrypted version of the symmetric key which is decrypted by another gateway using an open verification key extracted by another gateway, and a secret key stored locally on another domain, wherein the secret key is a secret analogue of the open encryption key. Through the gateway on behalf of the sending agent, the encrypted version of the electronic message is then sent to the receiving agent through another gateway.
EFFECT: high security of transmitted messages.
13 cl, 4 dwg
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