FIELD: protection of data transmission.
SUBSTANCE: method comprises steps of: obtaining, using a user device, a session security policy; wherein the session security policy is used to indicate the session data security mode between the user device and the network access node; obtaining, using the user device, at least one key; using a user device, protecting security of session data for a session using said at least one key based on said session policy to obtain secure data and transmitting, using the user device, secure session data to the network access node.
EFFECT: securing session data based on a security policy indicating a security mode for a session between a user node and an access node.
27 cl, 26 dwg
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