Lawful interception security

A method performed by a lawful interception, LI, intercept access point, IAP, in a virtual network function, VNF, the method comprising:

• receiving, from a LI administrative function, ADMF, a random value and a target hash value, said target hash value being a result of use of a one-way hash function on a target, said target identifying a communicating entity that is to be subjected to LI in the IAP,
• receiving a message associated with an identity,
• calculating a test hash value using said one-way hash function on the identity and the random value,
• comparing the test hash value with the target hash value and, if the test hash value is equal to the target hash value, then
• performing LI on the target.