original: Diffie-Hellman key exchange (D-H) is a cryptographic protocol that allows two parties that have no prior knowledge of each other to jointly establish a shared secret key over an insecure communications channel.
simplifications: the Diffie-Hellman key exchange (D-H) is an official secret system that lets two groups that do not know each other make a shared secret key together over an information sharing channel that is not secure. Diffie-Hellman key exchange (D-H) is a cryptographic protocol. It allows two parties that don't know each other to create a secret key over an unprotected channel. Diffie-Hellman key exchange (D-H) is a cryptographic protocol. This allows two people to create a secret key over unsecured channels. Diffie-Hellman key exchange (D-H) is a cryptographic protocol. It lets two parties that don't know each other to establish a shared secret key over an insecure communications channel. Diffie-Hellman key exchange (D-H) is a cryptographic protocol. It lets two people that don't know each other make and share a secret key over a communications channel that isn't secure. Diffie-Hellman key exchange is a process that allows two parties who do not know each other to create a shared secret key together over an unsecured communications channel. Diffie-Hellman key exchange (D-H) is a cryptographic method that allows two parties that have no previous knowledge of each other to create a shared secret key together over an insecure communications channel. Diffie-Hellman key exchange (D-H) is a cryptographic protocol. This protocol allows two parties without prior knowledge of each other to create a shared secret key over an insecure communications channel. Two different parties can use a D-H (a cryptographic protocol) to share a secret key over insecure communications channel. Diffie-Hellman Key Exchange (D-H) is a cryptographic protocol which allows two parties with no prior knowledge of each other to jointly establish a shared secret key over an unsafe communication channel.