Quantum safe key exchange scheme

A computer-implemented method of executing a hybrid quantum safe key exchange system, the computer-implemented method comprising:

• generating a quantum safe algorithm (QSA) key pair for key encryption management and first and second elliptic curve cryptography (ECC) key pairs for key agreement;
• generating a first Z value using a private key of the first ECC key pair and a certified form of a public key of the second ECC key pair with an EC Diffie-Hellman (ECDH) algorithm;
• deriving a shared key using a random value, generated at a trusted source, and by using the first Z value with a key derivation function;
• encrypting the random value using a public key of the QSA key pair to produce an encrypted random value, which is retrievable from the trusted source;
• decrypting the encrypted random value using a private key of the QSA key pair to produce the random value;
• generating a second Z value using a private key of the second ECC key pair and a certified form of a public key of the first ECC key pair with the ECDH algorithm;
• and
• deriving the shared key using the random value produced by the decrypting and the second Z value with the key derivation function.