Protocols and applications could profit of quantum cryptography to secure communications. The applications of quantum cryptography are linked to telecommunication services that require very high level of security such as bank transactions.
The aim of this paper is to present the possibility to use quantum cryptography in critical financial transactions, to analyse the use of quantum key distribution within IPSEC to secure these transactions and to present the estimated performances of this solution.
After having introduced basic concepts in quantum cryptography, we describe a scenario of using quantum key distribution in bank transactions in Switzerland. Then, we propose a solution that integrate quantum key distribution into IPSEC. A performance analysis is done to demonstrate the operational feasibility of this solution.