Abstract
The present cryptography systems security depends on the hardness of factorizing an integer number with a large number of digits to its prime integer factors. In 1994, Peter Shor proposed a quantum procedure (Shor's algorithm) that easily factorizes large integer numbers to its prime factors compared with other algorithms. Consequently, present cryptography systems became endangered and once quantum computers exist, conventional cryptography systems could breakdown. On the other hand, quantum cryptography security is based on the well-known quantum mechanics uncertainty principle, and so the quantum cryptography enhances the cryptography field with a mechanism for eavesdropper detecting. Here, a hardware implementation was proposed for two types of key distribution protocols based on quantum computing, the one-way quantum key distribution protocol (BB84 protocol), and the two-way quantum key distribution protocol.
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