Beyond Cryptography : A Multi-layer Approach to Communication Privacy
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Recent developments in the field of physical-layer security are beginning to challenge commonly-held assumptions of how security can be obtained in a communication system. Conventional security practices almost always rely on cryptographic protocols to ensure message confidentiality. Physical-layer security, however, seeks to complement or even replace higher-level cryptography with techniques that leverage low-level nonidealities such as channel noise in order to keep messages secure. The primary contributions of this work are twofold: we first present an analysis of how errors introduced ...