A Flexible Signature Based on Post-Quantum Cryptography for IoT Devices
| Autor: | Hao Duan, 段昊 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 This thesis presented how to improve flexible digital signature. In the flexible digital signature scheme, we designed the signature scheme for real-time systems or IoT devices with limited resources. Especially the signature verification algorithm can quantify the validity of the signature based on the number of computations instead of traditional signatures such as RSA and ECDSA which are represented by all-or-nothing. However, the use of Lamport one-time signature will generate a huge size of keys and signatures which imposes a heavy load on the storage of devices with limited resources in the Hash-based signature. So this thesis proposes that the Winternitz one-time signature replaces the Lamport one-time signature to reduce the size of the signature. In addition, the pseudorandom number generator is applied to the Merkle hash tree, which improves the storage of public and private keys in the trade-off of computation and validity. The feature of forward security makes it impossible for an adversary to obtain a used private key to forge a signature. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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