Scalable and redactable blockchain with update and anonymity
Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concern...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Huang, Ke [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021transfer abstract |
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| Schlagwörter: |
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| Umfang: |
17 |
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| Übergeordnetes Werk: |
Enthalten in: Mo1264 Clinical Characteristics of Inflammatory Bowel Disease May Influence the Cancer Risk When Using Immunomodulators: Incident Cases of Cancer in a Multicenter Case-Control Study - Petrruzziello, Carmelina ELSEVIER, 2013, an international journal, New York, NY |
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| Übergeordnetes Werk: |
volume:546 ; year:2021 ; day:6 ; month:02 ; pages:25-41 ; extent:17 |
| Links: |
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| DOI / URN: |
10.1016/j.ins.2020.07.016 |
|---|
| Katalog-ID: |
ELV052156362 |
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| 245 | 1 | 0 | |a Scalable and redactable blockchain with update and anonymity |
| 264 | 1 | |c 2021transfer abstract | |
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| 520 | |a Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. | ||
| 520 | |a Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. | ||
| 650 | 7 | |a Internet-of-Things |2 Elsevier | |
| 650 | 7 | |a Blockchain |2 Elsevier | |
| 650 | 7 | |a Redaction |2 Elsevier | |
| 650 | 7 | |a Spontaneous Ring |2 Elsevier | |
| 700 | 1 | |a Zhang, Xiaosong |4 oth | |
| 700 | 1 | |a Mu, Yi |4 oth | |
| 700 | 1 | |a Rezaeibagha, Fatemeh |4 oth | |
| 700 | 1 | |a Du, Xiaojiang |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science Inc |a Petrruzziello, Carmelina ELSEVIER |t Mo1264 Clinical Characteristics of Inflammatory Bowel Disease May Influence the Cancer Risk When Using Immunomodulators: Incident Cases of Cancer in a Multicenter Case-Control Study |d 2013 |d an international journal |g New York, NY |w (DE-627)ELV011843691 |
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10.1016/j.ins.2020.07.016 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001237.pica (DE-627)ELV052156362 (ELSEVIER)S0020-0255(20)30676-9 DE-627 ger DE-627 rakwb eng 610 VZ 570 VZ BIODIV DE-30 fid 35.70 bkl 42.12 bkl 42.15 bkl Huang, Ke verfasserin aut Scalable and redactable blockchain with update and anonymity 2021transfer abstract 17 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things Elsevier Blockchain Elsevier Redaction Elsevier Spontaneous Ring Elsevier Zhang, Xiaosong oth Mu, Yi oth Rezaeibagha, Fatemeh oth Du, Xiaojiang oth Enthalten in Elsevier Science Inc Petrruzziello, Carmelina ELSEVIER Mo1264 Clinical Characteristics of Inflammatory Bowel Disease May Influence the Cancer Risk When Using Immunomodulators: Incident Cases of Cancer in a Multicenter Case-Control Study 2013 an international journal New York, NY (DE-627)ELV011843691 volume:546 year:2021 day:6 month:02 pages:25-41 extent:17 https://doi.org/10.1016/j.ins.2020.07.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 35.70 Biochemie: Allgemeines VZ 42.12 Biophysik VZ 42.15 Zellbiologie VZ AR 546 2021 6 0206 25-41 17 |
| spelling |
10.1016/j.ins.2020.07.016 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001237.pica (DE-627)ELV052156362 (ELSEVIER)S0020-0255(20)30676-9 DE-627 ger DE-627 rakwb eng 610 VZ 570 VZ BIODIV DE-30 fid 35.70 bkl 42.12 bkl 42.15 bkl Huang, Ke verfasserin aut Scalable and redactable blockchain with update and anonymity 2021transfer abstract 17 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things Elsevier Blockchain Elsevier Redaction Elsevier Spontaneous Ring Elsevier Zhang, Xiaosong oth Mu, Yi oth Rezaeibagha, Fatemeh oth Du, Xiaojiang oth Enthalten in Elsevier Science Inc Petrruzziello, Carmelina ELSEVIER Mo1264 Clinical Characteristics of Inflammatory Bowel Disease May Influence the Cancer Risk When Using Immunomodulators: Incident Cases of Cancer in a Multicenter Case-Control Study 2013 an international journal New York, NY (DE-627)ELV011843691 volume:546 year:2021 day:6 month:02 pages:25-41 extent:17 https://doi.org/10.1016/j.ins.2020.07.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 35.70 Biochemie: Allgemeines VZ 42.12 Biophysik VZ 42.15 Zellbiologie VZ AR 546 2021 6 0206 25-41 17 |
| allfields_unstemmed |
10.1016/j.ins.2020.07.016 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001237.pica (DE-627)ELV052156362 (ELSEVIER)S0020-0255(20)30676-9 DE-627 ger DE-627 rakwb eng 610 VZ 570 VZ BIODIV DE-30 fid 35.70 bkl 42.12 bkl 42.15 bkl Huang, Ke verfasserin aut Scalable and redactable blockchain with update and anonymity 2021transfer abstract 17 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things Elsevier Blockchain Elsevier Redaction Elsevier Spontaneous Ring Elsevier Zhang, Xiaosong oth Mu, Yi oth Rezaeibagha, Fatemeh oth Du, Xiaojiang oth Enthalten in Elsevier Science Inc Petrruzziello, Carmelina ELSEVIER Mo1264 Clinical Characteristics of Inflammatory Bowel Disease May Influence the Cancer Risk When Using Immunomodulators: Incident Cases of Cancer in a Multicenter Case-Control Study 2013 an international journal New York, NY (DE-627)ELV011843691 volume:546 year:2021 day:6 month:02 pages:25-41 extent:17 https://doi.org/10.1016/j.ins.2020.07.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 35.70 Biochemie: Allgemeines VZ 42.12 Biophysik VZ 42.15 Zellbiologie VZ AR 546 2021 6 0206 25-41 17 |
| allfieldsGer |
10.1016/j.ins.2020.07.016 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001237.pica (DE-627)ELV052156362 (ELSEVIER)S0020-0255(20)30676-9 DE-627 ger DE-627 rakwb eng 610 VZ 570 VZ BIODIV DE-30 fid 35.70 bkl 42.12 bkl 42.15 bkl Huang, Ke verfasserin aut Scalable and redactable blockchain with update and anonymity 2021transfer abstract 17 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things Elsevier Blockchain Elsevier Redaction Elsevier Spontaneous Ring Elsevier Zhang, Xiaosong oth Mu, Yi oth Rezaeibagha, Fatemeh oth Du, Xiaojiang oth Enthalten in Elsevier Science Inc Petrruzziello, Carmelina ELSEVIER Mo1264 Clinical Characteristics of Inflammatory Bowel Disease May Influence the Cancer Risk When Using Immunomodulators: Incident Cases of Cancer in a Multicenter Case-Control Study 2013 an international journal New York, NY (DE-627)ELV011843691 volume:546 year:2021 day:6 month:02 pages:25-41 extent:17 https://doi.org/10.1016/j.ins.2020.07.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 35.70 Biochemie: Allgemeines VZ 42.12 Biophysik VZ 42.15 Zellbiologie VZ AR 546 2021 6 0206 25-41 17 |
| allfieldsSound |
10.1016/j.ins.2020.07.016 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001237.pica (DE-627)ELV052156362 (ELSEVIER)S0020-0255(20)30676-9 DE-627 ger DE-627 rakwb eng 610 VZ 570 VZ BIODIV DE-30 fid 35.70 bkl 42.12 bkl 42.15 bkl Huang, Ke verfasserin aut Scalable and redactable blockchain with update and anonymity 2021transfer abstract 17 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. 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Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. |
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Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. |
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Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes. |
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Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). To ensure the scalability of initially-deployed blockchains, a proper countermeasure is important to be devised. Ateniese et al. proposed the notion of the redactable blockchain (EuroS&P 2017) which allows block history to be rewritten by using chameleon hash. However, the distribution and management of trapdoor key is crucial for the scalability of chameleon hash as well as redactable blockchain. To deal with the above problems, we propose two cryptographic schemes as the new theoretic tools for blockchain redaction: time updatable chameleon hash (TUCH) and linkable-and-redactable ring signature (LRRS). The use of TUCH and LRRS schemes enables redaction to take place scalably and anonymously where the spontaneous ring is generated for redaction, which costs little expenditures to rewrite a block content. Specifically, the redaction will be processed without assigning and splitting trapdoor key among multiple users in a complex way, and achieve transaction anonymity for users. What is more, we briefly instantiate how to build a redactable blockchain with update and anonymity (SRB) with our proposed TUCH and LRRS. While security analysis confirms that our proposals are theoretically secure, the experimental results show that our proposals are efficient for implementation purposes.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Internet-of-Things (IoT) envisions communications between heterogeneous devices and utilization of the associated data for smart decision making. Blockchain bridges the gap between widely-distributed IoT devices and the need for a universal trust-layer. When applying blockchain for IoT, some concerns can arise. Among them, scalability is a crucial factor because it decides whether blockchain can keep empowering IoT in the long term. According to a recent survey by Ali et al., some newly launched blockchains are suffering from powerful attacks (e.g. 51% attack) when the computing pool is small, and the number of participated nodes is inadequate (USENIX 2016). 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