Supervised and revocable decentralized identity privacy protection scheme

Open Access

Table 1.

Variable definition and explanation

Variable	Explanation
N	N = {1, 2, …, n}
VCSet	Set of n VCs to be combined into a VP, $V C S e t = {{VC}_{j}} for all j \in N$ $VCSet\mathrm{=}\left\{ {VC}_{j} \right\}\mathrm{\thinspace for\thinspace all\thinspace }j\mathrm{\in }N$ , where VC_j = (A_j,C_j,k_j,Valid_j,m_j)
VCIPKSet	Set of VC issuer public keys, $V C I P K S e t = {{VCIPK}_{j}} for all j \in N {where V C I P K}_{j} =$ $VCIPKSet\mathrm{=}\left\{ {VCIPK}_{j} \right\}\mathrm{\thinspace for\thinspace all\thinspace }j\mathrm{\in }N{\thinspace \mathrm{where}\thinspace VCIPK}_{j}=$
	$({\bar{X}}_{j}, {AttrNames}_{j}, {HATTR}_{j}, Δ_{j}, {VCRList}_{j})$ $(\bar{X}_{j}\mathrm{,}{AttrNames}_{j}\mathrm{,}{HATTR}_{j}\mathrm{,}\mathrm{\Delta }_{j}\mathrm{,}{VCRList}_{j})$
dSet	Set of DID keys, $d S e t = {d_{vcj}} for all j \in N . Let {VCDIDs}_{j}$ $dSet\mathrm{=}\left\{ d_{vcj} \right\}\mathrm{\thinspace for\thinspace all\thinspace }j\mathrm{\in }N.\mathrm{\thinspace Let}\thinspace {VCDIDs}_{j}$ be the DIDs used when applying for the j-th
	VC, then ${VCDIDs}_{j} = {DSK}^{msk} \cdot {DRand}^{d_{vcj}}$ $\mathrm{\thinspace }{VCDIDs}_{j}\mathrm{=}{DSK}^{msk}\cdot {DRand}^{d_{vcj}}$
m_j,i	The i-th attribute of the j-th VC
DI_j	The set of attribute indices to be disclosed for the j-th VC
NDI_j	The set of attribute indices not to be disclosed for the j-th VC
NDI	$N D I = {{NDI}_{j}} for all j \in N$ $NDI\mathrm{=}\left\{ {NDI}_{j} \right\}\mathrm{\thinspace for\thinspace all\thinspace }j\mathrm{\in }N$
VPDIDs	The DID used for presenting the VP, VPDIDs=DSK^msk ⋅ DRand^d_vp

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