Class SecretSharing

Hierarchy

SecretSharing

Index

Constructors

constructor

new SecretSharing(ff: FiniteField): SecretSharing
Parameters
- ff: FiniteField
Returns SecretSharing
- Defined in sss.ts:24

Properties

`Readonly` ff

ff: FiniteField

`Static` shareLength

shareLength: number = 64

Methods

basis

basis(indice: FBN[], index?: FBN): FBN[]
Lagrange basis

Returns
Parameters
- indice: FBN[]
  
  The list of known x
- index: FBN = ...
  
  The point to interpolate
Returns FBN[]
- Defined in sss.ts:74

construct

construct(shares: Uint8Array[]): Uint8Array
Recontruct the original secret from its shares

Returns
The original secret
Parameters
- shares: Uint8Array[]
  
  List of shares
Returns Uint8Array
- Defined in sss.ts:133

ft1

ft1(shares: Uint8Array[]): Uint8Array
Derive the coefficient of the highest term

Returns
The highest coefficient
Parameters
- shares: Uint8Array[]
  
  Secret shares
Returns Uint8Array
- Defined in sss.ts:98

interpolate

interpolate(index: Uint8Array, shares: Uint8Array[]): FBN
Lagrange Interpolation

Returns
The y coordinate
Parameters
- index: Uint8Array
  
  The x coordinate
- shares: Uint8Array[]
  
  The sufficient number of shares
Returns FBN
- Defined in sss.ts:121

merge

merge(prev: Uint8Array, next: Uint8Array): Uint8Array
Merge the current share with an update to the next share

Returns
The next share
Parameters
- prev: Uint8Array
  
  The current share
- next: Uint8Array
  
  The update
Returns Uint8Array
- Defined in sss.ts:213

proactivate

proactivate(t: number, n: number, indice: Uint8Array[], __namedParameters?: {
id?: Uint8Array;
}): Uint8Array[]
Proactivate the shares

Returns
List of next shares
Parameters
- t: number
  
  The threshold
- n: number
  
  The total number of shares
- indice: Uint8Array[]
  
  The list of indexes
- __namedParameters: {
  id?: Uint8Array;
  } = {}
  - Optional id?: Uint8Array
Returns Uint8Array[]
- Defined in sss.ts:191

share(key: Uint8Array, t: number, n: number, __namedParameters?: {
id?: Uint8Array;
indice?: Uint8Array[];
}): Uint8Array[]
Split a secret into multiple shares. The algorithm allows t of n shares able to reconstruct the secret.

Returns
List of shares and zkps
Parameters
- key: Uint8Array
  
  The secret (Must be less than this.red)
- t: number
  
  The threshold
- n: number
  
  The total number of shares
- __namedParameters: {
  id?: Uint8Array;
  indice?: Uint8Array[];
  } = {}
  - Optional id?: Uint8Array
  - Optional indice?: Uint8Array[]
Returns Uint8Array[]
- Defined in sss.ts:147

`Static` compress

compress(opts: ExtractedSecretShare): Uint8Array
Convet a share from human-readable object to bytes-like array

Returns
Bytes-like array
Parameters
- opts: ExtractedSecretShare
  
  ExtractedShare
Returns Uint8Array
- Defined in sss.ts:46

`Static` extract

extract(share: Uint8Array): ExtractedSecretShare
Convert a share from bytes-like array to human-readable object

Returns
Human-readable object
Parameters
- share: Uint8Array
  
  Bytes-like array
Returns ExtractedSecretShare
- Defined in sss.ts:33

Class SecretSharing

Hierarchy

Index

Constructors

Properties

Methods

Constructors

constructor

Parameters

ff: FiniteField

Returns SecretSharing

Properties

Readonly ff

Static shareLength

Methods

basis

Returns

Parameters

indice: FBN[]

index: FBN = ...

Returns FBN[]

construct

Returns

Parameters

shares: Uint8Array[]

Returns Uint8Array

ft1

Returns

Parameters

shares: Uint8Array[]

Returns Uint8Array

interpolate

Returns

Parameters

index: Uint8Array

shares: Uint8Array[]

Returns FBN

merge

Returns

Parameters

prev: Uint8Array

next: Uint8Array

Returns Uint8Array

proactivate

Returns

Parameters

t: number

n: number

indice: Uint8Array[]

__namedParameters: { id?: Uint8Array; } = {}

Optional id?: Uint8Array

Returns Uint8Array[]

share

Returns

Parameters

key: Uint8Array

t: number

n: number

__namedParameters: { id?: Uint8Array; indice?: Uint8Array[]; } = {}

Optional id?: Uint8Array

Optional indice?: Uint8Array[]

Returns Uint8Array[]

Static compress

Returns

Parameters

opts: ExtractedSecretShare

Returns Uint8Array

Static extract

Returns

Parameters

share: Uint8Array

Returns ExtractedSecretShare

Settings

Member Visibility

Theme

`Readonly` ff

`Static` shareLength

__namedParameters: {
id?: Uint8Array;
} = {}

`Optional` id?: Uint8Array

__namedParameters: {
id?: Uint8Array;
indice?: Uint8Array[];
} = {}

`Optional` id?: Uint8Array

`Optional` indice?: Uint8Array[]

`Static` compress

`Static` extract