Class: FROST::DKG::SecretPackage

Inherits:
Object
  • Object
show all
Defined in:
lib/frost/dkg/secret_package.rb

Overview

Package to hold participants’ secret share.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(identifier, min_signers, max_signers, polynomial) ⇒ SecretPackage

Constructor.

Parameters:

  • identifier (Integer) —

    The identifier of this owner.

  • min_signers (Integer) —

    Minimum number of signers.

  • max_signers (Integer) —

    Maximum number of signers.

  • polynomial (FROST::Polynomial) —

    Polynomial with secret share.

Raises:

  • (ArgumentError) 


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# File 'lib/frost/dkg/secret_package.rb', line 17

def initialize(identifier, min_signers, max_signers, polynomial)
  raise ArgumentError, "identifier must be Integer." unless identifier.is_a?(Integer)
  raise ArgumentError, "identifier must be greater than 0." if identifier < 1
  raise ArgumentError, "min_signers must be Integer." unless min_signers.is_a?(Integer)
  raise ArgumentError, "max_signers must be Integer." unless max_signers.is_a?(Integer)
  raise ArgumentError, "polynomial must be FROST::Polynomial." unless polynomial.is_a?(FROST::Polynomial)
  raise ArgumentError, "max_signers must be greater than or equal to min_signers." if max_signers < min_signers
  raise ArgumentError, "Number of coefficients of polynomial and min_signers do not match." unless min_signers == polynomial.coefficients.length

  @identifier = identifier
  @min_signers = min_signers
  @max_signers = max_signers
  @polynomial = polynomial
  @public_package = Package.new(identifier, polynomial.gen_commitments, polynomial.gen_proof_of_knowledge(identifier))
end

Instance Attribute Details

#identifier ⇒ Object (readonly)

Returns the value of attribute identifier.



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# File 'lib/frost/dkg/secret_package.rb', line 6

def identifier
  @identifier
end

#max_signers ⇒ Object (readonly)

Returns the value of attribute max_signers.



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# File 'lib/frost/dkg/secret_package.rb', line 10

def max_signers
  @max_signers
end

#min_signers ⇒ Object (readonly)

Returns the value of attribute min_signers.



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# File 'lib/frost/dkg/secret_package.rb', line 9

def min_signers
  @min_signers
end

#polynomial ⇒ Object (readonly)

Returns the value of attribute polynomial.



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# File 'lib/frost/dkg/secret_package.rb', line 7

def polynomial
  @polynomial
end

#public_package ⇒ Object (readonly)

Returns the value of attribute public_package.



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# File 'lib/frost/dkg/secret_package.rb', line 8

def public_package
  @public_package
end

Instance Method Details

#gen_share(identifier) ⇒ FROST::SecretShare

Generate secret share for identifier.

Parameters:

  • identifier (Integer)

Returns:



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# File 'lib/frost/dkg/secret_package.rb', line 36

def gen_share(identifier)
  polynomial.gen_share(identifier)
end

#group ⇒ ECDSA::Group

Get group.

Returns:

  • (ECDSA::Group) 


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# File 'lib/frost/dkg/secret_package.rb', line 42

def group
  polynomial.group
end

#verification_point ⇒ ECDSA::Point

Get verification point.

Returns:

  • (ECDSA::Point) 


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# File 'lib/frost/dkg/secret_package.rb', line 48

def verification_point
  polynomial.verification_point
end