Class: JSON::LD::SIGNATURE::Ed25519Verifier

Inherits:
Object
  • Object
show all
Defined in:
lib/json/ld/signature/ed25519Verifier.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#priv ⇒ Object 



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# File 'lib/json/ld/signature/ed25519Verifier.rb', line 14

def priv
  @priv
end

#pub ⇒ Object 



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# File 'lib/json/ld/signature/ed25519Verifier.rb', line 10

def pub
  @pub
end

Instance Method Details

#verify(input, options = {}) ⇒ Object 



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# File 'lib/json/ld/signature/ed25519Verifier.rb', line 18

def verify(input, options = {})
  
  # We require a publicKeyPem in the options hash
#      if options['publicKey'].nil?
#        raise JsonLdSignatureError::MissingKey, "options parameter must include publicKey"
#      end

  # The publicKeyPem can be either a String or a parsed RSA key
#      publicKey = options['publicKey']
  publicKey = pub
  
  # Check the input, it should either be a String or a parsed JSON object

  jsonld = case input
  when String then 
  begin
      JSON.parse(input)        
    rescue JSON::ParserError => e
        raise JsonLdSignatureError::InvalidJsonLdDocument, e.message
  end 
  when Hash then input
  else
    raise JsonLdSignatureError::InvalidJsonLdDocument
  end
  
  signature = jsonld['signature']
  
  created = signature['created']
  creator = signature['creator']
  signatureValue = signature['signatureValue']
  domain = signature['domain']
  nonce = signature['nonce']
  
  uri = URI(creator)
  
  normOpts = {
    'nonce' => nonce,
    'domain' => domain,
    'created' => created,
    'creator' => creator
  }
  
  normalizedGraph = JSON::LD::SIGNATURE::generateNormalizedGraph jsonld, normOpts

  publicKey.verify Base64.decode64(signatureValue), normalizedGraph
end