Add handling of Linked Data Signatures in payloads (#4687)

* Add handling of Linked Data Signatures in payloads

* Add a way to sign JSON, fix canonicalization of signature options

* Fix signatureValue encoding, send out signed JSON when distributing

* Add missing security context

2 files changed, 136 insertions, 0 deletions

diff --git a/lib/json_ld/identity.rb b/lib/json_ld/identity.rb
new file mode 100644
index 000000000..cfe50b956
--- /dev/null
+++ b/lib/json_ld/identity.rb
@@ -0,0 +1,86 @@
+# -*- encoding: utf-8 -*-
+# frozen_string_literal: true
+# This file generated automatically from https://w3id.org/identity/v1
+require 'json/ld'
+class JSON::LD::Context
+  add_preloaded("https://w3id.org/identity/v1") do
+    new(processingMode: "json-ld-1.0", term_definitions: {
+      "Credential" => TermDefinition.new("Credential", id: "https://w3id.org/credentials#Credential", simple: true),
+      "CryptographicKey" => TermDefinition.new("CryptographicKey", id: "https://w3id.org/security#Key", simple: true),
+      "CryptographicKeyCredential" => TermDefinition.new("CryptographicKeyCredential", id: "https://w3id.org/credentials#CryptographicKeyCredential", simple: true),
+      "EncryptedMessage" => TermDefinition.new("EncryptedMessage", id: "https://w3id.org/security#EncryptedMessage", simple: true),
+      "GraphSignature2012" => TermDefinition.new("GraphSignature2012", id: "https://w3id.org/security#GraphSignature2012", simple: true),
+      "Group" => TermDefinition.new("Group", id: "https://www.w3.org/ns/activitystreams#Group", simple: true),
+      "Identity" => TermDefinition.new("Identity", id: "https://w3id.org/identity#Identity", simple: true),
+      "LinkedDataSignature2015" => TermDefinition.new("LinkedDataSignature2015", id: "https://w3id.org/security#LinkedDataSignature2015", simple: true),
+      "Organization" => TermDefinition.new("Organization", id: "http://schema.org/Organization", simple: true),
+      "Person" => TermDefinition.new("Person", id: "http://schema.org/Person", simple: true),
+      "PostalAddress" => TermDefinition.new("PostalAddress", id: "http://schema.org/PostalAddress", simple: true),
+      "about" => TermDefinition.new("about", id: "http://schema.org/about", type_mapping: "@id"),
+      "accessControl" => TermDefinition.new("accessControl", id: "https://w3id.org/permissions#accessControl", type_mapping: "@id"),
+      "address" => TermDefinition.new("address", id: "http://schema.org/address", type_mapping: "@id"),
+      "addressCountry" => TermDefinition.new("addressCountry", id: "http://schema.org/addressCountry", simple: true),
+      "addressLocality" => TermDefinition.new("addressLocality", id: "http://schema.org/addressLocality", simple: true),
+      "addressRegion" => TermDefinition.new("addressRegion", id: "http://schema.org/addressRegion", simple: true),
+      "cipherAlgorithm" => TermDefinition.new("cipherAlgorithm", id: "https://w3id.org/security#cipherAlgorithm", simple: true),
+      "cipherData" => TermDefinition.new("cipherData", id: "https://w3id.org/security#cipherData", simple: true),
+      "cipherKey" => TermDefinition.new("cipherKey", id: "https://w3id.org/security#cipherKey", simple: true),
+      "claim" => TermDefinition.new("claim", id: "https://w3id.org/credentials#claim", type_mapping: "@id"),
+      "comment" => TermDefinition.new("comment", id: "http://www.w3.org/2000/01/rdf-schema#comment", simple: true),
+      "created" => TermDefinition.new("created", id: "http://purl.org/dc/terms/created", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "creator" => TermDefinition.new("creator", id: "http://purl.org/dc/terms/creator", type_mapping: "@id"),
+      "cred" => TermDefinition.new("cred", id: "https://w3id.org/credentials#", simple: true, prefix: true),
+      "credential" => TermDefinition.new("credential", id: "https://w3id.org/credentials#credential", type_mapping: "@id"),
+      "dc" => TermDefinition.new("dc", id: "http://purl.org/dc/terms/", simple: true, prefix: true),
+      "description" => TermDefinition.new("description", id: "http://schema.org/description", simple: true),
+      "digestAlgorithm" => TermDefinition.new("digestAlgorithm", id: "https://w3id.org/security#digestAlgorithm", simple: true),
+      "digestValue" => TermDefinition.new("digestValue", id: "https://w3id.org/security#digestValue", simple: true),
+      "domain" => TermDefinition.new("domain", id: "https://w3id.org/security#domain", simple: true),
+      "email" => TermDefinition.new("email", id: "http://schema.org/email", simple: true),
+      "expires" => TermDefinition.new("expires", id: "https://w3id.org/security#expiration", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "familyName" => TermDefinition.new("familyName", id: "http://schema.org/familyName", simple: true),
+      "givenName" => TermDefinition.new("givenName", id: "http://schema.org/givenName", simple: true),
+      "id" => TermDefinition.new("id", id: "@id", simple: true),
+      "identity" => TermDefinition.new("identity", id: "https://w3id.org/identity#", simple: true, prefix: true),
+      "identityService" => TermDefinition.new("identityService", id: "https://w3id.org/identity#identityService", type_mapping: "@id"),
+      "idp" => TermDefinition.new("idp", id: "https://w3id.org/identity#idp", type_mapping: "@id"),
+      "image" => TermDefinition.new("image", id: "http://schema.org/image", type_mapping: "@id"),
+      "initializationVector" => TermDefinition.new("initializationVector", id: "https://w3id.org/security#initializationVector", simple: true),
+      "issued" => TermDefinition.new("issued", id: "https://w3id.org/credentials#issued", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "issuer" => TermDefinition.new("issuer", id: "https://w3id.org/credentials#issuer", type_mapping: "@id"),
+      "label" => TermDefinition.new("label", id: "http://www.w3.org/2000/01/rdf-schema#label", simple: true),
+      "member" => TermDefinition.new("member", id: "http://schema.org/member", type_mapping: "@id"),
+      "memberOf" => TermDefinition.new("memberOf", id: "http://schema.org/memberOf", type_mapping: "@id"),
+      "name" => TermDefinition.new("name", id: "http://schema.org/name", simple: true),
+      "nonce" => TermDefinition.new("nonce", id: "https://w3id.org/security#nonce", simple: true),
+      "normalizationAlgorithm" => TermDefinition.new("normalizationAlgorithm", id: "https://w3id.org/security#normalizationAlgorithm", simple: true),
+      "owner" => TermDefinition.new("owner", id: "https://w3id.org/security#owner", type_mapping: "@id"),
+      "password" => TermDefinition.new("password", id: "https://w3id.org/security#password", simple: true),
+      "paymentProcessor" => TermDefinition.new("paymentProcessor", id: "https://w3id.org/payswarm#processor", simple: true),
+      "perm" => TermDefinition.new("perm", id: "https://w3id.org/permissions#", simple: true, prefix: true),
+      "postalCode" => TermDefinition.new("postalCode", id: "http://schema.org/postalCode", simple: true),
+      "preferences" => TermDefinition.new("preferences", id: "https://w3id.org/payswarm#preferences", type_mapping: "@vocab"),
+      "privateKey" => TermDefinition.new("privateKey", id: "https://w3id.org/security#privateKey", type_mapping: "@id"),
+      "privateKeyPem" => TermDefinition.new("privateKeyPem", id: "https://w3id.org/security#privateKeyPem", simple: true),
+      "ps" => TermDefinition.new("ps", id: "https://w3id.org/payswarm#", simple: true, prefix: true),
+      "publicKey" => TermDefinition.new("publicKey", id: "https://w3id.org/security#publicKey", type_mapping: "@id"),
+      "publicKeyPem" => TermDefinition.new("publicKeyPem", id: "https://w3id.org/security#publicKeyPem", simple: true),
+      "publicKeyService" => TermDefinition.new("publicKeyService", id: "https://w3id.org/security#publicKeyService", type_mapping: "@id"),
+      "rdf" => TermDefinition.new("rdf", id: "http://www.w3.org/1999/02/22-rdf-syntax-ns#", simple: true, prefix: true),
+      "rdfs" => TermDefinition.new("rdfs", id: "http://www.w3.org/2000/01/rdf-schema#", simple: true, prefix: true),
+      "recipient" => TermDefinition.new("recipient", id: "https://w3id.org/credentials#recipient", type_mapping: "@id"),
+      "revoked" => TermDefinition.new("revoked", id: "https://w3id.org/security#revoked", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "schema" => TermDefinition.new("schema", id: "http://schema.org/", simple: true, prefix: true),
+      "sec" => TermDefinition.new("sec", id: "https://w3id.org/security#", simple: true, prefix: true),
+      "signature" => TermDefinition.new("signature", id: "https://w3id.org/security#signature", simple: true),
+      "signatureAlgorithm" => TermDefinition.new("signatureAlgorithm", id: "https://w3id.org/security#signatureAlgorithm", simple: true),
+      "signatureValue" => TermDefinition.new("signatureValue", id: "https://w3id.org/security#signatureValue", simple: true),
+      "streetAddress" => TermDefinition.new("streetAddress", id: "http://schema.org/streetAddress", simple: true),
+      "title" => TermDefinition.new("title", id: "http://purl.org/dc/terms/title", simple: true),
+      "type" => TermDefinition.new("type", id: "@type", simple: true),
+      "url" => TermDefinition.new("url", id: "http://schema.org/url", type_mapping: "@id"),
+      "writePermission" => TermDefinition.new("writePermission", id: "https://w3id.org/permissions#writePermission", type_mapping: "@id"),
+      "xsd" => TermDefinition.new("xsd", id: "http://www.w3.org/2001/XMLSchema#", simple: true, prefix: true)
+    })
+  end
+end
diff --git a/lib/json_ld/security.rb b/lib/json_ld/security.rb
new file mode 100644
index 000000000..1230206f0
--- /dev/null
+++ b/lib/json_ld/security.rb
@@ -0,0 +1,50 @@
+# -*- encoding: utf-8 -*-
+# frozen_string_literal: true
+# This file generated automatically from https://w3id.org/security/v1
+require 'json/ld'
+class JSON::LD::Context
+  add_preloaded("https://w3id.org/security/v1") do
+    new(processingMode: "json-ld-1.0", term_definitions: {
+      "CryptographicKey" => TermDefinition.new("CryptographicKey", id: "https://w3id.org/security#Key", simple: true),
+      "EcdsaKoblitzSignature2016" => TermDefinition.new("EcdsaKoblitzSignature2016", id: "https://w3id.org/security#EcdsaKoblitzSignature2016", simple: true),
+      "EncryptedMessage" => TermDefinition.new("EncryptedMessage", id: "https://w3id.org/security#EncryptedMessage", simple: true),
+      "GraphSignature2012" => TermDefinition.new("GraphSignature2012", id: "https://w3id.org/security#GraphSignature2012", simple: true),
+      "LinkedDataSignature2015" => TermDefinition.new("LinkedDataSignature2015", id: "https://w3id.org/security#LinkedDataSignature2015", simple: true),
+      "LinkedDataSignature2016" => TermDefinition.new("LinkedDataSignature2016", id: "https://w3id.org/security#LinkedDataSignature2016", simple: true),
+      "authenticationTag" => TermDefinition.new("authenticationTag", id: "https://w3id.org/security#authenticationTag", simple: true),
+      "canonicalizationAlgorithm" => TermDefinition.new("canonicalizationAlgorithm", id: "https://w3id.org/security#canonicalizationAlgorithm", simple: true),
+      "cipherAlgorithm" => TermDefinition.new("cipherAlgorithm", id: "https://w3id.org/security#cipherAlgorithm", simple: true),
+      "cipherData" => TermDefinition.new("cipherData", id: "https://w3id.org/security#cipherData", simple: true),
+      "cipherKey" => TermDefinition.new("cipherKey", id: "https://w3id.org/security#cipherKey", simple: true),
+      "created" => TermDefinition.new("created", id: "http://purl.org/dc/terms/created", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "creator" => TermDefinition.new("creator", id: "http://purl.org/dc/terms/creator", type_mapping: "@id"),
+      "dc" => TermDefinition.new("dc", id: "http://purl.org/dc/terms/", simple: true, prefix: true),
+      "digestAlgorithm" => TermDefinition.new("digestAlgorithm", id: "https://w3id.org/security#digestAlgorithm", simple: true),
+      "digestValue" => TermDefinition.new("digestValue", id: "https://w3id.org/security#digestValue", simple: true),
+      "domain" => TermDefinition.new("domain", id: "https://w3id.org/security#domain", simple: true),
+      "encryptionKey" => TermDefinition.new("encryptionKey", id: "https://w3id.org/security#encryptionKey", simple: true),
+      "expiration" => TermDefinition.new("expiration", id: "https://w3id.org/security#expiration", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "expires" => TermDefinition.new("expires", id: "https://w3id.org/security#expiration", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "id" => TermDefinition.new("id", id: "@id", simple: true),
+      "initializationVector" => TermDefinition.new("initializationVector", id: "https://w3id.org/security#initializationVector", simple: true),
+      "iterationCount" => TermDefinition.new("iterationCount", id: "https://w3id.org/security#iterationCount", simple: true),
+      "nonce" => TermDefinition.new("nonce", id: "https://w3id.org/security#nonce", simple: true),
+      "normalizationAlgorithm" => TermDefinition.new("normalizationAlgorithm", id: "https://w3id.org/security#normalizationAlgorithm", simple: true),
+      "owner" => TermDefinition.new("owner", id: "https://w3id.org/security#owner", type_mapping: "@id"),
+      "password" => TermDefinition.new("password", id: "https://w3id.org/security#password", simple: true),
+      "privateKey" => TermDefinition.new("privateKey", id: "https://w3id.org/security#privateKey", type_mapping: "@id"),
+      "privateKeyPem" => TermDefinition.new("privateKeyPem", id: "https://w3id.org/security#privateKeyPem", simple: true),
+      "publicKey" => TermDefinition.new("publicKey", id: "https://w3id.org/security#publicKey", type_mapping: "@id"),
+      "publicKeyPem" => TermDefinition.new("publicKeyPem", id: "https://w3id.org/security#publicKeyPem", simple: true),
+      "publicKeyService" => TermDefinition.new("publicKeyService", id: "https://w3id.org/security#publicKeyService", type_mapping: "@id"),
+      "revoked" => TermDefinition.new("revoked", id: "https://w3id.org/security#revoked", type_mapping: "http://www.w3.org/2001/XMLSchema#dateTime"),
+      "salt" => TermDefinition.new("salt", id: "https://w3id.org/security#salt", simple: true),
+      "sec" => TermDefinition.new("sec", id: "https://w3id.org/security#", simple: true, prefix: true),
+      "signature" => TermDefinition.new("signature", id: "https://w3id.org/security#signature", simple: true),
+      "signatureAlgorithm" => TermDefinition.new("signatureAlgorithm", id: "https://w3id.org/security#signingAlgorithm", simple: true),
+      "signatureValue" => TermDefinition.new("signatureValue", id: "https://w3id.org/security#signatureValue", simple: true),
+      "type" => TermDefinition.new("type", id: "@type", simple: true),
+      "xsd" => TermDefinition.new("xsd", id: "http://www.w3.org/2001/XMLSchema#", simple: true, prefix: true)
+    })
+  end
+end