W3C: Reworked predicates representation - no mapping

Cargo.toml

@@ -27,7 +27,7 @@ vendored = ["anoncreds-clsignatures/openssl_vendored"]
 w3c = ["base64", "chrono", "rmp-serde"]
 
 [dependencies]
-anoncreds-clsignatures = "0.3.0"
+anoncreds-clsignatures = "0.3.1"
 bs58 = "0.4.0"
 env_logger = { version = "0.9.3", optional = true }
 ffi-support = { version = "0.4.0", optional = true }

src/data_types/pres_request.rs

@@ -1,3 +1,4 @@
+use anoncreds_clsignatures::PredicateType;
 use std::collections::HashMap;
 use std::fmt;
 
@@ -219,6 +220,17 @@ impl fmt::Display for PredicateTypes {
     }
 }
 
+impl From<PredicateTypes> for PredicateType {
+    fn from(value: PredicateTypes) -> Self {
+        match value {
+            PredicateTypes::GE => PredicateType::GE,
+            PredicateTypes::GT => PredicateType::GT,
+            PredicateTypes::LE => PredicateType::LE,
+            PredicateTypes::LT => PredicateType::LT,
+        }
+    }
+}
+
 #[derive(Clone, Debug, PartialEq, Eq, Deserialize, Serialize)]
 pub struct RequestedAttributeInfo {
     pub attr_referent: String,

src/data_types/w3c/credential_attributes.rs

@@ -1,4 +1,3 @@
-use crate::data_types::w3c::presentation::PredicateAttribute;
 use crate::error::ValidationError;
 use crate::types::{CredentialValues, MakeCredentialValues};
 use crate::utils::validation::Validatable;
@@ -59,23 +58,20 @@ impl CredentialAttributes {
         self.0.insert(attribute, value);
     }
 
-    pub(crate) fn add_predicate(
-        &mut self,
-        attribute: String,
-        predicate: PredicateAttribute,
-    ) -> crate::Result<()> {
-        match self.0.get_mut(&attribute) {
+    pub(crate) fn add_predicate(&mut self, attribute: String) -> crate::Result<()> {
+        match self.0.get(&attribute) {
             Some(value) => match value {
                 CredentialAttributeValue::Attribute(_) => {
                     return Err(err_msg!("Predicate cannot be added for revealed attribute"));
                 }
-                CredentialAttributeValue::Predicate(predicates) => predicates.push(predicate),
+                CredentialAttributeValue::Predicate(_) => {
+                    // predicate already exists
+                    return Ok(());
+                }
             },
             None => {
-                self.0.insert(
-                    attribute,
-                    CredentialAttributeValue::Predicate(vec![predicate]),
-                );
+                self.0
+                    .insert(attribute, CredentialAttributeValue::Predicate(true));
             }
         }
         Ok(())
@@ -104,5 +100,5 @@ impl CredentialAttributes {
 #[serde(untagged)]
 pub enum CredentialAttributeValue {
     Attribute(String),
-    Predicate(Vec<PredicateAttribute>),
+    Predicate(bool),
 }

src/data_types/w3c/presentation.rs

@@ -1,4 +1,3 @@
-use crate::data_types::pres_request::{PredicateInfo, PredicateTypes};
 use serde::{Deserialize, Serialize};
 
 use crate::data_types::w3c::constants::ANONCREDS_PRESENTATION_TYPES;
@@ -63,33 +62,3 @@ impl W3CPresentation {
         Ok(())
     }
 }
-
-#[derive(Clone, Debug, Eq, PartialEq, Deserialize, Serialize)]
-pub struct PredicateAttribute {
-    #[serde(rename = "type")]
-    pub type_: PredicateAttributeType,
-    pub predicate: PredicateTypes,
-    pub value: i32,
-}
-
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
-pub enum PredicateAttributeType {
-    #[serde(rename = "AnonCredsPredicate")]
-    AnonCredsPredicate,
-}
-
-impl Default for PredicateAttributeType {
-    fn default() -> Self {
-        PredicateAttributeType::AnonCredsPredicate
-    }
-}
-
-impl From<PredicateInfo> for PredicateAttribute {
-    fn from(info: PredicateInfo) -> Self {
-        PredicateAttribute {
-            type_: PredicateAttributeType::AnonCredsPredicate,
-            predicate: info.p_type,
-            value: info.p_value,
-        }
-    }
-}

src/data_types/w3c/proof.rs

@@ -304,7 +304,37 @@ pub(crate) mod tests {
                     },
                     "v":"241132863422049783305938040060597331735278274539541049316128678268379301866997158072011728743321723078574060931449243960464715113938435991871547190135480379265493203441002211218757120311064385792274455797457074741542288420192538286547871288116110058144080647854995527978708188991483561739974917309498779192480418427060775726652318167442183177955447797995160859302520108340826199956754805286213211181508112097818654928169122460464135690611512133363376553662825967455495276836834812520601471833287810311342575033448652033691127511180098524259451386027266077398672694996373787324223860522678035901333613641370426224798680813171225438770578377781015860719028452471648107174226406996348525110692233661632116547069810544117288754524961349911209241835217711929316799411645465546281445291569655422683908113895340361971530636987203042713656548617543163562701947578529101436799250628979720035967402306966520999250819096598649121167"
                 },
-                "ge_proofs":[]
+                "ge_proofs":[
+                    {
+                       "alpha":"91220714671444392049098338684790704633533569564315230075539856448338492680812282072362540735427809388270066455205446617374273995782554023377399804680731177040820232234103905929245544987284390459421201350502799357084572144630393229752965186421948202493395713653211261041852571798619503895533346500039830736972086153800117378029361886647047095376275665663965834031955496258448997095624866059846872981856675389692109959092094806511454852995405728568479147049053492114956054980496971797079430191367299794264478249696184662697292162371750117069888618647245378182107893472040860186518606846123082528380203115122049346720684632822988124624232104408068871143529062290368275811065489280640284628547286984413518627275012302744149723004365305203107751097864041449256066333845275140021245574457318613498147991578104948027924350075803209003472770171508",
+                       "mj":"10619618416826273180397098803657766447651768379400923597030398076034183761672856302638410567535231814845543058601785335204535280819985764784669686133824906415128411093552997221368",
+                       "predicate":{
+                          "attr_name":"age",
+                          "p_type":"GE",
+                          "value":18
+                       },
+                       "r":{
+                          "0":"1588773841780214552359776199576628657422386379581875893884372384945078939367811669090633715735973102089830616387572913590903177855451313150803976101815197814546943692782886723295746289356733941843720702593284085499174918510800622738993820307452003642209484819110747316677067093332440085440025164455806240551962801578883036541149230246370241587135313625002361803674314220240325030115679027145118594398919147306855967972213149349618757473914836569589409360381363133999563340224289773423298061372462452654469527456288604836354940362627104777524515399631756958068413497302427594449392887094786817130374459442258515737158811686608247853699920092770291702232183843727566921363528103710173784544959052443469285368754401657196",
+                          "1":"1256637461243595604322863152096695336988741930946020430733567407182983540413613586145869057743579927372473885067510018613665224897849401692855807875596945318002448112389712134976382615924445697735114266283359186511759922024528029759666589075823639433029347021711617386390388119939639554649246510017374304289842894121976296696383665849531200028223642037058012440962161711327633361506751679881935716365348597650188385003189685455873956352275864507358751108468616792212883072002977937356183984733305883101734940610235124050728483164184768583108042582305043633880442432266261059349235842130246766593025175585949268421893519917461893052466099961687152805398299274146695036237567981404300725384720284767733503300712690230066",
+                          "2":"1180470752287078364045027938881431613908286199987885445191097018463514753226258434971970185913902638482837033208536492358985171746629207883670533746365587515021341605180977408566855989917724250395423339932092420398421191723451854001132891740727213359926397393866003819102156139645294868568720892107454597994399663270849626034194812335352358683129740790900198708737271280718525529045149216850592542049021883013759819845832517077594258837166386555069713745897243088088130250768210556913814239420667349881002746337249159009429446096267443703716720519147423788417467630700941214871833654279244114934863266782981572888619570061750211802733422965672862460857370701115334422790171062624083846772286688851070554099303963921104",
+                          "3":"1554750004410378527983822806396206150464097753774479793235223765194888527957776464556761722575086189610621769436280902828919918551500848757948401036034758232620903277502984809681150532613764145652533551203089474969485186034939651354452101784526177955451238190690104076761670672401174038610412812526020744038000502620834777200034105678723861330359048143413197833551785458979800481541528932013012871846192835556374129289856524600042093496469951221267239541036695781151538783592366750845197652975087446697387386311902873270860149765323323187433441607423920187284116094929609221567374838533141008330348008068772941193691271050660162302081076236856953603634061067389248305683590442781682491548673677254798771710885037796659",
+                          "DELTA":"1591114056356953008302389836487088294824152830750916368566265981893546977236615844801936236823422986263596737827206475075016247008711981755783323755057168890433204544347517827221359538571606352035283603183519055880349734991132973043683139771266391445623003841750375768863170117737306760487644386418014467864235824811986915610106599990309382168306174519569960373054711786607068624060933746910803303786482726306172443849393961664884433192775912375242311944208345972180566879252202193002582502332472161772185829653341558236501172811022440617874812946623249952881355038481568373284396730255846889188942800549892176796330313537049720141217138331376836082910824922102630062526235501539331525707791179105054842938922082273341"
+                       },
+                       "t":{
+                          "0":"64866996697789195209280610141661958251568008114948414934413958296971339012889321602743229534701276778987450376839584381564432237982467665325878769345568644118005387300780740353119586313215268801420656057929003191994949238757497970606857982612190953040166976139020384044674984753007915757233780798405084657312596339298214440966181148595394143651090062868272637661599156374401948677255896118592942051029425966532644474294261068933998155420437467426800184193783489247605940353558912734022194504744614576990377832513342220548575580079569434063529465779643924541222580028865234979421406039311319392788727862833372661812079",
+                          "1":"67303978424359582715108363896151264391768399044745955395288155914114263062414166017940570134013652095220132600639211498623236325803113232769613832542046971180853882781339367205952142717758262234340067056755607062165703827148360166612839585924791432604865318898396310692070583836581734207887652888544729655037417276262346412915175935713397032895503260779806300967606578152659383022978757619384247504049549400918184711168027828295536608102556236260070926784249029255670389326662927138230386472848194253812563583749887864868539756587998651377854124493763184412004468888027472328169903649172001104488180406594526088065364",
+                          "2":"18436150017847362148503422934807623982558815194978492560526315168833670353679306438499002886985324139611559716808905964012901082839923805866332404521363415208828633794588913271582024302442760509341860860452135384881748467914499903893497021322668173317724455347588723088645268399003636488636255170578169602866806870175728380227213849553021449146855307562973456748083976082888488765887213872710497047213304951072622398573443877599885784967211283713595363564060299966480075439924341684314227193969890983198284879899534016462786708400323988903624076030501131051782105520306583282647892201684723226256941851600164798261880",
+                          "3":"80540787074475770948660676781681004318473659262891446094891575133006197034890969100212418274423711067808416693520604223042156316702551364570788698259945859278631567782188001291620437568959698091422096339806965811163965272534011394991383654588148424651132454462060754800885777955043665365498632157797055058151411264229226312327674056428967625747209116555960361444208812300676158339558611501661414801144395602242708550065513573607276358638179403543703279653212854355283229216684185613541665048996953524052618105804915972281524980080258106845176656276743289508024830814580864628715844679439025023554817148003637660059887",
+                          "DELTA":"38128302244645018703614537759663050901282421681496452389916789850297775528223375163975708479447627776714574447185672092288753220297481568686299394510463089778981483516150456298091794185362061077601863665101246931716529026964302951763043406542033213721811976816002462606153992893712899928899436878697876337417072593686060699133798221124684368093425078651290877250512092087658564967995284650495307815179709968706695989964533230783143390286689612896716897737374321292841418619819673977548636000164967688437443605065985702273593701939206841156162246473653997008652142246744504615370364717636163329586868597033790427165825"
+                       },
+                       "u":{
+                          "0":"6426124753400912236632328522015044090086922220319370716985855652608326099686652357532800961549405711164418863901623019555846606630251161505603206034811202965910995811690795138214",
+                          "1":"3909215487926900168604769541427083916058262011373000358888936014541302480601270653036273837969290381956761016976440071404509435892364951044838810885942402174245287406904366305456",
+                          "2":"7652194204529394001615049073842780065526835674980893677706271902982921524392585624184469677898007893338946001313177343952762715670988112050727645115894537310867340212405807178105",
+                          "3":"1041238499986953151033833015824013914006748060477385128094301887263879042479529065682677955278085858226310034138770368152097812384789680952282311296092825182415553982591317576772"
+                       }
+                    }
+                 ]
             }
         })).unwrap()
     }

src/services/helpers.rs

@@ -2,7 +2,6 @@ use crate::cl::{
     bn::BigNumber, CredentialSchema, CredentialValues as CLCredentialValues, Issuer,
     NonCredentialSchema, SubProofRequest, Verifier,
 };
-use crate::data_types::pres_request::{PredicateTypes, PredicateValue};
 use crate::data_types::presentation::RequestedProof;
 use crate::data_types::rev_reg_def::RevocationRegistryDefinitionId;
 use crate::data_types::schema::Schema;
@@ -14,6 +13,7 @@ use crate::data_types::{
 };
 use crate::error::Result;
 use crate::utils::hash::SHA256;
+use anoncreds_clsignatures::Predicate;
 use std::collections::{HashMap, HashSet};
 
 pub fn attr_common_view(attr: &str) -> String {
@@ -88,8 +88,8 @@ pub fn encode_credential_attribute(raw_value: &str) -> Result<String> {
 }
 
 pub fn build_sub_proof_request(
-    attrs_for_credential: &[String],
-    predicates_for_credential: &HashMap<String, (PredicateTypes, PredicateValue)>,
+    attrs_for_credential: &Vec<String>,
+    predicates_for_credential: &Vec<Predicate>,
 ) -> Result<SubProofRequest> {
     trace!(
         "build_sub_proof_request >>> attrs_for_credential: {:?}, predicates_for_credential: {:?}",
@@ -103,10 +103,14 @@ pub fn build_sub_proof_request(
         sub_proof_request_builder.add_revealed_attr(&attr_common_view(attr))?;
     }
 
-    for (name, (p_type, p_value)) in predicates_for_credential {
-        let p_type = format!("{}", p_type);
+    for predicate in predicates_for_credential {
+        let p_type = format!("{:?}", predicate.p_type);
 
-        sub_proof_request_builder.add_predicate(&attr_common_view(name), &p_type, *p_value)?;
+        sub_proof_request_builder.add_predicate(
+            &attr_common_view(&predicate.attr_name),
+            &p_type,
+            predicate.value,
+        )?;
     }
 
     let res = sub_proof_request_builder.finalize()?;
@@ -231,18 +235,13 @@ impl PresentationRequestPayload {
         Ok((attributes, non_revoked_interval))
     }
 
-    #[allow(clippy::type_complexity)]
     pub(crate) fn get_requested_predicates(
         &self,
         referents: &HashSet<String>,
-    ) -> Result<(
-        HashMap<String, (PredicateTypes, PredicateValue)>,
-        Option<NonRevokedInterval>,
-    )> {
+    ) -> Result<(Vec<Predicate>, Option<NonRevokedInterval>)> {
         trace!("get_requested_predicates >>> referents: {:?}", referents);
         let mut non_revoked_interval: Option<NonRevokedInterval> = None;
-        let mut predicates: HashMap<String, (PredicateTypes, PredicateValue)> =
-            HashMap::with_capacity(self.requested_predicates.len());
+        let mut predicates: Vec<Predicate> = Vec::with_capacity(self.requested_predicates.len());
 
         for referent in referents {
             let requested = self
@@ -259,7 +258,11 @@ impl PresentationRequestPayload {
                     None => non_revoked_interval = Some(int.clone()),
                 }
             }
-            predicates.insert(requested.name, (requested.p_type, requested.p_value));
+            predicates.push(Predicate {
+                attr_name: requested.name,
+                p_type: requested.p_type.into(),
+                value: requested.p_value,
+            });
         }
 
         trace!(

src/services/verifier.rs

@@ -9,8 +9,8 @@ use crate::data_types::cred_def::CredentialDefinition;
 use crate::data_types::cred_def::CredentialDefinitionId;
 use crate::data_types::issuer_id::IssuerId;
 use crate::data_types::nonce::Nonce;
+use crate::data_types::pres_request::PresentationRequestPayload;
 use crate::data_types::pres_request::{AttributeInfo, NonRevokedInterval};
-use crate::data_types::pres_request::{PredicateTypes, PredicateValue, PresentationRequestPayload};
 use crate::data_types::presentation::{Identifier, RequestedProof};
 use crate::data_types::rev_reg_def::RevocationRegistryDefinitionId;
 use crate::data_types::schema::Schema;
@@ -105,10 +105,8 @@ pub fn verify_presentation(
             .requested_proof
             .get_predicates_for_credential(sub_proof_index as u32);
 
-        let (attributes, attrs_nonrevoked_interval) =
-            pres_req.get_requested_attributes(&attributes)?;
-        let (predicates, pred_nonrevoked_interval) =
-            pres_req.get_requested_predicates(&predicates)?;
+        let (_, attrs_nonrevoked_interval) = pres_req.get_requested_attributes(&attributes)?;
+        let (_, pred_nonrevoked_interval) = pres_req.get_requested_predicates(&predicates)?;
 
         {
             check_non_revoked_interval(
@@ -123,8 +121,7 @@ pub fn verify_presentation(
         }
 
         proof_verifier.add_sub_proof(
-            &attributes,
-            &predicates,
+            &presentation.proof.proofs[sub_proof_index],
             &identifier.schema_id,
             &identifier.cred_def_id,
             identifier.rev_reg_id.as_ref(),
@@ -851,8 +848,7 @@ impl<'a> CLProofVerifier<'a> {
     #[allow(clippy::too_many_arguments)]
     pub(crate) fn add_sub_proof(
         &mut self,
-        attributes: &[String],
-        predicates: &HashMap<String, (PredicateTypes, PredicateValue)>,
+        sub_proof: &SubProof,
         schema_id: &SchemaId,
         cred_def_id: &CredentialDefinitionId,
         rev_reg_def_id: Option<&RevocationRegistryDefinitionId>,
@@ -867,7 +863,11 @@ impl<'a> CLProofVerifier<'a> {
             &cred_def.value.primary,
             cred_def.value.revocation.as_ref(),
         )?;
-        let sub_pres_request = build_sub_proof_request(attributes, predicates)?;
+
+        let attributes: Vec<String> = sub_proof.revealed_attrs()?.keys().cloned().collect();
+        let predicates = sub_proof.predicates();
+
+        let sub_pres_request = build_sub_proof_request(&attributes, &predicates)?;
         let rev_key_pub = rev_reg_def.map(|d| &d.value.public_keys.accum_key);
         self.proof_verifier.add_sub_proof_request(
             &sub_pres_request,