test: anoncreds_demos: revocaable check

Signed-off-by: bwty <whalelephant@users.noreply.github.com>

.gitignore

@@ -1,3 +1,4 @@
 .vscode
 target
 Cargo.lock
+.tmp

anoncreds/src/data_types/anoncreds/rev_reg.rs

@@ -5,7 +5,7 @@ use serde::{
 };
 use std::collections::HashSet;
 
-use crate::{data_types::Validatable, impl_anoncreds_object_identifier};
+use crate::{data_types::Validatable, error, impl_anoncreds_object_identifier};
 use ursa::cl::Accumulator;
 
 impl_anoncreds_object_identifier!(RevocationRegistryId);
@@ -66,7 +66,7 @@ pub struct RevocationList {
 
 impl From<&RevocationList> for ursa::cl::RevocationRegistry {
     fn from(rev_reg_list: &RevocationList) -> ursa::cl::RevocationRegistry {
-        ursa::cl::RevocationRegistry::from_accum(rev_reg_list.current_accum)
+        ursa::cl::RevocationRegistry::from(rev_reg_list.current_accum)
     }
 }
 
@@ -83,19 +83,18 @@ impl RevocationList {
         self.revocation_list.clone()
     }
 
-    #[cfg(test)]
-    fn new(
+    pub fn new(
         rev_reg_id: &str,
         revocation_list: bitvec::vec::BitVec,
-        current_accum: Accumulator,
+        current_reg: ursa::cl::RevocationRegistry,
         timestamp: u64,
-    ) -> Self {
-        Self {
-            rev_reg_id: rev_reg_id.into(),
+    ) -> Result<Self, error::Error> {
+        Ok(Self {
+            rev_reg_id: RevocationRegistryId::new(rev_reg_id)?,
             revocation_list,
-            current_accum,
+            current_accum: current_reg.into(),
             timestamp,
-        }
+        })
     }
 }
 
@@ -171,7 +170,7 @@ mod tests {
     fn test_revocation_list_roundtrip_serde() {
         let state = bitvec![1;4];
         let accum = Accumulator::new().expect("Should be able to create Accumulator");
-        let list = RevocationList::new("reg", state, accum, 1234u64);
+        let list = RevocationList::new("MOCK:uri: reg", state, accum.into(), 1234u64).unwrap();
         let ser = serde_json::to_string(&list).unwrap();
         let des = serde_json::from_str::<RevocationList>(&ser).unwrap();
         let ser2 = serde_json::to_string(&des).unwrap();

anoncreds/src/services/types.rs

@@ -203,9 +203,9 @@ pub(crate) struct ProvingCredentialKey {
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct CredentialRevocationState {
-    pub(crate) witness: Witness,
-    pub(crate) rev_reg: CryptoRevocationRegistry,
-    pub(crate) timestamp: u64,
+    pub witness: Witness,
+    pub rev_reg: CryptoRevocationRegistry,
+    pub timestamp: u64,
 }
 
 impl Validatable for CredentialRevocationState {

anoncreds/src/services/verifier.rs

@@ -69,6 +69,8 @@ pub fn verify_presentation(
         &received_self_attested_attrs,
     )?;
 
+    // makes sure the for revocable request or attribute,
+    // there is a timestamp in the `Identifier`
     compare_timestamps_from_proof_and_request(
         pres_req,
         &received_revealed_attrs,
@@ -111,6 +113,7 @@ pub fn verify_presentation(
                 ));
             }
 
+            // Revocation registry definition id is the same as the rev reg id
             let rev_reg_def_id = RevocationRegistryDefinitionId::new(rev_reg_id.clone())?;
             let rev_reg_def = Some(
                 rev_reg_defs
@@ -302,6 +305,8 @@ fn compare_attr_from_proof_and_request(
     Ok(())
 }
 
+// This does not actually compare the non_revoke interval
+// see `validate_timestamp` function comments
 fn compare_timestamps_from_proof_and_request(
     pres_req: &PresentationRequestPayload,
     received_revealed_attrs: &HashMap<String, Identifier>,
@@ -352,6 +357,19 @@ fn compare_timestamps_from_proof_and_request(
     Ok(())
 }
 
+// This validates that a timestamp is given if either:
+// - the `global_interval` rev requirement
+// - the `local_interval` rev requirement
+// from the PresentationRequest are satisfied.
+//
+// If either the attribute nor the request has a revocation internal
+// i.e. they are non-revocable, then `OK` is returned directly.
+//
+// Otherwise the Identifier for the referent (attribute) has to have a timestamp,
+// which was added by the prover when creating `PresentCredentials`,
+// an arg for `create_presentation`. 
+// 
+// TODO: this timestamp should be compared with the provided interval
 fn validate_timestamp(
     received_: &HashMap<String, Identifier>,
     referent: &str,