input-output-hk
diff --git a/‎.github/workflows/semantic_pull_request.yml‎
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diff --git a/‎rust/Cargo.toml‎
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diff --git a/‎rust/Earthfile‎
Lines changed: 2 additions & 1 deletion b/‎rust/Earthfile‎
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diff --git a/‎rust/rbac-registration/Cargo.toml‎
Lines changed: 36 additions & 0 deletions b/‎rust/rbac-registration/Cargo.toml‎
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diff --git a/‎rust/rbac-registration/src/cardano/cip509/mod.rs‎
Lines changed: 218 additions & 0 deletions b/‎rust/rbac-registration/src/cardano/cip509/mod.rs‎
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@@ -24,6 +24,7 @@ jobs:
         rust/vote-tx-v2
         rust/cbork
         rust/hermes-ipfs
+        rust/rbac-registration
         dart
         docs
         general
@@ -12,6 +12,7 @@ members = [
     "immutable-ledger",
     "vote-tx-v1",
     "vote-tx-v2",
+    "rbac-registration",
 ]
 
 [workspace.package]
 
@@ -13,6 +13,7 @@ COPY_SRC:
         catalyst-voting vote-tx-v1 vote-tx-v2 \
         cbork cbork-abnf-parser cbork-cddl-parser \
         hermes-ipfs \
+        rbac-registration \
         immutable-ledger .
 
 # builder : Set up our target toolchains, and copy our files.
@@ -54,7 +55,7 @@ build:
         --args1="--libs=c509-certificate --libs=cardano-chain-follower --libs=hermes-ipfs" \
         --args2="--libs=cbork-cddl-parser --libs=cbork-abnf-parser" \
         --args3="--libs=catalyst-voting --libs=vote-tx-v1 --libs=vote-tx-v2" \
-        --args4="--bins=cbork/cbork" \
+        --args4="--bins=cbork/cbork --libs=rbac-registration" \
         --args5="--cov_report=$HOME/build/coverage-report.info" \
         --output="release/[^\./]+" \
         --junit="cat-libs.junit-report.xml" \
 
@@ -0,0 +1,36 @@
+[package]
+name = "rbac-registration"
+description = "Role Based Access Control Registration"
+keywords = ["cardano", "catalyst", "rbac registration"]
+version = "0.0.1"
+authors = [
+    "Arissara Chotivichit <[email protected]>"
+]
+edition.workspace = true
+license.workspace = true
+homepage.workspace = true
+repository.workspace = true
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[lints]
+workspace = true
+
+[dependencies]
+hex = "0.4.3"
+anyhow = "1.0.89"
+strum_macros = "0.26.4"
+regex = "1.11.0"
+minicbor = { version = "0.25.1", features = ["alloc", "derive", "half"] }
+brotli = "7.0.0"
+zstd = "0.13.2"
+x509-cert = "0.2.5"
+der-parser = "9.0.0"
+bech32 = "0.11.0"
+dashmap = "6.1.0"
+blake2b_simd = "1.0.2"
+tracing = "0.1.40"
+
+c509-certificate = { version = "0.0.3", git = "https://github.com/input-output-hk/catalyst-libs.git" , tag = "v0.0.3" }
+pallas = { version = "0.30.1", git = "https://github.com/input-output-hk/catalyst-pallas.git", rev = "9b5183c8b90b90fe2cc319d986e933e9518957b3" }
@@ -0,0 +1,218 @@
+//! Cardano Improvement Proposal 509 (CIP-509) metadata module.
+//! Doc Reference: <https://github.com/input-output-hk/catalyst-CIPs/tree/x509-envelope-metadata/CIP-XXXX>
+//! CDDL Reference: <https://github.com/input-output-hk/catalyst-CIPs/blob/x509-envelope-metadata/CIP-XXXX/x509-envelope.cddl>
+
+// cspell: words pkix
+
+pub mod rbac;
+pub(crate) mod utils;
+pub(crate) mod validation;
+pub mod x509_chunks;
+
+use minicbor::{
+    decode::{self},
+    Decode, Decoder,
+};
+use pallas::{crypto::hash::Hash, ledger::traverse::MultiEraTx};
+use strum_macros::FromRepr;
+use validation::{
+    validate_aux, validate_payment_key, validate_role_singing_key, validate_stake_public_key,
+    validate_txn_inputs_hash,
+};
+use x509_chunks::X509Chunks;
+
+use super::transaction::witness::TxWitness;
+use crate::utils::{
+    decode_helper::{decode_bytes, decode_helper, decode_map_len},
+    general::{decode_utf8, decremented_index},
+    hashing::{blake2b_128, blake2b_256},
+};
+
+/// CIP509 label.
+pub const LABEL: u64 = 509;
+
+/// CIP509.
+#[derive(Debug, PartialEq, Clone, Default)]
+pub struct Cip509 {
+    /// `UUIDv4` Purpose .
+    pub purpose: UuidV4, // (bytes .size 16)
+    /// Transaction inputs hash.
+    pub txn_inputs_hash: TxInputHash, // bytes .size 16
+    /// Optional previous transaction ID.
+    pub prv_tx_id: Option<Hash<32>>, // bytes .size 32
+    /// x509 chunks.
+    pub x509_chunks: X509Chunks, // chunk_type => [ + x509_chunk ]
+    /// Validation signature.
+    pub validation_signature: Vec<u8>, // bytes size (1..64)
+}
+
+/// `UUIDv4` representing in 16 bytes.
+#[derive(Debug, PartialEq, Clone, Default)]
+pub struct UuidV4([u8; 16]);
+
+impl From<[u8; 16]> for UuidV4 {
+    fn from(bytes: [u8; 16]) -> Self {
+        UuidV4(bytes)
+    }
+}
+
+impl TryFrom<Vec<u8>> for UuidV4 {
+    type Error = &'static str;
+
+    fn try_from(vec: Vec<u8>) -> Result<Self, Self::Error> {
+        if vec.len() == 16 {
+            let mut array = [0u8; 16];
+            array.copy_from_slice(&vec);
+            Ok(UuidV4(array))
+        } else {
+            Err("Input Vec must be exactly 16 bytes")
+        }
+    }
+}
+
+/// Transaction input hash representing in 16 bytes.
+#[derive(Debug, PartialEq, Clone, Default)]
+pub struct TxInputHash([u8; 16]);
+
+impl From<[u8; 16]> for TxInputHash {
+    fn from(bytes: [u8; 16]) -> Self {
+        TxInputHash(bytes)
+    }
+}
+
+impl TryFrom<Vec<u8>> for TxInputHash {
+    type Error = &'static str;
+
+    fn try_from(vec: Vec<u8>) -> Result<Self, Self::Error> {
+        if vec.len() == 16 {
+            let mut array = [0u8; 16];
+            array.copy_from_slice(&vec);
+            Ok(TxInputHash(array))
+        } else {
+            Err("Input Vec must be exactly 16 bytes")
+        }
+    }
+}
+
+/// Enum of CIP509 metadatum with its associated unsigned integer value.
+#[allow(clippy::module_name_repetitions)]
+#[derive(FromRepr, Debug, PartialEq)]
+#[repr(u8)]
+pub(crate) enum Cip509IntIdentifier {
+    /// Purpose.
+    Purpose = 0,
+    /// Transaction inputs hash.
+    TxInputsHash = 1,
+    /// Previous transaction ID.
+    PreviousTxId = 2,
+    /// Validation signature.
+    ValidationSignature = 99,
+}
+
+impl Decode<'_, ()> for Cip509 {
+    fn decode(d: &mut Decoder, ctx: &mut ()) -> Result<Self, decode::Error> {
+        let map_len = decode_map_len(d, "CIP509")?;
+        let mut cip509_metadatum = Cip509::default();
+        for _ in 0..map_len {
+            // Use probe to peak
+            let key = d.probe().u8()?;
+            if let Some(key) = Cip509IntIdentifier::from_repr(key) {
+                // Consuming the int
+                let _: u8 = decode_helper(d, "CIP509", ctx)?;
+                match key {
+                    Cip509IntIdentifier::Purpose => {
+                        cip509_metadatum.purpose =
+                            UuidV4::try_from(decode_bytes(d, "CIP509 purpose")?).map_err(|_| {
+                                decode::Error::message("Invalid data size of Purpose")
+                            })?;
+                    },
+                    Cip509IntIdentifier::TxInputsHash => {
+                        cip509_metadatum.txn_inputs_hash =
+                            TxInputHash::try_from(decode_bytes(d, "CIP509 txn inputs hash")?)
+                                .map_err(|_| {
+                                    decode::Error::message("Invalid data size of TxInputsHash")
+                                })?;
+                    },
+                    Cip509IntIdentifier::PreviousTxId => {
+                        let prv_tx_hash: [u8; 32] = decode_bytes(d, "CIP509 previous tx ID")?
+                            .try_into()
+                            .map_err(|_| {
+                                decode::Error::message("Invalid data size of PreviousTxId")
+                            })?;
+                        cip509_metadatum.prv_tx_id = Some(Hash::from(prv_tx_hash));
+                    },
+                    Cip509IntIdentifier::ValidationSignature => {
+                        let validation_signature = decode_bytes(d, "CIP509 validation signature")?;
+                        if validation_signature.is_empty() || validation_signature.len() > 64 {
+                            return Err(decode::Error::message(
+                                "Invalid data size of ValidationSignature",
+                            ));
+                        }
+                        cip509_metadatum.validation_signature = validation_signature;
+                    },
+                }
+            } else {
+                // Handle the x509 chunks 10 11 12
+                let x509_chunks = X509Chunks::decode(d, ctx)?;
+                cip509_metadatum.x509_chunks = x509_chunks;
+            }
+        }
+        Ok(cip509_metadatum)
+    }
+}
+
+impl Cip509 {
+    /// Basic validation for CIP509
+    /// The validation include the following:
+    /// * Hashing the transaction inputs within the transaction should match the
+    ///   txn-inputs-hash
+    /// * Auxiliary data hash within the transaction should match the hash of the
+    ///   auxiliary data itself.
+    /// * Public key validation for role 0 where public key extracted from x509 and c509
+    ///   subject alternative name should match one of the witness in witness set within
+    ///   the transaction.
+    /// * Payment key reference validation for role 0 where the reference should be either
+    ///     1. Negative index reference - reference to transaction output in transaction:
+    ///        should match some of the key within witness set.
+    ///     2. Positive index reference - reference to the transaction input in
+    ///        transaction: only check whether the index exist within the transaction
+    ///        inputs.
+    /// * Role signing key validation for role 0 where the signing keys should only be the
+    ///   certificates
+    ///
+    ///  See:
+    /// * <https://github.com/input-output-hk/catalyst-CIPs/tree/x509-envelope-metadata/CIP-XXXX>
+    /// * <https://github.com/input-output-hk/catalyst-CIPs/blob/x509-envelope-metadata/CIP-XXXX/x509-envelope.cddl>
+    ///
+    /// Note: This CIP509 is still under development and is subject to change.
+    ///
+    /// # Parameters
+    /// * `txn` - Transaction data was attached to and to be validated/decoded against.
+    /// * `validation_report` - Validation report to store the validation result.
+    pub fn validate(&self, txn: &MultiEraTx, validation_report: &mut Vec<String>) -> bool {
+        let tx_input_validate =
+            validate_txn_inputs_hash(self, txn, validation_report).unwrap_or(false);
+        let aux_validate = validate_aux(txn, validation_report).unwrap_or(false);
+        let mut stake_key_validate = true;
+        let mut payment_key_validate = true;
+        let mut signing_key = true;
+        // Validate the role 0
+        if let Some(role_set) = &self.x509_chunks.0.role_set {
+            // Validate only role 0
+            for role in role_set {
+                if role.role_number == 0 {
+                    stake_key_validate =
+                        validate_stake_public_key(self, txn, validation_report).unwrap_or(false);
+                    payment_key_validate =
+                        validate_payment_key(txn, role, validation_report).unwrap_or(false);
+                    signing_key = validate_role_singing_key(role, validation_report);
+                }
+            }
+        }
+        tx_input_validate
+            && aux_validate
+            && stake_key_validate
+            && payment_key_validate
+            && signing_key
+    }
+}
Original file line number	Diff line number	Diff line change
`@@ -12,6 +12,7 @@ members = [`
`12`	`12`	`"immutable-ledger",`
`13`	`13`	`"vote-tx-v1",`
`14`	`14`	`"vote-tx-v2",`
	`15`	`+ "rbac-registration",`
`15`	`16`	`]`
`16`	`17`
`17`	`18`	`[workspace.package]`