feat(core): SLIP-24 payment requests for Cardano

diff --git a/common/protob/messages-cardano.proto b/common/protob/messages-cardano.proto
index 857a8f95..0f93004c 100644
--- a/common/protob/messages-cardano.proto
+++ b/common/protob/messages-cardano.proto
@@ -6,6 +6,7 @@ option java_package = "com.satoshilabs.trezor.lib.protobuf";
 option java_outer_classname = "TrezorMessageCardano";
 
 import "messages-common.proto";
+import "options.proto";
 
 enum CardanoDerivationType {
     LEDGER = 0;
@@ -237,6 +238,7 @@ message CardanoSignTxInit {
     optional uint32 reference_inputs_count = 21 [default=0];
     optional bool chunkify = 22;                                // display the address in chunks of 4 characters
     optional bool tag_cbor_sets = 23 [default=false];           // use tag 258 for sets in cbor
+    optional common.PaymentRequest payment_req = 24 [(experimental_field)=true]; // SLIP-24 payment request
 }
 
 /**
diff --git a/common/tests/fixtures/cardano/sign_tx.slip24.failed.json b/common/tests/fixtures/cardano/sign_tx.slip24.failed.json
new file mode 100644
index 00000000..d40d6f42
--- /dev/null
+++ b/common/tests/fixtures/cardano/sign_tx.slip24.failed.json
@@ -0,0 +1,53 @@
+{
+  "setup": {
+    "mnemonic": "all all all all all all all all all all all all",
+    "passphrase": ""
+  },
+  "tests": [
+    {
+      "description": "Swap - multiple outputs",
+      "parameters": {
+        "protocol_magic": 764824073,
+        "network_id": 1,
+        "fee": 42,
+        "ttl": 10,
+        "validity_interval_start": null,
+        "certificates": [],
+        "withdrawals": [],
+        "auxiliary_data": null,
+        "inputs": [
+          {
+            "path": "m/44'/1815'/0'/0/1",
+            "prev_hash": "1af8fa0b754ff99253d983894e63a2b09cbb56c833ba18c3384210163f63dcfc",
+            "prev_index": 0
+          }
+        ],
+        "outputs": [
+          {
+            "address": "Ae2tdPwUPEZCanmBz5g2GEwFqKTKpNJcGYPKfDxoNeKZ8bRHr8366kseiK2",
+            "amount": "3003112"
+          },
+          {
+            "address": "2657WMsDfac7BteXkJq5Jzdog4h47fPbkwUM49isuWbYAr2cFRHa3rURP236h9PBe",
+            "amount": "1001234"
+          }
+        ],
+        "mint": [],
+        "script_data_hash": null,
+        "collateral_inputs": [],
+        "required_signers": [],
+        "collateral_return": null,
+        "total_collateral": null,
+        "reference_inputs": [],
+        "signing_mode": "ORDINARY_TRANSACTION",
+        "additional_witness_requests": [],
+        "include_network_id": false,
+        "tag_cbor_sets": false,
+        "payment_req": true
+      },
+      "result": {
+        "error_message": "Multiple outputs not supported for payment requests"
+      }
+    }
+  ]
+}
diff --git a/common/tests/fixtures/cardano/sign_tx.slip24.json b/common/tests/fixtures/cardano/sign_tx.slip24.json
new file mode 100644
index 00000000..72c5df15
--- /dev/null
+++ b/common/tests/fixtures/cardano/sign_tx.slip24.json
@@ -0,0 +1,57 @@
+{
+  "setup": {
+    "mnemonic": "all all all all all all all all all all all all",
+    "passphrase": ""
+  },
+  "tests": [
+    {
+      "description": "Swap",
+      "parameters": {
+        "protocol_magic": 764824073,
+        "network_id": 1,
+        "fee": 42,
+        "ttl": 10,
+        "validity_interval_start": null,
+        "certificates": [],
+        "withdrawals": [],
+        "auxiliary_data": null,
+        "inputs": [
+          {
+            "path": "m/44'/1815'/0'/0/1",
+            "prev_hash": "1af8fa0b754ff99253d983894e63a2b09cbb56c833ba18c3384210163f63dcfc",
+            "prev_index": 0
+          }
+        ],
+        "outputs": [
+          {
+            "address": "Ae2tdPwUPEZCanmBz5g2GEwFqKTKpNJcGYPKfDxoNeKZ8bRHr8366kseiK2",
+            "amount": "3003112"
+          }
+        ],
+        "mint": [],
+        "script_data_hash": null,
+        "collateral_inputs": [],
+        "required_signers": [],
+        "collateral_return": null,
+        "total_collateral": null,
+        "reference_inputs": [],
+        "signing_mode": "ORDINARY_TRANSACTION",
+        "additional_witness_requests": [],
+        "include_network_id": false,
+        "tag_cbor_sets": false,
+        "payment_req": true
+      },
+      "result": {
+        "tx_hash": "73e09bdebf98a9e0f17f86a2d11e0f14f4f8dae77cdf26ff1678e821f20c8db6",
+        "witnesses": [
+          {
+            "type": 0,
+            "pub_key": "89053545a6c254b0d9b1464e48d2b5fcf91d4e25c128afb1fcfc61d0843338ea",
+            "signature": "da07ac5246e3f20ebd1276476a4ae34a019dd4b264ffc22eea3c28cb0f1a6bb1c7764adeecf56bcb0bc6196fd1dbe080f3a7ef5b49f56980fe5b2881a4fdfa00",
+            "chain_code": "26308151516f3b0e02bb1638142747863c520273ce9bd3e5cd91e1d46fe2a635"
+          }
+        ]
+      }
+    }
+  ]
+}
diff --git a/core/src/apps/cardano/layout.py b/core/src/apps/cardano/layout.py
index ab0adb6d..14a4a1a8 100644
--- a/core/src/apps/cardano/layout.py
+++ b/core/src/apps/cardano/layout.py
@@ -1,6 +1,6 @@
 from typing import TYPE_CHECKING
 
-from trezor import TR
+from trezor import TR, wire
 from trezor.enums import (
     ButtonRequestType,
     CardanoAddressType,
@@ -28,8 +28,11 @@ if TYPE_CHECKING:
 
     from trezor import messages
     from trezor.enums import CardanoNativeScriptHashDisplayFormat
+    from trezor.messages import PaymentRequest
     from trezor.ui.layouts import PropertyType
 
+    from apps.common.paths import Bip32Path
+
     from .helpers.credential import Credential
     from .seed import Keychain
 
@@ -1117,3 +1120,59 @@ async def show_cardano_address(
         network=network_name,
         chunkify=chunkify,
     )
+
+
+async def require_confirm_payment_request(
+    provider_address: str,
+    verified_payment_request: PaymentRequest,
+    address_n: Bip32Path | None,
+    network_id: int,
+) -> None:
+    from trezor.ui.layouts import confirm_payment_request
+
+    assert verified_payment_request.amount is not None  # required for non-CoinJoin
+    total_amount = format_coin_amount(verified_payment_request.amount, network_id)
+
+    texts: list[tuple[str | None, str]] = []
+    refunds: list[tuple[str, str | None, str | None]] = []
+    trades: list[tuple[str, str, str, str | None, str | None]] = []
+    for memo in verified_payment_request.memos:
+        if memo.text_memo is not None:
+            texts.append((None, memo.text_memo.text))
+        elif memo.text_details_memo is not None:
+            texts.append((memo.text_details_memo.title, memo.text_details_memo.text))
+        elif memo.refund_memo:
+            refund_account_path = address_n_to_str(memo.refund_memo.address_n)
+            refunds.append((memo.refund_memo.address, None, refund_account_path))
+        elif memo.coin_purchase_memo:
+            coin_purchase_account_path = address_n_to_str(
+                memo.coin_purchase_memo.address_n
+            )
+            trades.append(
+                (
+                    f"-\u00A0{total_amount}",
+                    f"+\u00A0{memo.coin_purchase_memo.amount}",
+                    memo.coin_purchase_memo.address,
+                    None,
+                    coin_purchase_account_path,
+                )
+            )
+        else:
+            raise wire.DataError("Unrecognized memo type in payment request memo.")
+
+    account_path = address_n_to_str(address_n) if address_n else None
+    account_items = []
+    if account_path:
+        account_items.append((TR.address_details__derivation_path, account_path))
+
+    await confirm_payment_request(
+        verified_payment_request.recipient_name,
+        provider_address,
+        texts,
+        refunds,
+        trades,
+        account_items,
+        None,
+        None,
+        None,
+    )
diff --git a/core/src/apps/cardano/sign_tx/__init__.py b/core/src/apps/cardano/sign_tx/__init__.py
index 26b53b6a..26fc641a 100644
--- a/core/src/apps/cardano/sign_tx/__init__.py
+++ b/core/src/apps/cardano/sign_tx/__init__.py
@@ -43,7 +43,7 @@ async def sign_tx(
     else:
         raise RuntimeError  # should be unreachable
 
-    signer = signer_type(msg, keychain)
+    signer = signer_type(msg, keychain, slip21_keychain)
 
     try:
         await signer.sign()
diff --git a/core/src/apps/cardano/sign_tx/ordinary_signer.py b/core/src/apps/cardano/sign_tx/ordinary_signer.py
index 5abe51a7..0871c1ff 100644
--- a/core/src/apps/cardano/sign_tx/ordinary_signer.py
+++ b/core/src/apps/cardano/sign_tx/ordinary_signer.py
@@ -10,6 +10,8 @@ from .signer import Signer, SuiteTxType
 if TYPE_CHECKING:
     from trezor import messages
 
+    from apps.common.keychain import Keychain as Slip21Keychain
+
 
 class OrdinarySigner(Signer):
     """
@@ -23,8 +25,9 @@ class OrdinarySigner(Signer):
         self,
         msg: messages.CardanoSignTxInit,
         keychain: seed.Keychain,
+        slip21_keychain: Slip21Keychain,
     ) -> None:
-        super().__init__(msg, keychain)
+        super().__init__(msg, keychain, slip21_keychain)
         self.suite_tx_type: SuiteTxType = self._suite_tx_type()
 
     def _validate_tx_init(self) -> None:
diff --git a/core/src/apps/cardano/sign_tx/signer.py b/core/src/apps/cardano/sign_tx/signer.py
index b4c9c639..1c1a62bc 100644
--- a/core/src/apps/cardano/sign_tx/signer.py
+++ b/core/src/apps/cardano/sign_tx/signer.py
@@ -21,7 +21,7 @@ from ..helpers.hash_builder_collection import (
     HashBuilderList,
     HashBuilderSet,
 )
-from ..helpers.paths import SCHEMA_STAKING
+from ..helpers.paths import SCHEMA_STAKING, SLIP44_ID
 from ..helpers.utils import derive_public_key
 
 if TYPE_CHECKING:
@@ -31,6 +31,7 @@ if TYPE_CHECKING:
     from trezor.enums import CardanoAddressType
 
     from apps.common import cbor
+    from apps.common.keychain import Keychain as Slip21Keychain
     from apps.common.paths import PathSchema
 
     from ..helpers.hash_builder_collection import HashBuilderEmbeddedCBOR
@@ -104,11 +105,13 @@ class Signer:
         self,
         msg: messages.CardanoSignTxInit,
         keychain: seed.Keychain,
+        slip21_keychain: Slip21Keychain,
     ) -> None:
         from ..helpers.account_path_check import AccountPathChecker
 
         self.msg = msg
         self.keychain = keychain
+        self.slip21_keychain = slip21_keychain
         self.total_out = 0  # sum of output amounts
         self.change_out = 0  # sum of change amounts
 
@@ -250,6 +253,9 @@ class Signer:
 
         msg = self.msg  # local_cache_attribute
 
+        if msg.payment_req and msg.outputs_count > 1:
+            raise ProcessError("Multiple outputs not supported for payment requests")
+
         if msg.fee > LOVELACE_MAX_SUPPLY:
             raise ProcessError("Fee is out of range!")
         if (
@@ -334,6 +340,8 @@ class Signer:
             raise RuntimeError  # should be unreachable
 
     def _validate_output(self, output: CardanoTxOutput) -> None:
+        from apps.common.payment_request import PaymentRequestVerifier
+
         from ..helpers import OUTPUT_DATUM_HASH_SIZE
 
         address_parameters = output.address_parameters  # local_cache_attribute
@@ -370,11 +378,36 @@ class Signer:
             if output.format != CardanoTxOutputSerializationFormat.MAP_BABBAGE:
                 raise ProcessError("Invalid output")
 
+        if self.msg.payment_req:
+            self.payment_req_verifier = PaymentRequestVerifier(
+                self.msg.payment_req, SLIP44_ID, self.slip21_keychain
+            )
+            assert output.address is not None
+            self.payment_req_verifier.add_output(
+                output.amount, output.address, change=self._is_change_output(output)
+            )
+            self.payment_req_verifier.verify()
+        else:
+            self.payment_req_verifier = None
+
         self.account_path_checker.add_output(output)
 
     async def _show_output_init(
         self, output: CardanoTxOutput, output_index: int
     ) -> None:
+        if self.payment_req_verifier:
+            assert self.msg.payment_req
+            assert output.address
+            address_n = (
+                output.address_parameters.address_n
+                if output.address_parameters
+                else None
+            )
+            await layout.require_confirm_payment_request(
+                output.address, self.msg.payment_req, address_n, self.msg.network_id
+            )
+            return
+
         address_type = self._get_output_address_type(output)
         if (
             output.datum_hash is None
diff --git a/core/src/trezor/messages.py b/core/src/trezor/messages.py
index d505c15e..a9198c93 100644
--- a/core/src/trezor/messages.py
+++ b/core/src/trezor/messages.py
@@ -1284,6 +1284,7 @@ if TYPE_CHECKING:
         reference_inputs_count: "int"
         chunkify: "bool | None"
         tag_cbor_sets: "bool"
+        payment_req: "PaymentRequest | None"
 
         def __init__(
             self,
@@ -1311,6 +1312,7 @@ if TYPE_CHECKING:
             reference_inputs_count: "int | None" = None,
             chunkify: "bool | None" = None,
             tag_cbor_sets: "bool | None" = None,
+            payment_req: "PaymentRequest | None" = None,
         ) -> None:
             pass
 
diff --git a/python/src/trezorlib/cardano.py b/python/src/trezorlib/cardano.py
index f753bc8c..a46c04c9 100644
--- a/python/src/trezorlib/cardano.py
+++ b/python/src/trezorlib/cardano.py
@@ -900,6 +900,7 @@ def sign_tx(
     include_network_id: bool = False,
     chunkify: bool = False,
     tag_cbor_sets: bool = False,
+    payment_req: Optional[m.PaymentRequest] = None,
 ) -> Dict[str, Any]:
     witness_requests = _get_witness_requests(
         inputs,
@@ -936,6 +937,7 @@ def sign_tx(
             include_network_id=include_network_id,
             chunkify=chunkify,
             tag_cbor_sets=tag_cbor_sets,
+            payment_req=payment_req,
         ),
         expect=m.CardanoTxItemAck,
     )
diff --git a/python/src/trezorlib/messages.py b/python/src/trezorlib/messages.py
index 410aff68..17eaea5d 100644
--- a/python/src/trezorlib/messages.py
+++ b/python/src/trezorlib/messages.py
@@ -2328,6 +2328,7 @@ class CardanoSignTxInit(protobuf.MessageType):
         21: protobuf.Field("reference_inputs_count", "uint32", repeated=False, required=False, default=0),
         22: protobuf.Field("chunkify", "bool", repeated=False, required=False, default=None),
         23: protobuf.Field("tag_cbor_sets", "bool", repeated=False, required=False, default=False),
+        24: protobuf.Field("payment_req", "PaymentRequest", repeated=False, required=False, default=None),
     }
 
     def __init__(
@@ -2356,6 +2357,7 @@ class CardanoSignTxInit(protobuf.MessageType):
         reference_inputs_count: Optional["int"] = 0,
         chunkify: Optional["bool"] = None,
         tag_cbor_sets: Optional["bool"] = False,
+        payment_req: Optional["PaymentRequest"] = None,
     ) -> None:
         self.signing_mode = signing_mode
         self.protocol_magic = protocol_magic
@@ -2380,6 +2382,7 @@ class CardanoSignTxInit(protobuf.MessageType):
         self.reference_inputs_count = reference_inputs_count
         self.chunkify = chunkify
         self.tag_cbor_sets = tag_cbor_sets
+        self.payment_req = payment_req
 
 
 class CardanoTxInput(protobuf.MessageType):
diff --git a/rust/trezor-client/src/protos/generated/messages_cardano.rs b/rust/trezor-client/src/protos/generated/messages_cardano.rs
index 2903c4a2..a7b34c1a 100644
--- a/rust/trezor-client/src/protos/generated/messages_cardano.rs
+++ b/rust/trezor-client/src/protos/generated/messages_cardano.rs
@@ -2344,6 +2344,8 @@ pub struct CardanoSignTxInit {
     pub chunkify: ::std::option::Option<bool>,
     // @@protoc_insertion_point(field:hw.trezor.messages.cardano.CardanoSignTxInit.tag_cbor_sets)
     pub tag_cbor_sets: ::std::option::Option<bool>,
+    // @@protoc_insertion_point(field:hw.trezor.messages.cardano.CardanoSignTxInit.payment_req)
+    pub payment_req: ::protobuf::MessageField<super::messages_common::PaymentRequest>,
     // special fields
     // @@protoc_insertion_point(special_field:hw.trezor.messages.cardano.CardanoSignTxInit.special_fields)
     pub special_fields: ::protobuf::SpecialFields,
@@ -2821,7 +2823,7 @@ impl CardanoSignTxInit {
     }
 
     fn generated_message_descriptor_data() -> ::protobuf::reflect::GeneratedMessageDescriptorData {
-        let mut fields = ::std::vec::Vec::with_capacity(23);
+        let mut fields = ::std::vec::Vec::with_capacity(24);
         let mut oneofs = ::std::vec::Vec::with_capacity(0);
         fields.push(::protobuf::reflect::rt::v2::make_option_accessor::<_, _>(
             "signing_mode",
@@ -2938,6 +2940,11 @@ impl CardanoSignTxInit {
             |m: &CardanoSignTxInit| { &m.tag_cbor_sets },
             |m: &mut CardanoSignTxInit| { &mut m.tag_cbor_sets },
         ));
+        fields.push(::protobuf::reflect::rt::v2::make_message_field_accessor::<_, super::messages_common::PaymentRequest>(
+            "payment_req",
+            |m: &CardanoSignTxInit| { &m.payment_req },
+            |m: &mut CardanoSignTxInit| { &mut m.payment_req },
+        ));
         ::protobuf::reflect::GeneratedMessageDescriptorData::new_2::<CardanoSignTxInit>(
             "CardanoSignTxInit",
             fields,
@@ -2992,6 +2999,11 @@ impl ::protobuf::Message for CardanoSignTxInit {
         if self.required_signers_count.is_none() {
             return false;
         }
+        for v in &self.payment_req {
+            if !v.is_initialized() {
+                return false;
+            }
+        };
         true
     }
 
@@ -3067,6 +3079,9 @@ impl ::protobuf::Message for CardanoSignTxInit {
                 184 => {
                     self.tag_cbor_sets = ::std::option::Option::Some(is.read_bool()?);
                 },
+                194 => {
+                    ::protobuf::rt::read_singular_message_into_field(is, &mut self.payment_req)?;
+                },
                 tag => {
                     ::protobuf::rt::read_unknown_or_skip_group(tag, is, self.special_fields.mut_unknown_fields())?;
                 },
@@ -3148,6 +3163,10 @@ impl ::protobuf::Message for CardanoSignTxInit {
         if let Some(v) = self.tag_cbor_sets {
             my_size += 2 + 1;
         }
+        if let Some(v) = self.payment_req.as_ref() {
+            let len = v.compute_size();
+            my_size += 2 + ::protobuf::rt::compute_raw_varint64_size(len) + len;
+        }
         my_size += ::protobuf::rt::unknown_fields_size(self.special_fields.unknown_fields());
         self.special_fields.cached_size().set(my_size as u32);
         my_size
@@ -3223,6 +3242,9 @@ impl ::protobuf::Message for CardanoSignTxInit {
         if let Some(v) = self.tag_cbor_sets {
             os.write_bool(23, v)?;
         }
+        if let Some(v) = self.payment_req.as_ref() {
+            ::protobuf::rt::write_message_field_with_cached_size(24, v, os)?;
+        }
         os.write_unknown_fields(self.special_fields.unknown_fields())?;
         ::std::result::Result::Ok(())
     }
@@ -3263,6 +3285,7 @@ impl ::protobuf::Message for CardanoSignTxInit {
         self.reference_inputs_count = ::std::option::Option::None;
         self.chunkify = ::std::option::Option::None;
         self.tag_cbor_sets = ::std::option::Option::None;
+        self.payment_req.clear();
         self.special_fields.clear();
     }
 
@@ -3291,6 +3314,7 @@ impl ::protobuf::Message for CardanoSignTxInit {
             reference_inputs_count: ::std::option::Option::None,
             chunkify: ::std::option::Option::None,
             tag_cbor_sets: ::std::option::Option::None,
+            payment_req: ::protobuf::MessageField::none(),
             special_fields: ::protobuf::SpecialFields::new(),
         };
         &instance
@@ -10490,108 +10514,110 @@ impl CardanoTxWitnessType {
 
 static file_descriptor_proto_data: &'static [u8] = b"\
     \n\x16messages-cardano.proto\x12\x1ahw.trezor.messages.cardano\x1a\x15me\
-    ssages-common.proto\"\x87\x01\n\x1cCardanoBlockchainPointerType\x12\x1f\
-    \n\x0bblock_index\x18\x01\x20\x02(\rR\nblockIndex\x12\x19\n\x08tx_index\
-    \x18\x02\x20\x02(\rR\x07txIndex\x12+\n\x11certificate_index\x18\x03\x20\
-    \x02(\rR\x10certificateIndex\"\xef\x02\n\x13CardanoNativeScript\x12G\n\
-    \x04type\x18\x01\x20\x02(\x0e23.hw.trezor.messages.cardano.CardanoNative\
-    ScriptTypeR\x04type\x12I\n\x07scripts\x18\x02\x20\x03(\x0b2/.hw.trezor.m\
-    essages.cardano.CardanoNativeScriptR\x07scripts\x12\x19\n\x08key_hash\
-    \x18\x03\x20\x01(\x0cR\x07keyHash\x12\x19\n\x08key_path\x18\x04\x20\x03(\
-    \rR\x07keyPath\x12:\n\x19required_signatures_count\x18\x05\x20\x01(\rR\
-    \x17requiredSignaturesCount\x12%\n\x0einvalid_before\x18\x06\x20\x01(\
-    \x04R\rinvalidBefore\x12+\n\x11invalid_hereafter\x18\x07\x20\x01(\x04R\
-    \x10invalidHereafter\"\xaa\x02\n\x1aCardanoGetNativeScriptHash\x12G\n\
-    \x06script\x18\x01\x20\x02(\x0b2/.hw.trezor.messages.cardano.CardanoNati\
-    veScriptR\x06script\x12g\n\x0edisplay_format\x18\x02\x20\x02(\x0e2@.hw.t\
-    rezor.messages.cardano.CardanoNativeScriptHashDisplayFormatR\rdisplayFor\
-    mat\x12Z\n\x0fderivation_type\x18\x03\x20\x02(\x0e21.hw.trezor.messages.\
-    cardano.CardanoDerivationTypeR\x0ederivationType\":\n\x17CardanoNativeSc\
-    riptHash\x12\x1f\n\x0bscript_hash\x18\x01\x20\x02(\x0cR\nscriptHash\"\
-    \xaf\x03\n\x1cCardanoAddressParametersType\x12Q\n\x0caddress_type\x18\
-    \x01\x20\x02(\x0e2..hw.trezor.messages.cardano.CardanoAddressTypeR\x0bad\
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+    \x12!\n\x0crelays_count\x18\x0c\x20\x02(\rR\x0brelaysCount\"\x8a\x01\n\
     \x0bCardanoDRep\x12?\n\x04type\x18\x01\x20\x02(\x0e2+.hw.trezor.messages\
     .cardano.CardanoDRepTypeR\x04type\x12\x19\n\x08key_hash\x18\x02\x20\x01(\
     \x0cR\x07keyHash\x12\x1f\n\x0bscript_hash\x18\x03\x20\x01(\x0cR\nscriptH\
@@ -10688,8 +10714,9 @@ pub fn file_descriptor() -> &'static ::protobuf::reflect::FileDescriptor {
     static file_descriptor: ::protobuf::rt::Lazy<::protobuf::reflect::FileDescriptor> = ::protobuf::rt::Lazy::new();
     file_descriptor.get(|| {
         let generated_file_descriptor = generated_file_descriptor_lazy.get(|| {
-            let mut deps = ::std::vec::Vec::with_capacity(1);
+            let mut deps = ::std::vec::Vec::with_capacity(2);
             deps.push(super::messages_common::file_descriptor().clone());
+            deps.push(super::options::file_descriptor().clone());
             let mut messages = ::std::vec::Vec::with_capacity(37);
             messages.push(CardanoBlockchainPointerType::generated_message_descriptor_data());
             messages.push(CardanoNativeScript::generated_message_descriptor_data());
diff --git a/tests/device_tests/cardano/test_sign_tx.py b/tests/device_tests/cardano/test_sign_tx.py
index e2014269..5d2b963f 100644
--- a/tests/device_tests/cardano/test_sign_tx.py
+++ b/tests/device_tests/cardano/test_sign_tx.py
@@ -16,14 +16,21 @@
 
 import pytest
 
-from trezorlib import cardano, device, messages
+from trezorlib import btc, cardano, device, messages, misc
 from trezorlib.debuglink import LayoutType
 from trezorlib.debuglink import SessionDebugWrapper as Session
 from trezorlib.debuglink import TrezorClientDebugLink as Client
 from trezorlib.exceptions import TrezorFailure
+from trezorlib.tools import parse_path
 
 from ...common import parametrize_using_common_fixtures
 from ...input_flows import InputFlowConfirmAllWarnings
+from ..payment_req import (
+    CoinPurchaseMemo,
+    RefundMemo,
+    TextDetailsMemo,
+    make_payment_request,
+)
 
 pytestmark = [pytest.mark.altcoin, pytest.mark.cardano, pytest.mark.models("core")]
 
@@ -118,6 +125,41 @@ def call_sign_tx(session: Session, parameters, input_flow=None, chunkify: bool =
     else:
         device.apply_settings(session, safety_checks=messages.SafetyCheckLevel.Strict)
 
+    if parameters.get("payment_req"):
+        # Note: "payment_req" in the JSON is just a boolean,
+        # which makes us generate a payment request here.
+        # It could be changed to encode the payment request in the JSON,
+        # but it feels overkill for now.
+        purchase_memo = CoinPurchaseMemo(
+            amount="0.00001 BTC",
+            coin_name="Bitcoin",
+            slip44=0,
+            address_n=parse_path("m/44h/0h/0h/0/0"),
+        )
+        purchase_memo.address_resp = btc.get_authenticated_address(
+            session, purchase_memo.coin_name, purchase_memo.address_n
+        )
+        refund_memo = RefundMemo(address_n=parse_path("m/44h/1815h/0h/0/2"))
+        refund_memo.address_resp = cardano.get_authenticated_address(
+            session, cardano.create_address_parameters(8, refund_memo.address_n)
+        )
+        text_details_memo = TextDetailsMemo(
+            title="Are you sure...",
+            text="... you want to swap your valuable ADA for some sats?",
+        )
+        memos = [purchase_memo, refund_memo, text_details_memo]
+        nonce = misc.get_nonce(session)
+        payment_request = make_payment_request(
+            session,
+            recipient_name="trezor.io",
+            slip44=1815,
+            outputs=[(o[0].amount, o[0].address) for o in outputs],
+            memos=memos,
+            nonce=nonce,
+        )
+    else:
+        payment_request = None
+
     with session.client as client:
         if input_flow is not None:
             session.client.watch_layout()
@@ -147,6 +189,7 @@ def call_sign_tx(session: Session, parameters, input_flow=None, chunkify: bool =
             include_network_id=parameters["include_network_id"],
             chunkify=chunkify,
             tag_cbor_sets=parameters["tag_cbor_sets"],
+            payment_req=payment_request,
         )
 
 
@@ -182,3 +225,32 @@ def _transform_expected_result(result):
                 "cvote_registration_signature"
             ] = bytes.fromhex(cvote_registration_signature)
     return transformed_result
+
+
+@pytest.mark.models(
+    "core",
+    skip="t2t1",
+    reason="T1 does not support payment requests. Payment requests not yet implemented on model T.",
+)
+@pytest.mark.altcoin
+@pytest.mark.experimental
+@parametrize_using_common_fixtures(
+    "cardano/sign_tx.slip24.json",
+)
+def test_signtx_payment_req(session: Session, parameters, result):
+    call_sign_tx(session, parameters, None)
+
+
+@pytest.mark.models(
+    "core",
+    skip="t2t1",
+    reason="T1 does not support payment requests. Payment requests not yet implemented on model T.",
+)
+@pytest.mark.altcoin
+@pytest.mark.experimental
+@parametrize_using_common_fixtures(
+    "cardano/sign_tx.slip24.failed.json",
+)
+def test_sign_tx_payment_req_failed(session: Session, parameters, result):
+    with pytest.raises(TrezorFailure, match=result["error_message"]):
+        call_sign_tx(session, parameters, None)
diff --git a/tests/ui_tests/fixtures.json b/tests/ui_tests/fixtures.json
index f1bb31a4..551be03e 100644
--- a/tests/ui_tests/fixtures.json
+++ b/tests/ui_tests/fixtures.json
@@ -11182,6 +11182,8 @@
 "T3B1_cs_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "f1fbaecdf25816c8ffe0434775c304b179aa47556b727aefa47033053b7e2fd1",
 "T3B1_cs_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "b33aa52eb5700694d0fffce7dd941a97959a5be15e1f7f423fcc4ec31374c36a",
 "T3B1_cs_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "d9afe3c426101441c083498534f2c5c3f7fd0914007cbddfadad6b14877da507",
+"T3B1_cs_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "d84b6b16576c5bc1d2839feda59ef20ff8a8334159d1084406cd5dcd1025e233",
+"T3B1_cs_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "dfda1a2ce22ae80d421257866bf22cbf90c87afbe302cdf331ce91ea803ad3d0",
 "T3B1_cs_ethereum-test_definitions.py::test_builtin": "c689aa27d67575b5cc51a11ad72fcf9c10c1405fe87e04833f0c4be871e1aa3e",
 "T3B1_cs_ethereum-test_definitions.py::test_builtin_token": "469a537d09294a80c2161bc7ecb35ccbb34b370d2363c4c24ca531022bbd08ac",
 "T3B1_cs_ethereum-test_definitions.py::test_chain_id_allowed": "6240fbcc28e1d595aef9e9b9017e9965c6f2e16cae8d6e54056912088802ffd6",
@@ -12616,6 +12618,8 @@
 "T3B1_de_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "9185ead588d5b83e14b537d77498590af6766c4f7787de9343990c7b192948a3",
 "T3B1_de_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "272087330102730a9df554309f4f8e0de1b645f4733e6e3e9f3e94fb325a107a",
 "T3B1_de_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "87df29e41220db07a23d392c21b35ea3e375b10813d6a7588e090f29462a6050",
+"T3B1_de_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "fd01c071d3013e00623e3cb6839ef6621b97d1318156e5493cecdbace2d6aa75",
+"T3B1_de_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "4c20003675f14ccc832d87d26f01e232dc2437b66b44b63cadbf7cb09e91ce43",
 "T3B1_de_ethereum-test_definitions.py::test_builtin": "371e26c3501e02aee068ba12851e5f8f463c515a7ce1d9163df3947e0c60bb69",
 "T3B1_de_ethereum-test_definitions.py::test_builtin_token": "1593134659c08d797105bbc9354b250dad12210259e7f428532ff8344758af71",
 "T3B1_de_ethereum-test_definitions.py::test_chain_id_allowed": "3bdf35ae8ee4662404a0b4e901a927b77fdd0b24c79681f8f01d65260cfd3b01",
@@ -14050,6 +14054,8 @@
 "T3B1_en_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "ca6f469b561148a93068795d467e8b1f8db00340e28ea33a7e6476c3948f4e46",
 "T3B1_en_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "950823439ea9fe2cc6701b41d8785e0d4a7ddc5066db69c0ae139c85fd4c1696",
 "T3B1_en_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "1545505011f2a71a99f48b249e35745a923c1390d1020fb3f398884f157099f0",
+"T3B1_en_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "79c2cdcf10b1d4dbb2450a5c7ead0456f94e0e58fc11d43f70b8c2ab42276a4f",
+"T3B1_en_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "32b71941f356697db51b561b3ef83fc7e83df153ed5a6a0e58b495c8f34ecfbb",
 "T3B1_en_ethereum-test_definitions.py::test_builtin": "a5e700e37e287c122a4de705253f0b9940aa8b28667f54dbaeeb03d32cfcfb1d",
 "T3B1_en_ethereum-test_definitions.py::test_builtin_token": "90490e9896a6d45284d67ac5a9d15e1852456268ff2cca71b659d98f74675643",
 "T3B1_en_ethereum-test_definitions.py::test_chain_id_allowed": "dbfdf0d28caf300fb39952083a675cfaafcaa0e0595abf28b49ba7c41cdcaa8b",
@@ -15484,6 +15490,8 @@
 "T3B1_es_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "3a1b5a0ef27a1562c76dcb0f8d4e6c4c1153c6baaf6c6d0f9ce9204155d9cf23",
 "T3B1_es_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "b0939e77ed39950ba7e6e1116d7d71d0a11b3bca553dbaca07dbd56240569bea",
 "T3B1_es_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "7ceae810ffc43fd8d0ff8906a9ae615e6b454e7f1982aca8bbb41e0a791af356",
+"T3B1_es_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "7eb0082b5a4dc8391d6ddeec7ebe503631766a97c8b4547645bbd6f3d453fdcf",
+"T3B1_es_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "dda319565c27c10aa5df11e1b669fbe5de0b82f273cad8ecb8e3ea4e85502d6e",
 "T3B1_es_ethereum-test_definitions.py::test_builtin": "56c5d02bbabbd887f0c1f2082dfc1c20396cebd3537dbc148db0b0df3b6e6d08",
 "T3B1_es_ethereum-test_definitions.py::test_builtin_token": "d0be986ba8337aea85d36422f15a12d25a5aa1422b9cbba35880ff9b54f0ec18",
 "T3B1_es_ethereum-test_definitions.py::test_chain_id_allowed": "037e831343abef4e865c00e219ceb43e02796f81c03f91aab415af59b2a75ad7",
@@ -16918,6 +16926,8 @@
 "T3B1_fr_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "5351b11c4a092df82be344032bfa371a97fa50e6242dabca418481f184825b43",
 "T3B1_fr_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "e27da23bb1ecf4a45773c882dd142f9b58eb012da8b38ac91d8421bfc7177921",
 "T3B1_fr_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "cd96ba36e79007642c6c905adc8cf066fd7251eaec45c888f3770ed902b4221a",
+"T3B1_fr_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "18a879960549990b042d655c252f5aea74479ddb2f8ad68cf25debaaebc0c8f9",
+"T3B1_fr_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "37ee820a9182b2196e603a7741be5ade5d416ae1e7cf2b03e23ff9df5ca43af8",
 "T3B1_fr_ethereum-test_definitions.py::test_builtin": "ca0b0bfaed17774379362edc3ce020986352c8afc49746dd3a8b71a8b632b04b",
 "T3B1_fr_ethereum-test_definitions.py::test_builtin_token": "544133bbab9adbd8e52fd1087e31bcd092bba834ed3e5ea6ce041c81f1891a32",
 "T3B1_fr_ethereum-test_definitions.py::test_chain_id_allowed": "8bbea08853cee5e36b32662c0564f0eefc9c3789ca31e6115a9acdbfa218157b",
@@ -18352,6 +18362,8 @@
 "T3B1_pt_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "5b0372d6b55c0a1b0ab4424d78b090f5659e072d3ab4461b79b63d32c5a30bc1",
 "T3B1_pt_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "a727883900b59929527810596ba6625ffb8b13a57918a611de4cf2b2abb7bf2f",
 "T3B1_pt_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "752643099faa1de5d5a841b9709af8a94f08f4ce1068e2b196c34e8d8df1a7a3",
+"T3B1_pt_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "764ea51e5f04f0d3614627e9b141df76590128e3ab361b9ac2a451dabb3756bc",
+"T3B1_pt_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "62a4e4455cd612aa7b89b7697196ad643efb0be1515149d9eada21bfa8d72a73",
 "T3B1_pt_ethereum-test_definitions.py::test_builtin": "46cf84ad58b83e4868cea81762580e9bff7a84b09608909c7ec8e5b68a317c0d",
 "T3B1_pt_ethereum-test_definitions.py::test_builtin_token": "cd17b7109461f417803eba33be6c2c56e36c659b424dd9918a9df030858208b5",
 "T3B1_pt_ethereum-test_definitions.py::test_chain_id_allowed": "f0cb9f47e39efa72083810cc9ac4a55bb016da7440fe471cb9f33e91c41c9099",
@@ -20178,6 +20190,8 @@
 "T3T1_cs_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "692b3d851ae926a6a0b99d4480a259123fb66095fe95bef6849e24f4427ed4a8",
 "T3T1_cs_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "4fa832ebe10a6d41c07520deb24071eecb063e8e7cc4492a5c1661331cb093b1",
 "T3T1_cs_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "95bfb2a14c4160fad7717029d4ea31a3b15df0b2fab78e4735ae3a5440a46f85",
+"T3T1_cs_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "a81669ef605498457a4e2bc2a46dd8d7d3f5fa701fb99c4c60e3fa7111144373",
+"T3T1_cs_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "76b8cfac14ba99d2bbf75bdec1d597383cd86812ee9214870ab416d77116bf4e",
 "T3T1_cs_ethereum-test_definitions.py::test_builtin": "7d47791c66f60605cd2ae2fd06f4966879e80ee5c4abd5be0f9b1640c15e5326",
 "T3T1_cs_ethereum-test_definitions.py::test_builtin_token": "0fcccf6a1fe14882f0ba857e60380a2b7220fb4ee6fca63857b9d7b71316afde",
 "T3T1_cs_ethereum-test_definitions.py::test_chain_id_allowed": "21b2534e73cede72eb63ef36f969e6aea27293590e2e065f38ac14ca2a936dfe",
@@ -21643,6 +21657,8 @@
 "T3T1_de_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "35d35c567b2663864123ad209e2db68293bd962c961e6b903d6cb2a154568bb1",
 "T3T1_de_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "3528b0b303c3feda3443f337b738749fb09563b72a8a6459e7aa171226d5ff6f",
 "T3T1_de_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "835560a203af4b3aacef79a8a9af4aeeddab7e808e7f514dc933a54a11f5da99",
+"T3T1_de_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "7707d99ed4fa158c84cd437dae52010a4b58899b932a7caa4e411cbbde4aaded",
+"T3T1_de_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "3c01ec5a696990cce3db074058bdf985a38aabce7db190d078eba05e992455c0",
 "T3T1_de_ethereum-test_definitions.py::test_builtin": "de55ab17598d3460e3237fdb299292e3121d18df65a07435c22553c20a81c194",
 "T3T1_de_ethereum-test_definitions.py::test_builtin_token": "b7a4d58bce1402d432e4905101e5adee75093c28503059c595591dd343b4c8d7",
 "T3T1_de_ethereum-test_definitions.py::test_chain_id_allowed": "c579487d066aa455cf8b5ff3832ec047c001d5b14913d23a766d1921b07b09d8",
@@ -23108,6 +23124,8 @@
 "T3T1_en_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "53ca292b240892a3763a8188434a27cdcb8620a04f6f95f06794ac09a8c668fb",
 "T3T1_en_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "95b48b0813c6e2438c550a87946cf6d6d07b7ec6f716af62c23db5b80c168f9f",
 "T3T1_en_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_stake_deregistr-6e84da2f": "df86a797b48b8a6f56171e318e2379d56856ade66c313a9b74eae54f4b7e066f",
+"T3T1_en_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "299c35cdae0601fa6e38eef26961269b8235c1522e3354f17d711b85d4fb8fe8",
+"T3T1_en_cardano-test_sign_tx.py::test_signtx_payment_req[swap]": "f8247770c82f1202eff4b3f3ea24914efe68fc86ed5c813568f5f56e56ff8937",
 "T3T1_en_ethereum-test_definitions.py::test_builtin": "ed123aaf6484810e023b86b368f24658492c93392e9ee6c37605fe548da235a8",
 "T3T1_en_ethereum-test_definitions.py::test_builtin_token": "f7ab241252e3a5ed4cce2ced95d552b4ef7486f3f9e699cad8352879a6770e00",
 "T3T1_en_ethereum-test_definitions.py::test_chain_id_allowed": "1095ce966156d660d82a71c2fdcdd5e7fd88ff9b7b06a3b9395296b55491be70",
@@ -24573,6 +24591,8 @@
 "T3T1_es_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[plutus_transaction_with_total_co-e846c221": "b1e725951eb4aa3dcbc1e5be60d7707e1c8d4ab1a776621e8041a2e5f19d46da",
 "T3T1_es_cardano-test_sign_tx.py::test_cardano_sign_tx_show_details[transaction_with_cip36_registrat-b9111c27": "0528a841a56b97d9ff8414e8977840f77a627191e1d094f6469b56dc9e052027",
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+"T3T1_es_cardano-test_sign_tx.py::test_sign_tx_payment_req_failed[swap_-_multiple_outputs]": "0d3703cd3aecc456b536f7d4a583cff76bdcbf34e6f6af10a54f7e8d0b678413",
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