diff --git a/docs/packages/connect/methods/cardanoSignMessage.md b/docs/packages/connect/methods/cardanoSignMessage.md
index fbc79226ac1..c89307dbeda 100644
--- a/docs/packages/connect/methods/cardanoSignMessage.md
+++ b/docs/packages/connect/methods/cardanoSignMessage.md
@@ -15,7 +15,7 @@ const result = await TrezorConnect.cardanoSignMessage(params);
 -   `signingPath` - _required_ `string | Array<number>` minimum length is `5`. [read more](../path.md)
 -   `payload` - _required_ `string` message bytes in hex.
 -   `hashPayload` - _required_ `boolean` if true, device will hash the payload before signing. Must be enabled if payload exceeds 1024 bytes.
--   `displayAscii` - _required_ `boolean` if true, device will decode payload as ASCII.
+-   `preferHexDisplay` - _optional_ `boolean` if true, device will always decode payload as hex bytes.
 -   `networkId` - _optional_ `number` network identifier. Required if `addressParameters` are set.
 -   `protocolMagic` - _optional_ `number` protocol magic. Required if `addressParameters` are set.
 -   `addressParameters` - _optional_ `CardanoAddressParameters` object. [read more](./cardanoGetAddress.md#address-parameters) Used to derive address for message header. If not set then the key hash given by `signingPath` will be used instead.
@@ -25,7 +25,7 @@ const result = await TrezorConnect.cardanoSignMessage(params);
 
 If `hashPayload` is `true`, the device will display just the first 56 bytes of the payload. Otherwise 1024 bytes are displayed.
 
-The payload is decoded as a hex string if `displayAscii` is set to `false`. Otherwise it is decoded as an ASCII string, which succeeds only given the following conditions are met:
+By default, the payload is decoded as ASCII given the conditions below are satisfied. If they are not satisfied or `preferHexDisplay` is `true`, the payload is displayed as hex bytes. The ASCII conditions are:
 
 -   The payload is a valid ASCII string.
 -   It must be clear to the user what the contents of the payload are, specifically there is:
@@ -42,7 +42,7 @@ TrezorConnect.cardanoSignMessage({
     signingPath: "m/1852'/1815'/0'/0/0",
     payload: '48656c6c6f205472657a6f7221', // "Hello Trezor!" in hex
     hashPayload: true,
-    displayAscii: true,
+    preferHexDisplay: false,
 });
 ```
 
@@ -53,7 +53,7 @@ TrezorConnect.cardanoSignMessage({
     signingPath: "m/1852'/1815'/0'/0/0",
     payload: '48656c6c6f205472657a6f7221', // "Hello Trezor!" in hex
     hashPayload: true,
-    displayAscii: true,
+    preferHexDisplay: false,
     networkId: 1,
     protocolMagic: 764824073,
     addressParameters: {
@@ -74,6 +74,7 @@ TrezorConnect.cardanoSignMessage({
     payload: {
       signature: string,
       payload: string,
+      pubKey: string,
       headers: {
         protected: {
           1: -8, // EdDSA algorithm
diff --git a/packages/connect-explorer/src/data/methods/cardano/signMessage.ts b/packages/connect-explorer/src/data/methods/cardano/signMessage.ts
index 0d46759bdd7..e9ab1c4e9be 100644
--- a/packages/connect-explorer/src/data/methods/cardano/signMessage.ts
+++ b/packages/connect-explorer/src/data/methods/cardano/signMessage.ts
@@ -24,8 +24,8 @@ const batch = [
         value: true,
     },
     {
-        name: 'displayAscii',
-        label: 'Display payload as ASCII on Trezor',
+        name: 'preferHexDisplay',
+        label: 'Display payload as hex bytes on Trezor even if it is valid ASCII',
         type: 'checkbox',
         value: false,
     },
diff --git a/packages/connect/e2e/__fixtures__/cardanoSignMessage.ts b/packages/connect/e2e/__fixtures__/cardanoSignMessage.ts
index 7c2e740cb2c..27745e26d80 100644
--- a/packages/connect/e2e/__fixtures__/cardanoSignMessage.ts
+++ b/packages/connect/e2e/__fixtures__/cardanoSignMessage.ts
@@ -40,13 +40,30 @@ export default {
                 signingPath: "m/1852'/1815'/0'/0/0",
                 payload: '54657374', // "Test" hex
                 hashPayload: false,
-                displayAscii: true,
             },
             result: {
                 payload: '54657374',
                 signature:
                     '1c2c7612840654a56d61b58df36f41a4b47ad4034140ea369269c143f2732b2702c42fa753a8c52a9b662ba02944e43ec95c59cb892bf01cdd4a7f1c9397490c',
                 headers: headerUnhashed('80f9e2c88e6c817008f3a812ed889b4a4da8e0bd103f86e7335422aa'),
+                pubKey: '5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1',
+            },
+            legacyResults: [legacyResults.beforeMessageSigning],
+        },
+        {
+            description: 'Sign short ASCII payload and display as hex',
+            params: {
+                signingPath: "m/1852'/1815'/0'/0/0",
+                payload: '54657374', // "Test" hex
+                hashPayload: false,
+                preferHexDisplay: true,
+            },
+            result: {
+                payload: '54657374',
+                signature:
+                    '1c2c7612840654a56d61b58df36f41a4b47ad4034140ea369269c143f2732b2702c42fa753a8c52a9b662ba02944e43ec95c59cb892bf01cdd4a7f1c9397490c',
+                headers: headerUnhashed('80f9e2c88e6c817008f3a812ed889b4a4da8e0bd103f86e7335422aa'),
+                pubKey: '5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1',
             },
             legacyResults: [legacyResults.beforeMessageSigning],
         },
@@ -56,7 +73,6 @@ export default {
                 signingPath: "m/1852'/1815'/0'/0/0",
                 payload: '54657374', // "Test" hex
                 hashPayload: false,
-                displayAscii: true,
                 networkId: 1,
                 protocolMagic: 764824073,
                 addressParameters: {
@@ -72,6 +88,7 @@ export default {
                 headers: headerUnhashed(
                     '0180f9e2c88e6c817008f3a812ed889b4a4da8e0bd103f86e7335422aa122a946b9ad3d2ddf029d3a828f0468aece76895f15c9efbd69b4277',
                 ),
+                pubKey: '5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1',
             },
             legacyResults: [legacyResults.beforeMessageSigning],
         },
@@ -81,13 +98,13 @@ export default {
                 signingPath: "m/1852'/1815'/0'/0/0",
                 payload: 'ff',
                 hashPayload: false,
-                displayAscii: false,
             },
             result: {
                 payload: 'ff',
                 signature:
                     '003a3631d6c7509c2ebfbeb955c7f6a6b214c4283c2cbc10fc7eda6f2237881c7b219e4b28f3004d50cf528ad325b2d4f10425003096f80db58fc160365d920d',
                 headers: headerUnhashed('80f9e2c88e6c817008f3a812ed889b4a4da8e0bd103f86e7335422aa'),
+                pubKey: '5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1',
             },
             legacyResults: [legacyResults.beforeMessageSigning],
         },
@@ -97,34 +114,38 @@ export default {
                 signingPath: "m/1852'/1815'/0'/0/0",
                 payload: HELLO_TREZOR_86,
                 hashPayload: true,
-                displayAscii: true,
             },
             result: {
                 payload: HELLO_TREZOR_86,
                 signature:
                     '39dba8107fb840b0aeff3f45eaddf9612cd4fd640a18cbe28ea2448b8ba2fea99b67cd9662a46cc7a70e1ad0d6399008d5fad9d67ddb437a623b594bf93b8e0f',
                 headers: headerHashed('80f9e2c88e6c817008f3a812ed889b4a4da8e0bd103f86e7335422aa'),
+                pubKey: '5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1',
             },
             legacyResults: [legacyResults.beforeMessageSigning],
         },
         {
-            description: 'Sign long ASCII payload without hashing',
+            description: 'Display ambigous-looking " " ASCII payload as hex',
             params: {
                 signingPath: "m/1852'/1815'/0'/0/0",
-                payload: HELLO_TREZOR_86,
+                payload: '20', // " " (single space) hex
                 hashPayload: false,
-                displayAscii: true,
             },
-            result: false,
+            result: {
+                payload: '20',
+                signature:
+                    '5f3c4a4240b48686cb3ee95ed75c9152222023b630c6a0daab3c2a028ba484e98114451aa707139d65e2e6b9af7f9d45f82bfc75c752179877aee2675a662d05',
+                headers: headerUnhashed('80f9e2c88e6c817008f3a812ed889b4a4da8e0bd103f86e7335422aa'),
+                pubKey: '5d010cf16fdeff40955633d6c565f3844a288a24967cf6b76acbeb271b4f13c1',
+            },
             legacyResults: [legacyResults.beforeMessageSigning],
         },
         {
-            description: 'Display ambigous-looking " " ASCII payload',
+            description: 'Sign long ASCII payload without hashing',
             params: {
                 signingPath: "m/1852'/1815'/0'/0/0",
-                payload: '20', // " " (single space) hex
+                payload: HELLO_TREZOR_86,
                 hashPayload: false,
-                displayAscii: true,
             },
             result: false,
             legacyResults: [legacyResults.beforeMessageSigning],
diff --git a/packages/connect/src/api/cardano/api/cardanoSignMessage.ts b/packages/connect/src/api/cardano/api/cardanoSignMessage.ts
index ab0c2096956..e14e22a7208 100644
--- a/packages/connect/src/api/cardano/api/cardanoSignMessage.ts
+++ b/packages/connect/src/api/cardano/api/cardanoSignMessage.ts
@@ -18,7 +18,7 @@ export type CardanoSignMessageParams = {
     signingPath: Path;
     payload: string;
     hashPayload: boolean;
-    displayAscii: boolean;
+    preferHexDisplay: boolean;
     networkId?: number;
     protocolMagic?: number;
     addressParameters?: PROTO.CardanoAddressParametersType;
@@ -54,7 +54,7 @@ export default class CardanoSignMessage extends AbstractMethod<
             signingPath: validatePath(payload.signingPath, 5),
             payload: payload.payload,
             hashPayload: payload.hashPayload,
-            displayAscii: payload.displayAscii,
+            preferHexDisplay: payload.preferHexDisplay ?? false,
             networkId: payload.networkId,
             protocolMagic: payload.protocolMagic,
             addressParameters:
@@ -76,7 +76,7 @@ export default class CardanoSignMessage extends AbstractMethod<
             network_id: this.params.networkId,
             protocol_magic: this.params.protocolMagic,
             address_parameters: this.params.addressParameters,
-            display_ascii: this.params.displayAscii,
+            prefer_hex_display: this.params.preferHexDisplay,
             derivation_type: this.params.derivationType,
         });
 
@@ -89,13 +89,14 @@ export default class CardanoSignMessage extends AbstractMethod<
         );
 
         const {
-            message: { signature, address },
+            message: { signature, address, pub_key },
         } = await typedCall('CardanoMessageItemHostAck', 'CardanoSignMessageFinished');
 
         return {
             signature,
             payload: this.params.payload,
             headers: this._createHeaders(address),
+            pubKey: pub_key,
         };
     }
 
diff --git a/packages/connect/src/types/api/__tests__/cardano.ts b/packages/connect/src/types/api/__tests__/cardano.ts
index 79075822bcb..f20b51fd2e6 100644
--- a/packages/connect/src/types/api/__tests__/cardano.ts
+++ b/packages/connect/src/types/api/__tests__/cardano.ts
@@ -427,7 +427,7 @@ export const cardanoSignMessage = async (api: TrezorConnect) => {
         signingPath: 'm/44',
         payload: 'Test..',
         hashPayload: true,
-        displayAscii: true,
+        preferHexDisplay: false,
         networkId: 0,
         protocolMagic: 0,
         addressParameters: {
@@ -450,6 +450,7 @@ export const cardanoSignMessage = async (api: TrezorConnect) => {
         const { payload } = sign;
         payload.payload.toLowerCase();
         payload.signature.toLowerCase();
+        payload.pubKey.toLowerCase();
         const { headers } = payload;
         headers.protected[1].toFixed();
         headers.protected.address.toLowerCase();
diff --git a/packages/connect/src/types/api/cardano/index.ts b/packages/connect/src/types/api/cardano/index.ts
index 3e265cadf7d..32decdb8556 100644
--- a/packages/connect/src/types/api/cardano/index.ts
+++ b/packages/connect/src/types/api/cardano/index.ts
@@ -294,7 +294,7 @@ export const CardanoSignMessage = Type.Object({
     signingPath: DerivationPath,
     payload: Type.String(),
     hashPayload: Type.Boolean(),
-    displayAscii: Type.Boolean(),
+    preferHexDisplay: Type.Optional(Type.Boolean()),
     networkId: Type.Optional(Type.Number()),
     protocolMagic: Type.Optional(Type.Number()),
     addressParameters: Type.Optional(CardanoAddressParameters),
@@ -324,4 +324,5 @@ export const CardanoSignedMessage = Type.Object({
     headers: CardanoMessageHeaders,
     payload: Type.String(),
     signature: Type.String(),
+    pubKey: Type.String(),
 });
diff --git a/packages/protobuf/messages.json b/packages/protobuf/messages.json
index 5c721aad58e..246715ad9a3 100644
--- a/packages/protobuf/messages.json
+++ b/packages/protobuf/messages.json
@@ -2502,7 +2502,7 @@
                     "type": "bool",
                     "id": 5
                 },
-                "display_ascii": {
+                "prefer_hex_display": {
                     "rule": "required",
                     "type": "bool",
                     "id": 6
@@ -2544,6 +2544,11 @@
                     "rule": "required",
                     "type": "bytes",
                     "id": 2
+                },
+                "pub_key": {
+                    "rule": "required",
+                    "type": "bytes",
+                    "id": 3
                 }
             }
         },
diff --git a/packages/protobuf/src/messages-schema.ts b/packages/protobuf/src/messages-schema.ts
index e72521c99b1..7eadeed7329 100644
--- a/packages/protobuf/src/messages-schema.ts
+++ b/packages/protobuf/src/messages-schema.ts
@@ -1036,7 +1036,7 @@ export const CardanoSignMessageInit = Type.Object({
     signing_path: Type.Array(Type.Number()),
     payload_size: Type.Number(),
     hash_payload: Type.Boolean(),
-    display_ascii: Type.Boolean(),
+    prefer_hex_display: Type.Boolean(),
     address_parameters: Type.Optional(CardanoAddressParametersType),
     derivation_type: EnumCardanoDerivationType,
 });
@@ -1056,6 +1056,7 @@ export type CardanoSignMessageFinished = Static<typeof CardanoSignMessageFinishe
 export const CardanoSignMessageFinished = Type.Object({
     signature: Type.String(),
     address: Type.String(),
+    pub_key: Type.String(),
 });
 
 export type Success = Static<typeof Success>;
diff --git a/packages/protobuf/src/messages.ts b/packages/protobuf/src/messages.ts
index 2302eaf1dd7..35295748ffa 100644
--- a/packages/protobuf/src/messages.ts
+++ b/packages/protobuf/src/messages.ts
@@ -952,7 +952,7 @@ export type CardanoSignMessageInit = {
     signing_path: number[];
     payload_size: number;
     hash_payload: boolean;
-    display_ascii: boolean;
+    prefer_hex_display: boolean;
     address_parameters?: CardanoAddressParametersType;
     derivation_type: CardanoDerivationType;
 };
@@ -972,6 +972,7 @@ export type CardanoMessageItemHostAck = {};
 export type CardanoSignMessageFinished = {
     signature: string;
     address: string;
+    pub_key: string;
 };
 
 // Success