diff --git a/user_auth/v3_0/IUserAuthInterface.idl b/user_auth/v3_0/IUserAuthInterface.idl
index e0684cdea828323f7cf6c4bb5b205d336e0ccf5d..6feacf88f3e3a8790d89fd59d8f8945d9dd1dd41 100644
--- a/user_auth/v3_0/IUserAuthInterface.idl
+++ b/user_auth/v3_0/IUserAuthInterface.idl
@@ -508,5 +508,22 @@ interface IUserAuthInterface {
      * @version 1.0
      */
     GetCredentialById([in] unsigned long credentialId, [out] struct CredentialInfo info);
+    /**
+     * @brief Verify token and return the plainText. 
+     *
+     * @param tokenIn Token signed by userAuth.
+     * @param allowableDuration Allowable duration of token.
+     * @param tokenPlainOut Token plainText.
+     * @param rootSecret protection key for the user file key.
+     *
+     * @return Returns <b>0</b> if the operation is successful.
+     * @return Returns a non-zero value if the operation fails.
+     *
+     * @since 5.1
+     * @version 1.0
+     */
+    VerifyAuthToken([in] unsigned char[] tokenIn, [in] unsigned long allowableDuration,
+        [out] struct UserAuthTokenPlain tokenPlainOut, [out] unsigned char[] rootSecret);
+
 }
 /** @} */
diff --git a/user_auth/v3_0/UserAuthTypes.idl b/user_auth/v3_0/UserAuthTypes.idl
index b080723a2562a24f68c87301c47d2c4cb9fb3a8e..f82a50bed9f7d60e8535965765074bdb455fee62 100644
--- a/user_auth/v3_0/UserAuthTypes.idl
+++ b/user_auth/v3_0/UserAuthTypes.idl
@@ -536,4 +536,41 @@ struct GlobalConfigParam {
     /** Specified authTypes, shouldn't empty. See @{AuthType}.*/
     int[] authTypes;
 };
+
+/**
+ * @brief User auth token plain.
+ *
+ * @since 5.1
+ * @version 1.0
+ */
+struct UserAuthTokenPlain {
+    /** Token version. */
+    unsigned int version;
+    /** User ID. */
+    int userId;
+    /** Challenge of the token. */
+    unsigned char[] challenge;
+    /** Time interval between token signed and verified. */
+    unsigned long timeInterval;
+    /** Authentication trust level. */
+    unsigned int authTrustLevel;
+    /** Authentication type. See @{AuthType}. */
+    int authType;
+    /** Auth mode. */
+    int authMode;
+    /** Security level. */
+    unsigned int securityLevel;
+    /** Token type. */
+    int tokenType;
+    /** SecureUid of the user. */
+    unsigned long secureUid;
+    /** Enrollment ID. */
+    unsigned long enrolledId;
+    /** Credential ID. */
+    unsigned long credentialId;
+    /** Collector udid. */
+    String collectorUdid;
+    /** Verifier udid. */
+    String verifierUdid;
+};
 /** @} */
\ No newline at end of file