TWI246345B - System and method for controlling a mobile terminal using a digital signature - Google Patents

System and method for controlling a mobile terminal using a digital signature Download PDF

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Publication number
TWI246345B
TWI246345B TW093123185A TW93123185A TWI246345B TW I246345 B TWI246345 B TW I246345B TW 093123185 A TW093123185 A TW 093123185A TW 93123185 A TW93123185 A TW 93123185A TW I246345 B TWI246345 B TW I246345B
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TW
Taiwan
Prior art keywords
mobile terminal
message
terminal
server
login
Prior art date
Application number
TW093123185A
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English (en)
Other versions
TW200518605A (en
Inventor
Kyung-Im Jung
Original Assignee
Samsung Electronics Co Ltd
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Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of TW200518605A publication Critical patent/TW200518605A/zh
Application granted granted Critical
Publication of TWI246345B publication Critical patent/TWI246345B/zh

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    • G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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  • Spectroscopy & Molecular Physics (AREA)
  • Discrete Mathematics (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Selective Calling Equipment (AREA)
  • User Interface Of Digital Computer (AREA)
  • Information Transfer Between Computers (AREA)
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12463览 九、發明說明： 【發明所屬之技術領域】 本發明是由關於使用數位簽名的行動終端的控制系 統與方法，特別是有關於伺服器根據由使用者設定行動^ 端狀態資訊而準備之命令訊息以及利用此預備之命令气拳 而控制對應行動終端之使用數位簽名行動終端的控制系: 與方法。 ' 【先前技術】 务通常，如果使用者遺失其行動終端(mabile terminal：)， 藉由傳送控制信號給遺失的行動終端以關閉行動終端或者 致使行動終端處於閉鎖狀態，使用者可以禁止第三者使用 行動終端並且防止存儲在行動終端的資訊被存取。 —無論如何，在如此遙控行動終端的傳統方法中，存在 著不可此辨別請求控制行動終端的實體之問題，它也 非法者不良地控制。 ϋ 【發明内容】 本發明被設想解決上述的問題。本發明的目的是提供 -種使用數位簽名的行祕端的控·統與方法， 月艮器根據由使用者設定之行動終端狀態資訊而準備ς令訊 備的命令訊息，以便只經由被 纽提供飼服 於相關行動終端的命令;息二;=== 1246345 * 14235pif.doc 備的訊息之後傳送之。命八 操作命令和數位簽名、^行動終端之 ==:資:庠單數 早置:行第行一= 資訊進行準;定之行動終端狀態 息。 7 σίι心以及傳送所準備的命令訊 從伺點’即提供一種行動終端，其中 命令訊息進行例如關Ρ =息被認證’並且根據被認證的 ΐ二=單=:r?位簽名。行動終端也許包括 從伺服器傳送而來的“::疋第:二:，單元用以認證 服器傳送登入訊自廿^ 第一控制早兀用以請求伺 息控制關機； 的行步：:即提供:種使用數位簽名 息;並且如果由使用者設i之欠f入請求訊 入不許可狀能訊心’或者如果行動終端的狀態是登 命令，行動°許包括用於行動終端之操作 動㈣的唯-編號，和用於認證之數位簽名。 1246345 ^^Spitdoi 虞本發明的更進一步觀點， 名的行動終端的控制方法，包括供—種使用數位簽 服器傳送登入訊息；接收由 端開機時請求飼 動終端狀態資訊所準備之命令^根f由使用者設置之行 f以及在完成命令訊的命令訊 則導致行動終端不或者如果訊息包含不准登入 此外，當行動終端被設置在安 執行請求登人訊息之步驟。藉由:二H，則可能 為讓本發明之上述和其他目的、特徵和優點能更明顯 Μ ’下文特舉較佳實施例，並配合所附圖式，作詳細 明如下。 、 【實施方式】 之 父下本發明的較佳實施例將參照附圖被詳細描述 圖1是根據本發明實施例所繪示的一種使用數位簽名 的行動終端的控制系統方塊圖。此系統包括伺服器（server) 100，伺服器100包含第一傳送/接收單元（flrst transmitting/receiving unit) 110、資料庫單元(database unit) 120、第一認證單元(flrst authentication unit) 130 以及第一 1246345 14235pif.doc 控制單元(first control unit) 140。此系統更包括行動終端 (mobile terminal) 200，行動終端200包含第二傳送/接收單 元(second transmitting/receiving unit) 210、登入處理單元 (l〇g_on processing unit) 22〇、電源供應單元(ρ〇·Γ 卿_ unit) 230、弟一認證單元(second authentication unit) 240 和 第二控制單元(second control unit) 250。 伺服裔100根據由使用者設定的行動終端狀態資訊來 準備用於對應的行動終端200之命令訊息，加入數位簽名 至預備之命令訊息，並且傳送最終命令訊息給行動終端。 第一傳送/接收單元11〇把第一控制單元14〇所準備的 命令訊息傳送給行動終端200，並且接收由行動終端2〇〇 所送出之登入請求訊息。在此，第一傳送/接收單元11〇包 括用以傳送和接收訊息之多媒體訊息(multimedia message service，以下簡稱MMS)處理單元，以及用以經由無線網 際網路傳送與接收資訊之超文件傳送協定（如^批对 transfer protoco卜以下簡稱HTTP)處理單元。 資料庫單元120儲存行動終端資訊以及由使用者設定 之行動終端狀態資訊。在此，資料庫單元12〇存儲行動終 端 200 的唯一編號（unique number)、連續數（serial _ber)、狀態資訊以及其它資訊。同時，狀態資訊表示行 動終端200的當前狀態。例如，依照是否誤置了行動終端 2&〇〇,狀態資訊包括由制者所設置行動終端之關機狀 態(power_off)或登入/出(i〇g On/〇f〇狀態資訊。 1246345 14235pif.doc 第-認證單元13G處理行動終端之認證。在此， =認證單元m油服战供触簽名與雜，以保證 2認伺服器⑽的合法性。也就是說，數錄名是用於 M、證明科備了電子域的人衫為本人的—個署名。 數位簽名帛以條轉遞的電子文件之原始内容未被修改。 mi的使用，具有可以容易地轉遞與保護數位文 件以免Xd人偽造之優點，並且可以自_維護時間標 _me stamp)。在此，數位簽名也許被瞭解作為rsa (rrs=hrr-Adleman)數位簽名、ECDSA.(橢圓曲線數位 簽名肩异法)數位簽名，或類似之數位簽名。進一步，馮噔 ，以^認使用者並且包括電子資訊，此電子資訊“憑 k官理中心(eertifkation authGrity)證實與證明在數位簽名 驗證金鑰與擁有驗證金.自然人或合法實體之間的關 係，，及諸如此類料4私密或公_憑證管理中心發 4丁憑證’並且藉由在發行人名字和其他資料上簽署使用者 公開金鑰和資訊與憑證管理中心崎章金糾產生瑪證。 能^元14Γ罐由使用者所設定之行動ΐ端狀 L貝祝而準備^令訊息，並且輯控仙便將解備的命 令訊息傳達給行動終端2〇〇。例如，如果使用者遺失行動 終端200，行動終端狀態資訊會被設置為「關機」。如果 使用者重獲該遺失的行祕端·，行動終端狀態資訊合 被設置為「登入」（獲准登入）。進一步，命令訊息是一^ 用以控制行動終端操作的訊息，卩及包括操 、、 1246345 14235pif.doc 數位簽名與用於行動終端200 和連續數之憑證。 行動終端200的唯一編號 订祕端200驗證由飼服器1〇〇所傳送之命令訊息， 依照已驗證的命令訊息進行關機與登入/登出操作，以及在 關機狀怨執行安全登入模式(sec㈣m 當行動 終端衫關狀_，它寄發登战&期顧。在
，安王t入核式代表在該模式下只可以在被認證的伺服 器100傳送獲准登入訊息至行動終端200時被登入。此登 城息代表用以要求伺服器是否批准登人行動終端之 孔A進Y此行動終端也許被辨認作為智慧型行動電 居(311131^1101^)、行動電話((^11111沉沖〇1^)、個人數位助理 (PDA)、口袋型電腦(pocket PC)等等。 第一傳送/接收單元21〇接收到由伺服器丨⑻所傳送來 的〒7 Λ息，並且傳送行動終端2〇〇的登入訊息給伺服器
1〇〇。在此，第二傳送/接收單元21〇包括用以傳送和接收 訊息的MMS處理n(未緣示），以及用以經由無線網際網路 傳送和獲得資訊的HTTP處理器（未繪示）。 登入處理單元220執行行動終端2〇〇的登入。例如， 當從伺服器1〇0傳送獲准登入訊息（log-on approvai message)至該處，則登入處理單元22〇登入行動終端2〇〇。 電源供應單元230執行行動終端200之開/關機。例 如，當從伺服器1〇〇傳送關機訊息至該處，則電源供應單 元230切除供應行動終端200之電源。 11 1246345 14235pif.doc 第二認證單元240驗證由伺服器1〇〇送來的訊自。 單元130被傳送之數位簽名解密:及』 ^數位簽名，第二認證單元240進行_服器湖之認 證0 第二控制單元250請求飼服器⑽送出登入部自 ^藉由根據飼服器所傳送的命令訊息之操作而控制^级 =由Γ是說’當從飼服器100傳送命令訊息時，： ，息猎由第二認證單元而被驗證。#完成了驗 單元250依據被傳送的命令訊息’經由控^電源 刀除了供應行動終端200之電源，或者是 3彳ί理單元220而登入或登出行動終端·。 圖疋根據本發明所綠示的一種流程圖，其概 明在使用數位簽名㈣行祕财 : 端之電源的過程。首杏，1里杜m心丨荆闭权供、、、口订動終 使_卩__ 失其行動終端2〇0, ⑻〇〇)。 服°。100關閉提供給其行動終端之電源 息並= 2求，然後準備關機訊 證、===及名與用於行動终端200之憑 數位簽名與之自第一^制^元140準備包含有 200日#，楚-你、、，哥機汛心，並且傳送訊息給行動終端 自送7接收單元21〇收到從伺服器100所傳送 之訊息並將其傳送給第二控制單^ 25〇。 12 Ι24634^ 相應地，第二控制單元250透過第二認證單元240嶝 實被傳送的訊息(S104)。也就是說，藉由將包含在被傳送 Λ息中的數位簽名和憑證加以解密，並且核實被解密的資 Λ以進行認證。尤其，將包含在被傳送訊息中的行動終端 200之唯一編號與被存放在記憶單元(未顯示）中的行動終 _ 端200之編號相比較。如果所比較的編號是相同的，則接 著核實包含在被傳送訊息、中的數位簽名。在此，根據被存 放在第二認證單元240中的憑證進行數位簽名的檢驗。 當在認證過程期間完成檢驗(S106)，第二認證單元240 · 傳送檢驗結果給第二控制單元25〇,並且第二控制單元25〇 依照所傳送汛息的内容而切斷了提供給行動終端2〇〇之電 源。此時，第二控制單元25〇進行了諸如將行動終端2〇〇 的模式设置為安全登入模式之控制，並且電源供應單位 230關閉了提供給行動終端2〇〇的電源(sl〇8)。 當行動終端200被關機了，第二控制單元25〇傳送關 機完成訊息給伺服器1〇〇。此時，如果伺服器1〇〇在預定 的時間内未收到行動終端200之關機完成訊息，步驟S102 _ 至S108將被重複。在此，使用者或伺服器1〇〇可以任意 地設置該預定的時間以及重覆步驟S102至S108的次數。 同時，甚至如果伺服器1〇〇在將各重複步驟重覆進行 了所設定次數之後依然未收到行動終端2〇〇之關機完成訊 息’伺服裔100再證實是否使用者打算執行行動終端2〇〇 的關機。如果使用者再請求行動終端200的關機，伺服器 100再次執行步驟S102至S108。 13 12463%琴 圖3是根據本發明崎示的另—種流程圖，其 說明使用數位簽名控制行動終端之方法。首 ^ ^ 端2曙應以電源(S200) ’第二控制單：25〇以: ，求訊息給伺服器_以請求是否登人行動終端_二 息(S202)。在此’第二控制單元25〇帛備登入請 並 t經由第二傳送/接收單元210將其傳送給词服器刚Γ此 時’由第二控制單W50所準備的訊息包含用以登入行動 終端200之要求，以及行動終端2〇〇的唯一編號。
同時，其假設當行動終端200開機時動 被設置在安全登入模式下。 、知 第-傳送/接收單元110收到從行動終端200傳送之登 入請求訊息並且將其傳送給第一控制單元140。第一栌制 單元140從資料庫提取由使用者所設定之行動終端狀^資 讯，檢查對應的行動終端200之狀況(步驟S2〇4)，以及根 據行動終端狀態資訊準備命令訊息。 ^
β也就是說，如果行動終端2〇〇的狀態（由使用者所設置) 是獲准登入的狀態，則第一控制單元14〇準備獲准登1訊 ，並且傳送該訊息給行動終端2〇〇 (S2〇6、S2〇幻。如果不 是，則第一控制單元140準備不准登入訊息（1〇g_〇n disapproval message)並且傳送該訊息給行動終端2〇〇 =210)。在此，由第一控制單元14〇傳送之訊息包括用於 =動終端200之操作命令與數位簽名、其唯一編號以及連 續數。在此，用於行動終端2〇〇之操作命令參如關於獲准/ 不准登入之操作命令。唯一編號參如行動終端的特殊編號 14 1246345 14235pif.doc (例如，智慧型行動電話之電話號碼，即〇11_χχχ_χχχχ)。 數位簽名得以將發送訊息之伺服器100的安全性和可靠性 之確認致能。連續數用以確定由第一控制單元14〇所傳送 之訊息是否一再被傳送。第一控制單元14〇任意地設置此 連續數。 然後，當伺服器100之第一控制單元140準備包含數 位簽名和憑證之訊息並且傳送該訊息給行動終端2〇〇時， 第二傳送/接收單元210接收從伺服器1〇〇送來之訊息並且 傳送給第二控制單元250。 ^ 相應地，第二控制單元250經由第二認證單元24〇證 實所傳送的訊息(S212)。也就是說，藉由將包含在傳送的 訊息中之數位簽名和憑證解密並且核實此被解密的資訊以 進行涊證。尤其是，被包含在傳送訊息中之行動終端2⑻ 的唯一編號相較於被存放在記憶單元(沒被顯示）中的行動 終端200之編號。如果被比較的編號是相同的，包含在被 傳送訊息中的數位簽名然後被核實。在此，經由被存放在 第二認證單元240中的憑證而進行數位簽名之驗證。 爾後’當在認證過程期間完成驗證(S214)，第二認證 單元240傳送驗證結果給第二個控制單元25〇，並= 控制單元250依照對應於從伺服器1〇〇傳送訊息内容之操 作τ 7操作行動終端200。如果被傳送訊息的操作命八是 批准登入行動終端·之訊息，職行登人行動終端^ 的程序(sm、咖）。如果被傳送訊息的操作命令是不許 15 •pif.doc 登入行動終端200之訊息，則不執行登入行動終端·2〇〇的 程序。 同時，如果行動終端200登入在安全模式下，則使用 者能維護設定安全登入模式，或在發布安全功能後使用行 動終端。 圖4是根據本發明的實施例所展示的一種命令訊息 結構。在此，命令訊息參如用以命令的操作之訊息，其與 行動終端200的關機與獲准/不准登入有關。 如圖所示，關機訊息包括用以命令關機之訊息、行動 終端200㈣一編號(例如智慧型行動電話的識別碼)以及 連續數(或亂數）。在關機訊息的傳輸上，由伺服器ι〇〇所 簽章之數位簽名與用以繼簽名之憑證更含糊 息中、’然後傳送全部關機訊息。在此，在智慧型行 的情況下，行動終端200的唯-編號係對應於電話號碼， 數是任意地被設置於各訊息中之數字以便此訊息 無法被Μ用。 進一步 且明求汛心包括用以請求行動終端200登 入之訊息與行動終端200的唯一編號。 動二〇 =隹Γ准登入訊息包括用以獲准/不准登入行 !^終端的唯—邮χ及連續數。 f獲准/不轉人訊息的傳輸上，由錬器刚簽章之數位 4名和用以驗證簽名之馮说姑勺 息中，然後傳送ίίίτ 獲准/不准登入訊 16 1246345 14235pif.doc 根據上述本發明’飼服器根據由使用者設定之 端狀態資訊準備命令訊息，並且傳送所準備的命令訊息^ 仃動終端，以及行動終端證實被傳送的命令訊息。因^ 具有只能經由被認證的訊息控制行動終端之優點。 進-步，如果使用者要求行祕機，則行動
If 3人模式下_關機。如果獲得此行動終端 人行動終端，只能在經由數位簽名而進行 ^絲行動終端中，其具有可能限制未許可的第 仃動終端的使用之優點。 限定ΓΐΓΓ已以較佳實施例揭露如上，然其並非用以 技藝者，在不脫離本發明之精神 *可作些許之更動錢飾，因此本發明之保護 耗圍虽視後附之申請專利範圍所界定者為準。 ’、 【圖式簡單說明】 動終要地顯示一種使用數位簽名的行 ^2是根據本發明一種使用數位簽名的行動終端的控 圖】方法’概要地說明關閉提供給行動終端電源過程之流程 行動地說明另1使用數位簽名的 實施例所顯示命令構。 17 12463嗝释 100 :伺服器（server) 200 :行動終端(mobile terminal) S100〜Sl〇8 :根據本發明一種使用數位 Γ控财法所描述關提供'给行動终”«程 _ S200〜S218 :根據本發明所 仃動終端的控制方法之各步驟 〜種使用數位簽名的

Claims (1)

  1. I24634535pifd〇c 十、申請專利範圍： L 一種伺服器，用以控制一行動終端（mobile terminal)，其中該伺服器根據由一使用者設置之行動終端 狀悲賓訊而準備一命令訊息（command message)用於該行 動終’然後在該祠服將一數位簽名signature) 加入該π卩令訊息之後傳送該命令訊息至該行動終端。 2·如申請專利範圍第1項所述之伺服器，其中該命令 訊息包括，用於該行動終端之該操作命令與該數位簽名、 對巧於該行動終端之一唯一編號(unique number)、以及一 連縯數(sequence number)。 3·如^申請專利範圍第1項所述之伺服器，包括： > -貝料庫單70，用以存儲行動終端資訊以及由該使用 者設置之該行動終端狀態資訊； 二第一認證單元，用以認證該行動終端；以及 狄㈣控制單元’用以根據由該使用者設置之該行動 準備該命令訊息，並且更用於傳送所準備 1自仃動終端’用以接收從—伺服11傳送之一命令 該:認證的==該;:終端所認證，並且根據 登入以及料。了該仃祕端之操作，包括關機、 5.如申請專利範圍第 令訊息包括用於該行祕端之，其中该命 終端之一唯一編Fs 刼作〒令、對應於該行動 兩號以及用㈣證之—數位簽名。 19 1246345 H235pif.doc 6·^申請專姆㈣4項所述之行轉端，包括： 拿·以及^且單元，用以認證從該伺服器傳送來之該命令訊 行動3制單元，用以請求該伺服器發送—登人訊息至該 今行動且根據從該舰器傳送來之該命令訊息控制 。亥仃動終端之關機、登场登出之㈣。 ^一種使用數位簽名的行動終端控制系統，包括·· 資娜以根據由—使用者設置之行動終端狀態 端之:命令訊息，.將-數位簽名 一·^有之〒”fL息，以及傳送該合成訊息，·以及 命人^了動終端，用崎收並且認證從健轉送來之該 ‘登認證的命令訊息進行包括關機、登 且出等關於该订動終端之操作。 方法^種使用數位簽名的行動終端的控财法，該控制 由-使用者設置-行動終端之狀態； 從該行動終端接收一登入請求訊息； 獲准終端之狀態係—登人獲准狀態，則準備- 如果該行動終端之狀態係一登 -不准登入訊息；以及 〜狀〜貝J丰備 傳送所準備之訊息給該行動終端。 端二申:Π=8項所述使用數位签名的行動終 控制料，其找獅^^不耗人訊息包括用於 20 1246345 14235pif.doc 該行動終端之一操作命令、 用以認證之一數位簽名。 該行動終端之一唯一編號以及 方法方法用數位簽名恤動終端的㈣紐，該控制 自.當該行動終端被開機時’請求伺服器傳送-登入訊 η 息’該命令訊息係'依照在該概器中由 者ά又置之行動終端狀態資訊所準備之； 認證該被接收之命令訊息；以及 在完成該命令訊息之認證錢，如果該命令訊息包含 二准登入，則導致該行祕端被登人，或如果該命令訊息 匕含不准登入，則導致該行動終端不被登入。 11·如申請專職圍第1G項所述使賴位簽名的行動 ^端的控制方法，其中當該行動終端被設置在一安全登入 ^S(secure log-on mode)下，則執行請求該登入訊息之步 ，驟0 12·如申請專利範圍第U項所述使用數位簽名的行動 終端的控制方法，其中設置該安全登入模式之步驟包括·· 接收一關機訊息，該關機訊息係由該伺服器依照使用 者之一關機請求所準備； 認證從伺服器接收之該關機訊息； 當完成該命令訊息的認證時，則關閉被提供給該行 終端之電源；以及 21 124634^35^ 安全終端關機時，則設置該行動終端的模式為該 終端12項_使帛數崎名的行動 提供其中當完成該命令訊息的認證時關閉被 」仃動終端電源之步驟更包括#該行動終端被關機 ^關機完成訊息給該伺服器。 终山14·如申請專利範圍第10項所述使用數位簽名的行動 ς。勺控制方法，其中該命令訊息包括用於該行動終端之 4κ作命令、該行動終端之一唯一編號以及用以認證之— 數值簽名。 22
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