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JPWO2020205217A5
JPWO2020205217A5 JP2021558614A JP2021558614A JPWO2020205217A5 JP WO2020205217 A5 JPWO2020205217 A5 JP WO2020205217A5 JP 2021558614 A JP2021558614 A JP 2021558614A JP 2021558614 A JP2021558614 A JP 2021558614A JP WO2020205217 A5 JPWO2020205217 A5 JP WO2020205217A5
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challenge
server
response
client device
machine
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JP2022527798A (en
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Priority claimed from US16/369,823 external-priority patent/US11792024B2/en
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Claims (25)

システムであって、
導出関数を使用してクライアントデバイス上でチャレンジを生成するためのクライアント装置のローカルチャレンジ生成器と、
指定されたチャレンジ応答プロトコルによって定義されるようにチャレンジ応答を生成するための前記クライアント装置の認証エンジンと、を備え、
前記認証エンジンが、前記チャレンジと前記チャレンジ応答とをサーバに送信し、前記サーバが、前記チャレンジが指定された時間ウィンドウ内で生成されたかどうかを判定することによって、少なくとも部分的に、前記チャレンジ応答を検証する、システム。 a system,
a client device local challenge generator for generating a challenge on the client device using the derivation function;
an authentication engine of the client device for generating a challenge response as defined by a specified challenge-response protocol;
wherein the authentication engine sends the challenge and the challenge response to a server, and the server determines, at least in part, whether the challenge was generated within a specified time window. system to verify. 前記認証エンジンが、秘密鍵を有する前記チャレンジを通じて暗号化署名を生成することにより、前記チャレンジ応答を生成し、前記サーバが、対応する公開鍵を使用して前記チャレンジ応答を検証し、前記サーバが、無効な暗号化署名を有するいかなる応答も拒絶する、請求項１に記載のシステム。 the authentication engine generating the challenge response by generating a cryptographic signature over the challenge with a private key; the server verifying the challenge response using a corresponding public key; , rejecting any response with an invalid cryptographic signature. 前記チャレンジが、定義されたプレフィックス及び動的入力データを入力として含む鍵導出関数を使用して生成され、前記サーバが、前記定義されたプレフィックス及び動的入力データ入力を認識するか、又は再現するように構成されている、請求項１に記載のシステム。 The challenge is generated using a key derivation function that includes as input a defined prefix and dynamic input data, and the server recognizes or reproduces the defined prefix and dynamic input data input. 2. The system of claim 1, configured to: 前記動的入力データが、前記チャレンジが前記指定された時間ウィンドウ内で生成されたかどうかを判定するように、前記サーバによって使用可能な時間を含む、請求項３に記載のシステム。 4. The system of claim 3, wherein the dynamic input data includes time available by the server to determine whether the challenge was generated within the specified time window. 前記サーバが、リプレイアタックを防止するために、それぞれの暗号化公開鍵に関連する全ての使用済みチャレンジを定義された時間保持する、請求項４に記載のシステム。 5. The system of claim 4, wherein the server retains all used challenges associated with each encrypted public key for a defined period of time to prevent replay attacks. 動的入力データが、前記クライアント装置が既知である現在時間を含み、前記サーバが、前記現在時間が許容ウィンドウ内にある場合に前記動的入力データが許容可能であると判定する、請求項４に記載のシステム。 5. Dynamic input data includes a current time known to the client device, and wherein the server determines that the dynamic input data is acceptable if the current time is within an acceptable window. The system described in . 動的入力データが、前記クライアント装置とサーバとの間で以前に交換されたデータを含む、請求項３に記載のシステム。 4. The system of claim 3, wherein dynamic input data includes data previously exchanged between the client device and server. 前記以前に交換されたデータが、前記クライアント装置と前記サーバとの間でトランスポート層セキュリティ（ＴＬＳ）セッションを確立するために交換されたデータを含む、請求項７に記載のシステム。 8. The system of claim 7, wherein the previously exchanged data includes data exchanged to establish a Transport Layer Security (TLS) session between the client device and the server. 前記導出関数が、Ａｒｇｏｎ２鍵導出関数又はｐｂｋｄｆ２鍵導出関数を含む、請求項１に記載のシステム。 2. The system of claim 1, wherein the derivation function comprises an Argon2 key derivation function or a pbkdf2 key derivation function. 前記導出関数が、ハッシュ関数を含む、請求項１に記載のシステム。 2. The system of claim 1, wherein said derivation function comprises a hash function. 前記チャレンジ応答プロトコルが、Ｆａｓｔ Ｉｄｅｎｔｉｆｙ Ｏｎｌｉｎｅ（ＦＩＤＯ）登録／ｍａｋｅＣｒｅｄｅｎｔｉａｌ動作、ＦＩＤＯ認証／ｇｅｔＡｓｓｅｒｔｉｏｎ動作、ＳａｆｅｔｙＮｅｔプロトコル、又はＡｎｄｒｏｉｄ Ｐｒｏｔｅｃｔｅｄ Ｃｏｎｆｉｒｍａｔｉｏｎプロトコルを含む、請求項３に記載のシステム。 4. The system of claim 3 , wherein the challenge-response protocol comprises a Fast Identify Online (FIDO) registration/makeCredential operation, a FIDO authentication/getAssertion operation, a SafetyNet protocol, or an Android Protected Confirmation protocol. 前記定義されたプレフィックスが、ＦＩＤＯ ＡｐｐＩＤ又はＲｐＩｄを含む、請求項１１に記載のシステム。 12. The system of claim 11, wherein the defined prefix comprises a FIDO AppID or RpId. プログラムコードが格納されている非一時的な機械可読媒体であって、前記プログラムコードが、機械によって実行されるとき、前記機械に、
導出関数を使用して、クライアント装置上でチャレンジを生成する動作と、
指定されたチャレンジ応答プロトコルによって定義されるように、前記クライアント装置上でチャレンジ応答を生成する動作と、
前記チャレンジと前記チャレンジ応答とを前記クライアント装置からサーバに送信する動作であって、前記サーバが、前記チャレンジが指定された時間ウィンドウ内で生成されたかどうかを判定することによって、少なくとも部分的に、前記チャレンジ応答を検証する、送信する動作と、を実行させる、機械可読媒体。 A non-transitory machine-readable medium having program code stored therein, the program code, when executed by a machine, causing the machine to:
an act of generating a challenge on the client device using the derivation function;
an act of generating a challenge-response on the client device , as defined by a specified challenge-response protocol;
an act of sending the challenge and the challenge response from the client device to a server, the server determining, at least in part, whether the challenge was generated within a specified time window; A machine-readable medium causing the act of verifying and transmitting the challenge response to be performed. 前記チャレンジ応答が、秘密鍵を有する前記チャレンジを通じて暗号化署名を生成することにより生成され、前記サーバが、対応する公開鍵を使用して前記チャレンジ応答を検証し、前記サーバが、無効な暗号化署名を有するいかなる応答も拒絶する、請求項１３に記載の機械可読媒体。 The challenge response is generated by generating a cryptographic signature over the challenge with a private key, the server verifies the challenge response using a corresponding public key, and the server verifies an invalid cryptographic signature. 14. The machine-readable medium of claim 13, rejecting any response with a signature. 前記チャレンジが、定義されたプレフィックス及び動的入力データを入力として含む鍵導出関数を使用して生成され、前記サーバが、前記定義されたプレフィックス及び動的入力データ入力を認識するか、又は再現するように構成されている、請求項１３に記載の機械可読媒体。 The challenge is generated using a key derivation function that includes as input a defined prefix and dynamic input data, and the server recognizes or reproduces the defined prefix and dynamic input data input. 14. The machine-readable medium of claim 13, configured to: 前記動的入力データが、前記チャレンジが前記指定された時間ウィンドウ内で生成されたかどうかを判定するように、前記サーバによって使用可能な時間を含む、請求項１５に記載の機械可読媒体。 16. The machine-readable medium of claim 15, wherein the dynamic input data includes a time available by the server to determine whether the challenge was generated within the specified time window. 前記サーバが、リプレイアタックを防止するために、それぞれの暗号化公開鍵に関連する全ての使用済みチャレンジを定義された時間保持する、請求項１６に記載の機械可読媒体。 17. The machine-readable medium of claim 16, wherein the server retains all used challenges associated with each cryptographic public key for a defined period of time to prevent replay attacks. 動的入力データが、前記クライアント装置に対して既知である現在時間を含み、前記サーバが、前記動的入力データが許容ウィンドウ内にある場合に許容可能であると判定する、請求項１６に記載の機械可読媒体。 17. The dynamic input data of claim 16, wherein the dynamic input data includes a current time known to the client device, and wherein the server determines that the dynamic input data is acceptable if it is within an acceptable window. machine-readable medium. 動的入力データが、前記クライアント装置とサーバとの間で以前に交換されたデータを含む、請求項１５に記載の機械可読媒体。 16. The machine-readable medium of claim 15, wherein dynamic input data includes data previously exchanged between the client device and server. 前記依然に交換されたデータが、前記クライアント装置と前記サーバとの間でトランスポート層セキュリティ（ＴＬＳ）セッションを確立するために交換されたデータを含む、請求項１９に記載の機械可読媒体。 20. The machine-readable medium of claim 19, wherein the previously exchanged data comprises data exchanged to establish a Transport Layer Security (TLS) session between the client device and the server. 前記導出関数が、Ａｒｇｏｎ２鍵導出関数又はｐｂｋｄｆ２鍵導出関数を含む、請求項１３に記載の機械可読媒体。 14. The machine-readable medium of claim 13, wherein the derivation function comprises an Argon2 key derivation function or a pbkdf2 key derivation function. 前記導出関数が、ハッシュ関数を含む、請求項１３に記載の機械可読媒体。 14. The machine-readable medium of Claim 13, wherein the derivation function comprises a hash function. 前記チャレンジ応答プロトコルが、Ｆａｓｔ Ｉｄｅｎｔｉｆｙ Ｏｎｌｉｎｅ（ＦＩＤＯ）登録／ｍａｋｅＣｒｅｄｅｎｔｉａｌ動作、ＦＩＤＯ認証／ｇｅｔＡｓｓｅｒｔｉｏｎ動作、ＳａｆｅｔｙＮｅｔプロトコル、又はＡｎｄｒｏｉｄ Ｐｒｏｔｅｃｔｅｄ Ｃｏｎｆｉｒｍａｔｉｏｎプロトコルを含む、請求項１５に記載の機械可読媒体。 16. The machine-readable medium of claim 15 , wherein the challenge-response protocol comprises a Fast Identify Online (FIDO) registration/makeCredential operation, a FIDO authentication/getAssertion operation, a SafetyNet protocol, or an Android Protected Confirmation protocol. 前記定義されたプレフィックスが、ＦＩＤＯ ＡｐｐＩＤ又はＲｐＩｄを含む、請求項２３に記載の機械可読媒体。 24. The machine-readable medium of Claim 23, wherein the defined prefix comprises a FIDO AppID or RpId. 方法であって、
導出関数を使用して、クライアント装置上でチャレンジを生成することと、
指定されたチャレンジ応答プロトコルによって定義さるように、前記クライアント装置上でチャレンジ応答を生成することと、
前記チャレンジと前記チャレンジ応答とを前記クライアント装置からサーバに送信することと、を含み、前記サーバが、前記チャレンジが指定された時間ウィンドウ内で生成されたかどうかを判定することによって、少なくとも部分的に、前記チャレンジ応答を検証する、方法。 a method,
generating a challenge on the client device using the derivation function;
generating a challenge response on the client device , as defined by a specified challenge-response protocol;
sending the challenge and the challenge response from the client device to a server, at least in part by the server determining whether the challenge was generated within a specified time window. , verifying the challenge response.
JP2021558614A 2019-03-29 2020-03-16 Systems and methods for efficient challenge response authentication Pending JP2022527798A (en)

Applications Claiming Priority (3)

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US16/369,823 US11792024B2 (en) 2019-03-29 2019-03-29 System and method for efficient challenge-response authentication
US16/369,823 2019-03-29
PCT/US2020/022944 WO2020205217A1 (en) 2019-03-29 2020-03-16 System and method for efficient challenge-response authentication

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