JPH06259451A - Device and method for collating signature - Google Patents

Device and method for collating signature

Info

Publication number
JPH06259451A
JPH06259451A JP258293A JP258293A JPH06259451A JP H06259451 A JPH06259451 A JP H06259451A JP 258293 A JP258293 A JP 258293A JP 258293 A JP258293 A JP 258293A JP H06259451 A JPH06259451 A JP H06259451A
Authority
JP
Japan
Prior art keywords
signature
identification number
personal identification
data
encryption key
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP258293A
Other languages
Japanese (ja)
Inventor
Takako Morinaga
貴子 森永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to JP258293A priority Critical patent/JPH06259451A/en
Publication of JPH06259451A publication Critical patent/JPH06259451A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/30Writer recognition; Reading and verifying signatures

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Collating Specific Patterns (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

PURPOSE:To provide the device and the method for collating a signature by which the signature is imitated and illegally used by making the signature of a card difficult to know for other person even if other person picks up its card in a credit card having image data of the signature enciphered in advance. CONSTITUTION:The device and the method for collating a signature are constituted of a reading means 2 for reading card information of enciphered signature card from a credit card 1, an identification number input means 3a for inputting an identification number, a cipher key generating means 4 for generating a cipher key for decoding the signature data from the identification number, a decoding means 5 for decoding the signature data from the enciphered signature data read by the reading means 2 and the cipher key generated by the cipher key generating means 4, and a display means 6 for displaying the signature data decoded by the decoding means 5.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、署名照合装置および方
法に関し、特にクレジットカード等の悪用を防止する署
名照合装置および方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signature verification apparatus and method, and more particularly to a signature verification apparatus and method for preventing misuse of credit cards and the like.

【0002】[0002]

【従来の技術】携帯できるカード等の記録部に署名を画
像データとして記録し、端末によって画像データを呼出
して、伝標等の署名と照合する技術が提案されている
(例えば特開平2−148275号)。
2. Description of the Related Art A technique has been proposed in which a signature is recorded as image data in a recording unit such as a portable card, and the image data is called by a terminal to collate with a signature such as a messenger mark (for example, Japanese Patent Laid-Open No. 2-148275). issue).

【0003】[0003]

【発明が解決しようとする課題】しかし従来の技術にお
いては、誰でも端末さえあれば署名を呼び出して見る事
ができるため、カードを落としたりした際に悪用される
問題がある。また、目視で署名の確認を行うので判断を
誤る恐れがある。
However, in the conventional technology, since anyone can call and view the signature only if they have a terminal, there is a problem that it is misused when the card is dropped. In addition, since the signature is visually confirmed, there is a risk of making a wrong decision.

【0004】[0004]

【課題を解決するための手段】本発明は、従来技術のこ
れらの問題点を解決することを目的とするものであっ
て、記録部に予め登録された暗証番号を暗号鍵として持
つ暗号化された自筆の署名の画像データを有するクレジ
ットカード等での署名照合装置および方法において、暗
号化署名データ等のカード情報をクレジットカード等か
ら読み取る読み取り手段と、暗証番号を入力する暗証番
号入力手段と、暗証番号から署名データを復号するため
の暗号鍵を生成する暗号鍵生成手段と、読み取り手段に
よって読み取られた暗号化署名データと暗号鍵生成手段
によって生成された暗号鍵とから署名データを復号する
復号手段と、復号手段によって復号された署名データを
表示する表示手段とから構成される署名照合装置および
方法を提供する。
SUMMARY OF THE INVENTION An object of the present invention is to solve these problems of the prior art, which is encrypted with a personal identification number registered in the recording unit as an encryption key. In a signature verification device and method for a credit card or the like having image data of a self-written signature, a reading means for reading card information such as encrypted signature data from a credit card and the like, and a personal identification number input means for inputting a personal identification number, Cryptographic key generating means for generating a cryptographic key for decrypting the signature data from the personal identification number, and decryption for decrypting the signature data from the encrypted signature data read by the reading means and the cryptographic key generated by the cryptographic key generating means. (EN) Provided is a signature collation device and method comprising means and display means for displaying the signature data decrypted by the decryption means.

【0005】また本発明は、記録部に予め登録された暗
証番号を暗号鍵として持つ暗号化された自筆の署名の画
像データを有するクレジットカード等での署名照合装置
および方法において、暗号化署名データ等のカード情報
をクレジットカード等から読み取る読み取り手段と、暗
証番号を入力する暗証番号入力手段と、伝票等の署名を
入力する画像入力手段と、暗証番号から署名データを復
号するための暗号鍵を生成する暗号鍵生成手段と、読み
取り手段によって読み取られた暗号化署名データと暗号
鍵生成手段によって生成された暗号鍵とから署名データ
を復号する復号手段と、復号手段によって復号された署
名データと画像入力手段によって入力された署名データ
とから特徴を抽出する特徴抽出手段と、特徴抽出手段に
よって抽出された特徴から一致度を検出する一致検出手
段と、復号手段によって復号された署名データと一致検
出手段によって検出された一致度とを表示する表示手段
とから構成される署名照合装置および方法を提供する。
Further, the present invention provides an apparatus and method for verifying a signature in a credit card or the like having image data of an encrypted handwritten signature which has a personal identification number registered in advance in a recording section as an encryption key. A reading means for reading card information such as a credit card from a credit card, a personal identification number input means for inputting a personal identification number, an image input means for inputting a signature such as a slip, and an encryption key for decrypting signature data from the personal identification number. A cryptographic key generating means for generating, a decrypting means for decrypting the signature data from the encrypted signature data read by the reading means and the cryptographic key generated by the cryptographic key generating means, and the signature data and the image decrypted by the decrypting means. A feature extraction unit that extracts a feature from the signature data input by the input unit, and a feature extraction unit that extracts the feature Providing a coincidence detecting means for detecting the degree of coincidence, the signature verification device and method comprised of a display means for displaying the degree of coincidence detected by the coincidence detecting means and the signature data decrypted by the decryption means from the symptoms.

【0006】さらに本発明は、暗証番号を暗号鍵として
持つ暗号化された自筆の署名の画像データおよび引き出
す金額に応じて暗証番号およびまたは指紋の入力の要否
を指定するデータとが予め記録部に登録されたクレジッ
トカード等での署名照合装置および方法において、カー
ド情報をクレジットカード等から読み取る読み取り手段
と、暗証番号およびまたは指紋を入力する入力手段と、
暗証番号およびまたは指紋から署名データを復号するた
めの暗号鍵を生成する暗号鍵生成手段と、読み取り手段
によって読み取られた暗号化署名データと暗号鍵生成手
段によって生成された暗号鍵とから署名データを復号す
る復号手段と、復号手段によって復号された署名データ
および暗証番号およびまたは指紋のいずれかの入力の要
否を指定するデータとを表示する表示手段とから構成さ
れる署名照合装置および方法を提供する。
Further, according to the present invention, the image data of the encrypted handwritten signature having the personal identification number as an encryption key and the data for designating the necessity of inputting the personal identification number and / or the fingerprint according to the amount of money to be withdrawn are recorded in advance. In a signature verification device and method for a credit card or the like registered in, a reading means for reading card information from the credit card or the like, and an input means for inputting a personal identification number and / or a fingerprint,
The signature data is generated from the encryption key generation means for generating the encryption key for decrypting the signature data from the personal identification number and / or the fingerprint, and the encrypted signature data read by the reading means and the encryption key generated by the encryption key generation means. Provided is a signature collation device and method including a decrypting unit for decrypting and a display unit for displaying signature data decrypted by the decrypting unit and data for designating whether or not any one of a personal identification number and a fingerprint is input. To do.

【0007】[0007]

【作用】本発明の署名照合装置および方法によれば、暗
証番号を入力したときに限り暗号化された署名が復号さ
れ、さらに復号手段によって復号された署名データと画
像入力手段によって入力された署名データとから抽出さ
れた特徴により一致度が検出され、さらに引き出す金額
に応じて何の入力もなしにもしくは暗証番号およびまた
は指紋を入力した場合に限り暗号化された署名が復号さ
れて署名が照合される。
According to the signature collating apparatus and method of the present invention, the encrypted signature is decrypted only when the personal identification number is input, and the signature data decrypted by the decryption means and the signature input by the image input means. The degree of agreement is detected by the features extracted from the data, and the encrypted signature is decrypted and the signature is verified only if there is no input or the PIN and / or the fingerprint is input according to the amount to be withdrawn. To be done.

【0008】[0008]

【実施例】以下図面を用いて本発明の実施例を説明す
る。図1ないし図3は本発明の実施例の構成の概略図で
あり、図において同じ部位は同じ符号で示し、図におい
て、1はカード、2はカード読み取り手段、3aは暗証
番号入力手段、3bは指紋入力手段、4は暗号鍵生成手
段、5は復号手段、6は表示手段、7は画像入力手段、
8は伝票、9は特徴抽出手段、10は一致検出手段であ
る。
Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are schematic views of the configuration of an embodiment of the present invention, in which the same parts are designated by the same reference numerals, in the drawings, 1 is a card, 2 is a card reading means, 3a is a personal identification number input means, 3b. Is a fingerprint input means, 4 is an encryption key generation means, 5 is a decryption means, 6 is a display means, 7 is an image input means,
8 is a slip, 9 is a feature extracting means, and 10 is a coincidence detecting means.

【0009】つぎに、このような構成における動作につ
いて説明する。図1は本発明の第1の実施例を示し、図
においてカード1から、読み取り手段2によって暗号化
された署名データが読み取られ、カード所持者によって
暗証番号入力手段3aから暗証番号を入力すると、入力
された暗証番号から暗号鍵生成手段4によって暗号鍵が
生成され、暗号化された署名データと暗号鍵とから復号
手段5によって署名データが復号され、表示手段6に表
示される。こうして表示された署名と伝票の自筆の署名
とが照合、確認される。
Next, the operation in such a configuration will be described. FIG. 1 shows the first embodiment of the present invention. In the figure, when the signature data encrypted by the reading means 2 is read from the card 1, and the card holder inputs the personal identification number from the personal identification number input means 3a, An encryption key is generated by the encryption key generation means 4 from the input personal identification number, and the signature data is decrypted by the decryption means 5 from the encrypted signature data and the encryption key, and displayed on the display means 6. The signature thus displayed and the handwritten signature of the slip are collated and confirmed.

【0010】図2は本発明の第2の実施例を示し、図に
おいてカード1から、読み取り手段2によって暗号化さ
れた署名データが読み取られ、カード所持者によって暗
証番号入力手段3aから暗証番号を入力すると、入力さ
れた暗証番号から暗号鍵生成手段4によって暗号鍵が生
成され、暗号化された署名データと暗号鍵とから復号手
段5によって署名データが復号され、表示手段6に表示
される。それと同時に、復号された署名データは特徴抽
出手段9によって特徴が抽出される。一方、伝票8に書
かれた署名が画像入力手段7によって入力された署名デ
ータも特徴抽出手段9によって特徴が抽出される。これ
らの抽出された双方の特徴は一致検出手段10によって
一致度が検出され、その一致度が表示手段6によって表
示される。このようにして、表示された一致度で署名が
照合、確認される。また、表示された署名と伝票の自筆
の署名とを照合、確認することも出来る。
FIG. 2 shows a second embodiment of the present invention. In FIG. 2, the signature data encrypted by the reading means 2 is read from the card 1 and the password is inputted from the password input means 3a by the card holder. When input, an encryption key is generated by the encryption key generation means 4 from the input personal identification number, the signature data is decrypted by the decryption means 5 from the encrypted signature data and the encryption key, and displayed on the display means 6. At the same time, the characteristics of the decrypted signature data are extracted by the characteristics extraction means 9. On the other hand, the signature extraction unit 9 extracts the features of the signature data in which the signature written on the slip 8 is input by the image input unit 7. The degree of coincidence of both of these extracted features is detected by the coincidence detection means 10, and the coincidence degree is displayed by the display means 6. In this way, the signature is collated and confirmed with the displayed degree of coincidence. Further, the displayed signature and the handwritten signature of the slip can be collated and confirmed.

【0011】図3は本発明の第3の実施例を示し、図に
おいてカード1から、読み取り手段2によって暗号化さ
れた自筆の署名の画像データおよび引き出す金額に応じ
て暗証番号およびまたは指紋の入力の要否を指定するデ
ータとが読み取られ、表示された指定に従って暗証番号
入力手段3aおよびまたは指紋入力手段3bから暗証番
号およびまたは指紋が入力されると、暗号鍵生成手段4
により暗証番号およびまたは指紋から署名データを復号
するための暗号鍵が生成され、復号手段5において読み
取り手段2によって読み取られた暗号化署名データと暗
号鍵生成手段4によって生成された暗号鍵とから署名デ
ータが復号され、表示手段6に署名が表示される。この
ようにして表示された署名と伝票の自筆の署名とが照
合、確認される。ここで、指定を定める引き出す金額の
内容は、一回の金額に設定してもよいし、適宜に複数回
の合計の金額に設定してもよいし、あるいは最も複雑な
指定をした前回の引き出し時からの累計の金額に設定し
てもよい。
FIG. 3 shows a third embodiment of the present invention. In FIG. 3, a personal identification number and / or a fingerprint is input from the card 1 in accordance with the image data of the handwritten signature encrypted by the reading means 2 and the amount of money to be withdrawn. When the password and / or the fingerprint are input from the personal identification number input means 3a and / or the fingerprint input means 3b according to the displayed designation, the encryption key generation means 4 is read.
The cryptographic key for decrypting the signature data from the personal identification number and / or the fingerprint is generated by the signature, and the signature is obtained from the encrypted signature data read by the reading means 2 in the decrypting means 5 and the encryption key generated by the encryption key generating means 4. The data is decrypted and the signature is displayed on the display means 6. The signature thus displayed and the handwritten signature of the slip are collated and confirmed. Here, the content of the withdrawal amount that determines the designation may be set to a single amount of money, or may be appropriately set to a total amount of multiple times, or the most complicated withdrawal of the previous withdrawal amount. You may set to the total amount of money from time.

【0012】[0012]

【発明の効果】以上説明したように本発明の構成ならび
に方法によれば、あらかじめ暗号化された署名の画像デ
ータを有するクレジットカード等でカードに署名がされ
ておらず、他人がそのカードを拾っても暗号鍵が分から
ない限り署名を復号しようとしても暗号化された署名し
か見る事が出来ないので、他人には容易にカードの署名
が分からないため、署名をまねして悪用されることがな
い。
As described above, according to the configuration and method of the present invention, a card is not signed with a credit card or the like having image data of a signature encrypted beforehand, and another person can pick up the card. Even if you try to decrypt the signature unless you know the encryption key, you can only see the encrypted signature, so other people can not easily understand the signature of the card, so you can imitate the signature and misuse it. Absent.

【0013】また、伝票等に書かれた署名とカードの持
つデータから復号された署名とから、両者の署名の特徴
を抽出をして一致度を検出するので、署名照合がより正
確になる。
Further, since the features of both signatures are extracted from the signature written on the slip and the signature decrypted from the data possessed by the card to detect the degree of coincidence, the signature verification becomes more accurate.

【0014】さらに、カードの持つデータから復号され
る署名が、カード保持者が設定した引き出す金額に応じ
て、カードから読み取られて直ちに表示されるケース
と、暗証番号または指紋のいずれかのみの入力によって
表示されるケースと、暗証番号および指紋の両方の入力
によって表示されるケースとが選択出来るので、引き出
す金額に応じた手数になり、過剰の煩わしさを避けるこ
とが出来る。
Furthermore, depending on the amount of money withdrawn set by the card holder, the signature decrypted from the data possessed by the card is read from the card and immediately displayed, and only the personal identification number or fingerprint is input. Since the case displayed by and the case displayed by inputting both the personal identification number and the fingerprint can be selected, the number of steps depends on the withdrawal amount, and excessive trouble can be avoided.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1の実施例を示す略図。FIG. 1 is a schematic diagram showing a first embodiment of the present invention.

【図2】本発明の第2の実施例を示す略図。FIG. 2 is a schematic diagram showing a second embodiment of the present invention.

【図3】本発明の第3の実施例を示す略図。FIG. 3 is a schematic diagram showing a third embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 カード 2 読み取り手段 3a暗証
番号入力手段 3b指紋入力手段 4 暗号鍵生成手段 5 復号
手段 6 表示手段 7 画像入力手段 8 伝票 9 特徴抽出手段 10 一致検出手段
1 card 2 reading means 3a personal identification number input means 3b fingerprint input means 4 encryption key generation means 5 decryption means 6 display means 7 image input means 8 slip 9 feature extraction means 10 match detection means

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】記録部に予め登録された暗証番号を暗号鍵
として持つ暗号化された自筆の署名の画像データを有す
るクレジットカード等での署名照合装置および方法にお
いて、暗号化署名データ等のカード情報をクレジットカ
ード等から読み取る読み取り手段と、暗証番号を入力す
る暗証番号入力手段と、暗証番号から署名データを復号
するための暗号鍵を生成する暗号鍵生成手段と、前記読
み取り手段によって読み取られた暗号化署名データと前
記暗号鍵生成手段によって生成された暗号鍵とから署名
データを復号する復号手段と、前記復号手段によって復
号された署名データを表示する表示手段とから構成さ
れ、暗証番号を入力したときに限り暗号化された署名が
復号できることを特徴とする署名照合装置および方法。
1. A signature verification device and method for a credit card or the like having image data of an encrypted handwritten signature which has a personal identification number registered in advance in a recording unit as an encryption key. A reading means for reading information from a credit card, a personal identification number input means for inputting a personal identification number, an encryption key generating means for generating an encryption key for decrypting signature data from the personal identification number, and the reading means for reading the information. The decryption means decrypts the signature data from the encrypted signature data and the encryption key generated by the encryption key generation means, and the display means displays the signature data decrypted by the decryption means, and inputs the personal identification number. A signature collating apparatus and method, wherein an encrypted signature can be decrypted only when the signature verification is performed.
【請求項2】記録部に予め登録された暗証番号を暗号鍵
として持つ暗号化された自筆の署名の画像データを有す
るクレジットカード等での署名照合装置および方法にお
いて、暗号化署名データ等のカード情報をクレジットカ
ード等から読み取る読み取り手段と、暗証番号を入力す
る暗証番号入力手段と、伝票等の署名を入力する画像入
力手段と、暗証番号から署名データを復号するための暗
号鍵を生成する暗号鍵生成手段と、前記読み取り手段に
よって読み取られた暗号化署名データと前記暗号鍵生成
手段によって生成された暗号鍵とから署名データを復号
する復号手段と、前記復号手段によって復号された署名
データと前記画像入力手段によって入力された署名デー
タとから特徴を抽出する特徴抽出手段と、前記特徴抽出
手段によって抽出された特徴から一致度を検出する一致
検出手段と、前記復号手段によって復号された署名デー
タと前記一致検出手段によって検出された一致度とを表
示する表示手段とから構成され、暗証番号を入力したと
きに限り暗号化された署名が復号できることを特徴とす
る署名照合装置および方法。
2. A signature verification apparatus and method for a credit card or the like having image data of an encrypted handwritten signature which has a personal identification number registered in advance in a recording unit as an encryption key. A reading means for reading information from a credit card, a personal identification number input means for inputting a personal identification number, an image input means for inputting a signature such as a slip, and an encryption key for generating an encryption key for decrypting signature data from the personal identification number. Key generating means, decrypting means for decrypting the signature data from the encrypted signature data read by the reading means and the encryption key generated by the encryption key generating means, the signature data decrypted by the decrypting means, and the Feature extraction means for extracting features from the signature data input by the image input means, and extraction by the feature extraction means And a display means for displaying the signature data decrypted by the decryption means and the coincidence degree detected by the coincidence detection means. A signature verification device and method characterized in that an encrypted signature can be decrypted only occasionally.
【請求項3】暗証番号を暗号鍵として持つ暗号化された
自筆の署名の画像データおよび引き出す金額に応じて暗
証番号およびまたは指紋の入力の要否を指定するデータ
とが予め記録部に登録されたクレジットカード等での署
名照合装置および方法において、カード情報をクレジッ
トカード等から読み取る読み取り手段と、暗証番号およ
びまたは指紋を入力する入力手段と、暗証番号およびま
たは指紋から署名データを復号するための暗号鍵を生成
する暗号鍵生成手段と、前記読み取り手段によって読み
取られた暗号化署名データと前記暗号鍵生成手段によっ
て生成された暗号鍵とから署名データを復号する復号手
段と、前記復号手段によって復号された署名データおよ
び暗証番号およびまたは指紋の入力の要否を指定するデ
ータとを表示する表示手段とから構成され、引き出す金
額に応じて何の入力もなしに、もしくは暗証番号および
または指紋を入力した場合に限り暗号化された署名が復
号されることを特徴とする署名照合装置および方法。
3. An image data of an encrypted handwritten signature having a personal identification number as an encryption key and data for designating the necessity of inputting a personal identification number and / or a fingerprint according to the amount of money to be withdrawn are registered in advance in a recording section. In a signature verification device and method for a credit card, etc., a reading means for reading card information from a credit card, an input means for inputting a personal identification number and / or a fingerprint, and a means for decrypting signature data from the personal identification number and / or fingerprint. Cryptographic key generating means for generating a cryptographic key, decrypting means for decrypting signature data from the encrypted signature data read by the reading means and the cryptographic key generated by the cryptographic key generating means, and decrypting by the decrypting means. The signed signature data and the PIN code and / or the data that specifies whether to enter the fingerprint. A signature verification device and method characterized in that the encrypted signature is decrypted without any input according to the withdrawal amount, or only when a personal identification number and / or a fingerprint is input. .
JP258293A 1993-01-11 1993-01-11 Device and method for collating signature Pending JPH06259451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP258293A JPH06259451A (en) 1993-01-11 1993-01-11 Device and method for collating signature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP258293A JPH06259451A (en) 1993-01-11 1993-01-11 Device and method for collating signature

Publications (1)

Publication Number Publication Date
JPH06259451A true JPH06259451A (en) 1994-09-16

Family

ID=11533373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP258293A Pending JPH06259451A (en) 1993-01-11 1993-01-11 Device and method for collating signature

Country Status (1)

Country Link
JP (1) JPH06259451A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999017255A1 (en) * 1997-10-01 1999-04-08 Cadix Inc. Method and apparatus for authenticating ic card
US6990588B1 (en) 1998-05-21 2006-01-24 Yutaka Yasukura Authentication card system
JP2009501981A (en) * 2005-07-15 2009-01-22 レボリューション マネー,インコーポレイテッド System and method for new execution and management of financial and data transactions
JP2011519102A (en) * 2008-04-29 2011-06-30 クリプトマティック リミテッド Secure data cache

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999017255A1 (en) * 1997-10-01 1999-04-08 Cadix Inc. Method and apparatus for authenticating ic card
US6990588B1 (en) 1998-05-21 2006-01-24 Yutaka Yasukura Authentication card system
JP2009501981A (en) * 2005-07-15 2009-01-22 レボリューション マネー,インコーポレイテッド System and method for new execution and management of financial and data transactions
JP2011519102A (en) * 2008-04-29 2011-06-30 クリプトマティック リミテッド Secure data cache

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