TWI668986B - Private key processing method for electronic wallet - Google Patents

Abstract

A private key processing method for an electronic wallet, wherein the electronic wallet is installed on an information device The application, the private key processing method comprises the following steps: (a) using the private key of the electronic wallet for connection payment by the information device as a first private key; (b) the electronic wallet The biometric data of the user is processed by the hash function to obtain the encoded value of the biometric feature; (c) the first private key is encrypted with the encoded value of the biometric of the user to obtain a second private key; (d) obtaining, by another hash function operation process, the transaction password set by the user to obtain an encoded value of the transaction password; and (e) performing another encryption operation process on the encoded value of the second private key and the transaction password. And get a third private key. The invention stores the third private key on the block chain network. When the user needs to pay by the electronic wallet, the user can calculate the second private key by using the transaction password and the third private key, and borrow The first private key is calculated by the biometric of the user and the second private key. Thus, the user can indirectly and securely store the first private key as a transaction confirmation by storing the third private key on the blockchain network.

Description

E-wallet private key processing method

The present invention relates to an electronic wallet, and more particularly to a multi-layer encryption method related to an electronic wallet that is set by a user's biometrics and passwords.

E-wallet is a new financial trading mechanism that uses the "blockchain" technology. During the transaction, the user of the electronic wallet confirms the transaction data with the private key of the electronic wallet after the transaction data (including the transfer amount and the transfer wallet address) is completed (that is, the digital signature is performed) ), thereby transferring the funds to a specific account to complete the financial transaction.

Specifically, the private key of the electronic wallet is a set of 256-bit character strings composed of English and numbers, which are not easily remembered by the user. Therefore, once the user loses or forgets the private key of the electronic wallet, the user can no longer use the electronic wallet to conduct transactions.

Moreover, for the privacy of the private key, if the user saves the private key on the offline information device, the user is equivalent to losing all the assets in the electronic wallet once the information device is lost. In addition, if the private key is known by someone other than the user, the other person can pay the amount by signing the digital wallet with the private key, and the user suffers the loss of the asset.

Therefore, in order to solve the above problems, an object of the present invention is to provide a multi-layer encryption method formed by a user's biometrics of a wallet and a user setting a password. In the present invention The encrypted private key can be stored on the blockchain network to ensure that the digital assets of the user are not lost and do not need to memorize the complex private key, thereby ensuring the security of the digital asset.

The technical means for solving the problems of the prior art provides a method for processing a private key of an electronic wallet, wherein the electronic wallet is an application installed in an information device, and the private key processing method comprises the following steps: (a) The digital asset voucher private key of the electronic wallet that performs the connection payment by the information device is used as a first private key; (b) the biometric data of the user of the electronic wallet is subjected to a hash function operation process. Obtaining a code value of the biometric feature; (c) performing a cryptographic operation process on the coded value of the first private key and the biometric feature of the user to obtain a second private key; (d) the transaction password set by the user Obtaining an encoded value of the transaction password through another hash function operation process; and (e) performing another encryption operation process on the second private key and the encoded value of the transaction password to obtain a third private key in the electronic wallet When the connection is paid, the information device extracts the third private key from the blockchain data, and the transaction password is processed by a function to obtain the coded value of the transaction password to be used. Transmitting a coded value of the transaction password and decrypting the third private key to obtain the second private key, and then the information device extracts the biometric data to perform a function calculation process to obtain an encoded value of the biometric feature to use The encoded value of the biometric is decrypted with the second private key to derive the first private key, whereby the obtained first private key is used to make a connection payment confirmation.

In an embodiment of the present invention, a method for processing a private key of an electronic wallet is provided, wherein the third private key is a 128-bit or 256-bit character string composed of English and numbers.

In an embodiment of the invention, a method for processing a private key of an electronic wallet is provided, wherein the biometric data is data obtained by a fingerprint, an iris or a face of the user.

In an embodiment of the present invention, a method for processing a private key of an electronic wallet is provided, wherein the encoded value of the biometric and the encoded value of the transaction password are 128-bit or 256-bit characters composed of English and numbers. string.

In an embodiment of the present invention, a method for processing a private key of an electronic wallet is provided, wherein the encryption operation is an asymmetric encryption operation, and a public key and a private key are obtained through operation processing.

In an embodiment of the invention, a method for processing a private key of an electronic wallet is provided, wherein the third private key is stored on a blockchain.

In an embodiment of the present invention, a method for processing a private key of an electronic wallet is provided, wherein the third private key is stored in a blockchain, and the information device obtains the third private key by connecting a specific blockchain through a network.

The private key processing method of the electronic wallet according to the embodiment of the present invention has the following effects. The user of the electronic wallet obtains the second private key by encrypting the biometric data with the private key of the electronic wallet, and further encrypts the second private key with the transaction password set by the user to obtain the third private key. . In this way, the private key of the electronic wallet obtains multi-level encryption operation processing through the user's biometrics and password setting, thereby ensuring that the electronic wallet only has the user's financial security for payment, and also improves the electronic wallet. Information security protection to prevent the private key from stealing the e-wallet for others to know.

D‧‧‧Information device

K‧‧‧ third private key

M1‧‧‧ Enter transaction password

M2‧‧‧ decrypts with the third private key using the encoded value of the transaction password

M3‧‧‧ draws the second private key

M4‧‧‧Enter biometric data

M5‧‧‧Use the encoded value of the biometric to decrypt with the second private key

M6‧‧‧Draw the first private key

M7‧‧‧ Confirmation of connection payment

S1‧‧‧ The private key of the e-wallet that pays for the connection by means of the information device is used as a first private key

S2‧‧‧ The biometric data of the user of the electronic wallet is processed by the hash function to obtain the encoded value of the biometric feature.

S3‧‧‧ encrypting the first private key and the encoded value of the user's biometric to obtain a second private key

S4‧‧‧ The transaction password set by the user is processed by another hash function to obtain the encoded value of the transaction password.

S5‧‧‧A second encryption key is obtained by performing another encryption operation on the encoded value of the second private key and the transaction password to obtain a third private key

T‧‧‧Pay transaction device

U‧‧‧Users

W‧‧‧Electronic Wallet

1 is a schematic diagram showing the steps of a private key processing method of an electronic wallet according to an embodiment of the present invention; and FIG. 2 is a diagram showing a decryption sequence according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described based on the first and second figures. This description is not intended to limit the embodiments of the invention, but is an embodiment of the invention.

Referring to FIG. 1 and FIG. 2 , a method for processing a private key of an electronic wallet according to an embodiment of the present invention, wherein the electronic wallet W is installed in an information device D (ie, a smart phone, a tablet, a notebook) The application method of the personal computer or the personal computer includes the following steps: S1, the private key (used as a digital asset certificate) of the electronic wallet W for which the connection is paid by the information device D is used as a a first private key; S2, the biometric data of the user U of the electronic wallet W is subjected to a hash function operation to obtain a coded value of the biometric feature; and S3, the first private key and the biometric feature of the user The encoded value is subjected to an encryption operation to obtain a second private key; S4, the transaction password set by the user U is processed by another hash function to obtain the encoded value of the transaction password; and S5, the second private The key and the encoded value of the transaction password are subjected to another encryption operation to obtain a third private key K.

In an embodiment of the invention, the third private key K is stored in the blockchain, and the third private key K is a 128-bit or 256-bit character string composed of English and numbers.

Specifically, the biometric data is data obtained by the user's fingerprint, iris or face (ie, face recognition). Moreover, the encoded value of the biometric feature (the biometric data is processed by the hash function) and the encoded value of the transaction password (the transaction password is operated by the hash function) are 128-bit or 256-bit character strings composed of English and numbers.

In an embodiment of the invention, the encryption operation is an Asymmetric Cryptography operation, and a public key (Public-Key) and a private key (Private-Key) are obtained through operation processing.

Referring to FIG. 2, the information device D is connected (ie, an information connection, such as a network connection) to the payment transaction device T, so that the electronic wallet W can be charged for connection. User U enters transaction password M1 in information device D, and information device D takes out the encoded value of transaction password (information device D is transactionally secret) The code is processed by the hash function operation to decrypt the M2 with the third private key K using the encoded value of the transaction password to derive the second private key M3. Next, the user U inputs biometric data (eg, fingerprint, iris or face) M4 to the information device D, and the information device D extracts the encoded value of the biometric feature (the information device D is processed by the biometric data to perform a function calculation process) And to decrypt the M5 with the second private key using the encoded value of the biometric to obtain the first private key M6. Thereby, the information device D performs the connection payment confirmation M7 with the obtained first private key (ie, the private key originally owned by the electronic wallet W).

In another embodiment of the present invention, the third private key K is stored in the blockchain, and the user connects to the blockchain through the information device D to obtain the third private key K. The user can also store the third private key K in a storage device outside the blockchain (for example, a memory module of a smart phone or a storage device such as a flash drive), and when the electronic wallet W is connected for payment, The storage device is connected to the information device D, thereby improving the security of the use of the electronic wallet.

In the private key processing method of the electronic wallet according to the embodiment of the present invention, the private key of the electronic wallet W (that is, the first private key) cooperates with the biometric data of the user U of the electronic wallet W to perform an encryption operation process to obtain a second private The key, and the transaction password set by the user U is subjected to an encryption operation process with the second private key to obtain a third private key K, so that the private key of the electronic wallet W can be subjected to multi-level encryption processing to ensure the electronic wallet W Information security. At the same time, the electronic wallet W must obtain the first private key in conjunction with the biometric data of the user U and the transaction password set by the user U to perform the connection payment confirmation, thereby ensuring that the electronic wallet W only has the user U himself. Financial security for payment is available.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those of ordinary skill in the art can make other modifications in accordance with the scope of the invention as defined below and the description above, but such modifications should still be It is within the scope of the invention to the invention of the invention.

Claims (7)

An electronic wallet private key processing method, wherein the electronic wallet is an application installed in an information device, and the private key processing method comprises the following steps: (a) an electronic wallet that is connected for payment by the information device has The private key is used as a first private key; (b) the biometric data of the user of the electronic wallet is subjected to a hash function operation to obtain an encoded value of the biometric; (c) the first private key is used with the The encoded value of the biometric of the person is subjected to an encryption operation process to obtain a second private key; (d) the transaction password set by the user is subjected to another hash function operation process to obtain the encoded value of the transaction password; and (e) Performing another encryption operation process on the second private key and the encoded value of the transaction password to obtain a third private key. When the electronic wallet is charged, the transaction code is taken out by the information device and processed by a hash function. Deriving an encoded value of the transaction password to decrypt the third private key using the encoded value of the transaction password to obtain the second private key, and then fetching the biometric device by the information device The data is subjected to a function calculation process to obtain an encoded value of the biometric, and the second private key is decrypted using the encoded value of the biometric to obtain the first private key, thereby obtaining the first A private key is confirmed by the connection payment. The private key processing method of claim 1, wherein the third private key is a 128-bit or 256-bit character string composed of English and numbers. The private key processing method of claim 1, wherein the biometric data is data obtained by the fingerprint, iris or face of the user. The private key processing method of claim 1, wherein the encoded value of the biometric and the encoded value of the transaction password are 128-bit or 256-bit character strings composed of English and numbers. The private key processing method of claim 1, wherein the encryption operation is an asymmetric encryption operation, and a public key and a private key are obtained through operation processing. The private key processing method of claim 1, wherein the third private key is stored in a blockchain. The private key processing method of claim 1, wherein the third private key is stored in a blockchain, and the information device is connected to the blockchain via a network to retrieve the third private key.