Method of creating and recovering digital wallet

1. A method of creating and recovering digital wallet, being implemented via a closed storage device and a connected device that are connected to each other, the storage device having a private key stored thereon for use to transact a digital asset, and the storage device including an information conveying unit, an operation interface, a processor and a security element; the method comprising the following steps:

a user using the connected device to generate and transmit a digital wallet creating request to the security element via the processor of the storage device;

the security element, on receipt of the creating request, checking whether there is any digital wallet existed thereon; and the security element creating a digital wallet when it verifies there is not any digital wallet existed thereon;

the processor requesting the security element to generate and transmit a recovery mnemonic to it and then showing the recovery mnemonic to the user via the information conveying unit of the storage device, and the user recording and backing up the recovery mnemonic;

the connected device receiving from the security element an encoded asset message that is stored in the digital wallet and then decoding the encoded asset message to create a piece of public digital wallet information thereon;

the connected device obtaining the recovery mnemonic according to a digital wallet recovering request, and the connected device further generating a recovery seed key according to the recovery mnemonic;

the connected device encoding the recovery seed key to form an encoded seed key and transmitting the encoded seed key to a substitute security element on a substitute storage device, and then the substitute security element decoding the encoded seed key to recover the encoded seed key to the recovery seed key; and

the substitute security element transmitting the information of the digital wallet to the connected device, so that the connected device has updated public digital wallet information created thereon.

2. The method of creating and recovering digital wallet as claimed in claim 1 , wherein the information conveying unit shows the recovery mnemonic to the user by displaying the recovery mnemonic on a surface of the storage device and the user receives, records and backs up the recovery mnemonic by sensory perception, including touching, listening to or viewing the storage device.

3. The method of creating and recovering digital wallet as claimed in claim 2 , further comprising the following steps: after recording the recovery mnemonic, the user inputting on the operation interface an instruction indicating the recovery mnemonic has been recorded, and the storage device verifying the backup of the recovery mnemonic has completed by the user.

4. The method of creating and recovering digital wallet as claimed in claim 1 , wherein the digital wallet recovering request is input by the user by operating on the connected device when the storage device was stolen, lost or damaged; and the connected device, on receipt of the digital wallet recovering request, prompts the user to input the recovery mnemonic on the connected device.

5. The method of creating and recovering digital wallet as claimed in claim 1 , wherein the connected device also generates a private key when it generates the recovery seed key, and the private key is transmitted along with the encoded seed key to the substitute security element of the substitute storage device; and wherein the substitute security element verifies the private key and the recovery seed key are correct after the encoded seed key has been recovered to the recovery seed key.

6. A method of creating and recovering digital wallet, being implemented via a closed storage device and a first connected device that are connected to each other, the storage device having a private key stored thereon for use to transact a digital asset, and the storage device including an information conveying unit, an operation interface, a processor and a security element; the method comprising the following steps:

a user using the first connected device to generate and transmit a digital wallet creating request to the security element via the processor of the storage device;

the security element, on receipt of the creating request, checking whether there is any digital wallet existed thereon; and the security element creating a digital wallet when it verifies there is not any digital wallet existed thereon;

the processor requesting the security element to generate and transmit a recovery mnemonic to it and then showing the recovery mnemonic to the user via the information conveying unit of the storage device, and the user recording and backing up the recovery mnemonic;

the first connected device receiving from the security element an encoded asset message that is stored in the digital wallet and then decoding the encoded asset message to create a piece of public digital wallet information thereon;

a second connected device obtaining the recovery mnemonic according to a digital wallet recovering request, and the second connected device further generating a recovery seed key according to the recovery mnemonic;

the second connected device encoding the recovery seed key to form an encoded seed key and transmitting the encoded seed key to the security element of the storage device or a substitute security element on a substitute storage device, and then the security element or the substitute security element decoding the encoded seed key to recover the encoded seed key to the recovery seed key; and

the security element or the substitute security element creating the digital wallet according to the recovery seed key and transmitting information of the digital wallet to the second connected device, so that the second connected device has public digital wallet information created thereon.

7. The method of creating and recovering digital wallet as claimed in claim 6 , wherein the information conveying unit shows the recovery mnemonic to the user by displaying the recovery mnemonic on a surface of the storage device, and the user receives, records and backs up the recovery mnemonic by sensory perception, including touching, listening to or viewing the storage device.

8. The method of creating and recovering digital wallet as claimed in claim 7 , further comprising the following steps: after recording the recovery mnemonic, the user inputting on the operation interface an instruction indicating the recovery mnemonic has been recorded, and the storage device verifying the backup of the recovery mnemonic has completed by the user.

9. The method of creating and recovering digital wallet as claimed in claim 6 , wherein the digital wallet recovering request is input by the user by operating on the second connected device when the first connected device and/or the storage device was stolen, lost or damaged; and the second connected device, on receipt of the digital wallet recovering request, prompts the user to input the recovery mnemonic on the second connected device.

10. The method of creating and recovering digital wallet as claimed in claim 6 , wherein the second connected device also generates a private key when it generates the recovery seed key, and the private key is transmitted along with the encoded seed key to the security element of the storage device or the substitute security element of the substitute storage device; and wherein the security element or the substitute security element verifies the private key and the recovery seed key are correct after the encoded seed key has been recovered to the recovery seed key.