Method, apparatus, and storage medium for data verification

A data verification apparatus comprising:

• at least one memory operable to store program code;
• and
• at least one processor operable to access said at least one memory, read said program code, and operate according to said program code, said program code comprising:
• first receiving code configured to cause the at least one processor to receive, from a second device, fingerprint information of N (N being an integer greater than 1) slices of to-be-sent data of the second device, the fingerprint information comprising first fingerprint information corresponding to an ith (i being an integer greater than 1) slice of the to-be-sent data and second fingerprint information corresponding to an (i−1)th slice of the to-be-sent data, the first fingerprint information being based on updating, by using the ith slice of the to-be-sent data, the second fingerprint information;
• second receiving code configured to cause the at least one processor to receive an ith slice of data from the second device;
• updating code configured to cause the at least one processor to update, by using the ith slice of data, the received second fingerprint information, to obtain third fingerprint information;
• and
• first transmitting code configured to cause the at least one processor to transmit data verification failure indication information to the second device in response to the third fingerprint information not matching the received first fingerprint information.

A non-transitory computer readable storage medium storing instructions, which, when executed by one or more processors, cause the one or more processors to perform:

• receiving, from a second device, fingerprint information of N (N being an integer greater than 1) slices of to-be-sent data of the second device, the fingerprint information comprising first fingerprint information corresponding to an ith (i being an integer greater than 1) slice of the to-be-sent data and second fingerprint information corresponding to an (i−1)th slice of the to-be-sent data, the first fingerprint information being based on updating, by using the ith slice of the to-be-sent data, the second fingerprint information;
• receiving an ith slice of data from the second device;
• updating, by using the ith slice of data, the received second fingerprint information, to obtain third fingerprint information;
• and
• transmitting data verification failure indication information to the second device in response to the third fingerprint information not matching the received first fingerprint information.