Management method and device for memorizing words

Abstract

The invention discloses a method and a device for managing memorizing words, and relates to the field of information security. The method comprises the following steps: generating a random number with a first preset length and calculating the random number; splicing the random number and data of a second preset length obtained from the random number calculation result to obtain a first spliced value; grouping the first splicing values according to a third preset length, searching a corresponding index in an offset storage area according to the value of each group in sequence, and obtaining an initial offset address and the length of the mnemonic word according to the index, according to the initial offset address of the mnemonic word and the length of the mnemonic word, obtaining the corresponding mnemonic word in the mnemonic word storage area, and sequentially storing the mnemonic word in a mnemonic word cache. Compared with the prior art, the technical scheme of the invention can greatly save the storage space, solves the problem that the space of the security chip is limited, can save more space for application, is suitable for the existing security chip, and meets the production requirements of hardware equipment.

Description

technical field [0001] The present invention relates to the field of information security, in particular to a method and device for managing mnemonic words. Background technique [0002] Some hardware devices generate mnemonic phrases during initial configuration. The mnemonic is used to generate a private key, which can be used to authorize the management of digital assets, etc. At the same time, the mnemonic is also a backup of the private key, so when the hardware device is lost or damaged, the mnemonic can be used to restore the private key. It can be seen that the security of mnemonics is closely related to the security of hardware devices. [0003] In the prior art, the mnemonic is composed of different words according to different languages, but the mnemonic of each language is composed of 2048 words; in a 32-bit chip, the usual storage method of the mnemonic is Stored in array form. For example, for 2048 English mnemonics, the address space of each mnemonic is 4 ...

AI Technical Summary

Problems solved by technology

For example, for 2048 English mnemonics, the address space of each mnemonic is 4 bytes, and the address space required for 2048 English mnemonics is: 4 bytes*2048=8K, all 2048 English mnemonics A total of letters: 11068Byte=10.81K, the space occupied by the terminator '\0' of each English mnemonic is 1 byte, and the address space required for the terminator of 2048 English mnemonics: 2048*1 byte=2K , the English mnemonic requires a total space of about 20.81K; due to the large space occupied, and the small storage space of security chips in the world, it cannot meet the production needs of hardware equipment

Images