Method and device for compatible management of encryption algorithm

Abstract

The invention relates to a computer electronic account managing technology and discloses a method and a device for compatible management of an encryption algorithm. The method comprises the following steps of: setting AID menus of different encryption algorithms in a PSAM (Purchase Secure Access Module) card and a user card; saving application data needed by an executing payment flow into each AID menu, so that no matter which encryption algorithm is supported by the user card, the PSAM card can be matched and the corresponding encryption algorithm is called to finish the payment flow; the different AID menus can be conveniently utilized and the compatible management of the different encryption algorithms under the same application flow is realized; on the premise that the payment flow is not changed, any other instruction is not added and terminal equipment is not modified, the user card and the PASM card can be guaranteed to be smoothly transited to a standard encryption algorithm formulated by National Password Bureau through a DES (Data Encryption Standard) algorithm; and the working performance of a payment system is guaranteed and the cost is minimized.

Description

technical field [0001] The invention relates to electronic account management technology, in particular to a method and device for compatible management of encryption algorithms. Background technique [0002] At present, domestic electronic account carriers (such as IC cards and SIM cards) basically use the DES (Data Encryption Standard) algorithm as the encryption algorithm. Among them, the so-called electronic account refers to EDEP (Electronic Purse Electronic Deposit) , e-wallet, e-passbook) and other virtual currency application methods. [0003] Taking the IC card as an example, the specific application process of the electronic account carrier is as follows: figure 1 As shown, among them, after selecting different transaction types, different transaction operations will be carried out, such as: transfer, consumption, transfer, etc., these operations all involve electronic account carriers, sales terminals and sales terminals internal PSAM (Purchase Secure Access Mod...

AI Technical Summary

Problems solved by technology

Correspondingly, electronic account carriers and sales terminals that can apply the national standard encryption algorithm will gradually appear in the market. However, electronic account carriers and sales terminals that can only use the DES algorithm will not withdraw from the market immediately, so the DES algorithm will appear Scenarios that are applied simultaneously with the new national standard encryption algorithm

[0006] In this case, once the encryption algorithm used by the electronic account carrier is inconsistent with the encryption algorithm used by the sales terminal, there will be incompatibility, which will seriously affect the normal use of the electronic wallet

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