Research and Application of the Realization of Digital Signature by RSA Algorithm
Duan Hai-long · Microcomputer applications · 2008
In the application of the digital signature, in order to accelerate the signing speed, calculate a digital abstract with fixed length by HASH algorithm at first, and then, encrypt the digital abstract by HASH algorithm to generate digital signature. Send the file with the signature to the receiver. The receiver then decrypts the digital signature by using the public key to generate digital abstract 1, and decrypts the received file by using the public key to generate digital abstract 2. Compare two digital abstracts, if they are the same, it proves that the file is not changed.