We are now a lot of chain block is to use a randomly generated data block a, then use the RIPEMD - 160 hash a twice, and then generate the hash value if the front is 00000000, becomes effective computing, also called critical piece, I want to say is, we can use 3 des algorithm, we after blasting blocks on a calculation of three additional des secret key generated by random number 112 secret key, we assume that the calculation of the cipher text in front of 8 ~ 16 0, we call it a valid tags, a 112 - bit secret-key and packet a this is one-to-one, this will increase the security of block chain, we assume that one day, the chain block be attacked, we can use 112 - bit secret key to verify the authenticity,

CodePudding user response:

The secret key can be a block of safe and secret key, assuming that one day block being attacked, this block is fake, we can use this secret key to verify the authenticity of a block,