Hash function is used to map data in blocks. The values returned by hash function are called hash values, hash codes, etc. Block chain is a growing list of records called blocks which are linked using cryptography. Each block contains a cryptographic hash of the previous blocks and also transaction data. This technology can be implemented anywhere in health care, medicine, insurance, etc Here we are implementing this technology in our daily life activity which is in social now for high-security transaction of post between users
In this project, we are going to compare MD5 Hash and ShA256 hash for transaction and we are going to find the performance of these two hash function. Here in this application, we are going to generate two encoding cryptographic key for viewing the private post and public post. The key is generated by using the rijndel cryptographic algorithm. Then the user post undergoes hash encryption using md5 and sha256 hashing functions. So in this project, we going to see the about blockchain which is a linked list of transaction which contains data and hash pointer to the previous block in the block chain
