A digital signature algorithm in information and network security based on discrete logarithm and hash functions

The digital signature technology is an important technology for identification in a virtual environment for network systems. Digital signatures can be used to verify the document's authenticity, integrity and non-repudiation of information security research. The discrete logarithm problem is the large number of cryptographic protocols based on cryptography. Hash function is frequently used in the signature scheme, in order to improve the security and speed of the signature scheme. The hash is to find the mapping between data content and data storage address. The paper puts forward the Digital Signature Algorithm in information and network security based on discrete logarithm problem and Hash functions. The comparative analysis of the results shows that the discrete logarithm and Hash functions are higher efficiency than SHA+MD5.