Harga,pembentukan harga dan keseimbangan pasar

is an exchange value that can be equated with money or other goods for the benefits obtained from an item or service for a person or group at a certain time and place, a price is used to provide financial value on a product of goods or services, in economics price can be associated with the selling / buying value of a product or service as well as a variable that determines the comparison of products or similar goods. price formation process that is the existence of a bargaining process between sellers and buyers in a market if a certain price the number of requests and the number of supply of goods is the same because market prices are also called equilibrium prices, market equilibrium is a condition in which the quantity of goods demanded is equal to the amount of goods offered at a certain price level. Market market balance can also be understood as a condition where the price of the product being offered is equal to the price the product requested by the cons umen, when the market balance point is reached there is no tendency for price changes or prices to be fixed, this price is called the equilibrium price

Block-hash of blockchain framework against man-in-the-middle attacks

Payload authentication is vulnerable to Man-in-the-middle (MITM) attack. Blockchain technology offers methods such as peer to peer, block hash, and proof-of-work to secure the payload of authentication process. The implementation uses block hash and proof-of-work methods on blockchain technology and testing is using White-box-testing and security tests distributed to system security practitioners who are competent in MITM attacks. The analyisis results before implementing Blockchain technology show that the authentication payload is still in plain text, so the data confidentiality has not minimize passive voice. After implementing Blockchain technology to the system, white-box testing using the Wireshark gives the result that the authentication payload sent has been well encrypted and safe enough. The percentage of security test results gets 95% which shows that securing the system from MITM attacks is relatively high. Although it has succeeded in securing the system from MITM attacks, it still has a vulnerability from other cyber attacks, so implementation of the Blockchain needs security improvisation