Historically, companies that use computerized systems have made business transactions using Vans (Value Added Network). Vans produced from the merger of several technologies, including transfers of data per packet, the fixed communication connections, a link is a dial-up and the main terminal emulation, to provide data communications services, security, auditing, and repair the lost packet. Vans can also be expensive in a hurry, if the data exchanged large, this is caused by a mechanism that sets Vans financing based on the number of transactions or number of characters that is sent, but the internet does not charge transaction fees. Business partners can communicate more efficiently through the use of the Internet. Even so, electronic commerce through channels accessible by the public such as the Internet, can cause problems. Threats to electronic business transactions which should be noted :
- Financial losses due to fraud – the conversion of the data on the network can be made by the parties meant no harm, either from within or from outside the company, such as a can make the wrong transfer from one account to another or change the amount of money transferred.
- Theft of valuable information confidential – business secret of a particular technology, marketing innovation critically affect the success of a business organization, or enterprise customer personal data, information, if obtained and used by the authorities not to cause serious damage
- The denial of an electronic transaction – which sends tpihak non-paper transactions someday might be claimed that he never took out the transaction in question or debate the actual content of the transaction documents.
- problems left by the trade electronically only be overcome by using appropriate security protection. Solutions technical issues regarding the security of information found on the field of cryptography, which has been studied for years by the research conducted by the academic and military. Cryptography provides encryption and mechanism of digital signatures to guarantee the confidentiality of electronic data, the authenticity of kepemillikan rights, protection of integrity, and the absence of the denial of an electronic document that has been made.
Four (4) main aspects of secure communication:
- Confidentiality of data (privacy) – an electronic transaction is encrypted by using sophisticated cryptographic systems, so that the parties are not authorized can not be opened and read the contents of the transaction
- Integrity of data – those who do not have rights to the data, can not alter or destroy data without being detected
- Data origin authentication – the recipient know the identity of the sender; data origin authentication and integrity services can be provided through the use of digital signatures or message authentication code (Macs)
- There is no denial of the documents that have been made – the sender in the future can not deny the ownership of a transaction, if the transaction is sent with digital signature.
