E-commerce is doing buisness over the internet. It includes online banking, trading stocks, and buying goods and services. It has become a need in modern life. Millions of people are now shopping regulary from the comfort of their homes. You can sereiously buy anything online. You never have to leave home.
- Privecy: information must be kept from unauthorized personal.
- Integrity: message must not be altered or tampered with.
- Authentication: sender and recipient must prove their identities to each other.
- Non-repudiation: proof is needed that the message was indeed received.
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