The use of internet for online transactions is increasing in these days, so there are chances to grab the private information and misused it by cyber mugger, to prevent misuse of the information, users need to do secure transactions. With the use of Digital Certificate you can secure your dealings and other happening on the web.
Digital Certificate also known as Public Key Certificate is an electronic document that uses digital Signature to bind the public key with uniqueness like Personal information, organization information and so onward. It Uses cryptography to decrypt the electronic message. Cryptography works on both public key and private key. In short, it is an encrypted file, which is used for secure transactions on the web. With the use of private key encryption user decode the electronic message. Digital Certificate is provided by the CA (certification Authority).
For example, when sending message on the web, you can digitally sign the message by attaching your digital certificate. When receiver receives the message, recipients can find out that it came from you by viewing in the message, which contains your public key information. This protects you from bluff that message looks like it came from you but is really sent from a different account.
While encrypting a message, you create like closed envelop so that only you and the recipient can see the message. Generally, when you send an email message, it is like a cover that anyone who has access on the web between you and the receiver can read that cover. With the encryption offered by the digital certificates, you can avoid this problem. In encryption, sender uses the receiver’s public key that is easy to encrypt the message; private key is used to decode the message.
A typical Digital Certificate contains:
- Name of the person
- An E mail Address
- Serial number of the Digital certificate
- Public Key
- Date of Issue of the Certificate
- Expiry Date of Certificate
- Digital Signature of the CA(certification authority)
Technology and Web security Stuffs 
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