Single-name SSL Certificates provide encryption and authentication for one domain.
DigiCert SSL Certificates have all the features you expect from an SSL Certificate (like strong encryption and browser trust) as well as a few things you won't get anywhere else—like unlimited reissues and an unlimited server license.
And because of DigiCert's innovative use of Subject Alternative Names, a certificate for www.yoursite.com will also work with yoursite.com. That's why we call it SSL Plus.
Strongest Encryption
DigiCert converts your data into impenetrable code using data encryption up to 256 bits and the SHA-2 algorithm. DigiCert upholds the highest standard for key sizes and a hybrid cryptosystem that utilizes the best of both asymmetric and symmetric encryption. Your website security is our number one priority.
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