About Secure Hash Algorithm One

  SHA, which represents Secure Hash Algorithm, is a mathematical algorithm. It can create an unique ID for the content. It means that if the contents are the same, the IDs must be the same. If the contents are not the same, even just one character is different, the IDs can never be the same. This algorithm seems to extract the content like cheese, and then create an unique ID like product marking.   

  As a result, Secure Hash Algorithm can be used to compare different contents. It is widely used for digital signatures. The original contents will be converted to IDs. Finally, people or machines compare the IDs. If the IDs are the same, it means that the original contents are the same. Alternatively, the digital signatures come from the same person. Otherwise, the contents have been modified, or the digital signatures are forged.

  At present, the Secure Hash Algorithm has many levels. The Secure Hash Algorithm One is an secure and basic level. In fact, the Secure Hash Algorithm 512 is the highest level at present, and is the securest level. However, Secure Hash Algorithm 512 requires more computation. Therefore, the Secure Hash Algorithm One is still widely used on the Internet. You can see that the Web address of http becomes https, when you sign in your online bank, or pay online. 

  CE Password™ uses Secure Hash Algorithm One. However, before creating the ID, it adds an random code for the password. Then, it creates the ID for the new password. As a result, the ID cannot be repeated. Therefore, the security is improved greatly.