Symmetric key management is based on keeping secrets together. Both parties using symmetric encryption technology must ensure that they use the same key, ensure that the exchange of keys between them is safe and reliable, and set up procedures to prevent key leakage and change keys. Both parties to a transaction using a public key can use a certificate (public key certificate) to exchange the public key. X designated by ITU. 509 defines digital certificate. Digital certificate, which can identify both sides of a transaction, is one of the widely used technologies in e-commerce.
正在翻译中..