{"id":174,"date":"2021-02-10T03:35:24","date_gmt":"2021-02-10T03:35:24","guid":{"rendered":"http:\/\/learnlearn.uk\/igcsecs\/?page_id=174"},"modified":"2021-02-10T03:43:31","modified_gmt":"2021-02-10T03:43:31","slug":"symmetric-asymmetric-encryption","status":"publish","type":"page","link":"https:\/\/learnlearn.uk\/igcsecs\/symmetric-asymmetric-encryption\/","title":{"rendered":"Symmetric & Asymmetric Encryption"},"content":{"rendered":"
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Symmetric <\/h2>\n
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Symmetric Encryption<\/h3>\n

When we want to communicate securely between two devices we need a shared secret key that the two computers share.<\/p>\n

The sender encrypts the data with their copy of the key and then sends the data to the recipient, who uses the key to decrypt the data the send has sent.<\/p>\n

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Asymmetric Encryption<\/h2>\n
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Asymmetric Encryption<\/h3>\n

When we connect to websites that we haven’t been to before then we have a problem in that we don’t have a shared key in which to perform encryption\/decryption. We need a way of create a shared secret key, without sending the key to the other person in plain text, as this would leave you open to a man in the middle attack. In order to solve this problem we need to use Asymmetric encryption.<\/p>\n

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https:\/\/www.youtube.com\/watch?v=jJrICB_HvuI<\/a>