How-To Geek


Ciphertext is a term used in cryptography and computer security to refer to text which has been run through an encryption algorithm (the cipher which converted the text from plain, human readable text, to encrypted text). If you send an encrypted email using a public key system, for example, part of the email is plaintext and part of the email is cipher text. The header of the email and the information on how to retrieve the public key will be in plaintext and the encrypted portion of the email intended only for the recipient will be in ciphertext.

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