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Email encryption is encryption of email messages to protect the content from being read by other entities than the intended recipients. Email encryption may also include authentication. Email is prone to disclosure of information. Most emails are currently transmitted in the clear (not encrypted). By means of some available tools, persons other than the designated recipients can read the email contents.〔(SMEmail – A New Protocol for the Secure E-mail in Mobile Environments ), Proceedings of the Australian Telecommunications Networks and Applications Conference (ATNAC'08), pp. 39–44, Adelaide, Australia, Dec. 2008.〕 Email encryption has been used by journalists and regular users to protect privacy. Email encryption can rely on public-key cryptography, in which users can each publish a public key that others can use to encrypt messages to them, while keeping secret a private key they can use to decrypt such messages or to digitally encrypt and sign messages they send. ==Encryption protocols== Protocols for email encryption include: *Bitmessage *OpenPGP *S/MIME *TLS 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Email encryption」の詳細全文を読む スポンサード リンク
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