A Attack on E-Mail Encryption Protocols by Chosen Ciphertext Method

Several security protocols (PGP, PEM, MOSS, S/MIME, PKCS#7, CMS, etc.) have been developed to provide confidentiality and authentication of electronic mail. These protocols are widely used and trusted for private communication over the Internet. The authors point out a potentially serious security hole in these protocols: any encrypted message can be decrypted using a one-message, adaptive chosen-cipher text attack. Although such attacks have been formalized mainly for theoretical interest, they argue that they are feasible in the networked systems in which these email protocols are used.

Provided by: Interscience Open Access Journals Topic: Security Date Added: Jul 2011 Format: PDF

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