Email Security Solutions

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Email Security Solutions:

There are several protocols, services, and remedies that can be implemented to add security to an existing email infrastructure including: S/MIME, MOSS, PEM, and PGP.

Secure Multipurpose Internet Mail Extensions (S/MIME): implements e-mail authentication through X.509 digital certificates and privacy through Public Key Cryptography Standard (PKCS) encryption. Two types of messages can be created using S/MIME: signed messages and enveloped messages. A signed message offers integrity and sender authentication. An enveloped message offers integrity, sender authentication, and confidentiality. All major email vendors support S/MIME.

MIME Object Security Services (MOSS): utilized for authenticity, confidentiality, integrity, and non-repudiation for e-mail messages. It uses Message Digest 2 (MD2) and MD5 algorithms; Rivest, Shamir, and Addleman (RSA) public key; and Data Encryption Standard (DES) to support authentication and encryption services.

Privacy Enhanced Mail (PEM): an e-mail encryption mechanism that is used to allow authentication, integrity, and confidentiality. It uses RSA, DES, and X.509.

Pretty Good Privacy (PGP): an asymmetric public-private key system that uses the IDEA algorithm to encrypt, decrypt, and digitally sign files and e-mail messages. It is not standard but is widely supported on the Internet.

Benefits of PGP: 

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