--- a/cryptomgmtlibs/securitydocs/doxygen_docs/Security_intro_PKC.dox Fri Apr 16 16:52:34 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,35 +0,0 @@
-/**
-@page Security_intro_PKC Public Key Cryptography
-\n
-
-Public key (sometimes called @ref asymmetric) cryptography allows encrypted messages to be sent without the need to establish a
-shared secret key. It involves the use of two keys called a key pair: a private key and a public key. The private key is
-kept secret, and a public key is made publically available.
-
-All entities using such a system would typically possess a key pair. They will use these keys either for @ref encryption or
-@ref decryption. In any case, if one of the keys is used for @ref encryption, then only the other key can be used for @ref decryption.
-
-So, in public key cryptography, to send a message in an encrypted form to a receiver, the sender:
-@li Gets hold of the receiver's public key.
-@li Encrypts the message with the receiver's public key.
-@li Sends the encrypted message.
-
-The receiver then decrypts the message using its private key. Only the receiver, who has access to the corresponding
-private key, can decrypt it.
-
-That is the basic process used for a pure PKC system. In the real world, however, public key cryptography is typically
-used in conjunction with traditional symmetric key cryptography. This is done in order to reduce key management problems
-while at same time taking advantage of the superior speed of the latter. The method for doing this is called a digital
-envelope: a random symmetric private secret key is generated, the message is encrypted with this secret key using a
-symmetric algorithm, and then the secret key is encrypted with the receiver's public key using an @ref asymmetric algorithm.
-
-The other main use for public key cryptography is in signing (see: @ref Security_signatures).
-
-While public key cryptography ensures that only the entity with access to the corresponding key will be able to read the
-message or could have signed a given message, it gives no assurance that this entity is/are actually the entity they
-claim to be. This is where certificates come in. @ref Security_intro_certificates are needed to solve the problem of
-@ref authentication.
-
-
-
-*/
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