This
option specifically provides data encryption during transmission to protect data from
unauthorized viewing over Oracle Net, as well as Net/SSL, IIOP/SSL, and between
thin JDBC clients and the database. Encryption algorithms supported include RC4_
40, RC4_56, RC4_128, RC4_256, DES, DES_40, 3DES112, 3DES168, AES128,
AES192, and AES256. Communications packets are protected against data modification,
transaction replay, and removal through use of MD5 and SHA-1 algorithms.
Transparent Data Encryption (described in the next section) is included as part of
the Advanced Security Option beginning with Oracle Database 10g Release 2. Transparent
Data Encryption provides an easy way to encrypt data in the database, and
the network data encryption option of ASO protects the data during transmission to
the client.
ASO also provides support for a variety of identity authentication methods to ensure
that user identities are accurately known. Third-party authentication services supported
include Kerberos, RADIUS, and DCE. RADIUS enables support of third-party
authentication devices, including smart cards and token cards.
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