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Answer Posted / harry
Cognos 8 components require a cryptographic provider;
otherwise they will not run. If you delete the default
cryptographic provider, you must configure another provider
to replace it.
You can configure cryptographic provider settings,
including the following:
advanced algorithms
These include signing and digest algorithms.
common symmetric key store (CSK) properties
The CSK is used by Cognos 8 to encrypt and decrypt data.
signing key store properties
The signing key pair includes the private key used to
generate the digital signature and the public key used to
verify authenticity.
encryption key store properties
The encryption key pair includes the private key used to
encrypt data and the public key used to decrypt data.
The default cryptographic provider uses keys up to 56 bits
in length for data encryption and secure sockets layer
(SSL) protocol. You can configure other cryptographic
providers which use key sizes greater than 56 bits, such as
the Enhanced Encryption Module for OpenSSL or the Enhanced
Encryption Module for Entrust, available from Cognos. For
more information, see the Enhanced Encryption Module for
OpenSSL Installation and Configuration Guide or the
Enhanced Encryption Module for Entrust Installation and
Configuration Guide.
Important: In a distributed installation, Cognos computers
communicate with Content Manager to establish trust and
obtain some cryptographic keys from Content Manager. If you
change the cryptographic keys in Content Manager, such as
by changing application servers or reinstalling Content
Manager, you must delete the cryptographic keys on the
other Cognos computers. You must then save the
configuration on each computer so that they obtain the new
cryptographic keys from Content Manager. In addition, all
Cognos 8 components in a distributed installation must be
configured with the same cryptographic provider settings.
Also, in a distributed environment, the symmetric key
should only be stored on computers where Content Manager
has been installed.
Steps for Cryptographic Settings
Start Cognos Configuration.
In the Explorer window, under Security, click Cryptography.
In the Properties window, change the default values by
clicking the Value box and then selecting the appropriate
value:
On computers that do not contain Content Manager, if you do
not want to store the CSKs locally, under CSK settings,
change Store symmetric key locally to False.
When Store symmetric key locally is False, the key is
retrieved from Content Manager when required. The Common
symmetric key store location property is ignored.
If you want the computers at both ends of a transmission to
prove their identity, under SSL Settings, change Use mutual
authentication to True.
We recommend that you do not change the Use confidentiality
setting.
If you want to change the digest algorithm, for the Digest
algorithm property, select another value.
From the File menu, click Save.
Test the cryptographic provider on a gateway computer only.
In the Explorer window, right-click Cryptography and click
Test.
Cognos 8 components check the availability of the symmetric
key.
After you configure the cryptographic provider, passwords
in your configuration and any data you create are encrypted.
Steps for Cryptographic Provider
Start Cognos Configuration.
In the Explorer window, under Security, Cryptography, click
Cognos.
If you want to change the location of the signing keys,
under Signing key settings, change the Signing key store
location property to the new location.
If you want to change the location of the encryption keys,
under Encryption key settings, change Encryption key store
location to the new location.
If you want to use a third-party certificate authority,
under Certificate Authority settings, change Use third
party CA to True.
You must also ensure that you use the same values for the -
k parameter as you used for the Signing key store location
and Encryption key store location properties.
For more information, see Configuring Cognos 8 Components
to Use a Third-party Certificate Authority.
Important: The Confidentiality algorithm value determines
how data is encrypted by Cognos 8 components. For example,
database passwords entered in Cognos Configuration are
encrypted when you save the configuration. The algorithm
selected when the data is encrypted must also be available
for the data to be decrypted at a later date.
The availability of confidentiality algorithms can change
if there are changes to your environment. For example, if
your Java Runtime Environment (JRE) has changed or if you
have installed third-party cryptographic software on the
computer. If you have made changes to a computer, such as
upgraded the JRE or installed software that has upgraded
the JRE, this may affect the availability of
confidentiality algorithms. You must ensure that the
Confidentiality algorithm that was selected when the data
was encrypted is also available when you want to access the
data.
From the File menu, click Save.
If you use a third-party Certificate Authority (CA) server,
you must now configure Cognos 8 components to use the CA.
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