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This module initializes the EVM software and permits to load a custom IMA policy. Signed-off-by: Roberto Sassu <roberto.sassu@polito.it> Acked-by: Gianluca Ramunno <ramunno@polito.it>
41 lines
1.5 KiB
Plaintext
41 lines
1.5 KiB
Plaintext
# Directions for creating the encrypted key that will be used to initialize
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# the EVM software.
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# Create the EVM key (encrypted key type)
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#
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# The encrypted key is a random number encrypted/decrypted using the
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# kernel master key. The encrypted key is only exposed to userspace
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# as an encrypted datablob.
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$ keyctl add encrypted evm-key "new trusted:kmk-trusted 32" @u
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782117972
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# Save the encrypted key
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$ su -c 'keyctl pipe `keyctl search @u encrypted evm_key` > /etc/keys/evm-trusted.blob'
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# The EVM key path name can be set in one of the following ways (specified in
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# the order in which the variable is overwritten):
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1) use the default value:
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--------------------------------------------------------------------------
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EVMKEY="/etc/keys/evm-trusted.blob"
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--------------------------------------------------------------------------
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2) create the configuration file '/etc/sysconfig/evm' and set the EVMKEY variable;
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3) specify the EVM key path name in the 'evmkey=' parameter of the kernel command
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line.
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# Directions for loading a custom IMA policy.
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# Write the policy following the instructions provided in the file
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# 'Documentation/ABI/testing/ima_policy' of the kernel documentation.
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# Save the policy in a file.
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# Create the configuration file '/etc/sysconfig/ima' to override the path name of
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# the IMA custom policy.
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------------- '/etc/sysconfig/ima' (with the default value) -------------
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IMAPOLICY="/etc/sysconfig/ima-policy"
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-------------------------------------------------------------------------
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