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This adds initial implementation of peer authentication as part of
flow allocation. If credentials are not provided, this will be
accepted and logged as info that the flow is not authenticated.
Certificates and keys are passed as .pem files. The key file should
not be encrypted, else the IRMd will open a prompt for the password.
The default location for these .pem files is in
/etc/ouroboros/security. It is strongly recommended to make this
directory only accessible to root.
├── security
│ ├── cacert
│ │ └── ca.root.o7s.crt.pem
│ ├── client
│ │ ├── <name>
│ │ | ├── crt.pem
│ │ | └── key.pem
│ │ └── <name>
| | ├──...
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│ ├── server
│ │ ├── <name>
│ │ | ├── crt.pem
│ │ | └── key.pem
│ │ └── <name>
| | ├── ...
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│ └── untrusted
│ └── sign.root.o7s.crt.pem
Trusted root CA certificates go in the /cacert directory, untrusted
certificates for signature verification go in the /untrusted
directory. The IRMd will load these certificates at boot. The IRMd
will look for certificates in the /client and /server directories. For
each name a subdirectory can be added and the credentials in that
directory are used to sign the OAP header for flows at flow_alloc() on
the client side and flow_accept() on the server side.
These defaults can be changed at build time using the following
variables (in alphabetical order):
OUROBOROS_CA_CRT_DIR /etc/ouroboros/security/cacert
OUROBOROS_CLI_CRT_DIR /etc/ouroboros/security/client
OUROBOROS_SECURITY_DIR /etc/ouroboros/security
OUROBOROS_SRV_CRT_DIR /etc/ouroboros/security/server
OUROBOROS_UNTRUSTED_DIR /etc/ouroboros/security/untrusted
The directories for the names can also be configured at IRMd boot
using the configuraton file and at runtime when a name is created
using the "irm name create" CLI tool. The user needs to have
permissions to access the keyfile and certificate when specifying the
paths with the "irm name create" CLI tool.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
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This adds the initial version for the flow allocation protocol header
between IRMd instances. This is a step towards flow authentication.
The header supports secure and authenticated flow allocation,
supporting certificate-based authentication and ephemeral key
exchange for end-to-end encryption.
id: 128-bit identifier for the entity.
timestamp: 64-bit timestamp (replay protection).
certificate: Certificate for authentication.
public key: ECDHE public key for key exchange.
data: Application data.
signature: Signature for integrity/authenticity.
Authentication and encryption require OpenSSL to be installed.
The IRMd compares the allocation request delay with the MPL of the
Layer over which the flow allocation was sent. MPL is now reported by
the Layer in ms instead of seconds.
Time functions revised for consistency and adds some tests.
The TPM can now print thread running times in Debug builds
(TPM_DEBUG_REPORT_INTERVAL) and abort processes with hung threads
(TPM_DEBUG_ABORT_TIMEOUT). Long running threads waiting for input
should call tpm_wait_work() to avoid trigger a process abort.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Adds functions needed for authentication using X509 certificates,
implemented using OpenSSL.
Refactors some library internals, and adds some unit tests for them.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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