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nts: don't connect to server if missing AES-SIV-CMAC-256

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Avoid wasting server resources if the client doesn't support
AES-SIV-CMAC-256 (the only algorithm required on servers).
This commit is contained in:
Miroslav Lichvar
2022-10-11 10:35:19 +02:00
parent 9afd19c29b
commit 4baf999cc3
1 changed files with 7 additions and 0 deletions
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7
nts_ke_client.c
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@@ -370,6 +370,13 @@ NKC_Start(NKC_Instance inst)
return 0; return 0;
} }
/* Don't try to connect if missing the algorithm which all servers
are required to support */
if (SIV_GetKeyLength(AEAD_AES_SIV_CMAC_256) <= 0) {
LOG(LOGS_ERR, "Missing AES-SIV-CMAC-256");
return 0;
}
/* Follow the bindacqaddress and bindacqdevice settings */ /* Follow the bindacqaddress and bindacqdevice settings */
CNF_GetBindAcquisitionAddress(inst->address.ip_addr.family, &local_addr.ip_addr); CNF_GetBindAcquisitionAddress(inst->address.ip_addr.family, &local_addr.ip_addr);
local_addr.port = 0; local_addr.port = 0;