Bug #3438: Invalid default certificate created for existing default key of an identity - ndn-cxx - NDN project issue tracking system

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Bug #3438

closed

Invalid default certificate created for existing default key of an identity

Added by Alex Afanasyev about 8 years ago. Updated almost 8 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Category:

Security

Target version:

v0.5

Start date:

01/29/2016

Due date:

% Done:

100%

Estimated time:

Description

When an identity has a default key, but no associated certificate, signing with the identity will result in generating another key and self-signed certificate. Instead, a self-signed certificate should be created in this case.

To reproduce issue (http://gerrit.named-data.net/#/c/2692/1/tests/unit-tests/security/key-chain.t.cpp@422),

KeyChain keyChain;
Name ecdsaIdentity = Name("/ndn/test/ecdsa").appendVersion();
Name ecdsaKeyName = keyChain.generateEcdsaKeyPairAsDefault(ecdsaIdentity, false, 256);
BOOST_CHECK_NO_THROW(keyChain.sign(data, signingByIdentity(ecdsaIdentity)));
BOOST_CHECK_EQUAL(data.getSignature().getType(),
                  KeyChain::getSignatureType(EcdsaKeyParams().getKeyType(), DIGEST_ALGORITHM_SHA256));
BOOST_CHECK(ecdsaIdentity.isPrefixOf(data.getSignature().getKeyLocator().getName()));

if no certificate is available for the default key and its type does not corresponds to the DEFAULT_KEY_PARAMS a new pair of DEFAULT_KEY_PARAMS keys is created, set as default and used for
signing. Solved by checking the type of key of the default key pair for the identity.

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Updated by Alex Afanasyev about 8 years ago

Status changed from New to Code review

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Updated by Junxiao Shi about 8 years ago

I'm able to reproduce this issue on command line.

ndnsec-keygen -tr /X > X.req creates a certificate request
ndnsec-keygen -te /Y > /dev/null creates an ECDSA key and sets it as default, but there's no certificate
ndnsec-certgen -N 'XX' -r X.req > /dev/null signs X.req with default identity /Y
ndnsec-list -C shows /Y has two keys now, and the new key has a self-signed RSA certificate

But this issue occurs only when I specify ECDSA key in step2. This is probably due to the default being RSA.

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Updated by José Quevedo about 8 years ago

The issue with ndnsec-certgen is similar to the one found in KeyChain:

In the absence of a certificate KeyChain::createIdentity is called, specifying only the identityName, thus assuming params as DEFAULT_KEY_PARAMS.
In KeyChain::createIdentity, since the type of the default key for the identity does not match the type in DEFAULT_KEY_PARAMS (RSA), a new ksk key is created using DEFAULT_KEY_PARAMS and set as default for the identity.

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