Re: [openssl-users] Certificate validating (openssl -verify ...) and interpreting messages

[Jakob Bohm]

On 18/05/2016 21:38, Walter H. wrote:

On 18.05.2016 21:10, Viktor Dukhovni wrote:
On May 18, 2016, at 1:26 PM, Walter H.  
wrote:


openssl verify -CAfile /etc/pki/tls/certs/ca-bundle.trust.crt 
-trusted_first -untrusted /tmp/chain.pem /tmp/cert.pem


/tmp/chain.pem contains a root certificate
/tmp/cert.pem contains a certificate that was signed by this root 
certificate;


I get the following output

/tmp/cert.pem: CN = ..., O = ..., ST = ..., C = ...
error 19 at 1 depth lookup:self signed certificate in certificate chain

of couse the number 19 means 'self signed certificate in certificate 
chain'

as shown here: https://www.openssl.org/docs/manmaster/apps/verify.html

but what does the number 1 (at ... depth) say?

It means that while constructing a chain, the immediate issue of the
leaf certificate was an untrusted self-signed certificate.  The leaf
certificate has depth 1, its issuer has depth 0.


Ah, ok; in case there had been a chain with 3 certificates
2 means the leaf certificate, 1 means the issuing intermediate and 0 
means the self signed root?

No,

0 is always the leaf,
1 is always the issuer of the leaf
2 is always the issuer of the issuer of the leaf
etc.

So for a chain with 3 certificates, 2 is the root.

Enjoy

Jakob
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Re: [openssl-users] Certificate validating (openssl -verify ...) and interpreting messages

[Walter H.]

On 18.05.2016 21:10, Viktor Dukhovni wrote:

On May 18, 2016, at 1:26 PM, Walter H.  wrote:

openssl verify -CAfile /etc/pki/tls/certs/ca-bundle.trust.crt -trusted_first 
-untrusted /tmp/chain.pem /tmp/cert.pem

/tmp/chain.pem contains a root certificate
/tmp/cert.pem contains a certificate that was signed by this root certificate;

I get the following output

/tmp/cert.pem: CN = ..., O = ..., ST = ..., C = ...
error 19 at 1 depth lookup:self signed certificate in certificate chain

of couse the number 19 means 'self signed certificate in certificate chain'
as shown here: https://www.openssl.org/docs/manmaster/apps/verify.html

but what does the number 1 (at ... depth) say?

It means that while constructing a chain, the immediate issue of the
leaf certificate was an untrusted self-signed certificate.  The leaf
certificate has depth 1, its issuer has depth 0.


Ah, ok; in case there had been a chain with 3 certificates
2 means the leaf certificate, 1 means the issuing intermediate and 0 
means the self signed root?


Thanks,
Walter




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Re: [openssl-users] Certificate validating (openssl -verify ...) and interpreting messages

[Viktor Dukhovni]

> On May 18, 2016, at 1:26 PM, Walter H.  wrote:
> 
> openssl verify -CAfile /etc/pki/tls/certs/ca-bundle.trust.crt -trusted_first 
> -untrusted /tmp/chain.pem /tmp/cert.pem
> 
> /tmp/chain.pem contains a root certificate
> /tmp/cert.pem contains a certificate that was signed by this root certificate;
> 
> I get the following output
> 
> /tmp/cert.pem: CN = ..., O = ..., ST = ..., C = ...
> error 19 at 1 depth lookup:self signed certificate in certificate chain
> 
> of couse the number 19 means 'self signed certificate in certificate chain'
> as shown here: https://www.openssl.org/docs/manmaster/apps/verify.html
> 
> but what does the number 1 (at ... depth) say?

It means that while constructing a chain, the immediate issue of the
leaf certificate was an untrusted self-signed certificate.  The leaf
certificate has depth 1, its issuer has depth 0.

-- 
Viktor.

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