Hello,

Michael Tokarev <[email protected]> writes:

> Doing a simple certreq.exe -new to generate a crq, and certtool either 
> complains
> or does not do what I think it should.  For example, this crq:
>
> PKCS #10 Certificate Request Information:
>       Version: 1
>       Subject: CN=Michael Tokarev,O=AO «CITTS»,C=RU
>       Subject Public Key Algorithm: RS
>       Algorithm Security Level: Medium (2048 bits)
>               Modulus (bits 2048):
>                       ...
>               Exponent (bits 24):
>                       01:00:01
>       Signature Algorithm: RSA-SHA256
>       Attributes:
>               Unknown attribute 1.3.6.1.4.1.311.13.2.3:
>                       ASCII: ..10.0.19044.2
>                       Hexdump: 160c31302e302e31393034342e32
>               Unknown attribute 1.3.6.1.4.1.311.21.20:
>                       ASCII: 0......MAVE.tls.msk.ru..TLS\mjt-adm..certreq.exe
>                       Hexdump: 
> 302e0201090c0f4d4156452e746c732e6d736b2e72750c0b544c535c6d6a742d61646d0c0b636572747265712e657865
>               Extensions:
>                       Key Usage (critical):
>                               Digital signature.
>                       Subject Key Identifier (not critical):
>                       029469c015457c9af37c3f71b0ba351eb44aec8a
>               Unknown attribute 1.3.6.1.4.1.311.13.2.2:
>                       ASCII: 0Z....R.M.i.c.r.o.s.o.f.t. .B.a.s.e. .S.m.a.r.t. 
> .C.a.r.d. .C.r.y.p.t.o. .P.r.o.v.i.d.e.r...
>                       Hexdump:
>                       
> 305a0201021e52004d006900630072006f0073006f006600740020004200610073006500200053006d00610072007400200043006100720064002000430072007900700074006f002000500072006f00760069006400650072030100
> Other Information:
>       Public Key ID:
>               sha1:595498a26031d1dca7a5c761ad75bb7b663282ca
>               
> sha256:c6153153234e0a490e0110df3f9d21fe3a421cfa920d9ceb32fa3ff41ddcbdb5
>       Public Key PIN:
>               pin-sha256:xhUxUyNOCkkOARDfP50h/jpCHPqSDZzrMvo/9B3cvbU=
> Self signature: verified
>
>
> Here's what's happening:
>
> certtool -V -d10 --generate-certificate --load-request mjt.crq --template 
> /dev/stdin <<- EOF
>         expiration_days = 365
>         signing_key
>         honor_crq_extensions
>         #honor_crq_ext = 2.5.29.17
>         #honor_crq_ext = 1.3.6.1
>         #.4.1.311.13.2.2
> EOF
>
> Setting log level to 10
> Generating a signed certificate...
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_strdatum_to_buf]:1543
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_strdatum_to_buf]:1543
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_copy_data]:1610
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_strdatum_to_buf]:1543
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_strdatum_to_buf]:1543
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_strdatum_to_buf]:1543
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_copy_data]:1610
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_strdatum_to_buf]:1543
> |<3>| ASSERT: ../../../lib/x509/common.c[_gnutls_strdatum_to_buf]:1543
> |<3>| ASSERT: ../../../lib/nettle/mpi.c[wrap_nettle_mpi_print]:60
> |<3>| ASSERT: ../../../lib/nettle/mpi.c[wrap_nettle_mpi_print]:60
> |<3>| ASSERT:
> | ../../../lib/x509/x509_write.c[gnutls_x509_crt_set_subject_key_id]:1609
> set_subject_key_id: The request is invalid.

Assuming this is with GnuTLS 3.7.9 (or a similar version), the last line
means that there was some failure when retrieving a subjectKeyIdentifier
extension from the certificate, where the extension exists but cannot be
retrieved for some reason.

Would it be possible to share the certificate request so I can reproduce
it locally?

> This will always be this way until I remove (comment-out) 
> honor_crq_extensions.
> But later, even when I uncomment other honor_crq_ext= (I tried random ones 
> which
> seems to be present, in this crq or in other crqs), the resulting exts are not
> shown in the generated certificate no matter how I specify them.

The usage of the honor_crq_extensions looks correct to me.

Regards,
-- 
Daiki Ueno

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