openssl cms resign with RSA-PSS corrupts the CMS(?)

Alon Bar-Lev alon.barlev at gmail.com
Sat Feb 13 21:23:13 UTC 2021


Hello,

I am trying to resign a CMS using the openssl tool.

When I use RSA-PKCS1 everything is working fine.

When I use RSA-PSS it seems like the asn1 is produced corrupted, I do not
see the signature in asn1dump.

I prepared a demo[1] to help people reproduce the issue, tested with
openssl-1.1.1i.

The script output pasted below shows that CMS resign without PSS works
correctly, while the same sequence with PSS produces a corrupted CMS file.

What am I doing wrong?

Regards,
Alon Bar-Lev

[1] https://github.com/alonbl/openssl-cms-pss

---

===============
CMS without PSS
===============
cms -sign 1.cms
cms -verify 1.cms
hello world
Verification successful
cms -resign 1.cms to 2.cms
cms -verify 2.cms
hello world
Verification successful
===============
CMS with PSS
===============
cms -sign 1.cms
cms -verify 1.cms
hello world
Verification successful
cms -resign 1.cms to 2.cms
cms -verify 2.cms
Error reading S/MIME message
140438977062208:error:0D078079:asn1 encoding
routines:asn1_item_embed_d2i:field
missing:../crypto/asn1/tasn_dec.c:425:Field=algorithm, Type=X509_ALGOR
140438977062208:error:0D08303A:asn1 encoding
routines:asn1_template_noexp_d2i:nested asn1
error:../crypto/asn1/tasn_dec.c:646:Field=signatureAlgorithm,
Type=CMS_SignerInfo
140438977062208:error:0D08303A:asn1 encoding
routines:asn1_template_noexp_d2i:nested asn1
error:../crypto/asn1/tasn_dec.c:614:Field=signerInfos, Type=CMS_SignedData
140438977062208:error:0D08303A:asn1 encoding
routines:asn1_template_noexp_d2i:nested asn1
error:../crypto/asn1/tasn_dec.c:646:
140438977062208:error:0D08403A:asn1 encoding
routines:asn1_template_ex_d2i:nested asn1
error:../crypto/asn1/tasn_dec.c:496:Field=d.signedData, Type=CMS_ContentInfo
FATAL: verify 2.cms failed
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