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---Problem Description---
opencryptoki C_GenerateKeyPair() fails after generating > 500 RSA keys with
CEX7 crypto cards
Running a program that generates RSA keys and tests
encyrption/decryption on Crypto cards, is failing after about 500
iterations. The program makes the following opencryptoki calls in a
loop:
C_GenerateKeyPair()
C_EncryptInit()
C_Encrypt()
C_DecryptInit()
C_Decrypt()
C_SignInit()
C_Sign() (RSA Sign)
C_VerifyInit()
C_Verify() (RSA Verify)
C_SignInit()
C_SignUpdate() (RSA Multipart sign)
C_VerifyInit()
C_VerifyUpdate() (RSA multi-part verify)
C_VerifyFinal()
C_DestroyObject() (Destroy RSA public key)
C_DestroyObject() (Destroy RSA private key)
When running single-threaded, it fails consistently on loop 504. When
running multi-threaded it fails on about the 506th iteration across all
threads (ie with 5 threads, each thread fails after about 100 loops).
On the 504th loop, the C_GenerateKeyPair() call fails with return code
6. Looking at the /var/log/opencryptoki/trace.* logfile, I found these
error messages which seem to correspond to the failure:
```
09/06/2022 15:37:09 6099 [usr/lib/api/api_interface.c:1106 api] DEVEL:
fcn->ST_DestroyObject returned:0x0
09/06/2022 15:37:09 6099 [usr/lib/api/api_interface.c:1996 api] INFO:
C_GenerateKeyPair
09/06/2022 15:37:09 6099 [usr/lib/api/api_interface.c:2019 api] INFO: Valid
Session handle id: 2
09/06/2022 15:37:09 6099 [usr/lib/ep11_stdll/ep11_specific.c:5977 ep11tok]
INFO: rsa_ec_generate_keypair m_GenerateKeyPair rc=0x0 spki_len=0x1a6
privkey_blob_len=0x970 mech='CKM_RSA_PKCS_KEY_PAIR_GEN'
09/06/2022 15:37:09 6099 [usr/lib/ep11_stdll/ep11_specific.c:6612 ep11tok]
INFO: ep11tok_generate_key_pair rc=0x0 hpubkey=0x1 hprivkey=0x2 pub_name=''
priv_name='' pub_obj=0x3ff7001d210 priv_obj=0x3ff70068460
09/06/2022 15:37:09 6099 [usr/lib/common/loadsave.c:149 ep11tok] DEVEL: Unable
to set permissions on file.
09/06/2022 15:37:09 6099 [usr/lib/common/loadsave.c:149 ep11tok] DEVEL: Unable
to set permissions on file.
09/06/2022 15:37:09 6099 [usr/lib/common/loadsave.c:149 ep11tok] DEVEL: Unable
to set permissions on file.
09/06/2022 15:37:09 6099 [usr/lib/common/obj_mgr.c:613 ep11tok] DEVEL: Object
created: handle: 2
09/06/2022 15:37:09 6099 [usr/lib/common/loadsave.c:2409 ep11tok] ERROR:
fopen(/var/lib/opencryptoki/ep11tok/TOK_OBJ/OBxIH3zb): Too many open files
09/06/2022 15:37:09 6099 [usr/lib/ep11_stdll/ep11_specific.c:6749 ep11tok]
DEVEL: ep11tok_generate_key_pair Object mgr create final failed
09/06/2022 15:37:09 6099 [usr/lib/common/obj_mgr.c:991 ep11tok] DEVEL: Object
found: handle: 2
09/06/2022 15:37:09 6099 [usr/lib/common/loadsave.c:224 ep11tok] ERROR: fopen
failed
09/06/2022 15:37:09 6099 [usr/lib/ep11_stdll/new_host.c:3837 ep11tok] DEVEL:
ep11tok_generate_key_pair() failed.
09/06/2022 15:37:09 6099 [usr/lib/ep11_stdll/new_host.c:3840 ep11tok] INFO:
C_GenerateKeyPair: rc = 0x00000006, sess = 2, mech = 0x0
09/06/2022 15:37:09 6099 [usr/lib/api/api_interface.c:2041 api] DEVEL:
fcn->ST_GenerateKeyPair returned:0x6
09/06/2022 15:37:09 6099 [usr/lib/api/api_interface.c:1653 api] INFO: C_Finalize
```
I tested it on both z15 and z16 (with different crypto cards) and got
the same failure. In all cases, I am running on a KVM guest and using
CEX7 crypto cards. I have not tested yet on CEX8 crypto cards.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Skipper Bug Screeners (skipper-screen-team)
Status: New
** Tags: architecture-s39064 bugnameltc-199964 severity-high
targetmilestone-inin---
--
[UBUNTU 22.10] opencryptoki C_GenerateKeyPair() fails after generating > 500
RSA keys with CEX7 and CEX8 crypto cards
https://bugs.launchpad.net/bugs/1989558
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