Description of problem:
I have generated a SoftHSM2 backed key called ecc on token DNS.
However, I cannot access the token unless I provide pin-value. I want to use pin-source.

One problem is it does not properly parse PKCS#11 URI. Moreover, it does crash when it fails.

Version-Release number of selected component (if applicable):
rpm -q openssl-pkcs11 softhsm openssl
openssl-pkcs11-0.4.8-2.fc29.x86_64
openssl-pkcs11-0.4.8-2.fc29.i686
softhsm-2.5.0-2.fc29.x86_64
openssl-1.1.1a-1.fc29.x86_64


How reproducible:
always

Steps to Reproduce:
1. p11tool --list-all 'pkcs11:token=DNS;object=ecc?pin-source=/etc/named/pkcs11-pin'

2. openssl dgst -hex -engine pkcs11 -keyform engine -sign 'pkcs11:token=DNS;object=ecc?pin-source=/etc/named/pkcs11-pin' /etc/redhat-release
3. 

Actual results:
# p11tool
Object 0:
	URL: pkcs11:model=SoftHSM%20v2;manufacturer=SoftHSM%20project;serial=0e7082540070b451;token=DNS;object=ecc;type=public
	Type: Public key (EC/ECDSA-SECP384R1)
	Label: ecc
	Flags: CKA_WRAP/UNWRAP; 
	ID: 

# openssl dgst -hex -engine pkcs11 -keyform engine -sign 'pkcs11:token=DNS;object=ecc?pin-source=/etc/named/pkcs11-pin' /etc/redhat-release
engine "pkcs11" set.
The key ID is not a valid PKCS#11 URI
The PKCS#11 URI format is defined by RFC7512
The key ID is not a valid PKCS#11 URI
The PKCS#11 URI format is defined by RFC7512
PKCS11_get_private_key returned NULL
cannot load key file from engine
140412282758976:error:80065064:pkcs11 engine:ctx_load_key:invalid id:eng_back.c:636:
140412282758976:error:26096080:engine routines:ENGINE_load_private_key:failed loading private key:crypto/engine/eng_pkey.c:78:
unable to load key file
Neoprávněný přístup do paměti (SIGSEGV) (core dumped [obraz paměti uložen])


Expected results:
# Same output as command
# openssl dgst -hex -engine pkcs11 -keyform engine -sign "pkcs11:token=DNS;object=ecc?pin-value=$(cat /etc/named/pkcs11-pin)" /etc/redhat-release
engine "pkcs11" set.
EC-SHA256(/etc/redhat-release)= 3065023079d08cc0918a977d7e9172fc7840616295a47ee5a5639f2acd784c6db725b5d81a40fae548e1875a9c503a683532d284023100bbddaec466be3eff9bde7504195429e1f0275b8b96d47001e04b3f7fbd3b33b0b3266cd3004f5041ebdc83354a3167ef

Additional info:
It seems this is related to long closed issue [1]. It was not fixed as well as it should. Another issue is SoftHSM does not accept pin-value, so they are now mutually incompatible.

I would like eventually remove support of native PKCS#11 from named-pkcs11 special build and handle all tokens from OpenSSL. But this issue prevents reusing of keys created by dnssec-keyfromlabel. This tool stores used pkcs11 URI into private key. In order to use such keys, OpenSSL has to accept the same parameters. PIN from file might be security issue, but it would be stored in each private key in the other case.

Moreover it crashes.

1. https://github.com/OpenSC/engine_pkcs11/issues/28