/var/lib/nssdb/pkcs11.txt is in libnss3-nssdb 2:3.28.4-0ubuntu0.14.04.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | library=libnsssysinit.so
name=NSS Internal PKCS #11 Module
parameters=configdir='sql:/var/lib/nssdb' certPrefix='' keyPrefix='' secmod='secmod.db' flags= updatedir='' updateCertPrefix='' updateKeyPrefix='' updateid='' updateTokenDescription=''
NSS=Flags=internal,moduleDBOnly,critical trustOrder=75 cipherOrder=100 slotParams=(1={slotFlags=[RSA,DSA,DH,RC2,RC4,DES,RANDOM,SHA1,MD5,MD2,SSL,TLS,AES,Camellia,SEED,SHA256,SHA512] askpw=any timeout=30})
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