"This memo specifies a PKCS #11 Uniform Resource Identifier (URI) Scheme for identifying PKCS #11 objects stored in PKCS #11 tokens and also for identifying PKCS #11 tokens@ slots@ or libraries. The URI scheme is based on how PKCS #11 objects@ tokens@ slots@ and libraries are identified in ""PKCS #11 v2.20: Cryptographic Token Interface Standard""."