# US 11,451,373 B2 · Dynamic management of user identifications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,373 B2 - Document ID: US11451373B2 - Status: Granted - Kind: B2 - Application number: 16/837,104 - Filed: 2020-04-01 - Published: 2021-10-07 - Granted: 2022-09-20 - Earliest claimed: 2020-04-01 - Assignees: International Business Machines Corporation - Applicants: International Business Machines Corporation - Inventors: James Arthur Lindeman; Danny Soroker; Lisa Frankel - Web page: https://patentgrep.com/patent/US11451373B2 ## CPC - H04L 9/0637: {Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]} - H04L 9/3239: {involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD} - H04L 9/0643: {Hash functions, e.g. MD5, SHA, HMAC or f9 MAC} - H04L 9/3236: {using cryptographic hash functions} - H04L 9/3247: {involving digital signatures} - H04L 9/3297: {involving time stamps, e.g. generation of time stamps} - H04L 9/3265: {using certificate chains, trees or paths; Hierarchical trust model} - H04L 9/50: {using hash chains, e.g. blockchains or hash trees} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract An example operation may include one or more of authenticating a user, by a first system node, based on a first set of user credentials, computing, by the first system node, a second set of user credentials for a second system node, testing the second system node, by the first system node, to determine if the second system node has a user with the second set of the user credentials, and responsive to the second system node not having the user with the second set of the user credentials, creating a user with the second set of the user credentials. ## Claims ### Claim 1 A system node in a blockchain network, the system node comprising: a processor that when executing one or more instructions stored in an associated memory is configured to: authenticate a first user of the system node based on a first set of credentials of the first user; compute a second set of credentials for the first user for a second system node in the blockchain network; identify that the second system node does not have a second user that is different than the first user and that uses the second set of credentials; and responsive to the identification, create a new user of the second system node using the second set of credentials to allow the first user to access the second system node as the new user. ### Claim 2 (depends on 1) The system node of claim 1, wherein the processor is further configured to: authenticate the first user with the second system node using the second set of credentials to access services of the second system node. ### Claim 3 (depends on 1) The system node of claim 1, wherein the processor is further configured to: generate a hash of the first set of credentials. ### Claim 4 (depends on 3) The system node of claim 3, wherein the processor is further configured to: generate the second set of credentials based on the hash. ### Claim 5 (depends on 1) The system node of claim 1, wherein the processor is further configured to: dynamically create, monitor, and delete user identifiers (IDs) in the second system node. ### Claim 6 (depends on 5) The system node of claim 5, wherein the processor is further configured to: record a creation, a deletion, and a modification of the user IDs on a blockchain. ### Claim 7 (depends on 6) The system node of claim 6, wherein the processor is further configured to: enforce policies for the creation, the modification, and the deletion of the user IDs. ### Claim 8 A method, comprising: authenticating, by a first system node in a blockchain network, a first user of the first system node based on a first set of credentials of the first user; computing, by the first system node, a second set of credentials for the first user for a second system node in the blockchain network; identifying, by the first system node, that the second system node does not have a second user that is different than the first user and that uses the second set of credentials; and responsive to the identifying, creating, by the first system node, a new user of the second system node using the second set of credentials to allow the first user to access the second system node as the new user. ### Claim 9 (depends on 8) The method of claim 8, further comprising: authenticating the first user with the second system node using the second set of credentials to access services of the second system node. ### Claim 10 (depends on 8) The method of claim 8, further comprising: generating a hash of the first set of credentials. ### Claim 11 (depends on 10) The method of claim 10, further comprising: generating the second set of credentials based on the hash. ### Claim 12 (depends on 8) The method of claim 8, further comprising: dynamically creating, monitoring, and deleting user identifiers (IDs) in the second system node. ### Claim 13 (depends on 12) The method of claim 12, further comprising: recording a creation, a deletion, and a modification of the user IDs on a blockchain. ### Claim 14 (depends on 13) The method of claim 13, further comprising: executing a smart contract to enforce policies for the creation, the modification, and the deletion of the user IDs. ### Claim 15 A non-transitory computer readable medium comprising one or more instructions that when executed by a processor of a first system node in a blockchain network cause the processor to perform: authenticating a first user of the first system node based on a first set of credentials of the first user; computing a second set of credentials for the first user for a second system node in the blockchain network; identifying that the second system node does not have a second user that is different than the first user and that uses the second set of credentials; and responsive to the identifying, creating a new user of the second system node using the second set of credentials to allow the first user to access the second system node as the new user. ### Claim 16 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the one or more instructions further cause the processor to perform: authenticating the first user with the second system node using the second set of credentials to access services of the second system node. ### Claim 17 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the one or more instructions further cause the processor to perform: generating a hash of the first set of credentials. ### Claim 18 (depends on 17) The non-transitory computer readable medium of claim 17, wherein the one or more instructions further cause the processor to perform: generating the second set of credentials based on the hash. ### Claim 19 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the one or more instructions further cause the processor to perform: dynamically creating, monitoring, and deleting user identifiers (IDs) in the second system node. ### Claim 20 (depends on 19) The non-transitory computer readable medium of claim 19, wherein the one or more instructions further cause the processor to perform: recording a creation, a deletion, and a modification of the user IDs on a blockchain.