Understanding Rekeying with Algorand Blockchain
This article explains Algorand’s rekeying process, it’s benefits and features.
First off, I’ll give a brief introduction to Algorand.
Algorand is the world’s first open source, permissionless, pure proof-of-stake blockchain protocol for the next generation of financial products. This blockchain, the Algorand protocol, is the brainchild of Turing Award-winning cryptographer Silvio Micali. A technology company dedicated to removing friction from financial exchange, Algorand Inc. is powering the DeFi evolution by enabling the creation and exchange of value, building new financial tools and services, bringing assets on-chain and providing responsible privacy models.
Rekeying, as a feature in Algorand, solves for the existing Public Address and Private Spending key friction by allowing users to change their Private Spending key without the need to change their Public Address. Rekeying enables more flexibility, Public Address continuity of use and permanent identifier with less overhead when changes to the Private Spending key occurs.
Algorand’s Rekeying in Layer-1 offers a seamless, easier experience for users and custody providers by allowing flexible changes of Private Spending Keys anytime without changing Public Addresses, giving Public address more continuity, and reducing operational overhead with the changes of Private Spending Keys. Many digital transactions need a secure, seamless way to transfer currency, and digital wallets or digital accounts require a Public Address as the account address and Private Spending Key as the account secure key to unlock that account. Rekeying also enables key unique functionalities wherever a digital wallet or account is enabled with Algorand’s blockchain feature that unlocks many possibilities for greater security, fast private key changes, low operational overhead for custody providers and much more.
Rekeying in Algorand is achieved by:
Flexibility:
This allows users to change the Private Spending Key anytime without needing to change the Public Address. Regularly changing the Public Address and Private Spending Key means that there is no consistent identifier for that user in a system or with an organization they use. Every time a user wants to initiate a transaction, they must provide the new information (Public Address) to peers and institutions they interact with in order to transact, therefore, any recurring transactions with peers or institutions do not have permanence, as their address is lost each time they change their Private Spending Key. Public Address continuity of use and permanent identifier with less overhead when changes to the Private Spending key occurs.
Continuity:
This feature is one that provides the ability to continue using one’s Public Address and keeping the assets in the same Public Address. It enables Public Address continuity of use and solidifies it as a permanent identifier for less operational overhead with each change of the Private Spending Key.
Operational Efficiency:
This helps to maintain existing Public Address as identifiers or other people and custody providers that continuously transact with that Public Address, lowering operational burdens.
BENEFITS OF REKEYING WITH ALGORAND
It provides a fast and seamless way to preserve account permanence.
It secures existing accounts with a new Private Spending Key at anytime, including with a hardware wallet, a multi-sig account, or smart contract based key.
Ability to reassign ownership of a contract
• This is often done in the form of reassigning ownership of a contract and often done in a larger settlement context.
• With blockchain, accounts can now have ownership re-assigned and in the context of atomic transfers/settlement.
4.Custody Providers (that includes banks, exchanges, savings associations, registered broker-dealers, and futures commission merchants) can benefit from Rekeying by:
(a.) Keeping their user’s Private Spending Keys cold at all times while only needing to manage one Public Address key
(b.) Eliminate the chain of old Public Address keys from having to move funds after using the Private Spending Keys. Eliminate complex off-chain solutions created to maintain a single Public Address key but give more control over the Private Spending Key.
(c.) Enable standardized key rotation schedules depending on security posture (i.e. a company can institute a monthly key rotation if desired).
- On-boarding large user bases for projects that are moving to Algorand from another blockchain or more traditional technology, making it easier to get users set-up and ensuring as little friction as possible is passed to them during the transition. Rekeying allows organizations to create and set-up accounts for their users ahead of time and reassign them when needed.
CONCLUSION
Rekeying, which is a very important protocol feature, is necessary for multiple organizations leveraging on the Algorand Blockchain to take advantage of the network.
Built into Algorand’s Layer-1 Protocol, it ensures Decentralization, Secure transactions, Scalability, Flexibility in Changing Private Spending Keys, Preserving Account Permanence, Account Novation, Governance and Control over Accounts, Enables low operational overhead, Secure accounts with hardware wallet, a multi-sig account, or smart contract based key, Ensure “contract address,” where the “smart contract” becomes the authorized signer.
For development purposes: