Algorand: A secure and efficient distributed ledger


A distributed ledger is an intangible sequence of data that can be read and added by everyone. Distributed ledgers represent changing the way a democratic society operates. They protect all forms of traditional transactions – such as payment, transfer, placement of titles where they occur; and enable completely new transactions – such as cryptocurrensets and smart contracts. They can remove links and bring a new trust paradigm. As currently used, distributed ledgers are unable to achieve their maximum power.

Algorand is another book, used in a democratic and effective way. Unlike earlier letters based on “proof of work,” they refer to “miners.” Indeed, Algorand only needs a small amount of calculation. Moreover, its trading history does not “put a fork” on a large scale: that is, Algorand ensures the end of everything that is done.

In fact, each user is identified by his or her public key. The program starts with the first set of users, each with a certain amount of money. The first condition is considered general information. At any time, each public key can make a payment: that is, transfer all or part of the money they currently have to another public key, by signing the signature.

Assuming that, the purpose of the plan is to organize all the payments in the order ordered in blocks, B1, B2, …, each containing a set of payments, to ensure the three properties are not available to any authorized person: (P1) each block is immediately known worldwide; (P2) all payments in each block B are valid, compared to the amount each payer has in its original form and payments in previous blocks; and (P3) each valid payment appears immediately in the box.

Algorand model

In the Algorand model we take the availability of a secure digital signature system in the sense that each message has a unique valid signature (even if the public has chosen a conflicting key);. We also consider the discovery of a random oracle – or the hash H function performed as a random oracle, as is done in Bitcoin. The proposed program is a limited license: any user can join at any time. The player’s way of joining Algorand is the same way as joining Bitcoin. That is, a new user I join a program where an existing user makes a payment to i.

  1. Users have single and vibrant clocks, and all reliable user watches have the same speed. Generally, “a moment is the moment for everyone.” Users communicate by spreading messages (e.g., by whispering to peers).
  2. We assume that each broadcast message initiated by a trusted user is accepted (by almost all) loyal users within a specified period depending on the length of m.
  3. Specifically, as our system looks at only two categories of messages – control messages that are several hundred bits long, and blocks (selected to be) several megabyte lengths, we allow λ and be the maximum time limit for two classes, respectively. The same communication model is considered as analyzing Bitcoin on asynchronous networks.

It is well known that synchronization is not possible to achieve a completely desirable network by any decision-making process, where messages can arrive after a reasonably old delay, even if there is a limited set of users and one malicious user. It is important to emphasize that the Enemy decides entirely when each user receives a particular message if it is within a consistent time frame. Therefore, messages can reach different users under different orders and at different times. Algorand high-level building. Algorand is a distributed system that is organized around

From the honest majority of users to the honest majority of the money.

In Algorand a real person can have as many public keys as he wants. To avoid Sybil’s attack, each public key is selected to be the leader or guarantor equal to the amount of money it owns. Algorand operates under the guise of public trust (HMM). To highlight our core strategies, however, we begin by assuming that each user has only one public key and introduces the system under the simple and reliable multi-user concept (HMU).

Cryptographic option.

It is easy to select r and S V r randomly and publicly from a set of users, based on r or H (Br – 1). However, even though the past is unplanned, the identity of the selected users became public from the start, and our powerful Enemy can quickly demonstrate before they take any action honestly. In addition, Algorand has a limited license.

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