Here’s an article with a step-by-step guide on how to use the Binance API HMAC SHA256 authentication method in Ruby using Rails.

Authentication with Binance API using HMAC SHA256

The Binance API uses HMAC SHA256 for authentication, which requires a secret key. You can generate a secret key by following these steps:

• Go to [Binance Developer Dashboard]( and create an account if you don’t already have one.

• Click on “APIs & Services” and search for the Binance API documentation.

• Click on the “Authentication” section.

• Click on “Generate Secret Key” to generate a secret key.

Ruby Code

Here’s an example of how to use the Binance API HMAC SHA256 authentication method in Ruby using Rails:

require 'base64'

require 'json'







Set your Binance API credentials and secret key

BINANCE_API_KEY = "YOUR_API_KEY"

BINANCE_SECRET_KEY = "YOUR_SECRET_KEY"



Set the endpoint URL for the Binance API

END_POINT = "


class Binance

  ENDPOINT = "/v3/"


  def initialize(api_key, api_secret)

    @api_key = api_key

    @api_secret = api_secret

  end


  
Authenticate with the Binance API using HMAC SHA256

  def authenticate

    signature = Digest::SHA256.hexdigest(@api_key + ':' + @api_secret)

    url = "#{ENDPOINT}auth/signature"

    headers = {"Content-Type" => "application/x-www-form-urlencoded"}

    data = { "grant_type" => "urn:binance:api:binance:sign", "client_id" => BINANCE_API_KEY, "client_secret" => signature }

    response = HTTParty.get(url, headers: headers, body: data.to_url)


    if response.code == 200

      JSON.parse(response.body)['signature']

    else

      nil

    end

  end


  
Get the current user's information

  def get_user_info

    url = "#{ENDPOINT}users/me"

    headers = {"Content-Type" => "application/json"}

    response = HTTParty.get(url, headers: headers)


    if response.code == 200

      JSON.parse(response.body)['info']

    else

      nil

    end

  end


  
Get a specific user's information

  def get_user_info(user_id)

    url = "#{ENDPOINT}users/me?userId=#{user_id}"

    headers = {"Content-Type" => "application/json"}

    response = HTTParty.get(url, headers: headers)


    if response.code == 200

      JSON.parse(response.body)['info']

    else

      nil

    end

  end

end



Example usage:

binance = Binance.new(BINANCE_API_KEY, BINANCE_SECRET_KEY)

signature = binance.authenticate



Authenticate with the API using the signature

user_info = binance.get_user_info

puts user_info



Get a specific user's information

user_id = 12345

user_info = binance.get_user_info(user_id)

puts user_info

Important Notes

• Make sure to keep your secret key secure and do not hard-code it in your application.

• You should also make sure that the HMAC algorithm is enabled in the Binance API documentation. Currently, only SHA256 is supported.

• If you encounter any issues with authentication or error responses from the Binance API, check the Binance API documentation for troubleshooting guides.

I hope this helps! Let me know if you have any questions or need further assistance.