Working AES Encryption and Decryption in RUBY

gistfile1.txt

data = {
  "A99RequestData":  {
    "RequestId": "PB4343265424",
    "source": "PolicyBazaar",
    "policyNumber": "",
    "GetRecordType": "IND",
    "InputIdType": "C",
    "InputIdNo": "DCVPM4582S",
    "DateOfBirth": "28-03-1992",
    "MobileNumber": "",
    "Pincode": "421202",
    "BirthYear": "1992",
    "Tags": "",
    "ApplicationRefNumber": "",
    "FirstName": "Mohit",
    "MiddleName": "",
    "LastName": "kumar",
    "Gender": "M",
    "ResultLimit": "Latest",
    "photo": "",
    "AdditionalAction": ""
  }
}

# encryption
cipher = OpenSSL::Cipher::AES.new(256, :GCM)
cipher.encrypt
cipher.key = VENDOR_API["sbi_general"]["ckyc"]["key"]
cipher.iv  = VENDOR_API["sbi_general"]["ckyc"]["iv"]
cipher.auth_data = 'auth_data'
result = cipher.update(data.to_json) + cipher.final
enc = Base64.encode64(result).gsub("\n", "")

## descryption
base_data       = Base64.decode64(enc)
cipher          = OpenSSL::Cipher::AES.new(256, :GCM)
cipher.decrypt
cipher.padding = 0
cipher.key      = VENDOR_API["sbi_general"]["ckyc"]["key"]
cipher.iv       = VENDOR_API["sbi_general"]["ckyc"]["iv"]
cipher.auth_data = 'auth_data'
result           = cipher.update(base_data)
parsed_data      = result.encode("ASCII", "UTF-8", invalid: :replace, undef: :replace, replace: "")
parsed_json      = JSON(parsed_data)