Trying to generate a presigned url link so an user can download an Amazon S3 object, but getting invalid request

I am currently using the Ruby aws-sdk, version 2 gem with server-side customer-provided encryption key(SSE-C). I am able to upload the object from a rails form to Amazon S3 with no issues.

def s3
  Aws::S3::Object.new(
    bucket_name: ENV['S3_BUCKET'],
    key: 'hello',
  )
end

def upload_object
  customer_key = OpenSSL::Cipher::AES.new(256, :CBC).random_key
  customer_key_md5 = Digest::MD5.new.digest(customer_key)
  object_key = 'hello'
  options = {}
  options[:key] = object_key
  options[:sse_customer_algorithm] = 'AES256'
  options[:sse_customer_key] = customer_key
  options[:sse_customer_key_md5] = customer_key_md5
  options[:body] = 'hello world'
  options[:bucket] = ENV['S3_BUCKET']
  s3.put(options)
  test_params = {
    object_key: object_key,
    customer_key: Base64.encode64(customer_key),
    md5_key: Base64.encode64(customer_key_md5),
  }
  Test.create(test_params)
end

But I'm having some issues with retrieving the object and generating a signed url link for the user to download it.

def retrieve_object(customer_key, md5)
  options = {}
  options[:key] = 'hello
  options[:sse_customer_algorithm] = 'AES256'
  options[:sse_customer_key] = Base64.decode64(customer_key)
  options[:sse_customer_key_md5] = Base64.decode64(md5)
  options[:bucket] = ENV['S3_BUCKET']
  s3.get(options)
  url = s3.presigned_url(:get)
end

The link is generated, but when I clicked on it, it directs me to an amazon page saying.

<Error>
<Code>InvalidRequest</Code>
<Message>
The object was stored using a form of Server Side Encryption. The correct   parameters must be provided to retrieve the object.
</Message>
<RequestId>93684EEBA062B1C2</RequestId>
<HostId>
OCnn5EG7ydfoKzsmEDMbqK5kOhLFpNXxVRdekfhOfnBc6s+jtPYFsKi8IZsEPcd9ConbYUHgwC8=
</HostId>
</Error>

The error message is not helping as I'm unsure what parameters I need to add. I think I might be missing some permissions parameters.

Get Method http://ift.tt/1Gx2c89

Presigned_Url Method http://ift.tt/1EZAUoI