1. Rating
 
  Technical quality

    4: Contents are mostly correct. Some improvements suggested below.
    
  Originality

    4: Contains some new ideas, but can be developed as described
       below; good analysis of current state
  
  Editorial quality

    5: Clear, understandable and easy to read

  Overall grade (overall, how do you rate this paper?)

    4: Very good
  
  Confidence (how confident are you about this review?)

    2: I have some general knowledge of this subject


2. Detailed comments

  2a. Technical quality

      Identity based authentication and key establishment protocols are
      explored in this paper. The topic is reviewed from applied security
      engineering point of view. The goal is to find out the different building
      blocks in conceptual level that can be utilized when designing new 
      service and protocol architectures. With the same level of abstraction
      is also explained the symmetric key cryptography. In general, background
      to identity based cryptography is provided. Basic theorems behind the
      protocols are explained in high level. Examples of the existing
      applications and the introduction of the new simple symmetric key based
      identity binding authentication and key establishment scheme is
      presented.

      Strengths of the paper are that it is very easy to read and
      surveys through the large set of references. Therefore it enables
      fast adoption of available tools for anyone who is already familiar
      with concepts. However, weakness of the paper is that it does
      contain only a bit of self-contained information. The reader who is
      not familiar with the topic will not educate much after reading it.
      I suggest that one ID-based AKE protocol would be presented in more
      detail. In such a way that "why it is secure?" question would also 
      be covered.
 
      Paper provides a good survey of the state of the art in the
      case of identity based authentication and key establishment protocols.


  2b. Originality

      I think that some of the ideas presented in the paper are new.


  2c. Editorial quality

      As mentioned earlier, the readability of the paper is great.
      How easy it is to understand depends on the reader, but sure is
      that it is not an introduction level text to the topic. Abstract
      describes the contents of the paper well. The Introduction section 
      is good. It clearly explains background of the topic, gives goal of 
      the survey and introduces contents of the paper.

      (section II) Many of the protocols that are presented are based on
      parings. One paragraph about parings would be good in beginning of
      the section.

      (section III) In section II attacks were considered with Diffie-
      Hellman protocol and with Pairing Based Key establishment. However,
      section III does not talk about possible attacks at all. Can we say
      something how secure the protocols in section III are?

      (page 4) Schematic picture of "User Authentication for Internet
      based Services with Operator Short Message Service" would be clarifying.