

                           TODO for Crypt::RSA
            $Id: TODO,v 1.25 2001/05/20 23:37:42 vipul Exp $

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P No Task                                              Status
- -- ------------------------------------------------  ------------------------
   1 Implement "Optimal Asymetric Encryption" (OAEP)   Jan 01 2001  0130 
     + oaep_encode()                                   Dec 25 2000  0000 
     + oaep_decode()                                   Dec 25 2000  0025 
     + oaep_encrypt()                                  Dec 25 2000  0100 
     + oaep_decrypt()                                  Dec 25 2000  0100 
     + implement octet_xor()                           Dec 26 2000  0245 
   2 oaep_encrypt()/decrypt() should work with         Jan 01 2001  0130 
     moduli of lengths that are not multiples
     of 8.
   3 SSLv3 compatability                               Postponed.
*  4 Read/write SSH public keys
     ::Key::Public::SSH should derive from 
     ::Key::Public and override its read() and 
     write()
*  5 Choose a large `e' with Maurer's method
   6 Move rsaparams() over to Crypt::RSA::Key          Not required.
   7 Implement i2osp(), os2ip(), mgf1()                Dec 21 2000  0425 
   8 Find & study PKCS #7 specification                Feb 19 2001  2345
   9 Read/write PGP 2.6i/5.x and GPG keys
     (Crypt::OpenPGP should do this, not us.)
  10 A comprehensive test suite                        Mar 03 2001  1900 
  11 Implement decryption using the Chinese            Apr 07 2001  1300
     Remainder Theorem (in core_decrypt()).
     (Patch by Benjamin Trott)
* 12 Resolve endianness issues.
  13 Move OAEP code to Crypt::RSA::EME::OAEP           Feb 12 2001  2000
  14 Ensure n is exactly specified number of           Mar 06 2001  2315
     bits
*    + Modify Crypt::Primes::maurer() to accept 
       an integer range instead of bitsize.
  15 Better exception handling in oaep_decrypt()       Not required.
     Cloak calls to os2ip/ip2os and core_decrypt()
     in evals and croak with "Decryption Error"
     if an exception is raised in these methods
     (Suggestion by magister on #perl: 
      Use DBI's error handling method) 
  16 Add support for Math::Pari bigints to             Apr 19 2001  1200
     Convert::ASN1.  <ben@rhumba.pair.com>                                  
  17 Add support for DER encoding in Convert::ASN1.    Postponed.
  18 Replace mod2int with Math::Pari::lift()           Feb 14 2001  0300 
  19 Implement core_sign() and core_verify()           Feb 12 2001  1330 
     + clock calls to core_encrypt()/decrypt()      
       in evals and return appropriate error
       messages. 
  19 Signature with appendix Crypt::RSA::PKCS15        Postponed.
     (Requires ASN1) 
  20 Signature with appendix (randomized)              Feb 19 2001  2030 
     Crypt::RSA::SSA::PSS 
  21 Split the code into modules listed in             Feb 14 2001  2100 
     MANIFEST 
     + Update tests.                                   Feb 14 2001  2100 
  22 Use the DBI error handling method.                Feb 15 2001  2300
  23 Plaintext and key material should                 Feb 15 2001  2300 
     we wiped out from memory at error
     and DESTROY() 
     + Implement Crypt::RSA::Key::DESTROY              Mar 03 2001  1500
  24 Move mgf1 to Crypt::RSA::DataFormat               Feb 15 2001  2100 
     and wrap in a method in 
     EME::OAEP, SSA::PSS
  25 Rename Cyphertext to Ciphertext in                Mar 06 2001  2315
     Crypt::RSA::Primitives::decrypt()
  26 Restructre Key modules into                       Mar 02 2001  2100
     Crypt::RSA::Key
     Crypt::RSA::Key::Public 
     %key = ( version  => ...,
              owner    => [],
              ownersig => [],
              type    => type
              size    => size in bits of n,
              n       => modulus
              e       => exponent
            ), 
     Crypt::RSA::Key::Private
     Same as public key and: 
     %key = (
             __d      => decryption exp,
             __p      => prime, 
             __q      => prime, 
            )
* 27 $key->check before operations
       n == p*q 
       d*e mod p == 1 
       d*e mod q == 1 
       p*u mod q == 1 

  28 Add support for version specific operations       Mar 31 2001  0400
     in EME::* and SSA::*.  Version number 
     should be provided at new()
  29 Crypt::RSA should be able to use non-native       Apr 29 2001  0400
     key formats through a mechanism similar to 
     variable EME/SSA support.
  30 Consider renaming EME to ES and SSA to SS.        Mar 31 2001  1500
     (Renamed EME to ES, SSA to SS)
* 31 Re-orgazine Crypt::RSA::Primitives.  
     core_encrypt|decrypt|sign|verify() should be
     replaced with rsaop() that uses the encryption 
     exponent or the decryption exponent depending
     on the type of key passed.  Also implement 
     decryption with CRT here.
  32 Write Crypt::RSA::EME|SSA::RSAREF2                Apr 06 2001  1930
     (as ::ES/SS::PKCS1v15)
* 33 Write Crypt::RSA::EME|SSA::Textbook
  34 Write a note in documentation on insecurity of    Apr 30 2001  0300
     Textbook RSA.  Also explain the concept of 
     Schemes.
* 35 Remove use lib 'locallib' from all modules 
     in production version. (nhuillard@ghs.fr)
* 36 Fix parameterization in ::ES::OAEP and 
     ::ES::PSS 
 
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