X-Git-Url: http://git.silcnet.org/gitweb/?p=crypto.git;a=blobdiff_plain;f=TODO;h=81a3dcb857ada66d4770c2b130e800c49d96add5;hp=e771182026d1f1d38be6bcbf3554dc12bba45477;hb=HEAD;hpb=77920dc9e59af610e5f06250a5f5c3d80c9738a3 diff --git a/TODO b/TODO index e7711820..81a3dcb8 100644 --- a/TODO +++ b/TODO @@ -1,253 +1,231 @@ -TODO for 1.1 And Beyond +TODO for 1.2 And Beyond ======================= -NOTE: Any item that doesn't have (***DONE) in it, isn't done yet. +NOTE: Any item that doesn't have (***DONE) in it, isn't done yet. The +(***TESTING NEEDED) means that the item has been done but not yet properly +tested. +NOTE: A TODO entry does not mean that it is ever going to be done. Some +of the entries may be just ideas, good, bad or ugly. If you want to work +on some of the TODO entries simply let us know about it by dropping a note +to silc-devel mailing list or appear on 'silc' channel on SILCNet. -lib/silccore/silcpacket.[ch] ****DONE**** -============================ - o SilcPacketEngine. (***DONE) +Crypto Library, lib/silccrypt/ +============================== - o New SILC Packet API. (***DONE) + o Add fingerprint to SilcSILCPublicKey and retrieval to silcpk.h, and + possibly to silcpkcs.h. + /* Return fingerprint of the `public_key'. Returns also the algorithm + that has been used to make the fingerprint. */ + const unsigned char * + silc_pkcs_get_fingerprint(SilcPublicKey public_key, + const char **hash_algorithm, + SilcUInt32 *fingerprint_len); -lib/silccore/silcpacket.[ch] ****PARTLY DONE**** -============================ + o Add CMAC and maybe others. Change needs rewrite of the internals of + the SILC Mac API, currently it's suitable only for HMACs. - o IV Included flag support, UDP transport support (***TESTING NEEDED) + o Global RNG must be changed to use SILC Global API. + o Global cipher, hash, mac, and pkcs tables must use SILC Global API. -lib/silccore/silcid.[ch] ****DONE**** -======================== - - o Add silc_id_str2id to accept the destination buffer as argument - and thus not require any memory allocation. Same will happen - with silc_id_payload_* functions. (***DONE) - - o silc_id_str2id, silc_id2str to non-allocating routines. (***DONE) - - -lib/silccore -============ - - o All payload encoding routines should take SilcStack as argument. - - -lib/silcske/silcske.[ch] -======================== - - o IV Included flag support in SKE (it currently doesn't accept it) - - o SilcConnAuth header file documentation. - - -lib/silccrypt ****PARTLY DONE**** -============= + o Add FIPS compliant RNG. o Implement the defined SilcDH API. The definition is in - lib/silccrypt/silcdh.h. + lib/silccrypt/silcdh.h. Make sure it is asynchronous so that it can + be accelerated. Also take into account that it could use elliptic + curves. - o SSH2 public keys support, allowing the use of SSH2 public keys in - SILC. + o Add Elgamal. - o OpenPGP certificate support, allowing the use of PGP public keys - in SILC. + o Add ECDSA support. - o SILC PKCS (silcpkcs.h) reorganizing when other PK supports added. - Move the SILC Public Key routines away from the crypto library into - the core library (silccore). silc_pkcs_public/private_key_* routines - to silc_public/private_key_* routines. The silc_public_key_* routines - should also automatically handle SILC Public Keys, and other keys - and certificates as well. Add fe. silcpk.h into silccore. It should - also include the Public Key Payload encoding and decoding routines. - (***DONE) + o Add ECDH support. - o Add DSS support. + o Add PKCS#1 RSAES-OAEP and RSASSA-PSS. - o Cipher optimizations (asm, that this) at least for i386 would be nice. + o Add GCM mode. - o ECDSA and ECDH. + o Do GCC vs ICC benchmarks of all key algorithms. + o Add DSA support to SILC public key. -lib/silcutil ****PARTLY DONE**** -============ + o The asynchronous functions to perhaps to _async to preserve backwards + compatibility with synchronous versions, and make easier to migrate + from 1.1 to 1.2. (***DONE) - o silc_stringprep to non-allocating version. + o AES CBC is missing proper alignment code. (***DONE) - o Compression routines are missing. The protocol supports packet - compression thus it must be implemented. SILC Zip API must be - defined. + o silc_pkcs_public_key_alloc should accept also SILC_PKCS_ANY as argument + and try all supported PKCS until one succeeds. (***DONE) - o Add builtin SOCKS and HTTP Proxy support, well the SOCKS at least. - SILC currently supports SOCKS4 and SOCKS5 but it needs to be compiled - in separately. + o Associate a default hash function with all PKCS algorithms. User can + override it in silc_pkcs_sign. DSA with FIPS186-3 determines the + hash algorithm by the key length. (***DONE) - o bool -> SilcBool (***DONE) + o Document all cipher names, hash names, mac names, pkcs names. (***DONE) - o Silc FD Stream to WIN32 (lib/silcutil/silcfdstream.h) + o SilcHmac must be replaced with generic SilcMac so that we can add + others than just HMAC algorithms. Backwards support (via #define's) + must be preserved. (***DONE) + o Change the DSA implementation to support FIPS186-3. This means that + the q length is determined by the key length. (***DONE) -lib/silcutil/silcbuffer.h ****DONE**** -========================= + o Add silc_crypto_init and silc_crypto_uninit. The _init should take + SilcStack that will act as global memory pool for all of crypto + library. It should not be necessary anymore to separately register + default ciphers, HMACs, etc, the _init would do that. However, if + user after _init calls silc_pkcs_register, for example, it would take + preference over the default once, ie. user can always dictate the + order of algorithms. (***DONE) - o Remove the `truelen' field from SilcBuffer as it is entirely - redundant since we can get the true length of the buffer by - doing buffer->end - buffer->header. Add silc_buffer_truelen - macro instead. Consider also removing `len' field too since - it effectively is buffer->tail - buffer->data, and adding - silc_buffer_len macro can do the same. These would save - totally 8 bytes of memory per buffer. (***DONE) + o Change SILC PKCS API to asynchronous, so that accelerators can be used. + All PKCS routines should now take callbacks as argument and they should + be delivered to SilcPKCSObject and SilcPKCSAlgorithm too. (***DONE) + o Change PKCS Algorithm API to take SilcPKCSAlgorithm as argument to + encrypt, decrypt, sign and verify functions. We may need to for exmaple + check the alg->hash, supported hash functions. Maybe deliver it also + to all other functions in SilcPKCSAlgorithm to be consistent. (***DONE) -lib/silcutil/silcbuffmt.[ch] ****PARTLY DONE**** -============================ + o Add DSS support. (***DONE) - o SilcStack aware silc_buffer_unformat + o All cipher, hash, hmac etc. allocation routines should take their name + in as const char * not const unsigned char *. (***DONE) - o SilcStack aware silc_buffer_format (***DONE) - o silc_buffer_format reallocates automatically (***DONE) - - o SILC_STR_OFFSET (***DONE) +SKR Library, lib/silcskr/ +========================= + o Add fingerprint as search constraint. -lib/silcutil/silcstack.[ch] ****DONE**** -=========================== + o Add SSH support. (***DONE, TESTING NEEDED) - o Data stack implementation (***DONE) + o Add OpenPGP support. Adding, removing, fetching PGP keys. (Keyring + support?) + o Add support for importing public keys from a directory and/or from a + file. Add support for exporting the repository (different formats for + different key types?). -lib/silcutil/silcstream.[ch] ****DONE**** -============================ + o Add find rule AND and OR. The default is always AND. Add + silc_skr_find_set_rule. - o Add abstract SilcStream. (***DONE) + o Add silc_skr_find_add_search_file that can be used to add a file to + search for the public keys. More than one can be set. Add support + for searching keys from file. + o Add silc_skr_find_add_search_dir that can be used to add a directory to + search for the public keys. More than one can be set. Add support + for seraching keys from directory. -lib/silcutil/silcsocketstream.[ch] ****PARTY DONE**** -================================== + o SilcStack to SKR API. - o Add SilcSocketStream (***DONE) - o Add SilcSocketStream for WIN32 +SILC Accelerator Library +======================== - o Test QoS after the changes made to socket stream + o Diffie-Hellman acceleration to SILC Accelerator API. + o Diffie-Hellman software acceleration. -lib/silcutil/silcschedule*.[ch] ****DONE**** -=============================== + o Hardware acceleration through OCF (OCF-Linux, + http://ocf-linux.sourceforge.net). - o Scheduler can be optimized for FD tasks by changing the fd_queue - to SilcHashTable instead of using linked list. We need to do - one-to-one mapping of FD to task and hash table is more efficient - for this usage. + o VIA Padlock support. See http://www.logix.cz/michal/devel/padlock/ and + Gladman's code. - Also redefine the silc_select to perhaps return a separate - structure of the events that actually occurred, instead of - returning the events in the fd_list which is then traversed - in the generic code to find the changed events. This can be - made faster by having own struct which includes only the - changed events, thus the tarversing is faster since the whole - fd_list is not traversed anymore (it is still traversed in the - silc_select but at least it removes one extra tarversing later - for the same list). + o Implement GCM software acceleration. - Other task queues should be changed to use SilcList. (***DONE) + o Add hash function acceleration to SILC Accelerator API. - o Add SILC scheduler's internal routines into a table of implementation - function pointers, that the generic code then takes as extern from - implementation. These are the silc_schedule_internal_* routines. + o SILC Accelerator API. Provides generic way to use different kind of + accelerators. Basically implements SILC PKCS API so that SilcPublicKey + and SilcPrivateKey can be used but they call the accelerators. (***DONE) - o Change SILC_TASK_CALLBACK to non-static, and remove the macro - SILC_TASK_CALLBACK_GLOBAL. (***DONE) - - o SILC Schedule API changes to WIN32. - - -lib/silcutil/silcasync.[ch] ****DONE**** -=========================== - - o Add SilcAsyncOperation to utility library. Any function that takes - callback as an argument must/should return SilcAsyncOperation. + o Implement software accelerator. It is a thread pool system where the + public key and private key operations are executed in threads. (***DONE) + o Add SilcCipher support to SilcAccelerator and software accelerator. + Accelerate at least ciphers using CTR mode which can be done in + parallel. Do it in producer/consumer fashion where threads generate + key stream and other thread(s) encrypt using the key stream. (***DONE) -lib/silcutil/silctime.[ch] ****DONE**** -=========================== - - o SilcTime. (***DONE) - - o system time, universal, generalized. (***DONE) +lib/silcmath +============ -lib/silcutil/silcfsm.[ch] ****DONE**** -========================= - - o SILC Finite State Machine API. Replaces SILC Protocol API (***DONE) + o Prime generation progress using callback instead of printing to + stdout. + o All utility functions should be made non-allocating ones. -lib/silcutil/silcnet*, lib/silcutil/*/silc*net* ****PARTLY DONE**** -=============================================== + o Import TFM. We want TFM's speed but its memory requirements are + just too much. By default it uses large pre-allocated tables which + will eat memory when there are thousands of public keys in system. + We probably want to change TFM. (***DONE) - o Add UDP interface (***DONE) + o Add AND, OR and XOR support to TFM. (***DONE) - o Add UDP interface for WIN32 + o The SILC MP API function must start returning indication of success + and failure of the operation. (***DONE) - o New network interfaces (***DONE) + o Do SilcStack support for silc_mp_init and other MP function + (including utility ones) that may allocate memory. (***DONE) -lib/silcsftp +lib/silcasn1 ============ - o Porting to use the new util library. - + o Negative integer encoding is missing, add it. -lib/silcutil/epoc/* -=================== + o SILC_ASN1_CHOICE should perhaps return an index what choice in the + choice list was found. Currently it is left for caller to figure out + which choice was found. (***DONE) - o lib/silcutil/epoc routines missing or not completed. + o SILC_ASN1_NULL in decoding should return SilcBool whether or not + the NULL was present. It's important when it's SILC_ASN1_OPTIONAL + and we need to know whether it was present or not. (***DONE) - o The PKCS#1 also calls global RNG (even though it is not used - currently in SILC, the interface allows its use). - o Something needs to be thought to the logging globals as well, - like silc_debug etc. They won't work on EPOC. Perhaps logging - and debugging is to be disabled on EPOC. +lib/silcpgp +=========== + o OpenPGP certificate support, allowing the use of PGP public keys and + private keys. -lib/silcmath -============ + o Signatures for data, public keys and private keys (Signature packet). - o Import TFM. Talk to Tom to add the missing functions. Use TFM in - client and client library, but TMA in server, due to the significantly - increased memory consumption with TFM, and the rare need for public - key operations in server. + o Signature verification from public keys, private keys and other signed + data (Signature packet). - o Change LTM and TFM function names when importing to SILC tree to avoid - rare linking problems on system that has same named symbols already in - the system. + o Encryption and decryption support (Packet tags 8 and 18 most likely). - o The SILC MP API function must start returning indication of success - and failure of the operation. + o Retrieval of User ID from public key and private key (Used ID packet + and User Attribute packet). - o Do SilcStack support for silc_mp_init, silc_mp_init_size and other - any other MP function (including utility ones) that may allocate - memory. + o Creation of OpenPGP key pairs. - o All utility functions should be made non-allocating ones. + o Trust packet handling (GNU PG compatible) from public and private keys. + o Add option that the signature format doesn't use the OpenPGP format + but whatever is the default in SILC crypto library. -lib/silcasn1 ****PARTLY DONE**** -============ - - o ASN.1 library (***DONE) - o Header documentation missing. (***DONE) +lib/silcssh +=========== - o Some string encodings missing (copy/paste matter). (***DONE) + o Add option that the signature format doesn't use the SSH2 protocol + but whatever is the default in SILC crypto library; + silc_ssh_private_key_set_signature_type, or something. - o Negative integer encoding + o SSH2 public key/private key support, allowing the use of SSH2 keys. + RFC 4716. (***DONE) lib/silcpkix @@ -256,68 +234,13 @@ lib/silcpkix o PKIX implementation -lib/silcserver -============== - - o (Re)write commands/command replys. +lib/silccms +=========== - o (Re)write notify handling. + o Cryptographic Message Syntax (RFC 3852), the former PKCS #7 - o The SERVER_SIGNOFF notify handing is not optimal, because it'll - cause sending of multiple SIGNOFF notify's instead of the one - SERVER_SIGNOFF notify that the server received. This should be - optimized so that the only SERVER_SIGNOFF is sent and not - SIGNOFF of notify at all (using SIGNOFF takes the idea about - SERVER_SIGNOFF away entirely). - o Another SERVER_SIGNOFF opt/bugfix: Currently the signoff is - sent to a client if it is on same channel as the client that - signoffed. However, the entire SERVER_SIGNOFF list is sent to - the client, ie. it may receive clients that was not on the - same channel. This is actually against the specs. It must be - done per channel. It shouldn't receive the whole list just - because one client happened to be on same channel. - - o MAYBE: The SilcChannelClientEntry can be: - SilcUInt32 address; - SilcUInt32 mode; - - where address is SilcClientEntry address XOR SilcChannelEntry. - You can get SilcClientEntry by doing client = chl->address XOR channel, - and SilcChannelEntry by doing channel = chl->address XOR client. - As long as the other pointer is always available when accessing the - structure this can be done. - - o Add reference counters to all Silc*Entry structures - - o SERVICEs support (plugin, SIM) - - o If client's public key is saved in the server (and doing public key - authentication) then the hostname and the username information could - be taken from the public key. Should be a configuration option! - - o Add a timeout to handling incoming JOIN commands. It should be - enforced that JOIN command is executed only once in a second or two - seconds. Now it is possible to accept n incoming JOIN commands - and process them without any timeouts. THis must be employed because - each JOIN command will create and distribute the new channel key - to everybody on the channel (Fix this to 0.9.x). - - o Related to above. If multiple JOINs are received in sequence perhaps - new key should be created only once, if the JOINs are handeled at the same - time. Now we create multiple keys and never end up using them because - many JOINs are processed at the same time in sequence. Only the last - key ends up being used. - - o The CMODE cipher & hmac change problem (#101). - - -lib/silcclient -============== - - o Some form of rewrite to make it more efficient. - - o Clear up interfaces. +lib/silcsmime +============= - o Remove silc_client_run and silc_client_run_one from calling SilcSchedule. - Leave the scheduling entirely to application. + o S/MIME (RFC 3851)