-
-
-SFTP Library, lib/silcsftp/
-===========================
-
- o Read prefetch (read-ahead, reading ahead of time). Maybe if this can
- be done easily.
-
-
-SKR Library, lib/silcskr/
-=========================
-
- o Add fingerprint as search constraint.
-
- 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?).
-
- o Change the entire silc_skr_find API. Remove SilcSKRFind and just simply
- add the find constraints as variable argument list to silc_skr_find, eg:
-
- silc_skr_find(skr, schedule, callback, context,
- SILC_SKR_FIND_PUBLIC_KEY, public_key,
- SILC_SKR_FIND_COUNTRY, "FI",
- SILC_SKR_FIND_USAGE, SILC_SKR_USAGE_AUTH,
- SILC_SKR_FIND_END);
-
- NULL argument would be ignored and skipped.
-
- o Add OR logical rule in addition of the current default AND, eg:
-
- // Found key(s) MUST have this public key AND this country.
- silc_skr_find(skr, schedule, callback, context,
- SILC_SKR_FIND_RULE_AND,
- SILC_SKR_FIND_PUBLIC_KEY, public_key,
- SILC_SKR_FIND_COUNTRY, "FI",
- SILC_SKR_FIND_END);
-
- // Found key(s) MUST have this public key OR this key context
- silc_skr_find(skr, schedule, callback, context,
- SILC_SKR_FIND_RULE_OR,
- SILC_SKR_FIND_PUBLIC_KEY, public_key,
- SILC_SKR_FIND_CONTEXT, key_context,
- SILC_SKR_FIND_END);
-
- o SilcStack to SKR API.
-
-
-Crypto Library, lib/silccrypt/
-==============================
-
- 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 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);
-
- 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 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.
-
- 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)
-
- o Add DSA support to SILC public key.
-
- o Add DSS support. (***DONE)
-
- o Implement the defined SilcDH API. The definition is in
- 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 Add ECDSA support.
-
- o Add ECDH support.
-
- o AES CBC is missing proper alignment code (see silc_1_1_branch).
-
- o All cipher, hash, hmac etc. allocation routines should take their name
- in as const char * not const unsigned char *. (***DONE)
-
-
-SILC Accelerator Library
-========================
-
- 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 Implement software accelerator. It is a thread pool system where the
- public key and private key operations are executed in threads.
- (***DONE)
-
- o Add init options to SilcAcceleratorObject as a SilcAcceleratorOption
- structure. Each accelerator defines the options that they support and
- can be retrieved from the SilcAccelerator with silc_acc_get_options.
- The format must also be machine parseable. The structure can be of the
- following format:
-
- typedef struct SilcAcceleratorOptionStruct {
- const char *option; /* Option name */
- const char *display_name; /* Option displayable name */
- SilcParamType type; /* Option data format */
- void *default_value; /* Option's default value */
- SilcUInt32 default_value_len; /* Default value length */
- } *SilcAcceleratorOption;
-
- For software accelerator it could be for example:
-
- { "min_threads", "Minimum threads", SILC_PARAM_UINT32, (void *)2, 4 },
- { "max_threads", "Maximum threads", SILC_PARAM_UINT32, (void *)4, 4 },
-
- o Diffie-Hellman acceleration
-
- (o Symmetric key cryptosystem acceleration? They are always sycnhronouos
- even with hardware acceleration so the crypto API shouldn't require
- changes.) maybe
-
-
-lib/silcmath
-============
-
- 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's fp_int dynamic so that a specific
- size can be allocated for the int. We could have two new functions:
-
- SilcBool silc_mp_init_size(SilcMPInt *mp, SilcUInt32 bit_size);
- SilcBool silc_mp_sinit_size(SilcStack stack, SilcMPInt *mp,
- SilcUInt32 bit_size);
-
- Which by default allocates `bit_size' bits instead of some default
- value. silc_mp_init would allocate the default FP_SIZE with TFM
- and do normal init with TMA and GMP. _init_size with TMA and GMP
- would be same as _init.
-
- o Add AND, OR and XOR support to TFM or ask Tom to do it.
-
- o The SILC MP API function must start returning indication of success
- and failure of the operation.
-
- 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 Prime generation progress using callback instead of printing to
- stdout.
-
- o All utility functions should be made non-allocating ones.
-
-
-SILC XML Library, lib/silcxml/
-==============================
-
- o SILC XML API (wrapper to expat). Look at the expat API and simplify
- it. The SILC XML API should have at most 8-10 API functions. It should
- be possible to create full XML parser with only one function. And, it
- should be possible to have a function that is able to parse an entire
- XML document. It should also have a parser function to be able to
- parse a stream of XML data (SilcStream). It MUST NOT have operations
- that require multiple function calls to be able to execute that one
- operation (like creating parser).
-
-
-lib/silcske/silcske.[ch]
-========================
-
- o Ratelimit to UDP/IP transport for incoming packets.
-
-
-lib/silcasn1
-============
-
- o Negative integer encoding is missing, add it.
-
- 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 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)
-
-
-lib/silcpgp
-===========
-
- o OpenPGP certificate support, allowing the use of PGP public keys.
-
-
-lib/silcssh
-===========
-
- o SSH2 public key/private key support, allowing the use of SSH2 keys.
- RFC 4716. (***DONE)
-
-
-lib/silcpkix
-============
-
- o PKIX implementation
-
-
-apps/silcd
-==========
-
- o Deprecate the old server. Write interface for the new lib/silcserver
- server library. The interface should work on Unix/Linux systems.
-
- o Consider deprecating also the old config file format and use XML
- istead. This should require SILC XML API implementation first.
-
- o The configuration must support dynamic router and server connections.
- The silcd must work without specifying any servers or routers to
- connect to.
-
- o The configuration must support specifying whether the server is
- SILC Server or SILC Router. This should not be deduced from the
- configuration as it was in < 1.2.
-
- o The configuration must support specifying the ciphers and hmacs and
- their order so that user can specify which algorithms take preference.
-
-
-lib/silcserver
-==============
-
- o Rewrite the entire server. Deprecate apps/silcd as the main server
- implementation and create lib/silcserver/. It is a platform
- independent server library. The apps/silcd will merely provide a
- a simple interface for the library.
-
- o Write the SILC Server library extensively using SILC FSM.
-
- o Server library must support multiple networks. This means that one
- server must be able to create multiple connections that each reach
- different SILC network. This means also that all cache's etc. must
- be either connection-specific or network-specific.
-
- o Library must support dynamic router and server connections. This means
- that connections are create only when they are needed, like when someone
- says JOIN foo@foo.bar.com or WHOIS foobar@silcnet.org.
-
- o Library must support server-to-server connections even though protocol
- prohibits that. The responder of the connection should automatically
- act as a router. The two servers create an own, isolated, SILC network.
- To be used specifically with dynamic connections.
-
- o Library must support multiple threads and must be entirely thread safe.
-
- o Library must have support for SERVICE command.
-
- o Both UDP and TCP support for incoming connecetions. Maintaining long
- term UDP sessions.
-
- o The server must be able to run behind NAT device. This means that
- Server ID must be based on public IP instead of private IP (See
- also NAT detection protocol in SILC protocol specification).
-
- o The following data must be in per-connection context: client id cache,
- server id cache, channel id cache, all statistics must be
- per-connection.
-
- o The following data must be in per-thread context: command context
- freelist/pool, pending commands, random number generator.
-
- o Do inccoming packet processing in an own FSM thread in the
- server-threads FSM. Same as in client library.
-
- o Binding to other ports than 706 too. To allow easier traversing
- through NATs and firewalls server should also bind to 80, 443 and 7706
- by default (at least try to bind). Connections must work normally
- even if they were established to some other port other than 706.
-
- Connection option that attemps to connect to remot server with various
- different mechanisms: UDP 706, TCP 706, TCP 80, TCP 443, UDP 7706 and
- TCP 7706. This is the so called hole punching mechanism.
-
- o Ability to recover from rekey errors, at least try to.
-
- o Reference count all Silc*Entry structures.
-
- Some issues that must be kept in mind from 1.0 and 1.1 silcd's:
-
- o The server and router software MUST work out of the box. After
- installation the server must not require any configuration to run the
- most basic working configuration. No defining IP addresses, etc.
- The server must work just by running it.
-
- 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 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.
-
- 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.
projects / runtime.git / blobdiff