Add current version of libSRTP from CVS.

libsrtp/TODO

Index: libsrtp/TODO
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--- libsrtp/TODO	(revision 0)
+++ libsrtp/TODO	(revision 0)
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+TODO List
+
+1.4.1
+
+  - document which fields are in NBO/HBO, and check for consistency.
+
+  - move HAVE_U_LONG_LONG inside of datatypes.c, or some other
+    separate file
+
+  - re-write configure.in to make cross-compilation easier
+
+  - eliminate GENERIC_AESICM by generalizing the code a bit
+
+Older comments
+
+  - add tests for key_limit_t datatype 
+
+  - move octet_get_weight() from datatypes.c to math.c (any other
+    funcs?)
+
+Changes and additions planned
+
+  Make cipher and auth dealloc() functions zeroize the key-storage
+  areas before calling free().
+
+  Eliminate key_len from auth_init()
+
+  Doucument internal APIs (cipher, auth, srtp_protect, ...)
+
+
+SRTP options not (yet) included in this libaray:
+
+ - the aes-f8-mode cipher
+ - the Master Key Index
+ - re-keying using the key derivation function (only the initial
+   use of the PRF has been implemented, as it's sufficient
+   for most uses)
+
+
+(OLD) PLANNED CHANGES
+
+   strip out test/lfsr.c
+
+   Write new documentation!!!
+
+   Fix the x86 assembly code in aes.c.
+
+   Eliminate /* DAM */ - there's one in srtp.c
+
+   Change debugging so that it can print more than one line.  Or perhaps
+   just change it so that a single check of the debug-enabled flag is
+   needed.
+
+   Improve interface between cipher and rdbx - perhaps generalize rdbx
+   into 'nonce' datatype.
+
+   Make rijndael_icm accept variable sized keys.
+
+   Add rdbx functions that allow different-sized explicit sequence
+   numbers to be used.
+
+   Write uniform byte-buffering code for PRFs, preferably as macros.
+
+   Consider eliminating low-level alloc functions in favor of len()
+   functions, so that there need not be multiple allocations within a
+   particular alloc() function.