ChangeLog

2002-05-15  Niels Möller  <nisse@cuckoo.hack.org>

	* aes-internal.h (struct aes_table): Renamed the shift_idx field
	to sparc_idx, as it will be tweaked to improve the sparc code.
	Also reduced its size to [2][4].
	(IDX_FACTOR): Deleted constant.
	* aes-encrypt-table.c (_aes_encrypt_table): Adapted initializer of
	sparc_idx. 
	* aes-decrypt-table.c (_aes_decrypt_table): Likewise.
	* asm.m4: Deleted AES_SIDX2, to match struct aes_table.

	* sparc/aes.asm (_aes_crypt): Unrolled the inner loop, preparing
	for optimizations suggested by Marcus Comstedt.
	(_aes_crypt): Eliminated i from the first copy of the inner loop.
	(_aes_crypt): And from the second copy.
	(_aes_crypt): And from the third copy.
	(_aes_crypt): And from the fourth copy.
	(_aes_crypt): Renamed .Linner_loop to .Lround_loop.
	(_aes_crypt): Eliminated the loop variable i from the unrolled
	loop. 
	(_aes_crypt): Deleted moves of constants into t2.

2002-05-15  Niels Möller  <niels@s3.kth.se>

	* x86/aes-encrypt.asm (aes_encrypt): Use AES_SUBST_BYTE.
	* x86/aes-decrypt.asm (aes_decrypt): Likewise.
	(aes_decrypt): Use AES_STORE.
	(aes_decrypt): Deleted first xchgl instruction into, permuting the
	AES_ROUND calls instead.
	(aes_decrypt): Likewise for the final round.
	(aes_decrypt): Got rid if the xchgl instruction after the final
	round, folding it into the final round.

	* x86/machine.m4: Renamed AES_LAST_ROUND to AES_FINAL_ROUND.
	Updated users. 

	* x86/aes-decrypt.asm (aes_decrypt): Use the AES_LOAD macro.
	(aes_decrypt): Start using AES_ROUND.
	(aes_decrypt): Use AES_LAST_ROUND.

	* x86/aes-decrypt.asm (aes_decrypt): Moved function to a separate
	file... 
	* x86/aes.asm: ... from here.

	* x86/aes.asm (aes_decrypt): Use _aes_decrypt_table instead of
	itbl1-4. Commented out the inclusion of aes_tables.asm. 
	(aes_decrypt): Use _aes_decrypt_table instead of isbox.
	

	* x86/aes-decrypt.asm: New file, empty at the start.

	* Makefile.am (libnettle_a_SOURCES): Added aes-decrypt-table.c.

	* aes-decrypt.c (_aes_decrypt_table): Moved from this file...
	* aes-decrypt-table.c (_aes_decrypt_table): ... to a new file.
	
	* testsuite/aes-test.out: New file, with the output of
	testsuite/aes-test, when aes.c has been compiled with debugging
	printouts of intermediate state.

2002-05-15  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm: (_aes_crypt): Restore %fp at end of function, to
	make %fp available for other uses.

	* sparc/aes.asm: The frame setup was broken. Tried to fix it.
	Reverted to revision 1.70 + minor changes from the head revision.

	* x86/aes-encrypt.asm (aes_encrypt): Use test instead of cmpl $0,.

	* x86/machine.m4 (AES_SUBST_BYTE): New macro.

	* sparc/aes.asm: wtxt needs no register of it's own, as its
	pointed to by %sp. %g5 moved to %l0, the register previously
	allocated for wtxt, so that we stay clean of the reserved %g
	registers.

2002-05-14  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm: Avoid using %g6 and %g7, as they are reserved for
	operating sytem use. Use %i5 and %o7 instead. Also moved %g4 to %g1.
	(_aes_crypt): Allocate only 32 bytes local storage on the stack.
	Calculate wtxt and tmp using offsets from %sp, not %fp. 

2002-05-14  Niels Möller  <niels@s3.kth.se>

	* x86/aes-encrypt.asm (aes_encrypt): Replaced first quarter of the
	round function with an invocation of AES_ROUND.
	(aes_encrypt): Similarly for the second column.
	(aes_encrypt): Similarly for the rest of the round function.

	* x86/machine.m4 (AES_ROUND): New macro.

	* x86/aes-encrypt.asm (aes_encrypt): Use AES_LOAD macro.

	* x86/machine.m4 (AES_LOAD): New macro.

	* x86/aes-encrypt.asm (aes_encrypt): Use AES_STORE.

	* x86/machine.m4 (AES_STORE): New macro.

	* x86/aes-encrypt.asm (aes_encrypt): Use the AES_LAST_ROUND macro
	for the first column of the final round.
	(aes_encrypt): Similarly for the second column.
	(aes_encrypt): Similarly for the third and fourth column.

	(aes_encrypt): Deleted xchgl instruction in final round, by
	reordering the second and fourth round.

	* x86/machine.m4 (AES_LAST_ROUND): New macro.

	* x86/aes-encrypt.asm (aes_encrypt): Move code here...
	* x86/aes.asm: ...from here.	

	* x86/aes.asm: Use addl and subl, not add and sub. Replaced
	references to dtbl1-4 with references to _aes_encrypt_table.

	* configure.ac (asm_path): Enable x86 assembler.

	* x86/aes.asm (aes_decrypt): Adapted to the current interface.
	Notably, the order of the subkeys was reversed. Single block
	encrypt/decrypt works now.
	(aes_encrypt, aes_decrypt): Added an outer loop, so that we can
	encrypt more than one block at a time.

2002-05-07  Niels Möller  <niels@s3.kth.se>

	* configure.ac: Generate config.m4.

	* x86/aes.asm: Use C for comments, include the tables using
	include_src, and commented out the key setup functions.
	Fixed the processing of the first handling of the round function.
	Now, encryption of a single block works! Multiple blocks, and
	decryption, is still broken.

	* x86/machine.m4: New file (empty).

	* x86/aes-encrypt.asm: New file, empty for now.

	* Makefile.am (%.asm): Added asm.m4, machine.m4 and config.m4 to
	the m4 command line.
	(libnettle_a_SOURCES): Added aes-encrypt-table.c.

	* sparc/aes.asm: No need to include asm.m4, that is taken care of
	by the Makefile. 

	* config.m4.in: New file, configuration for asm.m4.

	* asm.m4 (C, include_src): New macros.

	* aes-encrypt-table.c: New file, table moved out from
	aes-encrypt.c. 

2002-05-06  Niels Möller  <niels@s3.kth.se>

	* configure.ac (CFLAGS): Don't enable -Waggregate-return.

2002-05-05  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: Pass no arguments to AM_INIT_AUTOMAKE.

2002-05-05  Niels Möller  <nisse@cuckoo.hack.org>

	* configure.ac: Update for automake-1.6.

	* configure.ac: Renamed file, used to be configure.in.
	
2002-03-20  Niels Möller  <nisse@cuckoo.hack.org>

	* testsuite/run-tests (test_program): Added missing single quote.

2002-03-20  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/run-tests (test_program): Test the exit status of the
	right process.

2002-03-19  Pontus Sköld  <pont@it.uu.se>

	* testsuite/run-tests: Removed /bin/bashisms to use with /bin/sh. 

2002-03-18  Niels Möller  <nisse@cuckoo.hack.org>

	* rsa-keygen.c (rsa_generate_keypair): Output a newline after a
	non-empty line of 'e':s (bad e was chosen, try again).

2002-03-16  Niels Möller  <nisse@cuckoo.hack.org>

	* configure.in (asm_path): AC_CONFIG_LINKS adds $srcdir
	automatically. 

2002-03-14  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm, x86/aes.asm: Added copyright notice.

	* Makefile.am (libnettle_a_SOURCES): Added aes-internal.h.
	(EXTRA_DIST): Added assembler files.

	* configure.in (asm_path): Use $srcdir when looking for the files. 
	* configure.in (asm_path): For now, disable x86 assembler code. 
	Bumped version to 1.6.

2002-02-25  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm (_aes_crypt): Moved increment of src into the
	source_loop. Also fixed stop condition, the loop was run 5 times,
	not 4, as it should.
	(_aes_crypt): Use src directly when accessing the source data,
	don't use %o5.
	(_aes_crypt): Renamed variables in source_loop.
	(_aes_crypt): Changed stop condition in source_loop to not depend
	on i. Finally reduced the source_loop to 16 instructions. Also
	increased the alignment of the code to 16.
	(_aes_crypt): In final_loop, use preshifted indices.
	(_aes_crypt): In final_loop, construct the result in t0. Use t0-t3
	for intermediate values.
	(_aes_crypt): In final_loop, use the register idx.
	(_aes_crypt): In final_loop, keep i multiplied by 4. Use key to
	get to the current roundkey.
	(_aes_crypt): In final_loop, use i for indexing.
	(_aes_crypt): Update dst in the output loop. This yields a delay
	slot that isn't filled yet.
	(_aes_crypt): Decrement round when looping, saving yet some
	instructions.
	(_aes_crypt): Reformatted code as blocks of four instructions
	each.
	(_aes_crypt): Copy the addresses of the indexing tables into
	registers at the start. No more need for the idx register.
	(_aes_crypt): Deleted idx register.
	(_aes_crypt): Some peep hole optimizations, duplicating some
	instructions to fill nop:s, and put branch instructions on even
	word addresses.

2002-02-22  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm (_aes_crypt): Moved some more additions out of the
	inner loop, using additional registers.
	(_aes_crypt): Deleted one more addition from the inner loop, by
	using the subkey pointer.

2002-02-19  Niels Möller  <nisse@cuckoo.hack.org>

	* configure.in (asm_path): Renamed "path" to "asm_path". Also look
	for a machine.m4.

2002-02-16  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm: Use that IDX2(j) == j ^ 2

	* Makefile.am (libnettle_a_SOURCES): Reordered aes-decrypt.c and
	aes-encrypt.c. For some strange reason it makes the benchmark go
	faster... 

	* sparc/aes.asm (_aes_crypt): Use double-buffering, and no
	separate loop for adding the round key.
	(round): Keep round index muliplied by 16, so it can be used
	directly for indexing the subkeys.
	(_aes_crypt): In the final loop, use ctx+round to access the
	subkeys, no need for an extra register.

2002-02-15  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm (_aes_crypt): Renaming variables, allocating
	locals starting from %l0.
	(_aes_crypt): Consistently use %l4, aka i, as the variable for the
	innermost loops.
	(_aes_crypt): Moved reading of ctx->nrounds out of the loop.
	(_aes_crypt): In final_loop, deleted a redundant mov, and use i as
	loop variable.
	(_aes_crypt): Started renumbering registers in the inner loop. The
	computation for the table[j] sub-expression should be kept in
	register %o[j].
	(_aes_crypt): Renamed more variables in the inner loop. Now the
	primary variables are t0, t1, t2, t3.

	* sparc/aes.asm (_aes_crypt): Swapped register %i0 and %o5, %i1
	and %o0, %i2 and %o4, %i3 and %o3, %i4 and %o2.
	(_aes_crypt): wtxt was stored in both %l1 and %l2 for the entire
	function. Freed %l2 for other uses.
	(_aes_crypt): Likewise for tmp, freeing register %o1.	

	* sparc/machine.m4: New file, for sparc-specific macros.

	* sparc/aes.asm (_aes_crypt): Hacked the source_loop, to get rid
	of yet another redundant loop variable, and one instruction.
	(_aes_crypt): Strength reduce loop variable in the
	inner loop, getting rid of one register.
	(_aes_crypt): Use pre-shifted indices (aes_table.idx_shift), to
	avoid some shifts in the inner loop.
	(_aes_crypt): Don't check for nrounds==0 at the start of the loop.

	* asm.m4: Define and use structure-defining macros.

	* Makefile.am (%.asm): Use a GNU pattern rule, to make %.o depend
	on both %.asm and asm.m4.

	* aes-internal.h (struct aes_table): New subtable idx_shift.
	Updated tables in aes_encrypt.c and aes_decrypt.c.

	* asm.m4: Use eval to compute values.

	* sparc/aes.asm (_aes_crypt): Deleted commented out old version of
	the code.

	* asm.m4: Added constants for individual rows of the aes table.

	* aes.c (IDX0, IDX1, IDX2, IDX3): New macros, encapsualting the
	structure of the idx table.

	* asm.m4: Define various aes struct offsets.

	* testsuite/cbc-test.c (test_cbc_bulk): Use aes_set_encrypt_key
	and aes_set_decrypt_key.

	* sparc/aes.asm (_aes_crypt): Use symbolic names for the fucntion
	arguments. 

2002-02-14  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm: Copied gcc assembler code for _aes_crypt.

	* aesdata.c: New program for generating AES-related tables.

	* testsuite/testutils.c (print_hex): New function (moved from
	yarrow-test.c). 

	* testsuite/rsa-keygen-test.c (progress): Declare the ctx argument
	as UNUSED.

	* testsuite/cbc-test.c (test_cbc_bulk): New function, testing CBC
	with larger blocks.

	* yarrow256.c: Replaced uses of aes_set_key with
	aes_set_encrypt_key. 

	* nettle-meta.h (_NETTLE_CIPHER_SEP): New macro, useful for
	algorithms with separate encyption and decryption key setup. 

	* aes-internal.h (struct aes_table): New structure, including all
	constant tables needed by the unified encryption or decryption
	function _aes_crypt.

	* aes.c (_aes_crypt): New function, which unifies encryption and
	decryption.

	AES key setup now uses two separate functions for setting
	encryption and decryption keys. Applications that don't do
	decryption need no inverted subkeys and no code to generate them.
	Similarly, the tables (about 4K each for encryption and
	decryption), are put into separate files.

	* aes.h (struct aes_ctx): Deleted space for inverse subkeys. For
	decryption, the inverse subkeys replace the normal subkeys, and
	they are stored _in the order they are used_. 

	* aes-set-key.c (aes_set_key): Deleted file, code moved...
	* aes-set-decrypt-key.c, aes-set-encrypt-key.c: New files,
	separated normal and inverse key setup.

	* aes-tables.c: Deleted, tables moved elsewhere...
	* aes-encrypt.c, aes-decrypt.c: New files; moved encryption and
	decryption funktions, and needed tables, into separate files.

2002-02-13  Niels Möller  <nisse@cuckoo.hack.org>

	* aes.c (aes_encrypt): Don't unroll the innerloop.
	(aes_encrypt): Don't unroll the loop for the final round.
	(aes_decrypt): Likewise, no loop unrolling.

	* aes-set-key.c (aes_set_key): Reversed the order of the inverted
	subkeys. They are now stored in the same order as they are used.

	* aes-tables.c (itable): New bigger table, generated by aesdata.c. 

	* aes.c (aes_decrypt): Rewrote to use the bigger tables.

2002-02-12  Niels Möller  <nisse@cuckoo.hack.org>

	* aes.c (aes_encrypt): Interleave computation and output in the
	final round.

	* aes-internal.h (AES_SMALL): New macro.

	* aes.c (aes_encrypt): Optionally use smaller rotating inner loop.

	* aes-tables.c (dtbl): Replaced with table generated by aesdata.

	* aes.c (aes_encrypt): Rewrite, now uses larger tables in order to
	avoid rotates.

	* sparc/aes.asm (aes_encrypt): Strength reduced on j, getting rid
	of one register and one instruction in the inner loop.

	* sparc/aes.asm (idx, aes_encrypt): Multiplied tabled values by 4,
	making it possible to get rid of some shifts in the inner loop.

	* configure.in: Fixed spelling of --enable-assembler. Commented
	out debug echo:s.

	* asm.m4: New file. For now, only doing changequote and changecom.  

	* sparc/aes.asm (aes_encrypt): Added comments.
	(aes_encrypt): Cut off redundant instruction per block, also
	saving one redundant register pointing to idx.
	(idx_row): New macro. Include asm.m4.

2002-02-11  Niels Möller  <nisse@cuckoo.hack.org>

	* sparc/aes.asm (key_addition_8to32): Cleaned up.
	Deleted gcc-generated debugging information.

	* sparc/aes.asm (key_addition32): First attempt at optimization.
	Made it slower ;-)

	* sparc/aes.asm (key_addition32): Unrolled loop, gained 4%
	speed, payed four instructions compared to gcc
	generated code. 
	
	* Makefile.am (.asm.o): New rule for assembling via m4.
	(libnettle_a_SOURCES): Added new rsa and aes files.

	* configure.in: New command line option --enable-assembler.
	Selects assembler code depending on the host system.

	* rsa-decrypt.c, rsa-encrypt.c: New files for rsa pkcs#1
	encryption. 

	* aes-set-key.c, aes-tables.c: New files, split off from aes.c.
	Tables are now not static, but use a _aes_ prefix on their names. 

	* aes-internal.h: New file.

	* cast128-meta.c (_NETTLE_CIPHER_FIX): Use _NETTLE_CIPHER_FIX. 

	* cbc.c (cbc_decrypt_internal): New function, doing the real CBC
	procesing and requiring that src != dst.
	(cbc_decrypt): Use cbc_decrypt_internal. If src == dst, use a
	buffer of limited size to copy the ciphertext.

	* nettle-internal.c (nettle_blowfish128): Fixed definition, with
	key size in bits.

	* nettle-meta.h (_NETTLE_CIPHER_FIX): New macro, suitable for
	ciphers with a fixed key size.

	* examples/nettle-benchmark.c (display): New function for
	displaying the results, including MB/s figures.

	* sparc/aes.asm: New file. Not yet tuned in any way (it's just the
	code generated by gcc).

2002-02-11  Niels Möller  <nisse@lysator.liu.se>

	* x86/aes.asm, x86/aes_tables.asm: New assembler implementation by
	Rafael Sevilla. 

2002-02-06  Niels Möller  <nisse@cuckoo.hack.org>

	Applied patch from Dan Egnor improving the base64 code.
	* base64.h (BASE64_ENCODE_LENGTH): New macro.
	(struct base64_ctx): New context struct, for decoding.
	(BASE64_DECODE_LENGTH): New macro.
	* base64.c (base64_decode_init): New function.
	(base64_decode_update): New function, replacing base64_decode.
	Takes a struct base64_ctx argument.
	* nettle-meta.h: Updated nettle_armor, and related typedefs and
	macros. 
	* testsuite/testutils.c (test_armor): Updated.
	* configure.in: Use AC_PREREQ(2.50).

2002-02-01  Niels Möller  <nisse@cuckoo.hack.org>

	* Released nettle-1.5.

2002-01-31  Niels Möller  <nisse@cuckoo.hack.org>

	* acinclude.m4: Commented out gmp-related macros, they're probably
	not needed anymore.

2002-01-31  Niels Möller  <nisse@lysator.liu.se>

	* configure.in: Added command line options --with-lib-path and
	--with-include-path. Use the RPATH-macros to get correct flags for
	linking the test programs with gmp.

	* acinclude.m4: New file.

2002-01-31  Niels Möller  <nisse@cuckoo.hack.org>

	* nettle.texinfo (Randomness): New subsection on Yarrow.

2002-01-30  Niels Möller  <nisse@cuckoo.hack.org>

	* nettle.texinfo (Randomness): New chapter.
	Spell checking and ispell configuration.

	* md5.c: Added reference to RFC 1321.

2002-01-24  Niels Möller  <nisse@cuckoo.hack.org>

	* nettle.texinfo (Public-key algorithms): Minor fixes.

2002-01-22  Niels Möller  <nisse@cuckoo.hack.org>

	* nettle.texinfo (Nettle soup): New chapter.
	(Hash functions): New subsection on struct nettle_hash. 
	(Hash functions): New subsection on struct nettle_cipher.
	(Keyed hash functions): New section, describing MAC:s and HMAC.
	(Public-key algorithms): New chapter.

	* testsuite/testutils.c (test_armor): New function.

	* testsuite/base64-test.c: New testcase.

	* testsuite/Makefile.am (TS_PROGS): Added base64-test.

	* nettle-meta.h (struct nettle_armor): New struct.

	* configure.in: Bumped version to 1.5.

	* Makefile.am (libnettle_a_SOURCES): Added base64 files, and some
	missing header files.

	* base64.c, base64.h, base64-meta.c: New files, hacked by Dan
	Egnor. 

2002-01-16  Niels Möller  <nisse@cuckoo.hack.org>

	* testsuite/yarrow-test.c: Deleted ran_array code, use
	knuth-lfib.h instead.

	* testsuite/testutils.c (test_rsa_md5, test_rsa_sha1): Moved
	functions here...
	* testsuite/rsa-test.c: ...from here.

	* testsuite/rsa-keygen-test.c: New file.

	* testsuite/knuth-lfib-test.c: New file.

	* Makefile.am (libnettle_a_SOURCES): Added knuth-lfib.c and
	rsa-keygen.c.

	* rsa-keygen.c: New file.

	* rsa.h (RSA_MINIMUM_N_OCTETS): New constant.
	(RSA_MINIMUM_N_BITS): New constant.
	(nettle_random_func, nettle_progress_func): New typedefs. Perhaps
	they don't really belong in this file.
	(rsa_generate_keypair): Added progress-callback argument.

	* macros.h (READ_UINT24, WRITE_UINT24, READ_UINT16, WRITE_UINT16):
	New macros.

	* knuth-lfib.c, knuth-lfib.h: New files, implementing a
	non-cryptographic prng.

2002-01-15  Niels Möller  <nisse@cuckoo.hack.org>

	* hmac-sha1.c: New file.

2002-01-14  Niels Möller  <nisse@cuckoo.hack.org>

	* configure.in: Bumped version to 1.1.

	* testsuite/hmac-test.c (test_main): Added hmac-sha1 test cases.

	* rsa.c (rsa_init_private_key, rsa_clear_private_key): Handle d. 

	* rsa.h (struct rsa_private_key): Reintroduced d attribute, to be
	used only for key generation output.
	(rsa_generate_keypair): Wrote a prototype.

	* Makefile.am (libnettle_a_SOURCES): Added hmac-sha1.c and
	nettle-internal.h. 

	* des.c: Use static const for all tables.
	(des_set_key): Use a new const * variable for the parity
	procesing, for constness reasons.

	* list-obj-sizes.awk: New file.

	* nettle-internal.c, nettle-internal.h: New files.

	* testsuite/Makefile.am (TS_PROGS): Added hmac-test. Deleted old
	m4-stuff. 

	* testsuite/testutils.h (LDATA): Moved this macro here,...
	* testsuite/rsa-test.c: ... from here.

	* testsuite/hmac-test.c: New file.

	* hmac.h: General cleanup. Added declarations of hmac-md5,
	hmac-sha1 and hmac-sha256.

	* hmac.c: Bug fixes.

	* hmac-md5.c: First working version.

	* Makefile.am (libnettle_a_SOURCES): Added hmac.c and hmac-md5.c.
	(libnettleinclude_HEADERS): Added hmac.h.

	* testsuite/rsa-test.c: Also test a 777-bit key.

	* rsa.c (rsa_check_size): Changed argument to an mpz_t. Updated
	callers. 
	(rsa_prepare_private_key): Compute the size of the key by
	computing n = p * q.

	* rsa-compat.c: Adapted to new private key struct.
	* rsa_md5.c: Likesize.
	* rsa_sha1.c: Likesize.

	* rsa.c (rsa_check_size): New function, for computing and checking
	the size of the modulo in octets.
	(rsa_prepare_public_key): Usa rsa_check_size.
	(rsa_init_private_key): Removed code handling n, e and d.
	(rsa_clear_private_key): Likewise.
	(rsa_compute_root): Always use CRT.

	* rsa.h (struct rsa_private_key): Deleted public key and d from
	the struct, as they are not needed. Added size attribute.

2002-01-12  Niels Möller  <nisse@cuckoo.hack.org>

	* Makefile.am: Added *-meta files.

	* rsa.c (rsa_init_public_key): New function.
	(rsa_clear_public_key): Likewise.
	(rsa_init_private_key): Likewise.
	(rsa_clear_private_key): Likewise.

	* aes-meta.c: New file.
	* arcfour-meta.c: New file.
	* cast128-meta.c: New file.
	* serpent-meta.c: New file.
	* twofish-meta.c: New file.

	* examples/nettle-benchmark.c: Use the interface in nettle-meta.h. 

2002-01-11  Niels Möller  <nisse@cuckoo.hack.org>

	Don't use m4 for generating test programs, it's way overkill. Use
	the C preprocessor instead.
	* testsuite/*-test.c: New file.

	* hmac.c, hmac.h, hmac-md5.c: New files.

	Defined structures describing the algoriths. Useful for code that
	wants to treat an algorithm as a black box.
	* nettle-meta.h, md5-meta.c, sha1-meta.c, sha256-meta.c: New
	files. 

2002-01-09  Niels Möller  <nisse@cuckoo.hack.org>

	* rsa-compat.c: Updated for new md5 and rsa conventions.

	* rsa_md5.c: Represent a signature as an mpz_t, not a string.
	Updated calls of md5 functions.
	* rsa_sha1.c: Likewise.

	* rsa.c (rsa_prepare_public_key): Renamed function, was
	rsa_init_public_key. 
	(rsa_prepare_private_key): Renamed function, was
	rsa_init_private_key. 

	* nettle.texinfo (Hash functions): Update for the changed
	interface without *_final. Document sha256.

	* testsuite/md5-test.m4, testsuite/sha1-test.m4,
	testsuite/sha256-test.m4, testsuite/yarrow-test.c: Updated for new
	hash function interface.

	* yarrow256.c: Removed calls of sha256_final and and some calls of
	sha256_init.

	* md5-compat.c (MD5Final): Call only md5_digest.

	* md5.c (md5_digest): Call md5_final and md5_init.
	(md5_final): Declared static.
	sha1.c, sha256.c: Analogous changes.
	
	* bignum.c (nettle_mpz_get_str_256): Declare the input argument
	const. 

2001-12-14  Niels Möller  <nisse@cuckoo.hack.org>

	* Makefile.am (EXTRA_DIST): Added $(des_headers). Changed
	dependencies for $(des_headers) to depend only on the source file
	desdata.c, not on the executable.	

2001-12-12  Niels Möller  <nisse@cuckoo.hack.org>

	* testsuite/yarrow-test.c (main): Updated testcase to match fixed
	generator. Send verbose output to stdout, not stderr.

	* yarrow256.c (yarrow_slow_reseed): Bug fix, update the fast pool
	with the digest of the slow pool.
	(yarrow256_init): Initialize seed_file and counter to zero, to
	ease debugging. 

2001-12-07  Niels Möller  <nisse@cuckoo.hack.org>

	* bignum.c (nettle_mpz_get_str_256): Fixed handling of leading
	zeroes. 

2001-12-05  Niels Möller  <nisse@cuckoo.hack.org>

	* testsuite/yarrow-test.c (main): Updated test to match the fixed
	key event estimator.

	* yarrow_key_event.c (yarrow_key_event_estimate): Fixed handling
	of timing info. 

	* nettle.texinfo (Copyright): Say that under certain
	circumstances, Nettle can be used as if under the LGPL.

	* README: Added a paragraph on copyright.

2001-11-15  Niels Möller  <nisse@cuckoo.hack.org>

	* yarrow256.c (yarrow256_force_reseed): New function.

2001-11-14  Niels Möller  <nisse@ehand.com>

	* testsuite/yarrow-test.c (main): Use yarrow256_is_seeded.

	* yarrow256.c (yarrow256_needed_sources): New function.
	(yarrow256_is_seeded): New function.
	(yarrow256_update): Use yarrow256_needed_sources. 

2001-11-14  Niels Möller  <nisse@cuckoo.hack.org>

	* testsuite/yarrow-test.out: Updated, to match the seed-file aware
	generator. 

	* testsuite/yarrow-test.c: Updated expected_output. Check the seed
	file contents at the end.

	* yarrow256.c (yarrow256_seed): New function.
	(yarrow_fast_reseed): Create new seed file contents.

2001-11-13  Niels Möller  <nisse@cuckoo.hack.org>

	* yarrow.h: Deleted yarrow160 declarations.

2001-11-02  Niels Möller  <nisse@ehand.com>

	* yarrow256.c (yarrow256_init): Fixed order of code and
	declarations. 

2001-10-30  Niels Möller  <nisse@ehand.com>

	* rsa-compat.h: Added real prototypes and declarations.

	* Makefile.am (libnettle_a_SOURCES): Added rsa-compat.h and
	rsa-compat.c. 

	* rsa-compat.c: New file, implementing RSA ref signature and
	verification functions.

	* configure.in: Check for libgmp. Deleted tests for SIZEOF_INT and
	friends. 

	* rsa_sha1.c: New file, PKCS#1 rsa-sha1 signatures. 
	* rsa_md5.c: New file, PKCS#1 rsa-md5 signatures.

	* rsa.c: New file with general rsa functions.

	* Makefile.am (libnettle_a_SOURCES): Added rsa and bignum files.

	* bignum.c, bignum.h: New file, with base256 functions missing in
	gmp. 

	* testsuite/Makefile.am: Added bignum-test.

	* testsuite/run-tests (test_program): Check the xit code more
	carefully, and treat 77 as skip. This convention was borrowed from
	autotest. 

	* testsuite/macros.m4: New macro SKIP which exits with code 77.

	* testsuite/bignum-test.m4: New file.

2001-10-15  Niels Möller  <nisse@ehand.com>

	* testsuite/Makefile.am (EXTRA_DIST): Include rfc1750.txt in the
	distribution.

2001-10-14  Niels Möller  <nisse@cuckoo.hack.org>

	* testsuite/des-test.m4: Added testcase taken from applied
	cryptography. 

	* testsuite/yarrow-test.c: Use sha256 instead of sha1 for checking
	input and output. Updated the expected values.

	* yarrow256.c (YARROW_RESEED_ITERATIONS): New constant.
	(yarrow_iterate): New function.
	(yarrow_fast_reseed): Call yarrow_iterate.

	* testsuite/yarrow-test.c: Added verbose flag, disabled by
	default. 

2001-10-12  Niels Möller  <nisse@ehand.com>

	* examples/nettle-benchmark.c: Added more ciphers.

	* Makefile.am (SUBDIRS): Added the examples subdir.

	* configure.in: Output examples/Makefile.

2001-10-12  Niels Möller  <nisse@cuckoo.hack.org>

	* examples/nettle-benchmark.c: New benchmarking program. 

2001-10-10  Niels Möller  <nisse@ehand.com>

	* testsuite/yarrow-test.c: Open rfc1750.txt. Hash input and
	output, and compare to expected values.

	* testsuite/Makefile.am (CFLAGS): Don't disable optimization.
	(run-tests): Set srcdir in the environment when running run-tests. 

	* testsuite/rfc1750.txt: Added this rfc as test input for yarrow. 

	* yarrow_key_event.c (yarrow_key_event_estimate): Check if
	previous is zero.
	(yarrow_key_event_init): Initialize previous to zero.

	* yarrow256.c: Added debug some output.

	* testsuite/yarrow-test.c (main): Better output of entropy
	estimates at the end. 

2001-10-09  Niels Möller  <nisse@ehand.com>

	* testsuite/Makefile.am (TS_PROGS): Added yarrow-test.

	* testsuite/yarrow-test.c: New file.

	* yarrow256.c (yarrow256_init): Initialize the sources. 
	(yarrow256_random): Fixed loop condition.

	* yarrow.h (YARROW_KEY_EVENT_BUFFER): New constant.

	* yarrow_key_event.c: New file.

	* Makefile.am (libnettle_a_SOURCES): Added yarrow_key_event.c.

2001-10-08  Niels Möller  <nisse@cuckoo.hack.org>

	* yarrow.h (struct yarrow_key_event_ctx): New struct.

	* yarrow256.c (yarrow_fast_reseed): Generate two block of output
	using the old key and feed into the pool.

	* yarrow.h (struct yarrow256_ctx): Deleted buffer, index and
	block_count. 

	* yarrow256.c (yarrow_fast_reseed): New function.
	(yarrow_slow_reseed): New function.
	(yarrow256_update): Check seed/reseed thresholds.
	(yarrow_gate): New function, extracted from
	yarrow_generate_block_with_gate which was deleted.
	(yarrow_generate_block_with_gate): Deleted function.
	(yarrow256_random): Don't buffer any output, instead gate after
	each request.
	(YARROW_GATE_THRESHOLD): Deleted constant.
	
2001-10-07  Niels Möller  <nisse@cuckoo.hack.org>

	* Makefile.am: Added yarrow files.

	* yarrow256.c: New file, implementing Yarrow. Work in progress. 

	* sha256.c: New file, implementing SHA-256.

	* testsuite/Makefile.am (CFLAGS): Added sha256-test.

	* testsuite/sha256-test.m4: New testcases for SHA-256.

	* shadata.c: New file, for generating SHA-256 constants.

	* sha.h: Renamed sha1.h to sha.h, and added declarations for
	SHA-256. 

2001-10-05  Niels Möller  <nisse@ehand.com>

	* testsuite/aes-test.m4: Added a comment with NIST test vectors.

2001-10-04  Niels Möller  <nisse@ehand.com>

	* rsa.h, rsa-compat.h, yarrow.h: New files. 

2001-09-25  Niels Möller  <nisse@cuckoo.hack.org>

	* Released version 1.0.

2001-09-25  Niels Möller  <nisse@ehand.com>

	* sha1.c: Include stdlib.h, for abort.

	* md5.c: Include string.h, for memcpy.

	* testsuite/Makefile.am (M4_FILES): New variable. Explicitly list
	those C source files that should be generated by m4.

	* configure.in: Changed package name from "libnettle" to "nettle".

	* Makefile.am (EXTRA_DIST): Added .bootstrap.

	* AUTHORS: Added a reference to the manual.

2001-09-25  Niels Möller  <nisse@lysator.liu.se>

	* des-compat.c (des_cbc_cksum): Bug fix, local variable was
	declared in the middle of a block.

2001-09-19  Niels Möller  <nisse@cuckoo.hack.org>

	* nettle.texinfo (Compatibility functions): New section,
	mentioning md5-compat.h and des-compat.h.

2001-09-18  Niels Möller  <nisse@ehand.com>

	* index.html: New file.

2001-09-16  Niels Möller  <nisse@cuckoo.hack.org>

	* nettle.texinfo: Added description of des3. Minor fixes.

	* testsuite/des-compat-test.c (cbc_data): Shorten to 32 bytes (4
	blocks), the last block of zeroes wasn't used anyway.

	* des-compat.c (des_compat_des3_decrypt): Decrypt in the right
	order. 
	(des_ncbc_encrypt): Bug fixed.
	(des_cbc_encrypt): Rewritten as a wrapper around des_ncbc_encrypt.

2001-09-14  Niels Möller  <nisse@ehand.com>

	* testsuite/des-compat-test.c: New file, copied from libdes
	(freeswan). All implemented functions but des_cbc_cksum seems to
	work now.

	* testsuite/Makefile.am (TS_PROGS): Added des-compat-test.

	* des-compat.c: Added libdes typedef:s. Had to remove all use of
	const in the process.
	(des_check_key): New global variable, checked by des_set_key.

	* des.c (des_set_key): Go on and expand the key even if it is
	weak.

	* des-compat.c (des_cbc_cksum): Implemented.
	(des_key_sched): Fixed return values.

2001-09-11  Niels Möller  <nisse@cuckoo.hack.org>

	* Makefile.am: Added des-compat.c and des-compat.h

	* des-compat.c: Bugfixes, more functions implemented.

	* des-compat.h: Define DES_ENCRYPT and DES_DECRYPT. Bugfixes.

2001-09-10  Niels Möller  <nisse@ehand.com>

	* nettle.texinfo (Copyright): Added copyright information for
	serpent.
	(Miscellaneous functions): Started writing documentation on the CBC
	functions.
	(Cipher Block Chaining): This section more or less complete now.

2001-09-09  Niels Möller  <nisse@cuckoo.hack.org>

	* testsuite/cbc-test.m4: Record intermediate values in a comment. 
	* testsuite/des3-test.m4: Likewise.

	* testsuite/aes-test.m4: Added test case that appeared broken in
	the cbc test.

	* cbc.c (cbc_encrypt): Bug fix, encrypt block *after* XOR:ing the
	iv. 

	* Makefile.am (libnettleinclude_HEADERS): Added cbc.h. Deleted
	des3.h. 
	(libnettle_a_SOURCES): Added des3.c.

	* testsuite/Makefile.am (TS_PROGS): Added des3-test and cbc-test.

	* testsuite/cbc-test.m4: New testcase.

	* testsuite/des3-test.m4: New testcase.

	* cbc.h (CBC_CTX): New macro.
	(CBC_ENCRYPT): New macro.
	(CBC_DECRYPT): New macro.

	* des.c (des_fix_parity): New function.

	* des3.c: New file, implementing triple des.