ChangeLog

2018-12-26  Niels Möller  <nisse@lysator.liu.se>

	* examples/hogweed-benchmark.c (make_openssl_rsa_ctx): New helper
	function. Call openssl's RSA_generate_key_ex rather then the
	deprecated RSA_generate_key.
	(bench_openssl_rsa_init, bench_openssl_rsa_tr_init): Use it.

	* eccdata.c (ecc_pippenger_precompute): Check that table size is
	at least 2. Intended to silence warning from the clang static
	analyzer.

	* configure.ac: Bump package version to 3.5.
	(LIBNETTLE_MAJOR): Bump major number, now 7.
	(LIBHOGWEED_MAJOR): Bump major number, now 5.
	(LIBNETTLE_MINOR, LIBHOGWEED_MINOR): Reset to zero.

	* pkcs1-internal.h: New header file, moved declarations of
	_pkcs1_sec_decrypt and _pkcs1_sec_decrypt_variable here.
	* rsa-internal.h: ... old location.
	* Makefile.in (DISTFILES): Added pkcs1-internal.h.
	* pkcs1-decrypt.c: Include new file.
	* pkcs1-sec-decrypt.c: Likewise.
	* rsa-decrypt-tr.c: Likewise.
	* rsa-sec-decrypt.c: Likewise.
	* testsuite/pkcs1-sec-decrypt-test.c: Likewise.

	* tools/nettle-pbkdf2.c: Add #define _GNU_SOURCE, needed for
	strdup with gcc -std=c89.
	* testsuite/ed25519-test.c: Add #define _GNU_SOURCE, needed for
	getline with gcc -std=c89.

	* rsa-sign-tr.c (sec_equal): Fix accidental use of C99 for loop.
	Reported by Andreas Gustafsson.
	* testsuite/rsa-sec-decrypt-test.c (test_main): Likewise.

2018-12-04  Niels Möller  <nisse@lysator.liu.se>

	* Released nettle-3.4.1.

2018-11-28  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: Update GMP check. Check for the function
	mpn_sec_div_r, available since GMP-6.0.0.

	* testsuite/rsa-encrypt-test.c (test_main): Fix allocation of
	decrypted storage. Update test of rsa_decrypt, to allow clobbering
	of all of the passed in message area.

	* pkcs1-decrypt.c (pkcs1_decrypt): Rewrite as a wrapper around
	_pkcs1_sec_decrypt_variable. Improves side-channel silence of the
	only caller, rsa_decrypt.

	* Makefile.in (DISTFILES): Add rsa-internal.h, needed for make
	dist. Patch from Simo Sorce.

	* rsa-internal.h: Add include of rsa.h.

2018-11-27  Niels Möller  <nisse@lysator.liu.se>

	* rsa-sec-compute-root.c (sec_mul, sec_mod_mul, sec_powm): New
	local helper functions, with their own itch functions.
	(_rsa_sec_compute_root_itch, _rsa_sec_compute_root): Rewrote to
	use helpers, for clarity.

2018-11-26  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/rsa-compute-root-test.c (generate_keypair): Simplify
	selection of psize and qsize, and fix so that qsize is used.
	(test_main): Add outer loop, to test with more than one key.
	Deallocate storage before exiting.

2018-11-25  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/rsa-compute-root-test.c: Renamed, from ...
	* testsuite/rsa-sec-compute-root-test.c: ... old name.

	* rsa.h (rsa_sec_compute_root_tr): Deleted declaration, moved to ...
	* rsa-internal.h (_rsa_sec_compute_root_tr): ... new location.
	* rsa-sign-tr.c (_rsa_sec_compute_root_tr): Renamed, from...
	(rsa_sec_compute_root_tr): ... old name. Updated callers.
	(cnd_mpn_zero): Use a volatile-declared mask variable.

	* testsuite/testutils.c (mpz_urandomb) [NETTLE_USE_MINI_GMP]: Fix
	masking of most significant bits.

	* rsa-decrypt-tr.c (rsa_decrypt_tr): Use
	NETTLE_OCTET_SIZE_TO_LIMB_SIZE.

	* testsuite/rsa-sec-decrypt-test.c (rsa_decrypt_for_test): Tweak
	valgrind marking, and document potential leakage of lowest and
	highest bits of p and q.

	* rsa-sec-compute-root.c (_rsa_sec_compute_root): Avoid calls to
	mpz_sizeinbase, since that potentially leaks most significant bits
	of private key parameters a and b.

	* testsuite/pkcs1-sec-decrypt-test.c (pkcs1_decrypt_for_test): Fix
	valgrind marking of return value.

	Merged below changes from Simo Sorce, to make RSA private key
	operations side-channel silent.

2018-11-08  Simo Sorce  <simo@redhat.com>

	* rsa-sign.c (rsa_compute_root) [!NETTLE_USE_MINI_GMP]: Use
	_rsa_sec_compute_root.

	* testsuite/rsa-sec-compute-root-test.c: Add more tests for new
	side-channel silent functions.

	* rsa-sign.c (rsa_private_key_prepare): Check that qn + cn >= pn,
	since that is required for one of the GMP calls in
	_rsa_sec_compute_root.

	* rsa-decrypt-tr.c: Switch to use side-channel silent functions.

	* pkcs1-sec-decrypt.c (_pkcs1_sec_decrypt_variable): New private
	function. Variable size version for backwards compatibility.

	* testsuite/rsa-sec-decrypt-test.c: Adds more tests.

	* rsa-sec-decrypt.c (rsa_sec_decrypt): New function.
	Fixed length side-channel silent version of rsa-decrypt.
	* testsuite/rsa-encrypt-test.c: add tests for the new fucntion.

	* testsuite/pkcs1-sec-decrypt-test.c: Adds tests for
	_pkcs1_sec_decrypt.

	* gmp-glue.c (mpn_get_base256): New function.

	* pkcs1-sec-decrypt.c (_pkcs1_sec_decrypt): New private function.
	Fixed length side-channel silent version of pkcs1-decrypt.

	* cnd-memcpy.c (cnd_memcpy): New function.
	* memops.h: Declare it.
	* testsuite/cnd-memcpy-test.c: New test case.

	* rsa-sign-tr.c (rsa_sec_compute_root_tr): New function that uses
	_rsa_sec_compute_root, as well as side-channel silent RSA
	blinding.
	(rsa_compute_root_tr) Rewritten as a wrapper around
	rsa_sec_compute_root_tr.
	(rsa_sec_blind, rsa_sec_unblind, sec_equal, rsa_sec_check_root)
	(cnd_mpn_zero): New helper functions.
	(rsa_sec_compute_root_tr) [NETTLE_USE_MINI_GMP]: Defined as a not
	side-channel silent wrapper around rsa_compute_root_tr, and the
	latter function left unchanged.

	* rsa-sec-compute-root.c (_rsa_sec_compute_root_itch)
	(_rsa_sec_compute_root): New file, new private functions.
	Side-channel silent version of rsa_compute_root.
	* rsa-internal.h: New header file with declarations.

	* gmp-glue.h (NETTLE_OCTET_SIZE_TO_LIMB_SIZE): New macro.

2018-11-24  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: Bump package version to 3.4.1.
	(LIBNETTLE_MINOR): Bump library version to 6.5.
	(LIBHOGWEED_MINOR): Bump library version to 4.5.

2018-11-17  Niels Möller  <nisse@lysator.liu.se>

	* examples/hogweed-benchmark.c (bench_rsa_verify)
	(bench_openssl_rsa_tr_init): New functions.
	(alg_list): Benchmark timing-resistant RSA functions, i.e.,
	including RSA blinding.
	(main): Increase width of first column, here and in other
	printouts.

2018-10-10  Dmitry Eremin-Solenikov  <dbaryshkov@gmail.com>

	* ctr16.c (_ctr_crypt16): Bugfix for the src == dst case, when
	processing more than on full block of size CTR_BUFFER_LIMIT, src
	and dst arguments to memxor3 were not properly updated.

2018-10-10  Niels Möller  <nisse@lysator.liu.se>

	* aes-set-encrypt-key.c: Add missing include of stdlib.h.
	* des-compat.c: Likewise.

2018-09-13  Niels Möller  <nisse@lysator.liu.se>

	* rsa-keygen.c (rsa_generate_keypair): Delete unlikely and
	redundant check for p == q.

2018-08-09  Niels Möller  <nisse@lysator.liu.se>

	* rsa-internal.h (_rsa_blind, _rsa_unblind): Mark with
	_NETTLE_ATTRIBUTE_DEPRECATED.

	* nettle-types.h (_NETTLE_ATTRIBUTE_PURE)
	(_NETTLE_ATTRIBUTE_DEPRECATED): New macros, for gcc and
	lookalikes.
	* ecc-curve.h: Include nettle-types.h, and use
	_NETTLE_ATTRIBUTE_PURE instead of local definition.
	* nettle-meta.h: Use _NETTLE_ATTRIBUTE_PURE, instead of explicit
	#ifdefs.

	* aes.h: Mark functions using struct aes_ctx interface as
	deprecated. Add #undef _NETTLE_ATTRIBUTE_DEPRECATED in files where
	the functions are implemented or tested.
	* gcm.h: Similarly mark functions using gcm_aes_ctx as deprecated.

	* nettle-internal.c (des_set_key_wrapper, des3_set_key_wrapper)
	(blowfish128_set_key_wrapper): Wrapper functions, to avoid cast
	between incompatible function types (which gcc-8 warns about).
	Wrappers are expected to compile to a single jmp instruction.

	* des-compat.c (des_compat_des3_encrypt)
	(des_compat_des3_decrypt): Change length argument type to size_t.

2018-08-08  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo (Compatibility): New section on ABI and API
	compatibility.

2018-07-25  Dmitry Eremin-Solenikov  <dbaryshkov@gmail.com>

	* examples/nettle-benchmark.c: Add benchmarking for HMAC functions.

2018-07-13  Niels Möller  <nisse@lysator.liu.se>

	* examples/eratosthenes.c (vector_alloc): Add assert related to
	overflow in the size calculation. Fixes a corner case identified
	by static analysis.
	(vector_init): Analogous assert.

2018-07-12  Niels Möller  <nisse@lysator.liu.se>

	* examples/eratosthenes.c (main): Don't allocate bitmap storage
	for limit == 2 (early exit), closing memory leak at exit.
	(main): Fix handling of short -q option.

	* eccdata.c (output_curve): Replace mpz_init_set_ui by mpz_set_ui,
	to fix memory leak.
	(ecc_curve_clear): New function.
	(main): Call it, to deallocate storage before exit.

2018-07-08  Niels Möller  <nisse@lysator.liu.se>

	* fat-x86_64.c (fat_init): Fix setup for nettle_sha1_compress.
	* x86_64/fat/sha1-compress.asm: Add leading underscore to symbol name.
	* x86_64/fat/sha1-compress-2.asm: Likewise.

2018-07-07  Niels Möller  <nisse@lysator.liu.se>

	From Nikos Mavrogiannopoulos.
	* sha1-compress.c (nettle_sha1_compress): Renamed, and promoted to
	public function, since there's known appliation usage (filezilla).
	* sha1.h (_nettle_sha1_compress): Old name, now a preprocessor
	alias for the new name.
	* md5-compress.c (nettle_md5_compress): Similarly renamed (used by
	sogo).
	* md5.h (_nettle_md5_compress): Old name,, now a preprocessor
	alias for the new name.

	* chacha-internal.h, dsa-internal.h, eddsa-internal.h:
	* hogweed-internal.h, ripemd160-internal.h, rsa-internal.h:
	* salsa20-internal.h, sha2-internal.h, sha3-internal.h:
	* umac-internal.h: Internal declarations moved to new header
	files, which are not installed..
	* Makefile.in (DISTFILES): Added above files.

	* libnettle.map.in: Use a different symbol version for _nettle_*
	symbols, depending on the minor release. This marks these symbols
	explicitly not part of the public Nettle ABI.
	* libhogweed.map.in: Analogous change.

2018-06-17  Niels Möller  <nisse@lysator.liu.se>

	* aclocal.m4 (NETTLE_CHECK_IFUNC): Fix quoting. Patch contributed
	by Dmitry Eremin-Solenikov.

	* testsuite/symbols-test: Exclude ____chkstk_darwin symbols,
	produced by Apple's Xcode 10 compiler. Patch contributed by
	Dominyk Tiller.

2018-03-25  Niels Möller  <nisse@lysator.liu.se>

	From Michael Weiser.
	* configure.ac (ASM_WORDS_BIGENDIAN): New substution, set from AC_C_BIGENDIAN.
	* config.m4.in: Use it to set WORDS_BIGENDIAN.
	* asm.m4 (IF_BE, IF_LE): New macros.
	* arm/memxor.asm: Support big-endian ARM.
	* arm/memxor3.asm: Likewise.
	* arm/neon/chacha-core-internal.asm: Likewise.
	* arm/neon/salsa20-core-internal.asm: Likewise.
	* arm/neon/umac-nh.asm: Likewise.
	* arm/v6/sha1-compress.asm: Likewise.
	* arm/v6/sha256-compress.asm: Likewise.
	* arm/README: Document big-endian considerations.

2018-03-17  Niels Möller  <nisse@lysator.liu.se>

	Discourage direct access to data symbols with non-public size.
	Direct references to these symbols may result in copy-relocations
	like R_X86_64_COPY, which make the symbol size leak into the ABI.
	* ecc-curve.h (_nettle_secp_192r1, _nettle_secp_224r1)
	(_nettle_secp_256r1, _nettle_secp_384r1, _nettle_secp_521r1): Add
	leading underscore on these data symbols.

	* nettle-meta.h (_nettle_ciphers, _nettle_hashes, _nettle_aeads)
	(_nettle_armors): Add leading underscore on these data symbols.
	Update all internal use. Macros without leading underscore remain,
	and expand to access via accessor functions nettle_get_ciphers and
	similar.

2018-03-10  Niels Möller  <nisse@lysator.liu.se>

	* eccdata.c (ecc_table_size): New helper function.
	(ecc_pippenger_precompute): Display warning for poor parameters.

	* eccparams.c (main): New program, to list parameter alternatives
	for Pippenger's algorithm.

	* Makefile.in: Tweak parameters for ecc tables.
	(ecc-192.h): Change parameters from k = 7, c = 6 to k = 8, c = 6.
	Reduces table size from 15 KB to 12 KB. Modest speedup, appr. 3%
	for ecdsa signatures.
	(ecc-224.h): Change parameters from k = 12, c = 6 to k = 16, c =
	7. Table size unchanged (14 KB in 32-bit platforms, 18 KB on
	64-bit platforms. Minor speedup, appr. 1% for ecdsa signatures.
	(ecc-256.h): Change parameters from k = 14, c = 6 to k = 11, c =
	6. Table size unchanged, 16 KB. 14% speedup for ecdsa signatures.
	(ecc-384.h): Changed parameters from k = 41, c = 6 to k = 32, c =
	6. Table size unchanged. 12% speedup for ecdsa signatures.
	(ecc-521.h): Changed parameters from k = 56, c = 6 to k 44, c = 6.
	Table size unchanged (17 KB on 32-bit platforms, 18 KB on 64-bit
	platforms). 15% speedup for ecdsa signatures.
	(ecc-255.h): Change parameters from k = 14, c = 6 to k = 11, c =
	6. Table size unchanged, 16 KB. 24% speedup for eddsa signatures.

2018-03-14  Niels Möller  <nisse@lysator.liu.se>

	Merge sha256 code using the x86_64 sha_ni instructions, starting
	2018-02-21.

2018-03-11  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/fat/sha256-compress.asm: New file.
	* x86_64/fat/sha256-compress-2.asm: New file.
	* fat-x86_64.c (fat_init): Select plain x86_64 assembly version or
	sha_ni version for sha256_compress.

2018-02-21  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/sha_ni/sha256-compress.asm: New implementation using sha_ni
	instructions.

2018-02-20  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/cmac-test.c (test_cmac_hash): Deallocate ctx properly.

2018-02-19  Niels Möller  <nisse@lysator.liu.se>

	Mostly aesthetic changes. Besides indentation:
	* cmac.h (struct cmac128): Rename, to cmac128_ctx.
	(CMAC128_CTX): Rename first member from data to ctx.

	* cmac.c: Use const void * as the type for cipher arguments.
	(block_mulx): Un-inline.
	(cmac128_set_key): Make a constant function local.

	* testsuite/cmac-test.c: Delete local typedefs.

2018-02-19  Nikos Mavrogiannopoulos  <nmav@redhat.com>

	Add support for CMAC.
	* cmac.h: New file.
	(struct cmac128): New struct.
	* cmac.c (block_mulx, cmac128_set_key, cmac128_update)
	(cmac128_digest): New file, new functions.
	* cmac-aes128.c (cmac_aes128_set_key, cmac_aes128_update)
	(cmac_aes128_digest): New file, new functions.
	* cmac-aes256.c (cmac_aes256_set_key, cmac_aes256_update)
	(cmac_aes256_digest): New file, new functions.
	* Makefile.in (nettle_SOURCES): Added cmac.c cmac-aes128.c cmac-aes256.c.
	(HEADERS): Added cmac.h.

	* testsuite/cmac-test.c: New tests.
	* testsuite/Makefile.in (TS_NETTLE_SOURCES): Add cmac-test.c.

	* examples/nettle-benchmark.c (time_cmac): New function.
	(main): Use it.

	* nettle.texinfo: Document CMAC.

2018-02-20  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/cbc-test.c (test_cbc_bulk): Use struct
	aes256_ctx, instead of the deprecated struct aes_ctx.
	* testsuite/cfb-test.c (test_cfb_bulk): Likewise.
	* examples/rsa-session.h (struct rsa_session): Likewise.
	* examples/rsa-encrypt.c (rsa_session_set_encrypt_key)
	(process_file): Use aes256_* functions.
	* examples/rsa-decrypt.c (rsa_session_set_decrypt_key)
	(process_file): Likewise.

2018-02-19  Niels Möller  <nisse@lysator.liu.se>

	* nettle-internal.h: Include sha3.h, needed for the definition of
	NETTLE_MAX_HASH_CONTEXT_SIZE.
	(TMP_DECL_ALIGN, TMP_ALLOC_ALIGN): New macros, to support
	allocation of context structs with alignment requirements.
	[!HAVE_ALLOCA]: Also use assert, rather than calling abort
	directly.

	* pss.c (pss_encode_mgf1, pss_verify_mgf1): Use new macros.
	* pss-mgf1.c (pss_mgf1): Likewise.

2018-02-18  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/Makefile.in (TS_NETTLE_SOURCES): Moved pss-mgf1-test.c...
	(TS_HOGWEED_SOURCES): ...to here. Fixes link failure in builds
	without public-key support.

2018-02-18  Dmitry Eremin-Solenikov  <dbaryshkov@gmail.com>

	* examples/nettle-openssl.c): Move expressions with side effects
	out of asserts.

2018-02-17  Dmitry Eremin-Solenikov  <dbaryshkov@gmail.com>

	(openssl_evp_set_encrypt_key, openssl_evp_set_decrypt_key): Use
	EVP_CipherInit_ex.
	* examples/nettle-openssl.c (nettle_openssl_gcm_aes128)
	(nettle_openssl_gcm_aes192, nettle_openssl_gcm_aes256): New aead
	algorithms, for benchmarking purposes, and supporting wrapper functions.
	* nettle-internal.h: Corresponding declarations.
	* examples/nettle-benchmark.c (main): Include openssl's gcm aes in
	benchmark.

2018-02-16  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Improved index entries.
	(Cipher functions): Update CAST128/CAST5 docs. Inconsistencies
	spotted by Henrik Rindlöw.

2018-02-10  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: New configure option --enable-x86-sha-ni.

2018-02-07  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/fat/sha1-compress.asm: New file.
	* x86_64/fat/sha1-compress-2.asm: New file.
	* fat-x86_64.c (fat_init): Select plain x86_64 assembly version or
	sha_ni version for sha1_compress.

2018-02-05  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/sha_ni/sha1-compress.asm: New implementation using sha_ni
	instructions.

	* fat-x86_64.c (get_x86_features): Check for sha_ni extension.

	* x86_64/fat/cpuid.asm: Clear %ecx input to cpuid instruction.

2018-02-01  Nikos Mavrogiannopoulos  <nmav@redhat.com>

	* gcm.c (gcm_fill): New function, for use with _ctr_crypt16.
	(gcm_encrypt, gcm_decrypt): Use _ctr_crypt16. 50% speedup of
	gcm_aes128, benchmarked on x86_64 with aesni instructions.

2018-02-01  Niels Möller  <nisse@lysator.liu.se>

	Based on a patch contributed by Nikos Mavrogiannopoulos.
	* ctr16.c (_ctr_crypt16): New file, renamed and generalized
	function. New function pointer argument, used to fill a block with
	counter values. Use nettle_block16 * as the type for the buffer to
	be filled. Always process any final and partial block, and return
	no value.
	* ctr.c (ctr_crypt): ... previous, replaced, function.
	(ctr_fill16): Updated to new argument type.
	(ctr_crypt): Return immediately after using _ctr_crypt16.

	* ctr-internal.h: New file, declaring _ctr_crypt16.
	(nettle_fill16_func): New function typedef.

	* Makefile.in (nettle_SOURCES): Added ctr16.c.
	(DISTFILES): Added ctr-internal.h.

2018-01-30  Niels Möller  <nisse@lysator.liu.se>

	* Makefile.in (clean-here): Don't delete desdata.stamp.

2018-01-24  Jay Foad  <jay.foad@gmail.com>

	* Makefile.in (TARGETS): Delete dependencies on aesdata, desdata,
	twofishdata, shadata and gcmdata. They are not needed for a normal
	build.
	(clean-here): Explicitly delete of above files.
	(desdata.stamp): New stamp target, to avoid building desdata twice
	in a parallell build.

2018-01-23  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac (asm_path): Recognize "x86", in addition to "i?86",
	for 32-bit x86 processors. Reportedly needed for x86 android builds.

2018-01-20  Niels Möller  <nisse@lysator.liu.se>

	CFB8 support, contributed by Dmitry Eremin-Solenikov.
	* cfb.c (cfb8_encrypt, cfb8_decrypt): New functions.
	* cfb.h: Declare them.
	(CFB8_ENCRYPT, CFB8_DECRYPT): New macros.
	* testsuite/cfb-test.c: New tests for CFB8.
	* nettle.texinfo (CFB and CFB8): Documentation.

2018-01-16  Niels Möller  <nisse@lysator.liu.se>

	* tools/pkcs1-conv.c (convert_file): Add missing break statements.

2018-01-09  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/testutils.c (test_cipher_ctr): Test operations with
	shorter sizes.

	* testsuite/ctr-test.c: Additional unofficial test vectors, to
	exercise carry propagation in the counter, and block size
	different from 16.

2018-01-08  Niels Möller  <nisse@lysator.liu.se>

	* ctr.c (ctr_crypt16): New function, with optimizations specific
	to 16-byte block size.
	(ctr_fill16): New helper function, definition depending on
	WORDS_BIGENDIAN, and little endian version requiring
	HAVE_BUILTIN_BSWAP64.
	(ctr_crypt): Use ctr_crypt16, when appropriate.

	* nettle-types.h (union nettle_block16): Add uint64_t field.

	* configure.ac: Check for __builtin_bswap64, define
	HAVE_BUILTIN_BSWAP64 if available.

	* ctr.c (ctr_fill): New function. Use in ctr_crypt.

	* ctr.c (ctr_crypt): For in-place operation, increase max buffer
	size from 4 blocks to 512 bytes, similarly to CBC and CFB.
	Improves in-place aes128 CTR performance by 25% on x86_64.

	* examples/nettle-benchmark.c (time_cipher): Benchmark in-place
	operation separately, for cbc_decrypt and ctr_crypt.

	* cbc.c (cbc_decrypt): For in-place operation (src == dst case),
	eliminate use of src variable.
	* cfb.c (cfb_decrypt): Likewise.
	* gcm.c (gcm_crypt): Likewise, and replace one memxor3 by memxor.

2018-01-03  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/aesni/aes-encrypt-internal.asm: Read subkeys into xmm
	registers before the block loop, and completely unroll the round
	loop.
	* x86_64/aesni/aes-decrypt-internal.asm: Likewise.

2017-11-19  Niels Möller  <nisse@lysator.liu.se>

	* Released nettle-3.4.

2017-11-12  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: Update check of GMP_NUMB_BITS declaration in
	assembly files. Was broken by rename of configure variable
	GMP_NUMB_BITS --> NUMB_BITS.

2017-11-11  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Document nettle_get_hashes, nettle_get_ciphers
	and nettle_get_aeads, and replace nettle_secp_256r1 by
	nettle_get_secp_256r1. Update version numbers. Delete ancient
	setting of ispell-skip-region-alist as an emacs file-local
	variable.

2017-11-08  Niels Möller  <nisse@lysator.liu.se>

	* ecc-curve.h (nettle_secp_192r1, nettle_secp_224r1)
	(nettle_secp_256r1, nettle_secp_384r1, nettle_secp_521r1): Delete
	macro wrappers, partially reverting below 2017-04-09 change. They
	didn't work at all for applications that only see a forward
	declaration of struct ecc_curve. Instead, we will have to make an
	ABI and API break and delete these symbols, when the size of
	struct ecc_curve is increased.

2017-11-05  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac Bump package version to 3.4.
	(LIBNETTLE_MINOR): Bump library version to 6.4.
	(LIBHOGWEED_MINOR): Bump library version to 4.4.

2017-10-23  Niels Möller  <nisse@lysator.liu.se>

	* examples/Makefile.in (check): Also set DYLD_LIBRARY_PATH in the
	environment, to support Mac OSX shared libraries.
	* testsuite/Makefile.in (LD_LIBRARY_PATH): Likewise.

2017-10-23  Niels Möller  <nisse@lysator.liu.se>

	Merge API fixes, starting at 2017-01-12.

2017-04-09  Niels Möller  <nisse@lysator.liu.se>

	* ecc-curve.h (nettle_get_secp_192r1, nettle_get_secp_224r1)
	(nettle_get_secp_256r1, nettle_get_secp_384r1)
	(nettle_get_secp_521r1): New functions, returning a pointer to
	corresponding structure.
	(nettle_secp_192r1, nettle_secp_224r1, nettle_secp_256r1)
	(nettle_secp_384r1, nettle_secp_521r1): Redefined as macros,
	calling the corresponding function.

	* nettle-meta.h (nettle_ciphers, nettle_aeads, nettle_armors): New
	macros, analogous to below change to nettle_hashes.

	* nettle-meta-ciphers.c (nettle_get_ciphers): New function.

	* nettle-meta-aeads.c (nettle_get_aeads): New function.

	* nettle-meta-armors.c (nettle_get_armors): New function.

2017-01-12  Niels Möller  <nisse@lysator.liu.se>

	* tools/nettle-hash.c (find_algorithm): Deleted function.
	(main): Replaced by call to nettle_lookup_hash.

	* testsuite/meta-hash-test.c (test_main): Use nettle_lookup_hash.

	* nettle-meta.h (nettle_hashes): New macro, expanding to a call to
	nettle_get_hashes. Direct access to the array causes the array
	size to leak into the ABI, since a plain un-relocatable executable
	linking with libnettle.so gets copy relocations for any referenced
	data items in the shared library.

	* nettle-meta-hashes.c (nettle_get_hashes): New function.

2017-10-16  Niels Möller  <nisse@lysator.liu.se>

	CFB support, contributed by Dmitry Eremin-Solenikov.
	* cfb.c (cfb_encrypt, cfb_decrypt): New file, new functions.
	* cfb.h: New header file.
	(CFB_CTX, CFB_SET_IV, CFB_ENCRYPT, CFB_DECRYPT): New macros.
	* Makefile.in (nettle_SOURCES): Add cfb.c.
	(HEADERS): Add cfb.h.
	* testsuite/cfb-test.c: New test case.
	* testsuite/testutils.c (test_cipher_cfb): New function.
	* nettle.texinfo (CFB): Documentation.

2017-10-16  Niels Möller  <nisse@lysator.liu.se>

	* aclocal.m4 (GMP_PROG_CC_FOR_BUILD): Add -g when compiling with
	gcc.

2017-09-27  Niels Möller  <nisse@lysator.liu.se>

	Merged armor-signedness branch, starting 2017-08-27.

2017-09-24  Niels Möller  <nisse@lysator.liu.se>

	* tools/pkcs1-conv.c (base64_decode_in_place): New helper
	function.
	(decode_base64): Use it.

	* sexp-transport-format.c (base64_encode_in_place): New helper
	function.
	(sexp_transport_vformat): Use it.

	* testsuite/base64-test.c (test_fuzz_once): Update to use char
	type where appropriate.
	(test_main): Use helper functions base64_encode_in_place and
	base64_decode_in_place (copied to this file).

	* testsuite/testutils.c (tstring_data): Use uint8_t for data
	argument.
	* testsuite/testutils.h (SDATA): Use US macro to cast data
	argument.

2017-08-27  Niels Möller  <nisse@lysator.liu.se>

	* base64-encode.c (base64_encode_raw, base64_encode_group)
	(base64_encode_single, base64_encode_update)
	(base64_encode_final): Change type of destination to char *.
	* base16-encode.c (base16_encode_single, base16_encode_update):
	Likewise.
	* base64-decode.c (base64_decode_single, base64_decode_update):
	Change type of source argument to const char *. Update (almost)
	all callers.
	* base16-decode.c (base16_decode_single, base16_decode_update):
	Likewise.
	* nettle-types.h (nettle_armor_encode_update_func)
	(nettle_armor_encode_final_func, nettle_armor_decode_update_func):
	Corresponding updates to typedefs.

2017-09-14  Niels Möller  <nisse@lysator.liu.se>

	* hkdf.c: Delete unneeded includes. Use Nettle licensing notice.
	* hkdf.h: Include only nettle-types.h, not nettle-meta.h.

	* ecc-mod.c (ecc_mod): Workaround to silence a false positive from
	the clang static analyzer.

2017-09-12  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/testutils.h (mpn_zero_p): Avoid redefining mpn_zero_p
	when building with mini-gmp. Since the mini-gmp update, this
	function is defined by mini-gmp, causing link errors if nettle is
	configured with --enable-mini-gmp --disable-shared. Reported by
	Tim Rühsen.

2017-09-09  Daiki Ueno  <dueno@redhat.com>

	* testsuite/ecc-mul-g-test.c (test_main): Fixed mpn_cmp call.
	* testsuite/ecc-mul-a-test.c (test_main): Likewise.
	* eccdata.c (ecc_point_out): Write to given stream, instead of
	stderr.
	* eccdata.c (output_curve): In curve448, the bit size of the order
	is slightly smaller than the one of p's. Adjust ecc_Bmodq_shifted
	accordingly.

2017-09-09  Niels Möller  <nisse@lysator.liu.se>

	* mini-gmp.c: Updated mini-gmp from the gmp repository, latest
	change from 2017-07-23.
	* mini-gmp.h: Likewise.

2017-09-06  Niels Möller  <nisse@lysator.liu.se>

	* hkdf.c (hkdf_expand): Eliminate a (signed) ssize_t variable, use
	break rather than return at loop termination.

2017-09-06  Niels Möller  <nisse@lysator.liu.se>

	HKDF implementation, contributed by Nikos Mavrogiannopoulos.
	* hkdf.c (hkdf_extract, hkdf_expand): New file, new functions.
	* hkdf.h: New file.
	* Makefile.in (nettle_SOURCES): Add hkdf.c.
	(HEADERS): Add hkdf.h.
	* testsuite/hkdf-test.c: Tests for hkdf-sha256 and hkdf-sha1.
	* testsuite/Makefile.in (TS_NETTLE_SOURCES): Added hkdf-test.c.
	* nettle.texinfo (Key derivation functions): Document HKDF.

2017-09-04  Andreas Schneider  <asn@samba.org>

	* fat-arm.c: Add missing define for _GNU_SOURCE.

2017-08-27  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac (GMP_NUMB_BITS): Set to dummy value "n/a" in
	mini-gmp builds.
	(NUMB_BITS): New substituted variable which always holds the
	configured value.
	* Makefile.in (GMP_NUMB_BITS): Renamed variable...
	(NUMB_BITS): ...new name
	* config.make.in: Update corresponding substitution.

2017-08-26  Niels Möller  <nisse@lysator.liu.se>

	* ecc-mod-inv.c (ecc_mod_inv): Add missing assert. Fixes a
	"dead increment" warning from the clang static analyzer.

2017-08-26  Niels Möller  <nisse@lysator.liu.se>

	* examples/nettle-openssl.c (struct openssl_cipher_ctx): New
	struct. Use everywhere, instead of typing EVP_CIPHER_CTX pointers
	directly.

	* configure.ac: Update openssl-related tests. Checks for
	cipher-specific headers are replaced by a check for openssl/evp.h,
	and the check for the BF_ecb_encrypt function is replaced by a
	check for EVP_CIPHER_CTX_new.

2017-08-03  Daniel P. Berrange  <berrange@redhat.com>

	* examples/nettle-openssl.c: Rewritten to use openssl's EVP APIs.
	The older cipher-specific functions always use openssl's generic
	software implementation, while the EVP functions enables
	platform-specific code, e.g., using the x86 AES-NI instructions.
	(nettle_openssl_init): New function.

2017-07-18  Niels Möller  <nisse@lysator.liu.se>

	* ecc-add-eh.c (ecc_add_eh): Fix in-place operation by reordering
	two multiplies. Previously, in-place operation resulted in an
	invalid call to mpn_mul with overlapping operands. Reported by
	Sergei Trofimovich.

2017-06-09  Niels Möller  <nisse@lysator.liu.se>

	* pss.c (pss_verify_mgf1): Check for m being too large, fixing an
	assertion failure for certain invalid signatures. Based on a patch
	contributed by Daiki Ueno.

	* testsuite/rsa-pss-sign-tr-test.c (test_main): Add test case
	contributed by Daiki Ueno. Problem originally found by oss-fuzz,
	see https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2132.
	That problem report is currently embargoed, but will hopefully be
	public in a month or two.

2017-05-23  Niels Möller  <nisse@lysator.liu.se>

	Rework the previous change, which had the unintended effect of
	always regenerating .test-rules.make after ./configure is run.
	* testsuite/Makefile.in (test-rules.stamp): New stamp file target,
	depend on Makefile.in, and run $(MAKE) test-rules.
	(.test-rules.make): Add a level of indirection, by depending on
	test-rules.stamp.

2017-05-20  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/Makefile.in (test-rules): Use $(srddir)/-prefix for
	.test-rules.make target, and change dependency from Makefile.in to
	Makefile.

2017-05-17  Nikos Mavrogiannopoulos  <nmav@redhat.com>

	* testsuite/Makefile.in: Ensure .test-rules.make is regenerated
	when Makefile.in is modified.

2017-04-09  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/dlopen-test.c (main): Call dlclose, to fix memory leak
	on success.

	* testsuite/pss-test.c: Delete magic to let valgrind to check if
	pss_encode_mgf1 is side-channel silent with respect to the salt
	and digest inputs. It turns out that the most significant bits of
	the padded bignum, and hence its size, depends on these inputs.
	Which results in a data-dependent branch in the normalization code
	of at the end of gmp's mpz_import.

2017-04-04  Niels Möller  <nisse@lysator.liu.se>

	* pss.c (pss_verify_mgf1): Use const for input mpz_t argument.
	(pss_encode_mgf1): Avoid unnecessary memset and xor operations.

	Merged RSA-PSS support, contributed by Daiki Ueno.
	* pss-mgf1.h, pss.h: New header files.
	* pss-mgf1.c (pss_mgf1): New file and function.
	* pss.c (pss_encode_mgf1, pss_verify_mgf1): New file and
	functions.
	* rsa-verify.c (_rsa_verify_recover): New function.
	* rsa-pss-sha256-sign-tr.c: (rsa_pss_sha256_sign_digest_tr): New
	file and function.
	* rsa-pss-sha256-verify.c (rsa_pss_sha256_verify_digest): New
	file and function.
	* rsa-pss-sha512-sign-tr.c (rsa_pss_sha384_sign_digest_tr)
	(rsa_pss_sha512_sign_digest_tr): New file and functions.
	* rsa-pss-sha512-verify.c (rsa_pss_sha384_verify_digest)
	(rsa_pss_sha512_verify_digest): New file and functions.
	* rsa.h: Prototypes for new functions.
	* testsuite/rsa-pss-sign-tr-test.c: New test case.
	* testsuite/pss-test.c: New test case.
	* testsuite/pss-mgf1-test.c: New test case.
	* Makefile.in, testsuite/Makefile.in: Added new files.
	* nettle.texinfo: Documentation of rsa-pss functions.

2017-03-20  Niels Möller  <nisse@lysator.liu.se>

	* nettle-internal.h (NETTLE_MAX_HASH_CONTEXT_SIZE): New constant.
	* testsuite/meta-hash-test.c (test_main): Add sanity check for
	NETTLE_MAX_HASH_CONTEXT_SIZE.

	* tools/nettle-hash.c (list_algorithms): Also display the internal
	context size.

2017-01-03  Nikos Mavrogiannopoulos <nmav@redhat.com>

	* ecdsa-verify.c (ecdsa_verify): Eliminated memory leak on error
	path.

2016-10-10  Niels Möller  <nisse@lysator.liu.se>

	* write-be32.c (_nettle_write_be32): Use const for source argument.
	* write-le32.c (_nettle_write_le32): Likewise.
	* write-le64.c (_nettle_write_le64): Likewise.
	* nettle-write.h: Update prototypes.

2016-10-01  Niels Möller  <nisse@lysator.liu.se>

	* Released nettle-3.3.

2016-09-13  Niels Möller  <nisse@lysator.liu.se>

	* nettle-meta-hashes.c (nettle_hashes): Added SHA3 hashes.
	Reported missing by Thomas Walter.
	* testsuite/meta-hash-test.c: Update test accordingly.

2016-09-07  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo (Elliptic curves): Split into sub-nodes.
	(Miscellaneous functions): Document memeql_sec.
	* NEWS: Mention memeql_sec.

2016-09-06  Niels Möller  <nisse@lysator.liu.se>

	* NEWS: Update for 3.3.

	* configure.ac: Bump package version to 3.3.
	(LIBNETTLE_MINOR): Bump library version to 6.3.
	(LIBHOGWEED_MINOR): Bump library version to 4.3.

2016-09-05  Niels Möller  <nisse@lysator.liu.se>

	* curve25519.h (NETTLE_CURVE25519_RFC7748): New preprocessor
	constant.
	* nettle.texinfo: Document it.

2016-09-03  Niels Möller  <nisse@lysator.liu.se>

	* config.make.in (.SUFFIXES): Delete no longer used .p$(OBJEXT).

	* sexp.h (TOKEN_CHAR): Delete macro and declaration of
	sexp_token_chars. They belong in tools/misc.h, not here.

	* examples/ecc-benchmark.c (die): Deleted unused function.

	* testsuite/testutils.h (US): New macro, for unsigned string
	literals.
	(LDATA): Use the US macro, to eliminate pointer signedness
	warnings.

	* testsuite/eddsa-verify-test.c (test_eddsa): Use LDATA.
	* testsuite/pbkdf2-test.c (test_main): Likewise.
	* testsuite/pkcs1-test.c (test_main): Likewise.

	* testsuite/md5-compat-test.c (test_main): Use US macro.

	* testsuite/sexp-test.c (test_main): Use const char * for assoc
	keys. Overlooked in 2016-08-16 change.

	* testsuite/yarrow-test.c (test_main): Fix pointer
	signednesss warnings.
	* testsuite/sexp-format-test.c (test_main): Likewise.
	* testsuite/rsa-encrypt-test.c (test_main): Likewise.
	* tools/nettle-lfib-stream.c (main): Likewise.
	* tools/output.c (sexp_put_string): Likewise.

	* testsuite/testutils.c (test_armor): Change ascii argument to
	const char *.
	* testsuite/base16-test.c (test_main): Use LDATA for the non-ascii
	argument to test_armor.
	* testsuite/base64-test.c (test_main): Likewise.

	* tools/nettle-pbkdf2.c (main): Fix some pointer signedness warning.
	* tools/nettle-hash.c (hash_file): Likewise.

	* examples/rsa-decrypt.c (process_file): Use memeql_sec to check
	the digest.

	* memeql-sec.c (memeql_sec): New public function, moved from...
	* ccm.c (memeql_sec): ... previous location.

	* memops.h: New header file, generalizing memxor.h.

	* testsuite/memeql-test.c (test_main): New test case.
	(memeql_sec_for_test): Wrapper to get valgrind to check for
	side-channel silence.

2016-08-29  Niels Möller  <nisse@lysator.liu.se>

	* sexp-format.c (strlen_u8): New helper function.
	(sexp_vformat): Use uint8_t * for strings instead of char *.

2016-08-16  Niels Möller  <nisse@lysator.liu.se>

	* examples/io.c (hash_file): Use uint8_t for buffer.

	* sexp.c (sexp_iterator_check_type, sexp_iterator_check_types)
	(sexp_iterator_assoc): Use const char * for caller's expression
	types. Updated all callers.

	* rsa2openpgp.c (rsa_keypair_to_openpgp): Added cast to const
	uint8_t *.

	* pgp-encode.c (write_string): New helper function, replacing...
	(WRITE): ... deleted macro.

	* examples/io.c (write_data): Renamed, and use const void * for
	the input data. Updated all callers.
	(write_string): ... old name.
	(write_file): Use const void * for the input data.

2016-08-05  Niels Möller  <nisse@lysator.liu.se>

	* examples/hogweed-benchmark.c: Use uint8_t for curve25519 values.
	(bench_rsa_init): Use unsigned char for sexp strings.
	(bench_dsa_init): Likewise.
	(hash_string): Delete length argument, calling strlen instead.
	Cast string to const uint8_t *. Updated callers.

	* examples/io.c (read_file): Use size_t for sizes, and uint8_t for
	the contents.

2016-08-04  Niels Möller  <nisse@lysator.liu.se>

	* dsa-sign.c (dsa_sign): Return failure if p is even, so that an
	invalid key doesn't result in a crash inside mpz_powm_sec.

	* rsa-sign-tr.c (rsa_compute_root_tr): Return failure if any of p,
	q or n is even, to avoid crashing inside mpz_powm_sec. Invalid
	keys with even modulo are rejected by rsa_public_key_prepare and
	rsa_private_key_prepare, but some applications, notably gnutls,
	don't use them.

2016-07-31  Niels Möller  <nisse@lysator.liu.se>

	* rsa.c (_rsa_check_size): Check that n is odd. Otherwise, using
	an invalid key may crash in mpz_powm_sec. Problem reported by
	Hanno Böck.

2016-07-13  Niels Möller  <nisse@lysator.liu.se>

	* bignum.c (nettle_mpz_from_octets): Unconditionally use
	mpz_import.
	* gmp-glue.c (mpn_copyd, mpn_copyi, mpn_zero): Deleted
	compatibility definitions for older versions of GMP.
	* gmp-glue.h (mpn_sqr): Deleted compatibility definition.
	* testsuite/testutils.c (mpz_combit): Deleted compatibility
	definition.

2016-07-12  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: Check for mpz_powm_sec, and require GMP-5.0 or
	later.
	* bignum.h (mpz_powm_sec): Fall back to plain mpz_powm for
	mini-gmp build.
	* dsa-sign.c (dsa_sign): Use mpz_powm_sec.
	* rsa-sign.c (rsa_compute_root): Likewise.
	* rsa-sign-tr.c (rsa_blind, rsa_compute_root_tr): Likewise.
	* rsa-blind.c (_rsa_blind): Likewise.

2016-05-02  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Update Curve25519 documentation.

	* testsuite/curve25519-dh-test.c: Test that inputs bits which must
	be ignored really are ignored.

2016-04-25  Niels Möller  <nisse@lysator.liu.se>

	* curve25519-mul.c (curve25519_mul): Ignore top bit of the input x
	coordinate, as required by RFC 7748.

2016-03-30  Niels Möller  <nisse@lysator.liu.se>

	From Nikos Mavrogiannopoulos.
	* configure.ac: Change dll names to follow the libtool convention
	with only major version number in the name.

2016-03-15  Niels Möller  <nisse@lysator.liu.se>

	* twofish.c (gf_multiply): Change return value to uint32_t, to
	make shifting of the return value well defined, without any type
	casts. Fixes an undefined shift in compute_s, reported by Nikos
	Mavrogiannopoulos.
	(h_byte): Deleted type casts.

	* blowfish.c (blowfish_encrypt, blowfish_decrypt): Use READ_UINT32
	macro. Fixes an undefined shift, reported by Nikos
	Mavrogiannopoulos.

	From Nikos Mavrogiannopoulos.
	* configure.ac (HOGWEED_EXTRA_SYMBOLS): Add "mp_*", when building
	with mini-gmp.
	* des.c (des_weak_p): Check that the hash value is in the proper
	range before using it. Fixes an out-of-bounds read.

2016-03-14  Niels Möller  <nisse@lysator.liu.se>

	* getopt.c (_getopt_internal_r): Fix c99-ism, move declarations to
	top of block. Reported by Henrik Grubbström.

2016-02-16  Niels Möller  <nisse@lysator.liu.se>

	* tools/input.c (sexp_get_string_length): Process advanced string
	syntax only when in advanced mode. Fixes an assertion failure
	reported by Hanno Böck, for input where advanced syntax is
	improperly wrapped inside transport syntax.

	* tools/parse.c (sexp_parse): Fail with an error message for
	unexpected ']' characters. Fixes crash reported by Hanno Böck.
	Also handle SEXP_DISPLAY (internal error) explicitly, without a
	default clause.

2016-01-28  Niels Möller  <nisse@lysator.liu.se>

	* Released nettle-3.2.

2016-01-26  Niels Möller  <nisse@lysator.liu.se>

	* tools/nettle-pbkdf2.c (main): Fix handling of unrecognized
	options. Bug reported by Dongsheng Zhang. Display usage message
	and exit non-zero. Also added "Usage: "-prefix to the message.
	* tools/nettle-hash.c (usage): New function, extracted from main.
	(main): Analogous fix for unrecognized options.

2016-01-23  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Set UPDATED-FOR to 3.2.

2016-01-21  Niels Möller  <nisse@lysator.liu.se>

	* .gitlab-ci.yml: New file. Configuration for gitlab's continuous
	integration system.

2016-01-20  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/dlopen-test.c (main): Mark arguments as UNUSED.

	* testsuite/Makefile.in (clean): Delete dlopen-test.

	* configure.ac: Bump package version, to nettle-3.2.
	(LIBNETTLE_MINOR, LIBHOGWEED_MINOR): Bump minor versions, to
	libnettle.so.6.2 and and libhogweed.so.4.2.

2016-01-10  Niels Möller  <nisse@lysator.liu.se>

	* base64-encode.c (encode_raw): Use const uint8_t * for the
	alphabet argument.

	* nettle.texinfo (RSA): Document the rsa_pkcs1_verify and
	rsa_pkcs1_sign functions, and the new rsa_*_tr functions.

2015-12-18  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/testutils.h: Fix include order, system headers before
	nettle headers. Always include version.h, needed by
	version-test.c. It was included indirectly via bignum.h, but only
	if configured with publickey support.

	* configure.ac (IF_DLOPEN_TEST): Fixed shell conditional.

	* testsuite/ecc-mod-test.c (test_main): Handle random seeding if
	NETTLE_TEST_SEED is set in the environment.

2015-12-15  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/ecc-384-modp.asm: Fixed carry propagation bug. Problem
	reported by Hanno Böck. Simplified the folding to always use
	non-negative carry, the old code attempted to add in a carry which
	could be either positive or negative, but didn't get that case
	right.

2015-12-10  Niels Möller  <nisse@lysator.liu.se>

	* ecc-256.c (ecc_256_modp): Fixed carry propagation bug. Problem
	reported by Hanno Böck.
	(ecc_256_modq): Fixed another carry propagation bug.

2015-11-23  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Document rsa_encrypt, rsa_decrypt and
	rsa_decrypt_tr. Text contributed by Andy Lawrence.

2015-11-15  Niels Möller  <nisse@lysator.liu.se>

	* rsa.h (_rsa_blind, _rsa_unblind): Mark as deprecated.

2015-09-17  Niels Möller  <nisse@lysator.liu.se>

	* rsa-md5-sign-tr.c (rsa_md5_sign_tr, rsa_md5_sign_digest_tr): New
	file, new functions.
	* rsa-sha1-sign-tr.c (rsa_sha1_sign_tr, rsa_sha1_sign_digest_tr):
	Likewise.
	* rsa-sha256-sign-tr.c (rsa_sha256_sign_tr)
	(rsa_sha256_sign_digest_tr): Likewise.
	* rsa-sha512-sign-tr.c (rsa_sha512_sign_tr)
	(rsa_sha512_sign_digest_tr): Likewise.
	* rsa.h: Added corresponding prototypes.
	* Makefile.in (hogweed_SOURCES): Added new files.

	* testsuite/testutils.c (SIGN): Extend macro to test new
	functions, and the rsa_*_sign_digest functions. Updated callers.

2015-09-14  Niels Möller  <nisse@lysator.liu.se>

	* rsa-decrypt-tr.c (rsa_decrypt_tr): Use rsa_compute_root_tr.
	Mainly for simplicity and consistency, I'm not aware of any CRT
	fault attacks on RSA decryption.

	* testsuite/rsa-encrypt-test.c (test_main): Added test with
	invalid private key.

	* rsa-sign-tr.c (rsa_compute_root_tr): New file and function.
	* rsa.h: Declare it.
	* rsa-pkcs1-sign-tr.c (rsa_pkcs1_sign_tr): Use rsa_compute_root_tr.
	(rsa_verify_res): Deleted, replaced by rsa_compute_root_tr.
	* testsuite/rsa-sign-tr-test.c (test_rsa_sign_tr): Check that
	signature argument is unchanged on failure.
	* Makefile.in (hogweed_SOURCES): Added rsa-sign-tr.c.

2015-09-07  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/rsa-sign-tr-test.c: Drop include of nettle-internal.h.
	(test_main): Fix incorrect use of sizeof, and use LDATA macro.

	From Nikos Mavrogiannopoulos.
	* rsa-pkcs1-sign-tr.c (rsa_verify_res): New function.
	(rsa_pkcs1_sign_tr): Check result of private key operation, to
	protect against hardware or software errors leaking the private
	key.
	* testsuite/rsa-sign-tr-test.c: New testcase.

2015-09-06  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Updated SHA3 documentation.

2015-09-02  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/dlopen-test.c: New test program, exposing the problem
	with ifunc and RTLD_NOW.

	* testsuite/Makefile.in (TS_ALL): Conditionally add dlopen-test.
	(SOURCES): Added dlopen-test.c.
	(dlopen-test): New target, unlike other test programs, *not*
	linked with -lnettle.

	* configure.ac: Check for dlfcn.h and the dlopen function.
	(IF_DLOPEN_TEST): New substituted variable, true if dlopen is
	available and we are building a shared library.

	* fat-setup.h: Disable use of ifunc, since it breaks dlopen with
	RTLD_NOW.

2015-08-25  Niels Möller  <nisse@lysator.liu.se>

	* NEWS: Started on entries for Nettle-3.2.

	* sha3.h (NETTLE_SHA3_FIPS202): New preprocessor constant.

2015-08-24  Niels Möller  <nisse@lysator.liu.se>

	* testsuite/sha3.awk: Document origin of test vectors.

	From Nikos Mavrogiannopoulos.
	* sha3.c (_sha3_pad): Update for NIST version.
	* testsuite/sha3-224-test.c: Updated test vectors.
	* testsuite/sha3-256-test.c: Likewise.
	* testsuite/sha3-384-test.c: Likewise.
	* testsuite/sha3-512-test.c: Likewise.

2015-06-03  Niels Möller  <nisse@lysator.liu.se>

	* arm/neon/chacha-core-internal.asm: New file. 55% speedup over C
	version on Cortex-A9.

2015-05-19  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: ABI detection (n32 or n64) on Irix, and
	appropriate default for libdir. Patch from Klaus Ziegler.

2015-05-12  Niels Möller  <nisse@lysator.liu.se>

	* version.c (nettle_version_major, nettle_version_minor): New
	file. New functions, returning the value of the corresponding
	preprocessor constant.
	* Makefile.in (nettle_SOURCES): Added version.c.
	* testsuite/version-test.c: New testcase.
	* testsuite/Makefile.in (TS_NETTLE_SOURCES): Added version-test.c.

2015-04-29  Niels Möller  <nisse@lysator.liu.se>

	* arm/v6/sha256-compress.asm: Fix syntax error in offset
	addressing. Spotted by Jukka Ukkonen.
	* arm/v6/aes-decrypt-internal.asm: Drop %-prefix on r12 register.
	* arm/v6/aes-encrypt-internal.asm: Likewise.

2015-04-24  Niels Möller  <nisse@lysator.liu.se>

	* Released nettle-3.1.1.

	* configure.ac: Bump package version, to nettle-3.1.1.
	(LIBNETTLE_MINOR, LIBHOGWEED_MINOR): Bump minor versions, to
	libnettle.so.6.1 and and libhogweed.so.4.1.

2015-04-22  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/gcm-hash8.asm: Use ".value" instead of ".short", since
	the latter is not supported by the Sun/Oracle assembler.

2015-04-13  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac: Fix shell quoting in test of GMP_NUMB_BITS asm
	compatibility. Reported by Edward Sheldrake.

2015-04-07  Niels Möller  <nisse@lysator.liu.se>

	* Released nettle-3.1.

2015-03-31  Niels Möller  <nisse@lysator.liu.se>

	* x86_64/ecc-224-modp.asm: Require that GMP_NUMB_BITS == 64.
	* x86_64/ecc-521-modp.asm: Likewise. Note that the other
	ecc-*-modp.asm files happen to work fine on x86_64, with either 32
	or 64 bits.

	* asm.m4 (GMP_NUMB_BITS): New macro, expanding to nothing.

	* configure.ac: Move tests for compiler characteristics,
	libraries, and GMP_NUMB_BITS, before assembler-related tests.
	For files in $asm_hogweed_optional_list, check if they declare
	a GMP_NUMB_BITS requirement, and skip files which are incompatible
	with the configuration. Needed for --enable-mini-gmp om w64.

	* Makefile.in (clean-here): Unconditionally delete *.a (including
	stub libraries like *.dll.a).

2015-03-30  Niels Möller  <nisse@lysator.liu.se>

	* version.h.in (GMP_NUMB_BITS) [NETTLE_USE_MINI_GMP]: Move
	definition here (uses configure substitution).
	* bignum.h (GMP_NUMB_BITS): ...old location.

	* nettle.texinfo: Updated version number.
	(Installation): Document some more configure options.

	* testsuite/symbols-test: Look for NETTLE_USE_MINI_GMP in
	version.h, not bignum.h. Allow leading underscore on mini-gmp
	symbols.

2015-03-26  Niels Möller  <nisse@lysator.liu.se>

	* Makefile.in (PRE_CPPFLAGS): Drop -I$(srcdir), no longer needed.
	(HEADERS): Added bignum.h. Removed version.h.
	(INSTALL_HEADERS): Added version.h.
	(DISTFILES): Removed bignum.h.in.
	(bignum.h): Deleted make target.
	(distclean-here): Don't delete bignum.h.

	* configure.ac: No longer generate bignum.h.

	* bignum.h: Renamed. Removed substitution of NETTLE_USE_MINI_GMP,
	and include version.h instead.
	* bignum.h.in: ... old name.

	* version.h.in (NETTLE_USE_MINI_GMP): Substitute here.

2015-03-25  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac (MAJOR_VERSION, MINOR_VERSION): Tweak sed
	expressions, to tolerate version suffixes.

	* Makefile.in (distdir): Include assembly files from the new
	x86_64/aesni, x86_64/fat, and arm/fat directories.

	* ed25519-sha512-pubkey.c: Fix stack overwrite. The digest array
	must have room for a complete sha512 digest.

2015-03-19  Niels Möller  <nisse@lysator.liu.se>

	* Makefile.in (OPT_HOGWEED_SOURCES): Deleted make variable.
	(nettle_SOURCES, hogweed_SOURCES): Don't include optional sources
	here.
	(OPT_SOURCES): New variable.
	(SOURCES): Include OPT_SOURCES.
	(DISTFILES): Drop mini-gmp.c here, included via OPT_SOURCES.
	(nettle_OBJS, hogweed_OBJS): Add the object files corresponding to
	the optional source files included in the build.

	* ecc-curve.h (nettle_curve25519): Removed public declaration.
	* ecc-internal.h (_nettle_curve25519): New location, new name.
	Updated all users.

	* nettle.texinfo: Updated EdDSA documentation.

	* Makefile.in (DISTFILES): Added version.h.in, libnettle.map.in,
	and libhogweed.map.in (latter two patch by Nikos).
	(version.h): New make target.
	(distclean-here): Added version.h, libnettle.map, and
	libhogweed.map.

	From Nikos Mavrogiannopoulos.
	* configure.ac (MAJOR_VERSION, MINOR_VERSION): New substituted
	variables.
	* version.h.in: New file, defining version numbers.

2015-03-18  Niels Möller  <nisse@lysator.liu.se>

	EdDSA interface change, use plain strings to represent keys.
	* eddsa.h (_ED25519_LIMB_SIZE): Deleted constant.
	(struct ed25519_private_key, ed25519_public_key): Deleted.
	* eddsa-expand.c (_eddsa_expand_key): Don't compute the public
	key.
	(_eddsa_expand_key_itch): Deleted function.
	* eddsa-pubkey.c (_eddsa_public_key, _eddsa_public_key_itch): New
	file, new functions.
	* ed25519-sha512-pubkey.c (ed25519_sha512_public_key): New file
	and function.
	* ed25519-sha512-verify.c (ed25519_sha512_set_public_key): Deleted
	function.
	(ed25519_sha512_verify): Use a string to represent the public key.
	* ed25519-sha512-sign.c (ed25519_sha512_set_private_key): Deleted
	function.
	(ed25519_sha512_sign): Use strings for the input key pair.
	* Makefile.in (hogweed_SOURCES): Added eddsa-pubkey.c and
	ed25519-sha512-pubkey.c.
	* testsuite/eddsa-sign-test.c (test_eddsa_sign): Adapt to
	_eddsa_expand_key changes, and use _eddsa_public_key.
	* testsuite/ed25519-test.c (test_one): Test
	ed25519_sha512_public_key, and adapt to new ed25519 interface.

2015-03-14  Niels Möller  <nisse@lysator.liu.se>

	* ccm.c (memeql_sec): New function, more side-channel silent than
	memcmp.
	(ccm_decrypt_message): Use it.

2015-03-12  Niels Möller  <nisse@lysator.liu.se>

	* base64.h (struct base64_encode_ctx): Micro optimization of
	struct layout, saving a few bytes.
	(struct base64_decode_ctx): Likewise.
	* base16.h (struct base16_decode_ctx): Likewise.

	* nettle.texinfo (ASCII encoding): Document base64url functions.

2015-03-10  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Update documentation of curve25519_mul. Say that
	the output is undefined for points belonging to the twist rather
	than the proper curve.

	* curve25519-mul.c (curve25519_mul): Changed return type to void.
	* curve25519.h (curve25519_mul): Updated prototype.
	* examples/hogweed-benchmark.c (bench_curve25519_mul): Drop check
	of curve25519_mul return value.
	* testsuite/curve25519-dh-test.c (test_a): Likewise.

2015-02-26  Niels Möller  <nisse@lysator.liu.se>

	* nettle.texinfo: Document curve25519 and eddsa.

2015-02-10  Niels Möller  <nisse@lysator.liu.se>

	* base64url-meta.c (nettle_base64url): New file.
	* nettle-meta.h (nettle_base64url): Declare it.
	* nettle-meta-armors.c (nettle_armors): Added nettle_base64url.
	* testsuite/meta-armor-test.c: Updated testcase.
	* testsuite/base64-test.c (test_main): Additional tests, using
	nettle_base64url.
	* Makefile.in (nettle_SOURCES): Added base64url-meta.c.

	Base-64 generalization to support RFC4648 URL safe alphabet,
	contributed by Amos Jeffries.
	* base64url-decode.c (base64url_decode_init): New file and
	function.
	* base64url-encode.c (base64url_encode_init): New file and
	function.
	* Makefile.in (nettle_SOURCES): Added base64url-encode.c and
	base64url-decode.c.
	* base64.h: Declare new functions.
	* testsuite/base64-test.c (test_fuzz): Test base64url encoding and
	decoding.

	* base64.h (struct base64_encode_ctx): Added pointer to alphabet.
	(struct base64_decode_ctx): Added pointer to decoding table.
	* base64-decode.c (base64_decode_init): Initialize table pointer.
	Moved definition of table to local scope.
	(base64_decode_single): Use the context's decoding table.
	* base64-encode.c (ENCODE): Added alphabet argument. Updated all
	uses.
	(encode_raw): New static function, like base64_encode_raw
	but with an alphabet argument.
	(base64_encode_raw): Call encode_raw.
	(base64_encode_init): Initialize alphabet pointer.
	(base64_encode_single, base64_encode_update, base64_encode_final):
	Use the context's alphabet.

2015-02-09  Niels Möller  <nisse@lysator.liu.se>

	* base64-encode.c (base64_encode): Deleted old #if:ed out
	function.

	* testsuite/base64-test.c (test_fuzz_once, test_fuzz): Additional
	tests, based on contribution by Amos Jeffries.

2015-02-05  Niels Möller  <nisse@lysator.liu.se>

	* configure.ac (LIBHOGWEED_MAJOR): Undo latest bump, 4 should be
	enough (previous release, nettle-3.0, used 3).

2015-01-30  Niels Möller  <nisse@lysator.liu.se>

	Update chacha-poly1305 for draft-irtf-cfrg-chacha20-poly1305-08.
	* chacha-poly1305.h (CHACHA_POLY1305_NONCE_SIZE): Increase to 12
	bytes, i.e., CHACHA_NONCE96_SIZE.
	* chacha-poly1305.c (chacha_poly1305_set_nonce): Use
	chacha_set_nonce96.
	(poly1305_pad): New function.
	(chacha_poly1305_encrypt): Use poly1305_pad.
	(chacha_poly1305_digest): Call poly1305_pad, and format length
	fields as a single poly1305 block.