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encoding parameters and hence was not vulnerable.
[Bodo Moeller]
*) BN_sqr() bug fix.
[Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
*) Rabin-Miller test analyses assume uniformly distributed witnesses,
so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
followed by modular reduction.
[Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
*) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
equivalent based on BN_pseudo_rand() instead of BN_rand().
[Bodo Moeller]
*) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
This function was broken, as the check for a new client hello message
to handle SGC did not allow these large messages.
(Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
[Lutz Jaenicke]
*) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
[Lutz Jaenicke]
*) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
[Lutz Jaenicke]
*) Rework the configuration and shared library support for Tru64 Unix.
The configuration part makes use of modern compiler features and
still retains old compiler behavior for those that run older versions
of the OS. The shared library support part includes a variant that
uses the RPATH feature, and is available through the special
configuration target "alpha-cc-rpath", which will never be selected
automatically.
[Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
*) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
with the same message size as in ssl3_get_certificate_request().
Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
messages might inadvertently be reject as too long.
[Petr Lampa <lampa@fee.vutbr.cz>]
*) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
[Andy Polyakov]
*) Modified SSL library such that the verify_callback that has been set
specificly for an SSL object with SSL_set_verify() is actually being
used. Before the change, a verify_callback set with this function was
ignored and the verify_callback() set in the SSL_CTX at the time of
the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
to allow the necessary settings.
[Lutz Jaenicke]
*) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
explicitly to NULL, as at least on Solaris 8 this seems not always to be
done automatically (in contradiction to the requirements of the C
standard). This made problems when used from OpenSSH.
[Lutz Jaenicke]
*) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
dh->length and always used
BN_rand_range(priv_key, dh->p).
BN_rand_range() is not necessary for Diffie-Hellman, and this
specific range makes Diffie-Hellman unnecessarily inefficient if
dh->length (recommended exponent length) is much smaller than the
length of dh->p. We could use BN_rand_range() if the order of
the subgroup was stored in the DH structure, but we only have
dh->length.
So switch back to
BN_rand(priv_key, l, ...)
where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
otherwise.
[Bodo Moeller]
*) In
RSA_eay_public_encrypt
RSA_eay_private_decrypt
RSA_eay_private_encrypt (signing)
RSA_eay_public_decrypt (signature verification)
(default implementations for RSA_public_encrypt,
RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
always reject numbers >= n.
[Bodo Moeller]
*) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
to synchronize access to 'locking_thread'. This is necessary on
systems where access to 'locking_thread' (an 'unsigned long'
variable) is not atomic.
[Bodo Moeller]
*) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
*before* setting the 'crypto_lock_rand' flag. The previous code had
a race condition if 0 is a valid thread ID.
[Travis Vitek <vitek@roguewave.com>]
*) Add support for shared libraries under Irix.
[Albert Chin-A-Young <china@thewrittenword.com>]
*) Add configuration option to build on Linux on both big-endian and
little-endian MIPS.
[Ralf Baechle <ralf@uni-koblenz.de>]
*) Add the possibility to create shared libraries on HP-UX.
[Richard Levitte]
Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
*) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
PRNG state recovery was possible based on the output of
one PRNG request appropriately sized to gain knowledge on
'md' followed by enough consecutive 1-byte PRNG requests
to traverse all of 'state'.
1. When updating 'md_local' (the current thread's copy of 'md')
during PRNG output generation, hash all of the previous
'md_local' value, not just the half used for PRNG output.
2. Make the number of bytes from 'state' included into the hash
independent from the number of PRNG bytes requested.
The first measure alone would be sufficient to avoid
Markku-Juhani's attack. (Actually it had never occurred
to me that the half of 'md_local' used for chaining was the
half from which PRNG output bytes were taken -- I had always
assumed that the secret half would be used.) The second
measure makes sure that additional data from 'state' is never
mixed into 'md_local' in small portions; this heuristically
further strengthens the PRNG.
[Bodo Moeller]
*) Fix crypto/bn/asm/mips3.s.
[Andy Polyakov]
*) When only the key is given to "enc", the IV is undefined. Print out
an error message in this case.
[Lutz Jaenicke]
*) Handle special case when X509_NAME is empty in X509 printing routines.
[Steve Henson]
*) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
positive and less than q.
[Bodo Moeller]
*) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
used: it isn't thread safe and the add_lock_callback should handle
that itself.
[Paul Rose <Paul.Rose@bridge.com>]
*) Verify that incoming data obeys the block size in
ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
[Bodo Moeller]
*) Fix OAEP check.
[Ulf Möller, Bodo Möller]
*) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
when fixing the server behaviour for backwards-compatible 'client
hello' messages. (Note that the attack is impractical against
SSL 3.0 and TLS 1.0 anyway because length and version checking
means that the probability of guessing a valid ciphertext is
around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
paper.)
Before 0.9.5, the countermeasure (hide the error by generating a
random 'decryption result') did not work properly because
ERR_clear_error() was missing, meaning that SSL_get_error() would
detect the supposedly ignored error.
Both problems are now fixed.
[Bodo Moeller]
*) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
(previously it was 1024).
[Bodo Moeller]
*) Fix for compatibility mode trust settings: ignore trust settings
unless some valid trust or reject settings are present.
[Steve Henson]
*) Fix for blowfish EVP: its a variable length cipher.
[Steve Henson]
*) Fix various bugs related to DSA S/MIME verification. Handle missing
parameters in DSA public key structures and return an error in the
DSA routines if parameters are absent.
[Steve Henson]
*) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
in the current directory if neither $RANDFILE nor $HOME was set.
RAND_file_name() in 0.9.6a returned NULL in this case. This has
caused some confusion to Windows users who haven't defined $HOME.
Thus RAND_file_name() is changed again: e_os.h can define a
DEFAULT_HOME, which will be used if $HOME is not set.
For Windows, we use "C:"; on other platforms, we still require
environment variables.
*) Move 'if (!initialized) RAND_poll()' into regions protected by
CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
having multiple threads call RAND_poll() concurrently.
[Bodo Moeller]
*) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
combination of a flag and a thread ID variable.
Otherwise while one thread is in ssleay_rand_bytes (which sets the
flag), *other* threads can enter ssleay_add_bytes without obeying
the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
that they do not hold after the first thread unsets add_do_not_lock).
[Bodo Moeller]
*) Change bctest again: '-x' expressions are not available in all
versions of 'test'.
[Bodo Moeller]
Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
*) Fix a couple of memory leaks in PKCS7_dataDecode()
[Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
*) Change Configure and Makefiles to provide EXE_EXT, which will contain
the default extension for executables, if any. Also, make the perl
scripts that use symlink() to test if it really exists and use "cp"
if it doesn't. All this made OpenSSL compilable and installable in
CygWin.
[Richard Levitte]
*) Fix for asn1_GetSequence() for indefinite length constructed data.
If SEQUENCE is length is indefinite just set c->slen to the total
amount of data available.
[Steve Henson, reported by shige@FreeBSD.org]
[This change does not apply to 0.9.7.]
*) Change bctest to avoid here-documents inside command substitution
(workaround for FreeBSD /bin/sh bug).
For compatibility with Ultrix, avoid shell functions (introduced
in the bctest version that searches along $PATH).
[Bodo Moeller]
*) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
with des_encrypt() defined on some operating systems, like Solaris
and UnixWare.
[Richard Levitte]
*) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
On the Importance of Eliminating Errors in Cryptographic
Computations, J. Cryptology 14 (2001) 2, 101-119,
http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
[Ulf Moeller]
*) MIPS assembler BIGNUM division bug fix.
[Andy Polyakov]
*) Disabled incorrect Alpha assembler code.
[Richard Levitte]
*) Fix PKCS#7 decode routines so they correctly update the length
after reading an EOC for the EXPLICIT tag.
[Steve Henson]
[This change does not apply to 0.9.7.]
*) Fix bug in PKCS#12 key generation routines. This was triggered
if a 3DES key was generated with a 0 initial byte. Include
PKCS12_BROKEN_KEYGEN compilation option to retain the old
(but broken) behaviour.
[Steve Henson]
*) Enhance bctest to search for a working bc along $PATH and print
it when found.
[Tim Rice <tim@multitalents.net> via Richard Levitte]
*) Fix memory leaks in err.c: free err_data string if necessary;
don't write to the wrong index in ERR_set_error_data.
[Bodo Moeller]
*) Implement ssl23_peek (analogous to ssl23_read), which previously
did not exist.
[Bodo Moeller]
*) Replace rdtsc with _emit statements for VC++ version 5.
[Jeremy Cooper <jeremy@baymoo.org>]
*) Make it possible to reuse SSLv2 sessions.
[Richard Levitte]
*) In copy_email() check for >= 0 as a return value for
X509_NAME_get_index_by_NID() since 0 is a valid index.
[Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
*) Avoid coredump with unsupported or invalid public keys by checking if
X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
PKCS7_verify() fails with non detached data.
[Steve Henson]
*) Don't use getenv in library functions when run as setuid/setgid.
New function OPENSSL_issetugid().
[Ulf Moeller]
*) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
due to incorrect handling of multi-threading:
1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3. Count how many times MemCheck_off() has been called so that
nested use can be treated correctly. This also avoids
inband-signalling in the previous code (which relied on the
assumption that thread ID 0 is impossible).
[Bodo Moeller]
*) Add "-rand" option also to s_client and s_server.
[Lutz Jaenicke]
*) Fix CPU detection on Irix 6.x.
[Kurt Hockenbury <khockenb@stevens-tech.edu> and
"Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
*) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
was empty.
[Steve Henson]
[This change does not apply to 0.9.7.]
*) Use the cached encoding of an X509_NAME structure rather than
copying it. This is apparently the reason for the libsafe "errors"
but the code is actually correct.
[Steve Henson]
*) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
Bleichenbacher's DSA attack.
Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
to be set and top=0 forces the highest bit to be set; top=-1 is new
and leaves the highest bit random.
[Ulf Moeller, Bodo Moeller]
*) In the NCONF_...-based implementations for CONF_... queries
(crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
a temporary CONF structure with the data component set to NULL
(which gives segmentation faults in lh_retrieve).
Instead, use NULL for the CONF pointer in CONF_get_string and
CONF_get_number (which may use environment variables) and directly
return NULL from CONF_get_section.
[Bodo Moeller]
*) Fix potential buffer overrun for EBCDIC.
[Ulf Moeller]
*) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
keyUsage if basicConstraints absent for a CA.
[Steve Henson]
*) Make SMIME_write_PKCS7() write mail header values with a format that
is more generally accepted (no spaces before the semicolon), since
some programs can't parse those values properly otherwise. Also make
sure BIO's that break lines after each write do not create invalid
headers.
[Richard Levitte]
*) Make the CRL encoding routines work with empty SEQUENCE OF. The
macros previously used would not encode an empty SEQUENCE OF
and break the signature.
[Steve Henson]
[This change does not apply to 0.9.7.]
*) Zero the premaster secret after deriving the master secret in
DH ciphersuites.
[Steve Henson]
*) Add some EVP_add_digest_alias registrations (as found in
OpenSSL_add_all_digests()) to SSL_library_init()
aka OpenSSL_add_ssl_algorithms(). This provides improved
compatibility with peers using X.509 certificates
with unconventional AlgorithmIdentifier OIDs.
[Bodo Moeller]
*) Fix for Irix with NO_ASM.
["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
*) ./config script fixes.
[Ulf Moeller, Richard Levitte]
*) Fix 'openssl passwd -1'.
[Bodo Moeller]
*) Change PKCS12_key_gen_asc() so it can cope with non null
terminated strings whose length is passed in the passlen
parameter, for example from PEM callbacks. This was done
by adding an extra length parameter to asc2uni().
[Steve Henson, reported by <oddissey@samsung.co.kr>]
*) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
call failed, free the DSA structure.
[Bodo Moeller]
*) Fix to uni2asc() to cope with zero length Unicode strings.
These are present in some PKCS#12 files.
[Steve Henson]
*) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
when writing a 32767 byte record.
[Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
*) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
(RSA objects have a reference count access to which is protected
by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
so they are meant to be shared between threads.)
[Bodo Moeller, Geoff Thorpe; original patch submitted by
"Reddie, Steven" <Steven.Reddie@ca.com>]
*) Fix a deadlock in CRYPTO_mem_leaks().
[Bodo Moeller]
*) Use better test patterns in bntest.
[Ulf Möller]
*) rand_win.c fix for Borland C.
[Ulf Möller]
*) BN_rshift bugfix for n == 0.
[Bodo Moeller]
*) Add a 'bctest' script that checks for some known 'bc' bugs
so that 'make test' does not abort just because 'bc' is broken.
[Bodo Moeller]
*) Store verify_result within SSL_SESSION also for client side to
avoid potential security hole. (Re-used sessions on the client side
always resulted in verify_result==X509_V_OK, not using the original
result of the server certificate verification.)
[Lutz Jaenicke]
*) Fix ssl3_pending: If the record in s->s3->rrec is not of type
SSL3_RT_APPLICATION_DATA, return 0.
Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
[Bodo Moeller]
*) Fix SSL_peek:
Both ssl2_peek and ssl3_peek, which were totally broken in earlier
releases, have been re-implemented by renaming the previous
implementations of ssl2_read and ssl3_read to ssl2_read_internal
and ssl3_read_internal, respectively, and adding 'peek' parameters
to them. The new ssl[23]_{read,peek} functions are calls to
ssl[23]_read_internal with the 'peek' flag set appropriately.
A 'peek' parameter has also been added to ssl3_read_bytes, which
does the actual work for ssl3_read_internal.
[Bodo Moeller]
*) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
the method-specific "init()" handler. Also clean up ex_data after
calling the method-specific "finish()" handler. Previously, this was
happening the other way round.
[Geoff Thorpe]
*) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
The previous value, 12, was not always sufficient for BN_mod_exp().
[Bodo Moeller]
*) Make sure that shared libraries get the internal name engine with
the full version number and not just 0. This should mark the
shared libraries as not backward compatible. Of course, this should
be changed again when we can guarantee backward binary compatibility.
[Richard Levitte]
*) Fix typo in get_cert_by_subject() in by_dir.c
[Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
*) Rework the system to generate shared libraries:
- Make note of the expected extension for the shared libraries and
if there is a need for symbolic links from for example libcrypto.so.0
to libcrypto.so.0.9.7. There is extended info in Configure for
that.
- Make as few rebuilds of the shared libraries as possible.
- Still avoid linking the OpenSSL programs with the shared libraries.
- When installing, install the shared libraries separately from the
static ones.
[Richard Levitte]
*) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
and not in SSL_clear because the latter is also used by the
accept/connect functions; previously, the settings made by
SSL_set_read_ahead would be lost during the handshake.
[Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
*) Correct util/mkdef.pl to be selective about disabled algorithms.
Previously, it would create entries for disableed algorithms no
matter what.
[Richard Levitte]
*) Added several new manual pages for SSL_* function.
[Lutz Jaenicke]
Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
*) In ssl23_get_client_hello, generate an error message when faced
with an initial SSL 3.0/TLS record that is too small to contain the
first two bytes of the ClientHello message, i.e. client_version.
(Note that this is a pathologic case that probably has never happened
in real life.) The previous approach was to use the version number
should not depend on that one because it is not authenticated
by the Finished messages.
[Bodo Moeller]
*) More robust randomness gathering functions for Windows.
[Jeffrey Altman <jaltman@columbia.edu>]
*) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
not set then we don't setup the error code for issuer check errors
to avoid possibly overwriting other errors which the callback does
handle. If an application does set the flag then we assume it knows
what it is doing and can handle the new informational codes
appropriately.
[Steve Henson]
*) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
a general "ANY" type, as such it should be able to decode anything
including tagged types. However it didn't check the class so it would
wrongly interpret tagged types in the same way as their universal
counterpart and unknown types were just rejected. Changed so that the
tagged and unknown types are handled in the same way as a SEQUENCE:
that is the encoding is stored intact. There is also a new type
"V_ASN1_OTHER" which is used when the class is not universal, in this
case we have no idea what the actual type is so we just lump them all
together.
[Steve Henson]
*) On VMS, stdout may very well lead to a file that is written to
in a record-oriented fashion. That means that every write() will
write a separate record, which will be read separately by the
programs trying to read from it. This can be very confusing.
The solution is to put a BIO filter in the way that will buffer
text until a linefeed is reached, and then write everything a
line at a time, so every record written will be an actual line,
not chunks of lines and not (usually doesn't happen, but I've
seen it once) several lines in one record. BIO_f_linebuffer() is
the answer.
Currently, it's a VMS-only method, because that's where it has
been tested well enough.
[Richard Levitte]
*) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
(Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
but it was in 0.9.6-beta[12].)
*) Disable the check for content being present when verifying detached
signatures in pk7_smime.c. Some versions of Netscape (wrongly)
include zero length content when signing messages.
[Steve Henson]
*) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
BIO_ctrl (for BIO pairs).
*) Add DSO method for VMS.
[Richard Levitte]
*) Bug fix: Montgomery multiplication could produce results with the
wrong sign.
[Ulf Möller]
*) Add RPM specification openssl.spec and modify it to build three
packages. The default package contains applications, application
documentation and run-time libraries. The devel package contains
include files, static libraries and function documentation. The
doc package contains the contents of the doc directory. The original
openssl.spec was provided by Damien Miller <djm@mindrot.org>.
[Richard Levitte]
*) Add a large number of documentation files for many SSL routines.
[Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
*) Add a configuration entry for Sony News 4.
[NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
*) Don't set the two most significant bits to one when generating a
random number < q in the DSA library.
[Ulf Möller]
*) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
the underlying transport is blocking) if a handshake took place.
(The default behaviour is needed by applications such as s_client
and s_server that use select() to determine when to use SSL_read;
but for applications that know in advance when to expect data, it
just makes things more complicated.)
[Bodo Moeller]
*) Add RAND_egd_bytes(), which gives control over the number of bytes read
from EGD.
[Ben Laurie]
*) Add a few more EBCDIC conditionals that make `req' and `x509'
work better on such systems.
[Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
*) Add two demo programs for PKCS12_parse() and PKCS12_create().
Update PKCS12_parse() so it copies the friendlyName and the
keyid to the certificates aux info.
[Steve Henson]
*) Fix bug in PKCS7_verify() which caused an infinite loop
if there was more than one signature.
[Sven Uszpelkat <su@celocom.de>]
*) Major change in util/mkdef.pl to include extra information
about each symbol, as well as presentig variables as well
as functions. This change means that there's n more need
to rebuild the .num files when some algorithms are excluded.
[Richard Levitte]
*) Allow the verify time to be set by an application,
rather than always using the current time.
[Steve Henson]
*) Phase 2 verify code reorganisation. The certificate
verify code now looks up an issuer certificate by a
number of criteria: subject name, authority key id
and key usage. It also verifies self signed certificates
by the same criteria. The main comparison function is
X509_check_issued() which performs these checks.
Lot of changes were necessary in order to support this
without completely rewriting the lookup code.
Authority and subject key identifier are now cached.
The LHASH 'certs' is X509_STORE has now been replaced
by a STACK_OF(X509_OBJECT). This is mainly because an
LHASH can't store or retrieve multiple objects with
the same hash value.
As a result various functions (which were all internal
use only) have changed to handle the new X509_STORE
structure. This will break anything that messed round
with X509_STORE internally.
The functions X509_STORE_add_cert() now checks for an
exact match, rather than just subject name.
The X509_STORE API doesn't directly support the retrieval
of multiple certificates matching a given criteria, however
this can be worked round by performing a lookup first
(which will fill the cache with candidate certificates)
and then examining the cache for matches. This is probably
the best we can do without throwing out X509_LOOKUP
entirely (maybe later...).
The X509_VERIFY_CTX structure has been enhanced considerably.
All certificate lookup operations now go via a get_issuer()
callback. Although this currently uses an X509_STORE it
can be replaced by custom lookups. This is a simple way
to bypass the X509_STORE hackery necessary to make this
work and makes it possible to use more efficient techniques
in future. A very simple version which uses a simple
STACK for its trusted certificate store is also provided
using X509_STORE_CTX_trusted_stack().
The verify_cb() and verify() callbacks now have equivalents
in the X509_STORE_CTX structure.
X509_STORE_CTX also has a 'flags' field which can be used
to customise the verify behaviour.
[Steve Henson]
*) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
excludes S/MIME capabilities.
[Steve Henson]
*) When a certificate request is read in keep a copy of the
original encoding of the signed data and use it when outputing
again. Signatures then use the original encoding rather than
a decoded, encoded version which may cause problems if the
request is improperly encoded.
[Steve Henson]
*) For consistency with other BIO_puts implementations, call
buffer_write(b, ...) directly in buffer_puts instead of calling
BIO_write(b, ...).
In BIO_puts, increment b->num_write as in BIO_write.
*) Fix BN_mul_word for the case where the word is 0. (We have to use
BN_zero, we may not return a BIGNUM with an array consisting of
words set to zero.)
[Bodo Moeller]
*) Avoid calling abort() from within the library when problems are
detected, except if preprocessor symbols have been defined
(such as REF_CHECK, BN_DEBUG etc.).
[Bodo Moeller]
*) New openssl application 'rsautl'. This utility can be
used for low level RSA operations. DER public key
BIO/fp routines also added.
[Steve Henson]
*) New Configure entry and patches for compiling on QNX 4.
[Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
*) A demo state-machine implementation was sponsored by
Nuron (http://www.nuron.com/) and is now available in
demos/state_machine.
[Ben Laurie]
*) New options added to the 'dgst' utility for signature
generation and verification.
[Steve Henson]
*) Unrecognized PKCS#7 content types are now handled via a
catch all ASN1_TYPE structure. This allows unsupported
types to be stored as a "blob" and an application can
encode and decode it manually.
[Steve Henson]
*) Fix various signed/unsigned issues to make a_strex.c
compile under VC++.
[Oscar Jacobsson <oscar.jacobsson@celocom.com>]
*) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
length if passed a buffer. ASN1_INTEGER_to_BN failed
if passed a NULL BN and its argument was negative.
[Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
*) Modification to PKCS#7 encoding routines to output definite
length encoding. Since currently the whole structures are in
memory there's not real point in using indefinite length
constructed encoding. However if OpenSSL is compiled with
the flag PKCS7_INDEFINITE_ENCODING the old form is used.
[Steve Henson]
*) Added BIO_vprintf() and BIO_vsnprintf().
[Richard Levitte]
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*) Added more prefixes to parse for in the the strings written
through a logging bio, to cover all the levels that are available
through syslog. The prefixes are now:
PANIC, EMERG, EMR => LOG_EMERG
ALERT, ALR => LOG_ALERT
CRIT, CRI => LOG_CRIT
ERROR, ERR => LOG_ERR
WARNING, WARN, WAR => LOG_WARNING
NOTICE, NOTE, NOT => LOG_NOTICE
INFO, INF => LOG_INFO
DEBUG, DBG => LOG_DEBUG
and as before, if none of those prefixes are present at the
beginning of the string, LOG_ERR is chosen.
On Win32, the LOG_* levels are mapped according to this:
LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
LOG_WARNING => EVENTLOG_WARNING_TYPE
LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
[Richard Levitte]
*) Made it possible to reconfigure with just the configuration
argument "reconf" or "reconfigure". The command line arguments
are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
and are retrieved from there when reconfiguring.
[Richard Levitte]
Richard Levitte
committed
*) MD4 implemented.
[Assar Westerlund <assar@sics.se>, Richard Levitte]
Richard Levitte
committed
*) Add the arguments -CAfile and -CApath to the pkcs12 utility.
[Richard Levitte]
*) The obj_dat.pl script was messing up the sorting of object
names. The reason was that it compared the quoted version
of strings as a result "OCSP" > "OCSP Signing" because
" > SPACE. Changed script to store unquoted versions of
names and add quotes on output. It was also omitting some
names from the lookup table if they were given a default
value (that is if SN is missing it is given the same
value as LN and vice versa), these are now added on the
grounds that if an object has a name we should be able to
look it up. Finally added warning output when duplicate
short or long names are found.
[Steve Henson]
Dr. Stephen Henson
committed
*) Changes needed for Tandem NSK.
Dr. Stephen Henson
committed
*) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
RSA_padding_check_SSLv23(), special padding was never detected
and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
version rollback attacks was not effective.
In s23_clnt.c, don't use special rollback-attack detection padding
(RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
client; similarly, in s23_srvr.c, don't do the rollback check if
SSL 2.0 is the only protocol enabled in the server.
[Bodo Moeller]
*) Make it possible to get hexdumps of unprintable data with 'openssl
asn1parse'. By implication, the functions ASN1_parse_dump() and
BIO_dump_indent() are added.
[Richard Levitte]
*) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
these print out strings and name structures based on various
flags including RFC2253 support and proper handling of
multibyte characters. Added options to the 'x509' utility
to allow the various flags to be set.
[Steve Henson]
*) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
Also change the functions X509_cmp_current_time() and
X509_gmtime_adj() work with an ASN1_TIME structure,
this will enable certificates using GeneralizedTime in validity
dates to be checked.
[Steve Henson]
*) Make the NEG_PUBKEY_BUG code (which tolerates invalid
negative public key encodings) on by default,
NO_NEG_PUBKEY_BUG can be set to disable it.
[Steve Henson]
*) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
content octets. An i2c_ASN1_OBJECT is unnecessary because
the encoding can be trivially obtained from the structure.
[Steve Henson]
*) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
not read locks (CRYPTO_r_[un]lock).
[Bodo Moeller]
*) A first attempt at creating official support for shared
libraries through configuration. I've kept it so the
default is static libraries only, and the OpenSSL programs
are always statically linked for now, but there are
preparations for dynamic linking in place.
This has been tested on Linux and Tru64.
[Richard Levitte]
*) Randomness polling function for Win9x, as described in:
Peter Gutmann, Software Generation of Practically Strong
Random Numbers.
[Ulf Möller]
*) Fix so PRNG is seeded in req if using an already existing
DSA key.
[Steve Henson]
*) New options to smime application. -inform and -outform
allow alternative formats for the S/MIME message including
PEM and DER. The -content option allows the content to be
specified separately. This should allow things like Netscape
form signing output easier to verify.
[Steve Henson]
*) Fix the ASN1 encoding of tags using the 'long form'.
[Steve Henson]
*) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
STRING types. These convert content octets to and from the
underlying type. The actual tag and length octets are
already assumed to have been read in and checked. These
are needed because all other string types have virtually
identical handling apart from the tag. By having versions
of the ASN1 functions that just operate on content octets
IMPLICIT tagging can be handled properly. It also allows
the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
and ASN1_INTEGER are identical apart from the tag.
[Steve Henson]
*) Change the handling of OID objects as follows:
- New object identifiers are inserted in objects.txt, following
the syntax given in objects.README.
- objects.pl is used to process obj_mac.num and create a new
obj_mac.h.
- obj_dat.pl is used to create a new obj_dat.h, using the data in
obj_mac.h.
This is currently kind of a hack, and the perl code in objects.pl
isn't very elegant, but it works as I intended. The simplest way
to check that it worked correctly is to look in obj_dat.h and
check the array nid_objs and make sure the objects haven't moved
around (this is important!). Additions are OK, as well as
consistent name changes.
[Richard Levitte]
*) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
[Bodo Moeller]
*) Addition of the command line parameter '-rand file' to 'openssl req'.
The given file adds to whatever has already been seeded into the
random pool through the RANDFILE configuration file option or
environment variable, or the default random state file.
*) mkstack.pl now sorts each macro group into lexical order.
Previously the output order depended on the order the files
appeared in the directory, resulting in needless rewriting
of safestack.h .
[Steve Henson]
*) Patches to make OpenSSL compile under Win32 again. Mostly
work arounds for the VC++ problem that it treats func() as
func(void). Also stripped out the parts of mkdef.pl that
added extra typesafe functions: these no longer exist.
[Steve Henson]
*) Reorganisation of the stack code. The macros are now all
collected in safestack.h . Each macro is defined in terms of
a "stack macro" of the form SKM_<name>(type, a, b). The
DEBUG_SAFESTACK is now handled in terms of function casts,
this has the advantage of retaining type safety without the
use of additional functions. If DEBUG_SAFESTACK is not defined
then the non typesafe macros are used instead. Also modified the
mkstack.pl script to handle the new form. Needs testing to see
if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
the default if no major problems. Similar behaviour for ASN1_SET_OF
and PKCS12_STACK_OF.
[Steve Henson]
*) When some versions of IIS use the 'NET' form of private key the
key derivation algorithm is different. Normally MD5(password) is
used as a 128 bit RC4 key. In the modified case
MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
as the old Netscape_RSA functions except they have an additional
'sgckey' parameter which uses the modified algorithm. Also added
an -sgckey command line option to the rsa utility. Thanks to
Adrian Peck <bertie@ncipher.com> for posting details of the modified
algorithm to openssl-dev.
[Steve Henson]
*) The evp_local.h macros were using 'c.##kname' which resulted in
invalid expansion on some systems (SCO 5.0.5 for example).
Corrected to 'c.kname'.
[Phillip Porch <root@theporch.com>]
*) New X509_get1_email() and X509_REQ_get1_email() functions that return
a STACK of email addresses from a certificate or request, these look
in the subject name and the subject alternative name extensions and
omit any duplicate addresses.
[Steve Henson]
*) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
This makes DSA verification about 2 % faster.
[Bodo Moeller]
*) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
(meaning that now 2^5 values will be precomputed, which is only 4 KB
plus overhead for 1024 bit moduli).
This makes exponentiations about 0.5 % faster for 1024 bit
exponents (as measured by "openssl speed rsa2048").
[Bodo Moeller]
*) Rename memory handling macros to avoid conflicts with other
software:
Malloc => OPENSSL_malloc
Malloc_locked => OPENSSL_malloc_locked
Realloc => OPENSSL_realloc
Free => OPENSSL_free
[Richard Levitte]
*) New function BN_mod_exp_mont_word for small bases (roughly 15%
faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
*) CygWin32 support.
[John Jarvie <jjarvie@newsguy.com>]
*) The type-safe stack code has been rejigged. It is now only compiled
in when OpenSSL is configured with the DEBUG_SAFESTACK option and
by default all type-specific stack functions are "#define"d back to
standard stack functions. This results in more streamlined output
but retains the type-safety checking possibilities of the original
approach.
[Geoff Thorpe]