Newer
Older
Ralf S. Engelschall
committed
_______________
Changes between 0.9.6 and 0.9.7 [xx XXX 2001]
OpenSSL 0.9.6a/0.9.6b (bugfix releases, 5 Apr 2001 and 9 July 2001)
and OpenSSL 0.9.7 were developped in parallel, based on OpenSSL 0.9.6.
Change log entries are tagged as follows:
-) applies to 0.9.6a/0.9.6b/0.9.6c only
*) applies to 0.9.6a/0.9.6b/0.9.6c and 0.9.7
+) applies to 0.9.7 only
*) In crypto/dh/dh_key.c, change generate_key() (the default
implementation of DH_generate_key()) so that a new key is
generated each time DH_generate_key() is used on a DH object.
Previously, DH_generate_key() did not change existing keys
-- but ssl/s3_srvr.c always expected it to do so (in effect,
SSL_OP_SINGLE_DH_USE was ignored in servers reusing the same SSL
object for multiple connections; however, each new SSL object
created from an SSL_CTX got its own key).
[Bodo Moeller]
*) 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>]
+) Cleanup of EVP macros.
[Ben Laurie]
+) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
correct _ecb suffix.
[Ben Laurie]
+) Add initial OCSP responder support to ocsp application. The
revocation information is handled using the text based index
use by the ca application. The responder can either handle
requests generated internally, supplied in files (for example
via a CGI script) or using an internal minimal server.
[Steve Henson]
+) Add configuration choices to get zlib compression for TLS.
[Richard Levitte]
+) Changes to Kerberos SSL for RFC 2712 compliance:
1. Implemented real KerberosWrapper, instead of just using
KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2. Implemented optional authenticator field of KerberosWrapper.
Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
and authenticator structs; see crypto/krb5/.
Generalized Kerberos calls to support multiple Kerberos libraries.
[Vern Staats <staatsvr@asc.hpc.mil>,
Jeffrey Altman <jaltman@columbia.edu>
via Richard Levitte]
+) Cause 'openssl speed' to use fully hard-coded DSA keys as it
already does with RSA. testdsa.h now has 'priv_key/pub_key'
values for each of the key sizes rather than having just
parameters (and 'speed' generating keys each time).
[Geoff Thorpe]
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-) OpenSSL 0.9.6b released [9 July 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]
+) Speed up EVP routines.
Before:
encrypt
type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
decrypt
des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
After:
encrypt
des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
*) 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]
+) Added the OS2-EMX target.
["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
+) Rewrite apps to use NCONF routines instead of the old CONF. New functions
to support NCONF routines in extension code. New function CONF_set_nconf()
to allow functions which take an NCONF to also handle the old LHASH
structure: this means that the old CONF compatible routines can be
retained (in particular wrt extensions) without having to duplicate the
code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
[Steve Henson]
*) 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]
+) Enhance the general user interface with mechanisms for inner control
and with pssibilities to have yes/no kind of prompts.
[Richard Levitte]
+) Change all calls to low level digest routines in the library and
applications to use EVP. Add missing calls to HMAC_cleanup() and
don't assume HMAC_CTX can be copied using memcpy().
[Verdon Walker <VWalker@novell.com>, Steve Henson]
+) Add the possibility to control engines through control names but with
arbitrary arguments instead of just a string.
Change the key loaders to take a UI_METHOD instead of a callback
function pointer. NOTE: this breaks binary compatibility with earlier
versions of OpenSSL [engine].
Addapt the nCipher code for these new conditions and add a card insertion
callback.
[Richard Levitte]
+) Enhance the general user interface with mechanisms to better support
dialog box interfaces, application-defined prompts, the possibility
to use defaults (for example default passwords from somewhere else)
and interrupts/cancelations.
[Richard Levitte]
*) 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]
+) Tidy up PKCS#12 attribute handling. Add support for the CSP name
attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
[Steve Henson]
*) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
RSA encryption was accidentily 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 a memory leak in 'sk_dup()' in the case reallocation fails. (Also
tidy up some unecessarily weird code in 'sk_new()').
[Geoff, reported by Diego Tartara <dtartara@novamens.com>]
+) Change the key loading routines for ENGINEs to use the same kind
callback (pem_password_cb) as all other routines that need this
kind of callback.
[Richard Levitte]
*) 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]
+) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
256 bit (=32 byte) keys. Of course seeding with more entropy bytes
than this minimum value is recommended.
[Lutz Jaenicke]
+) New random seeder for OpenVMS, using the system process statistics
that are easily reachable.
[Richard Levitte]
+) Windows apparently can't transparently handle global
variables defined in DLLs. Initialisations such as:
const ASN1_ITEM *it = &ASN1_INTEGER_it;
wont compile. This is used by the any applications that need to
delcare their own ASN1 modules. This was fixed by adding the option
EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
needed for static libraries under Win32.
[Steve Henson]
+) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
setting of purpose and trust fields. New X509_STORE trust and
purpose functions and tidy up setting in other SSL functions.
[Steve Henson]
+) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
structure. These are inherited by X509_STORE_CTX when it is
initialised. This allows various defaults to be set in the
X509_STORE structure (such as flags for CRL checking and custom
purpose or trust settings) for functions which only use X509_STORE_CTX
internally such as S/MIME.
Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
trust settings if they are not set in X509_STORE. This allows X509_STORE
purposes and trust (in S/MIME for example) to override any set by default.
Add command line options for CRL checking to smime, s_client and s_server
applications.
[Steve Henson]
+) Initial CRL based revocation checking. If the CRL checking flag(s)
are set then the CRL is looked up in the X509_STORE structure and
its validity and signature checked, then if the certificate is found
in the CRL the verify fails with a revoked error.
Various new CRL related callbacks added to X509_STORE_CTX structure.
Command line options added to 'verify' application to support this.
This needs some additional work, such as being able to handle multiple
CRLs with different times, extension based lookup (rather than just
by subject name) and ultimately more complete V2 CRL extension
handling.
[Steve Henson]
+) Add a general user interface API (crypto/ui/). This is designed
to replace things like des_read_password and friends (backward
compatibility functions using this new API are provided).
The purpose is to remove prompting functions from the DES code
section as well as provide for prompting through dialog boxes in
a window system and the like.
[Richard Levitte]
*) 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.
+) Add "ex_data" support to ENGINE so implementations can add state at a
per-structure level rather than having to store it globally.
[Geoff]
+) Make it possible for ENGINE structures to be copied when retrieved by
ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
This causes the "original" ENGINE structure to act like a template,
analogous to the RSA vs. RSA_METHOD type of separation. Because of this
operational state can be localised to each ENGINE structure, despite the
fact they all share the same "methods". New ENGINE structures returned in
this case have no functional references and the return value is the single
structural reference. This matches the single structural reference returned
by ENGINE_by_id() normally, when it is incremented on the pre-existing
ENGINE structure.
[Geoff]
+) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
needs to match any other type at all we need to manually clear the
tag cache.
[Steve Henson]
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+) Changes to the "openssl engine" utility to include;
- verbosity levels ('-v', '-vv', and '-vvv') that provide information
about an ENGINE's available control commands.
- executing control commands from command line arguments using the
'-pre' and '-post' switches. '-post' is only used if '-t' is
specified and the ENGINE is successfully initialised. The syntax for
the individual commands are colon-separated, for example;
openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
[Geoff]
+) New dynamic control command support for ENGINEs. ENGINEs can now
declare their own commands (numbers), names (strings), descriptions,
and input types for run-time discovery by calling applications. A
subset of these commands are implicitly classed as "executable"
depending on their input type, and only these can be invoked through
the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
can be based on user input, config files, etc). The distinction is
that "executable" commands cannot return anything other than a boolean
result and can only support numeric or string input, whereas some
discoverable commands may only be for direct use through
ENGINE_ctrl(), eg. supporting the exchange of binary data, function
pointers, or other custom uses. The "executable" commands are to
support parameterisations of ENGINE behaviour that can be
unambiguously defined by ENGINEs and used consistently across any
OpenSSL-based application. Commands have been added to all the
existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
control over shared-library paths without source code alterations.
[Geoff]
+) Changed all ENGINE implementations to dynamically allocate their
ENGINEs rather than declaring them statically. Apart from this being
necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
this also allows the implementations to compile without using the
internal engine_int.h header.
[Geoff]
+) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
'const' value. Any code that should be able to modify a RAND_METHOD
should already have non-const pointers to it (ie. they should only
modify their own ones).
[Geoff]
+) Made a variety of little tweaks to the ENGINE code.
- "atalla" and "ubsec" string definitions were moved from header files
to C code. "nuron" string definitions were placed in variables
rather than hard-coded - allowing parameterisation of these values
later on via ctrl() commands.
- Removed unused "#if 0"'d code.
- Fixed engine list iteration code so it uses ENGINE_free() to release
structural references.
- Constified the RAND_METHOD element of ENGINE structures.
- Constified various get/set functions as appropriate and added
missing functions (including a catch-all ENGINE_cpy that duplicates
all ENGINE values onto a new ENGINE except reference counts/state).
- Removed NULL parameter checks in get/set functions. Setting a method
or function to NULL is a way of cancelling out a previously set
value. Passing a NULL ENGINE parameter is just plain stupid anyway
and doesn't justify the extra error symbols and code.
- Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
flags from engine_int.h to engine.h.
- Changed prototypes for ENGINE handler functions (init(), finish(),
ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
[Geoff]
*) Move 'if (!initialized) RAND_poll()' into regions protected by
CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
[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 illegaly release the lock
that they do not hold after the first thread unsets add_do_not_lock).
[Bodo Moeller]
+) Implement binary inversion algorithm for BN_mod_inverse in addition
to the algorithm using long divison. The binary algorithm can be
used only if the modulus is odd. On 32-bit systems, it is faster
only for relatively small moduli (roughly 20-30% for 128-bit moduli,
roughly 5-15% for 256-bit moduli), so we use it only for moduli
up to 450 bits. In 64-bit environments, the binary algorithm
appears to be advantageous for much longer moduli; here we use it
for moduli up to 2048 bits.
*) Change bctest again: '-x' expressions are not available in all
versions of 'test'.
[Bodo Moeller]
-) OpenSSL 0.9.6a released [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]
+) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
could not support the combine flag in choice fields.
[Steve Henson]
-) 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]
*) 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]
+) Add a 'copy_extensions' option to the 'ca' utility. This copies
extensions from a certificate request to the certificate.
[Steve Henson]
+) Allow multiple 'certopt' and 'nameopt' options to be separated
by commas. Add 'namopt' and 'certopt' options to the 'ca' config
file: this allows the display of the certificate about to be
signed to be customised, to allow certain fields to be included
or excluded and extension details. The old system didn't display
multicharacter strings properly, omitted fields not in the policy
and couldn't display additional details such as extensions.
[Steve Henson]
*) Fix memory leaks in err.c: free err_data string if necessary;
don't write to the wrong index in ERR_set_error_data.
+) Function EC_POINTs_mul for simultaneous scalar multiplication
of an arbitrary number of elliptic curve points, optionally
including the generator defined for the EC_GROUP.
EC_POINT_mul is a simple wrapper function for the typical case
that the point list has just one item (besides the optional
generator).
[Bodo Moeller]
+) First EC_METHODs for curves over GF(p):
EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
operations and provides various method functions that can also
operate with faster implementations of modular arithmetic.
EC_GFp_mont_method() reuses most functions that are part of
EC_GFp_simple_method, but uses Montgomery arithmetic.
[Bodo Moeller; point addition and point doubling
implementation directly derived from source code provided by
Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
+) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
crypto/ec/ec_lib.c):
Curves are EC_GROUP objects (with an optional group generator)
based on EC_METHODs that are built into the library.
Points are EC_POINT objects based on EC_GROUP objects.
Most of the framework would be able to handle curves over arbitrary
finite fields, but as there are no obvious types for fields other
than GF(p), some functions are limited to that for now.
[Bodo Moeller]
+) Add the -HTTP option to s_server. It is similar to -WWW, but requires
that the file contains a complete HTTP response.
[Richard Levitte]
+) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
change the def and num file printf format specifier from "%-40sXXX"
to "%-39s XXX". The latter will always guarantee a space after the
field while the former will cause them to run together if the field
is 40 of more characters long.
[Steve Henson]
+) Constify the cipher and digest 'method' functions and structures
and modify related functions to take constant EVP_MD and EVP_CIPHER
pointers.
[Steve Henson]
*) 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>]
+) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
+) Modify EVP_Digest*() routines so they now return values. Although the
internal software routines can never fail additional hardware versions
might.
[Steve Henson]
+) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
(= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
ASN1 error codes
ERR_R_NESTED_ASN1_ERROR
...
ERR_R_MISSING_ASN1_EOS
were 4 .. 9, conflicting with
ERR_LIB_RSA (= ERR_R_RSA_LIB)
...
ERR_LIB_PEM (= ERR_R_PEM_LIB).
They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
Add new error code 'ERR_R_INTERNAL_ERROR'.
[Bodo Moeller]
+) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
+) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
sets the subject name for a new request or supersedes the
subject name in a given request. Formats that can be parsed are
'CN=Some Name, OU=myOU, C=IT'
and
'CN=Some Name/OU=myOU/C=IT'.
Add options '-batch' and '-verbose' to 'openssl req'.
[Massimiliano Pala <madwolf@hackmasters.net>]
*) Make it possible to reuse SSLv2 sessions.
[Richard Levitte]
+) Introduce the possibility to access global variables through
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functions on platform were that's the best way to handle exporting
global variables in shared libraries. To enable this functionality,
one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
"OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
is normally done by Configure or something similar).
To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
in the source file (foo.c) like this:
OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
OPENSSL_IMPLEMENT_GLOBAL(double,bar);
To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
OPENSSL_DECLARE_GLOBAL(int,foo);
#define foo OPENSSL_GLOBAL_REF(foo)
OPENSSL_DECLARE_GLOBAL(double,bar);
#define bar OPENSSL_GLOBAL_REF(bar)
The #defines are very important, and therefore so is including the
header file everywere where the defined globals are used.
The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
of ASN.1 items, but that structure is a bt different.
The largest change is in util/mkdef.pl which has been enhanced with
better and easier to understand logic to choose which symbols should
go into the Windows .def files as well as a number of fixes and code
cleanup (among others, algorithm keywords are now sorted
lexicographically to avoid constant rewrites).
[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>]
+) In BN_div() keep a copy of the sign of 'num' before writing the
result to 'rm' because if rm==num the value will be overwritten
and produce the wrong result if 'num' is negative: this caused
problems with BN_mod() and BN_nnmod().
[Steve Henson]
+) Function OCSP_request_verify(). This checks the signature on an
OCSP request and verifies the signer certificate. The signer
certificate is just checked for a generic purpose and OCSP request
trust settings.
[Steve Henson]
+) Add OCSP_check_validity() function to check the validity of OCSP
responses. OCSP responses are prepared in real time and may only
be a few seconds old. Simply checking that the current time lies
between thisUpdate and nextUpdate max reject otherwise valid responses
caused by either OCSP responder or client clock innacuracy. Instead
we allow thisUpdate and nextUpdate to fall within a certain period of
the current time. The age of the response can also optionally be
checked. Two new options -validity_period and -status_age added to
ocsp utility.
[Steve Henson]
+) If signature or public key algorithm is unrecognized print out its
*) 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]
+) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
ID to be generated from the issuer certificate alone which can then be
passed to OCSP_id_issuer_cmp().
[Steve Henson]
+) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
ASN1 modules to export functions returning ASN1_ITEM pointers
instead of the ASN1_ITEM structures themselves. This adds several
new macros which allow the underlying ASN1 function/structure to
be accessed transparently. As a result code should not use ASN1_ITEM
references directly (such as &X509_it) but instead use the relevant
macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
use of the new ASN1 code on platforms where exporting structures
is problematical (for example in shared libraries) but exporting
functions returning pointers to structures is not.
[Steve Henson]
+) Add support for overriding the generation of SSL/TLS session IDs.
These callbacks can be registered either in an SSL_CTX or per SSL.
The purpose of this is to allow applications to control, if they wish,
the arbitrary values chosen for use as session IDs, particularly as it
can be useful for session caching in multiple-server environments. A
command-line switch for testing this (and any client code that wishes
to use such a feature) has been added to "s_server".
[Geoff Thorpe, Lutz Jaenicke]
+) Modify mkdef.pl to recognise and parse prprocessor conditionals
of the form '#if defined(...) || defined(...) || ...' and
'#if !defined(...) && !defined(...) && ...'. This also avoids
the growing number of special cases it was previously handling.
[Richard Levitte]
*) Don't use getenv in library functions when run as setuid/setgid.
New function OPENSSL_issetugid().
[Ulf Moeller]
+) Make all configuration macros available for application by making
sure they are available in opensslconf.h, by giving them names starting
with "OPENSSL_" to avoid conflicts with other packages and by making
sure e_os2.h will cover all platform-specific cases together with
opensslconf.h.
Additionally, it is now possible to define configuration/platform-
specific names (called "system identities"). In the C code, these
are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
macro with the name beginning with "OPENSSL_SYS_", which is determined
from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
what is available.
[Richard Levitte]
+) New option -set_serial to 'req' and 'x509' this allows the serial
number to use to be specified on the command line. Previously self
signed certificates were hard coded with serial number 0 and the
CA options of 'x509' had to use a serial number in a file which was
auto incremented.
[Steve Henson]
*) 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]
+) New options to 'ca' utility to support V2 CRL entry extensions.
Currently CRL reason, invalidity date and hold instruction are
supported. Add new CRL extensions to V3 code and some new objects.
[Steve Henson]
*) Add "-rand" option also to s_client and s_server.
[Lutz Jaenicke]
+) New function EVP_CIPHER_CTX_set_padding() this is used to
disable standard block padding (aka PKCS#5 padding) in the EVP
API, which was previously mandatory. This means that the data is
not padded in any way and so the total length much be a multiple
of the block size, otherwise an error occurs.
[Steve Henson]
+) Initial (incomplete) OCSP SSL support.
*) Fix CPU detection on Irix 6.x.
[Kurt Hockenbury <khockenb@stevens-tech.edu> and
"Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
+) New function OCSP_parse_url(). This splits up a URL into its host,
port and path components: primarily to parse OCSP URLs. New -url
option to ocsp utility.
[Steve Henson]
+) New nonce behavior. The return value of OCSP_check_nonce() now
reflects the various checks performed. Applications can decide
whether to tolerate certain situations such as an absent nonce
in a response when one was present in a request: the ocsp application
just prints out a warning. New function OCSP_add1_basic_nonce()
this is to allow responders to include a nonce in a response even if
the request is nonce-less.
[Steve Henson]
*) 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]
+) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
skipped when using openssl x509 multiple times on a single input file,
e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
[Bodo Moeller]
+) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
set string type: to handle setting ASN1_TIME structures. Fix ca
utility to correctly initialize revocation date of CRLs.
[Steve Henson]
+) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
Lutz Jänicke
committed
the clients preferred ciphersuites and rather use its own preferences.
Should help to work around M$ SGC (Server Gated Cryptography) bug in
Internet Explorer by ensuring unchanged hash method during stepup.
[Lutz Jaenicke]
+) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
to aes and add a new 'exist' option to print out symbols that don't
appear to exist.
[Steve Henson]
+) Additional options to ocsp utility to allow flags to be set and
additional certificates supplied.
[Steve Henson]
+) Add the option -VAfile to 'openssl ocsp', so the user can give the
OCSP client a number of certificate to only verify the response
signature against.
[Richard Levitte]
*) 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]
+) Update Rijndael code to version 3.0 and change EVP AES ciphers to
handle the new API. Currently only ECB, CBC modes supported. Add new
AES OIDs. Add TLS AES ciphersuites as described in the "AES Ciphersuites
for TLS" draft-ietf-tls-ciphersuite-03.txt.
[Ben Laurie, Steve Henson]
*) 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]
+) New function OCSP_copy_nonce() to copy nonce value (if present) from
request to response.
[Steve Henson]
+) Functions for OCSP responders. OCSP_request_onereq_count(),
OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
extract information from a certificate request. OCSP_response_create()
creates a response and optionally adds a basic response structure.
OCSP_basic_add1_status() adds a complete single response to a basic
reponse and returns the OCSP_SINGLERESP structure just added (to allow
extensions to be included for example). OCSP_basic_add1_cert() adds a
certificate to a basic response and OCSP_basic_sign() signs a basic
response with various flags. New helper functions ASN1_TIME_check()
(checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
(converts ASN1_TIME to GeneralizedTime).
[Steve Henson]
+) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
structure from a certificate. X509_pubkey_digest() digests tha public_key
contents: this is used in various key identifiers.
[Steve Henson]
*) 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 sk_sort() tolerate a NULL argument.
[Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
+) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
passed by the function are trusted implicitly. If any of them signed the
reponse then it is assumed to be valid and is not verified.
[Steve Henson]
-) 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]
+) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
to data. This was previously part of the PKCS7 ASN1 code. This
was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
[Steve Henson, reported by Kenneth R. Robinette
<support@securenetterm.com>]
+) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
routines: without these tracing memory leaks is very painful.
Fix leaks in PKCS12 and PKCS7 routines.
[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]
+) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
effectively meant GeneralizedTime would never be used. Now it
is initialised to -1 but X509_time_adj() now has to check the value
and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
[Steve Henson, reported by Kenneth R. Robinette
<support@securenetterm.com>]
+) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
result in a zero length in the ASN1_INTEGER structure which was
not consistent with the structure when d2i_ASN1_INTEGER() was used
and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
where it did not print out a minus for negative ASN1_INTEGER.
[Steve Henson]
+) Add summary printout to ocsp utility. The various functions which
convert status values to strings have been renamed to:
OCSP_response_status_str(), OCSP_cert_status_str() and
OCSP_crl_reason_str() and are no longer static. New options
to verify nonce values and to disable verification. OCSP response
printout format cleaned up.
[Steve Henson]
+) Add additional OCSP certificate checks. These are those specified
in RFC2560. This consists of two separate checks: the CA of the
certificate being checked must either be the OCSP signer certificate
or the issuer of the OCSP signer certificate. In the latter case the
OCSP signer certificate must contain the OCSP signing extended key
usage. This check is performed by attempting to match the OCSP
signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
in the OCSP_CERTID structures of the response.
[Steve Henson]
+) Initial OCSP certificate verification added to OCSP_basic_verify()
and related routines. This uses the standard OpenSSL certificate
verify routines to perform initial checks (just CA validity) and
to obtain the certificate chain. Then additional checks will be
performed on the chain. Currently the root CA is checked to see
if it is explicitly trusted for OCSP signing. This is used to set
a root CA as a global signing root: that is any certificate that
chains to that CA is an acceptable OCSP signing certificate.
[Steve Henson]
+) New '-extfile ...' option to 'openssl ca' for reading X.509v3
extensions from a separate configuration file.
As when reading extensions from the main configuration file,
the '-extensions ...' option may be used for specifying the
section to use.
[Massimiliano Pala <madwolf@comune.modena.it>]
*) 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>]
+) New OCSP utility. Allows OCSP requests to be generated or
read. The request can be sent to a responder and the output
parsed, outputed or printed in text form. Not complete yet:
still needs to check the OCSP response validity.