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1This file contains the changes for the SSLeay library up to version
20.9.0b. For later changes, see the file "CHANGES".
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3
4 SSLeay CHANGES
5 ______________
6
7Changes between 0.8.x and 0.9.0b
8
910-Apr-1998
10
11I said the next version would go out at easter, and so it shall.
12I expect a 0.9.1 will follow with portability fixes in the next few weeks.
13
14This is a quick, meet the deadline. Look to ssl-users for comments on what
15is new etc.
16
17eric (about to go bushwalking for the 4 day easter break :-)
18
1916-Mar-98
20 - Patch for Cray T90 from Wayne Schroeder <schroede@SDSC.EDU>
21 - Lots and lots of changes
22
2329-Jan-98
24 - ASN1_BIT_STRING_set_bit()/ASN1_BIT_STRING_get_bit() from
25 Goetz Babin-Ebell <babinebell@trustcenter.de>.
26 - SSL_version() now returns SSL2_VERSION, SSL3_VERSION or
27 TLS1_VERSION.
28
297-Jan-98
30 - Finally reworked the cipher string to ciphers again, so it
31 works correctly
32 - All the app_data stuff is now ex_data with funcion calls to access.
33 The index is supplied by a function and 'methods' can be setup
34 for the types that are called on XXX_new/XXX_free. This lets
35 applications get notified on creation and destruction. Some of
36 the RSA methods could be implemented this way and I may do so.
37 - Oh yes, SSL under perl5 is working at the basic level.
38
3915-Dec-97
40 - Warning - the gethostbyname cache is not fully thread safe,
41 but it should work well enough.
42 - Major internal reworking of the app_data stuff. More functions
43 but if you were accessing ->app_data directly, things will
44 stop working.
45 - The perlv5 stuff is working. Currently on message digests,
46 ciphers and the bignum library.
47
489-Dec-97
49 - Modified re-negotiation so that server initated re-neg
50 will cause a SSL_read() to return -1 should retry.
51 The danger otherwise was that the server and the
52 client could end up both trying to read when using non-blocking
53 sockets.
54
554-Dec-97
56 - Lots of small changes
57 - Fix for binaray mode in Windows for the FILE BIO, thanks to
58 Bob Denny <rdenny@dc3.com>
59
6017-Nov-97
61 - Quite a few internal cleanups, (removal of errno, and using macros
62 defined in e_os.h).
63 - A bug in ca.c, pointed out by yasuyuki-ito@d-cruise.co.jp, where
64 the automactic naming out output files was being stuffed up.
65
6629-Oct-97
67 - The Cast5 cipher has been added. MD5 and SHA-1 are now in assember
68 for x86.
69
7021-Oct-97
71 - Fixed a bug in the BIO_gethostbyname() cache.
72
7315-Oct-97
74 - cbc mode for blowfish/des/3des is now in assember. Blowfish asm
75 has also been improved. At this point in time, on the pentium,
76 md5 is %80 faster, the unoptimesed sha-1 is %79 faster,
77 des-cbc is %28 faster, des-ede3-cbc is %9 faster and blowfish-cbc
78 is %62 faster.
79
8012-Oct-97
81 - MEM_BUF_grow() has been fixed so that it always sets the buf->length
82 to the value we are 'growing' to. Think of MEM_BUF_grow() as the
83 way to set the length value correctly.
84
8510-Oct-97
86 - I now hash for certificate lookup on the raw DER encoded RDN (md5).
87 This breaks things again :-(. This is efficent since I cache
88 the DER encoding of the RDN.
89 - The text DN now puts in the numeric OID instead of UNKNOWN.
90 - req can now process arbitary OIDs in the config file.
91 - I've been implementing md5 in x86 asm, much faster :-).
92 - Started sha1 in x86 asm, needs more work.
93 - Quite a few speedups in the BN stuff. RSA public operation
94 has been made faster by caching the BN_MONT_CTX structure.
95 The calulating of the Ai where A*Ai === 1 mod m was rather
96 expensive. Basically a 40-50% speedup on public operations.
97 The RSA speedup is now 15% on pentiums and %20 on pentium
98 pro.
99
10030-Sep-97
101 - After doing some profiling, I added x86 adm for bn_add_words(),
102 which just adds 2 arrays of longs together. A %10 speedup
103 for 512 and 1024 bit RSA on the pentium pro.
104
10529-Sep-97
106 - Converted the x86 bignum assembler to us the perl scripts
107 for generation.
108
10923-Sep-97
110 - If SSL_set_session() is passed a NULL session, it now clears the
111 current session-id.
112
11322-Sep-97
114 - Added a '-ss_cert file' to apps/ca.c. This will sign selfsigned
115 certificates.
116 - Bug in crypto/evp/encode.c where by decoding of 65 base64
117 encoded lines, one line at a time (via a memory BIO) would report
118 EOF after the first line was decoded.
119 - Fix in X509_find_by_issuer_and_serial() from
120 Dr Stephen Henson <shenson@bigfoot.com>
121
12219-Sep-97
123 - NO_FP_API and NO_STDIO added.
124 - Put in sh config command. It auto runs Configure with the correct
125 parameters.
126
12718-Sep-97
128 - Fix x509.c so if a DSA cert has different parameters to its parent,
129 they are left in place. Not tested yet.
130
13116-Sep-97
132 - ssl_create_cipher_list() had some bugs, fixes from
133 Patrick Eisenacher <eisenach@stud.uni-frankfurt.de>
134 - Fixed a bug in the Base64 BIO, where it would return 1 instead
135 of -1 when end of input was encountered but should retry.
136 Basically a Base64/Memory BIO interaction problem.
137 - Added a HMAC set of functions in preporarion for TLS work.
138
13915-Sep-97
140 - Top level makefile tweak - Cameron Simpson <cs@zip.com.au>
141 - Prime generation spead up %25 (512 bit prime, pentium pro linux)
142 by using montgomery multiplication in the prime number test.
143
14411-Sep-97
145 - Ugly bug in ssl3_write_bytes(). Basically if application land
146 does a SSL_write(ssl,buf,len) where len > 16k, the SSLv3 write code
147 did not check the size and tried to copy the entire buffer.
148 This would tend to cause memory overwrites since SSLv3 has
149 a maximum packet size of 16k. If your program uses
150 buffers <= 16k, you would probably never see this problem.
9990cb75 151 - Fixed a few errors that were cause by malloc() not returning
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152 0 initialised memory..
153 - SSL_OP_NETSCAPE_CA_DN_BUG was being switched on when using
154 SSL_CTX_set_options(ssl_ctx,SSL_OP_ALL); which was a bad thing
155 since this flags stops SSLeay being able to handle client
156 cert requests correctly.
157
15808-Sep-97
159 - SSL_SESS_CACHE_NO_INTERNAL_LOOKUP option added. When switched
160 on, the SSL server routines will not use a SSL_SESSION that is
161 held in it's cache. This in intended to be used with the session-id
162 callbacks so that while the session-ids are still stored in the
163 cache, the decision to use them and how to look them up can be
164 done by the callbacks. The are the 'new', 'get' and 'remove'
165 callbacks. This can be used to determine the session-id
166 to use depending on information like which port/host the connection
167 is coming from. Since the are also SSL_SESSION_set_app_data() and
168 SSL_SESSION_get_app_data() functions, the application can hold
169 information against the session-id as well.
170
17103-Sep-97
172 - Added lookup of CRLs to the by_dir method,
173 X509_load_crl_file() also added. Basically it means you can
174 lookup CRLs via the same system used to lookup certificates.
175 - Changed things so that the X509_NAME structure can contain
176 ASN.1 BIT_STRINGS which is required for the unique
177 identifier OID.
178 - Fixed some problems with the auto flushing of the session-id
179 cache. It was not occuring on the server side.
180
18102-Sep-97
182 - Added SSL_CTX_sess_cache_size(SSL_CTX *ctx,unsigned long size)
183 which is the maximum number of entries allowed in the
184 session-id cache. This is enforced with a simple FIFO list.
185 The default size is 20*1024 entries which is rather large :-).
186 The Timeout code is still always operating.
187
18801-Sep-97
189 - Added an argument to all the 'generate private key/prime`
190 callbacks. It is the last parameter so this should not
191 break existing code but it is needed for C++.
192 - Added the BIO_FLAGS_BASE64_NO_NL flag for the BIO_f_base64()
193 BIO. This lets the BIO read and write base64 encoded data
194 without inserting or looking for '\n' characters. The '-A'
195 flag turns this on when using apps/enc.c.
196 - RSA_NO_PADDING added to help BSAFE functionality. This is a
197 very dangerous thing to use, since RSA private key
198 operations without random padding bytes (as PKCS#1 adds) can
199 be attacked such that the private key can be revealed.
200 - ASN.1 bug and rc2-40-cbc and rc4-40 added by
201 Dr Stephen Henson <shenson@bigfoot.com>
202
20331-Aug-97 (stuff added while I was away)
204 - Linux pthreads by Tim Hudson (tjh@cryptsoft.com).
205 - RSA_flags() added allowing bypass of pub/priv match check
206 in ssl/ssl_rsa.c - Tim Hudson.
207 - A few minor bugs.
208
209SSLeay 0.8.1 released.
210
21119-Jul-97
212 - Server side initated dynamic renegotiation is broken. I will fix
213 it when I get back from holidays.
214
21515-Jul-97
216 - Quite a few small changes.
217 - INVALID_SOCKET usage cleanups from Alex Kiernan <alex@hisoft.co.uk>
218
21909-Jul-97
220 - Added 2 new values to the SSL info callback.
221 SSL_CB_START which is passed when the SSL protocol is started
222 and SSL_CB_DONE when it has finished sucsessfully.
223
22408-Jul-97
225 - Fixed a few bugs problems in apps/req.c and crypto/asn1/x_pkey.c
226 that related to DSA public/private keys.
227 - Added all the relevent PEM and normal IO functions to support
228 reading and writing RSAPublic keys.
229 - Changed makefiles to use ${AR} instead of 'ar r'
230
23107-Jul-97
232 - Error in ERR_remove_state() that would leave a dangling reference
233 to a free()ed location - thanks to Alex Kiernan <alex@hisoft.co.uk>
234 - s_client now prints the X509_NAMEs passed from the server
235 when requesting a client cert.
236 - Added a ssl->type, which is one of SSL_ST_CONNECT or
237 SSL_ST_ACCEPT. I had to add it so I could tell if I was
238 a connect or an accept after the handshake had finished.
239 - SSL_get_client_CA_list(SSL *s) now returns the CA names
240 passed by the server if called by a client side SSL.
241
24205-Jul-97
243 - Bug in X509_NAME_get_text_by_OBJ(), looking starting at index
244 0, not -1 :-( Fix from Tim Hudson (tjh@cryptsoft.com).
245
24604-Jul-97
247 - Fixed some things in X509_NAME_add_entry(), thanks to
248 Matthew Donald <matthew@world.net>.
249 - I had a look at the cipher section and though that it was a
250 bit confused, so I've changed it.
251 - I was not setting up the RC4-64-MD5 cipher correctly. It is
252 a MS special that appears in exported MS Money.
253 - Error in all my DH ciphers. Section 7.6.7.3 of the SSLv3
254 spec. I was missing the two byte length header for the
255 ClientDiffieHellmanPublic value. This is a packet sent from
256 the client to the server. The SSL_OP_SSLEAY_080_CLIENT_DH_BUG
257 option will enable SSLeay server side SSLv3 accept either
258 the correct or my 080 packet format.
259 - Fixed a few typos in crypto/pem.org.
260
26102-Jul-97
262 - Alias mapping for EVP_get_(digest|cipher)byname is now
263 performed before a lookup for actual cipher. This means
264 that an alias can be used to 're-direct' a cipher or a
265 digest.
266 - ASN1_read_bio() had a bug that only showed up when using a
267 memory BIO. When EOF is reached in the memory BIO, it is
268 reported as a -1 with BIO_should_retry() set to true.
269
27001-Jul-97
271 - Fixed an error in X509_verify_cert() caused by my
272 miss-understanding how 'do { contine } while(0);' works.
273 Thanks to Emil Sit <sit@mit.edu> for educating me :-)
274
27530-Jun-97
276 - Base64 decoding error. If the last data line did not end with
277 a '=', sometimes extra data would be returned.
278 - Another 'cut and paste' bug in x509.c related to setting up the
279 STDout BIO.
280
28127-Jun-97
282 - apps/ciphers.c was not printing due to an editing error.
283 - Alex Kiernan <alex@hisoft.co.uk> send in a nice fix for
284 a library build error in util/mk1mf.pl
285
28626-Jun-97
287 - Still did not have the auto 'experimental' code removal
288 script correct.
289 - A few header tweaks for Watcom 11.0 under Win32 from
290 Rolf Lindemann <Lindemann@maz-hh.de>
291 - 0 length OCTET_STRING bug in asn1_parse
292 - A minor fix with an non-existent function in the MS .def files.
293 - A few changes to the PKCS7 stuff.
294
29525-Jun-97
296 SSLeay 0.8.0 finally it gets released.
297
29824-Jun-97
299 Added a SSL_OP_EPHEMERAL_RSA option which causes all SSLv3 RSA keys to
300 use a temporary RSA key. This is experimental and needs some more work.
301 Fixed a few Win16 build problems.
302
30323-Jun-97
304 SSLv3 bug. I was not doing the 'lookup' of the CERT structure
305 correctly. I was taking the SSL->ctx->default_cert when I should
306 have been using SSL->cert. The bug was in ssl/s3_srvr.c
307
30820-Jun-97
309 X509_ATTRIBUTES were being encoded wrongly by apps/reg.c and the
310 rest of the library. Even though I had the code required to do
311 it correctly, apps/req.c was doing the wrong thing. I have fixed
312 and tested everything.
313
314 Missing a few #ifdef FIONBIO sections in crypto/bio/bss_acpt.c.
315
31619-Jun-97
317 Fixed a bug in the SSLv2 server side first packet handling. When
318 using the non-blocking test BIO, the ssl->s2->first_packet flag
319 was being reset when a would-block failure occurred when reading
320 the first 5 bytes of the first packet. This caused the checking
321 logic to run at the wrong time and cause an error.
322
323 Fixed a problem with specifying cipher. If RC4-MD5 were used,
324 only the SSLv3 version would be picked up. Now this will pick
325 up both SSLv2 and SSLv3 versions. This required changing the
326 SSL_CIPHER->mask values so that they only mask the ciphers,
327 digests, authentication, export type and key-exchange algorithms.
328
329 I found that when a SSLv23 session is established, a reused
330 session, of type SSLv3 was attempting to write the SSLv2
331 ciphers, which were invalid. The SSL_METHOD->put_cipher_by_char
332 method has been modified so it will only write out cipher which
333 that method knows about.
334
335
336 Changes between 0.8.0 and 0.8.1
337
338 *) Mostly bug fixes.
339 There is an Ephemeral DH cipher problem which is fixed.
340
341 SSLeay 0.8.0
342
343This version of SSLeay has quite a lot of things different from the
344previous version.
345
346Basically check all callback parameters, I will be producing documentation
347about how to use things in th future. Currently I'm just getting 080 out
348the door. Please not that there are several ways to do everything, and
349most of the applications in the apps directory are hybrids, some using old
350methods and some using new methods.
351
352Have a look in demos/bio for some very simple programs and
353apps/s_client.c and apps/s_server.c for some more advanced versions.
354Notes are definitly needed but they are a week or so away.
355
356Anyway, some quick nots from Tim Hudson (tjh@cryptsoft.com)
357---
358Quick porting notes for moving from SSLeay-0.6.x to SSLeay-0.8.x to
359get those people that want to move to using the new code base off to
360a quick start.
361
362Note that Eric has tidied up a lot of the areas of the API that were
363less than desirable and renamed quite a few things (as he had to break
364the API in lots of places anyrate). There are a whole pile of additional
365functions for making dealing with (and creating) certificates a lot
366cleaner.
367
36801-Jul-97
369Tim Hudson
370tjh@cryptsoft.com
371
372---8<---
373
374To maintain code that uses both SSLeay-0.6.x and SSLeay-0.8.x you could
375use something like the following (assuming you #include "crypto.h" which
376is something that you really should be doing).
377
378#if SSLEAY_VERSION_NUMBER >= 0x0800
379#define SSLEAY8
380#endif
381
382buffer.h -> splits into buffer.h and bio.h so you need to include bio.h
383 too if you are working with BIO internal stuff (as distinct
384 from simply using the interface in an opaque manner)
385
386#include "bio.h" - required along with "buffer.h" if you write
387 your own BIO routines as the buffer and bio
388 stuff that was intermixed has been separated
389 out
390
391envelope.h -> evp.h (which should have been done ages ago)
392
393Initialisation ... don't forget these or you end up with code that
394is missing the bits required to do useful things (like ciphers):
395
396SSLeay_add_ssl_algorithms()
397(probably also want SSL_load_error_strings() too but you should have
398 already had that call in place)
399
400SSL_CTX_new() - requires an extra method parameter
401 SSL_CTX_new(SSLv23_method())
402 SSL_CTX_new(SSLv2_method())
403 SSL_CTX_new(SSLv3_method())
404
405 OR to only have the server or the client code
406 SSL_CTX_new(SSLv23_server_method())
407 SSL_CTX_new(SSLv2_server_method())
408 SSL_CTX_new(SSLv3_server_method())
409 or
410 SSL_CTX_new(SSLv23_client_method())
411 SSL_CTX_new(SSLv2_client_method())
412 SSL_CTX_new(SSLv3_client_method())
413
414SSL_set_default_verify_paths() ... renamed to the more appropriate
415SSL_CTX_set_default_verify_paths()
416
417If you want to use client certificates then you have to add in a bit
418of extra stuff in that a SSLv3 server sends a list of those CAs that
419it will accept certificates from ... so you have to provide a list to
420SSLeay otherwise certain browsers will not send client certs.
421
422SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(s_cert_file));
423
424
425X509_NAME_oneline(X) -> X509_NAME_oneline(X,NULL,0)
426 or provide a buffer and size to copy the
427 result into
428
429X509_add_cert -> X509_STORE_add_cert (and you might want to read the
430 notes on X509_NAME structure changes too)
431
432
433VERIFICATION CODE
434=================
435
436The codes have all be renamed from VERIFY_ERR_* to X509_V_ERR_* to
437more accurately reflect things.
438
439The verification callback args are now packaged differently so that
440extra fields for verification can be added easily in future without
441having to break things by adding extra parameters each release :-)
442
443X509_cert_verify_error_string -> X509_verify_cert_error_string
444
445
446BIO INTERNALS
447=============
448
449Eric has fixed things so that extra flags can be introduced in
450the BIO layer in future without having to play with all the BIO
451modules by adding in some macros.
452
453The ugly stuff using
454 b->flags ~= (BIO_FLAGS_RW|BIO_FLAGS_SHOULD_RETRY)
455becomes
456 BIO_clear_retry_flags(b)
457
458 b->flags |= (BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY)
459becomes
460 BIO_set_retry_read(b)
461
462Also ... BIO_get_retry_flags(b), BIO_set_flags(b)
463
464
465
466OTHER THINGS
467============
468
469X509_NAME has been altered so that it isn't just a STACK ... the STACK
470is now in the "entries" field ... and there are a pile of nice functions
471for getting at the details in a much cleaner manner.
472
473SSL_CTX has been altered ... "cert" is no longer a direct member of this
474structure ... things are now down under "cert_store" (see x509_vfy.h) and
475things are no longer in a CERTIFICATE_CTX but instead in a X509_STORE.
476If your code "knows" about this level of detail then it will need some
477surgery.
478
479If you depending on the incorrect spelling of a number of the error codes
480then you will have to change your code as these have been fixed.
481
482ENV_CIPHER "type" got renamed to "nid" and as that is what it actually
483has been all along so this makes things clearer.
484ify_cert_error_string(ctx->error));
485
486SSL_R_NO_CIPHER_WE_TRUST -> SSL_R_NO_CIPHER_LIST
487 and SSL_R_REUSE_CIPHER_LIST_NOT_ZERO
488
489
490
491 Changes between 0.7.x and 0.8.0
492
493 *) There have been lots of changes, mostly the addition of SSLv3.
494 There have been many additions from people and amongst
495 others, C2Net has assisted greatly.
496
497 Changes between 0.7.x and 0.7.x
498
499 *) Internal development version only
500
501SSLeay 0.6.6 13-Jan-1997
502
503The main additions are
504
505- assember for x86 DES improvments.
506 From 191,000 per second on a pentium 100, I now get 281,000. The inner
507 loop and the IP/FP modifications are from
508 Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>. Many thanks for his
509 contribution.
510- The 'DES macros' introduced in 0.6.5 now have 3 types.
511 DES_PTR1, DES_PTR2 and 'normal'. As per before, des_opts reports which
512 is best and there is a summery of mine in crypto/des/options.txt
513- A few bug fixes.
514- Added blowfish. It is not used by SSL but all the other stuff that
515 deals with ciphers can use it in either ecb, cbc, cfb64 or ofb64 modes.
516 There are 3 options for optimising Blowfish. BF_PTR, BF_PTR2 and 'normal'.
517 BF_PTR2 is pentium/x86 specific. The correct option is setup in
518 the 'Configure' script.
519- There is now a 'get client certificate' callback which can be
520 'non-blocking'. If more details are required, let me know. It will
521 documented more in SSLv3 when I finish it.
522- Bug fixes from 0.6.5 including the infamous 'ca' bug. The 'make test'
523 now tests the ca program.
524- Lots of little things modified and tweaked.
525
526 SSLeay 0.6.5
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527
528After quite some time (3 months), the new release. I have been very busy
529for the last few months and so this is mostly bug fixes and improvments.
530
531The main additions are
532
533- assember for x86 DES. For all those gcc based systems, this is a big
534 improvement. From 117,000 DES operation a second on a pentium 100,
535 I now get 191,000. I have also reworked the C version so it
536 now gives 148,000 DESs per second.
537- As mentioned above, the inner DES macros now have some more variant that
538 sometimes help, sometimes hinder performance. There are now 3 options
539 DES_PTR (ptr vs array lookup), DES_UNROLL (full vs partial loop unrolling)
540 and DES_RISC (a more register intensive version of the inner macro).
541 The crypto/des/des_opts.c program, when compiled and run, will give
542 an indication of the correct options to use.
543- The BIO stuff has been improved. Read doc/bio.doc. There are now
544 modules for encryption and base64 encoding and a BIO_printf() function.
545- The CA program will accept simple one line X509v3 extensions in the
546 ssleay.cnf file. Have a look at the example. Currently this just
547 puts the text into the certificate as an OCTET_STRING so currently
548 the more advanced X509v3 data types are not handled but this is enough
549 for the netscape extensions.
550- There is the start of a nicer higher level interface to the X509
551 strucutre.
552- Quite a lot of bug fixes.
553- CRYPTO_malloc_init() (or CRYPTO_set_mem_functions()) can be used
554 to define the malloc(), free() and realloc() routines to use
555 (look in crypto/crypto.h). This is mostly needed for Windows NT/95 when
556 using DLLs and mixing CRT libraries.
557
558In general, read the 'VERSION' file for changes and be aware that some of
559the new stuff may not have been tested quite enough yet, so don't just plonk
560in SSLeay 0.6.5 when 0.6.4 used to work and expect nothing to break.
561
562SSLeay 0.6.4 30/08/96 eay
563
564I've just finished some test builds on Windows NT, Windows 3.1, Solaris 2.3,
565Solaris 2.5, Linux, IRIX, HPUX 10 and everthing seems to work :-).
566
567The main changes in this release
568
569- Thread safe. have a read of doc/threads.doc and play in the mt directory.
570 For anyone using 0.6.3 with threads, I found 2 major errors so consider
571 moving to 0.6.4. I have a test program that builds under NT and
572 solaris.
573- The get session-id callback has changed. Have a read of doc/callback.doc.
574- The X509_cert_verify callback (the SSL_verify callback) now
575 has another argument. Have a read of doc/callback.doc
576- 'ca -preserve', sign without re-ordering the DN. Not tested much.
577- VMS support.
578- Compile time memory leak detection can now be built into SSLeay.
579 Read doc/memory.doc
580- CONF routines now understand '\', '\n', '\r' etc. What this means is that
581 the SPKAC object mentioned in doc/ns-ca.doc can be on multiple lines.
582- 'ssleay ciphers' added, lists the default cipher list for SSLeay.
583- RC2 key setup is now compatable with Netscape.
584- Modifed server side of SSL implementation, big performance difference when
651d0aff 585 using session-id reuse.
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586
5870.6.3
588
589Bug fixes and the addition of some nice stuff to the 'ca' program.
590Have a read of doc/ns-ca.doc for how hit has been modified so
591it can be driven from a CGI script. The CGI script is not provided,
592but that is just being left as an excersize for the reader :-).
593
5940.6.2
595
596This is most bug fixes and functionality improvements.
597
598Additions are
599- More thread debugging patches, the thread stuff is still being
600 tested, but for those keep to play with stuff, have a look in
601 crypto/cryptlib.c. The application needs to define 1 (or optionaly
602 a second) callback that is used to implement locking. Compiling
603 with LOCK_DEBUG spits out lots of locking crud :-).
604 This is what I'm currently working on.
605- SSL_CTX_set_default_passwd_cb() can be used to define the callback
606 function used in the SSL*_file() functions used to load keys. I was
607 always of the opinion that people should call
608 PEM_read_RSAPrivateKey() and pass the callback they want to use, but
609 it appears they just want to use the SSL_*_file() function() :-(.
610- 'enc' now has a -kfile so a key can be read from a file. This is
611 mostly used so that the passwd does not appear when using 'ps',
612 which appears imposible to stop under solaris.
613- X509v3 certificates now work correctly. I even have more examples
614 in my tests :-). There is now a X509_EXTENSION type that is used in
615 X509v3 certificates and CRLv2.
616- Fixed that signature type error :-(
617- Fixed quite a few potential memory leaks and problems when reusing
618 X509, CRL and REQ structures.
619- EVP_set_pw_prompt() now sets the library wide default password
620 prompt.
621- The 'pkcs7' command will now, given the -print_certs flag, output in
622 pem format, all certificates and CRL contained within. This is more
623 of a pre-emtive thing for the new verisign distribution method. I
624 should also note, that this also gives and example in code, of how
625 to do this :-), or for that matter, what is involved in going the
626 other way (list of certs and crl -> pkcs7).
627- Added RSA's DESX to the DES library. It is also available via the
628 EVP_desx_cbc() method and via 'enc desx'.
629
630SSLeay 0.6.1
631
632The main functional changes since 0.6.0 are as follows
633- Bad news, the Microsoft 060 DLL's are not compatable, but the good news is
634 that from now on, I'll keep the .def numbers the same so they will be.
635- RSA private key operations are about 2 times faster that 0.6.0
636- The SSL_CTX now has more fields so default values can be put against
637 it. When an SSL structure is created, these default values are used
638 but can be overwritten. There are defaults for cipher, certificate,
639 private key, verify mode and callback. This means SSL session
640 creation can now be
641 ssl=SSL_new()
642 SSL_set_fd(ssl,sock);
643 SSL_accept(ssl)
644 ....
645 All the other uglyness with having to keep a global copy of the
646 private key and certificate/verify mode in the server is now gone.
647- ssl/ssltest.c - one process talking SSL to its self for testing.
648- Storage of Session-id's can be controled via a session_cache_mode
649 flag. There is also now an automatic default flushing of
650 old session-id's.
651- The X509_cert_verify() function now has another parameter, this
652 should not effect most people but it now means that the reason for
653 the failure to verify is now available via SSL_get_verify_result(ssl).
654 You don't have to use a global variable.
655- SSL_get_app_data() and SSL_set_app_data() can be used to keep some
656 application data against the SSL structure. It is upto the application
657 to free the data. I don't use it, but it is available.
658- SSL_CTX_set_cert_verify_callback() can be used to specify a
659 verify callback function that completly replaces my certificate
660 verification code. Xcert should be able to use this :-).
661 The callback is of the form int app_verify_callback(arg,ssl,cert).
662 This needs to be documented more.
663- I have started playing with shared library builds, have a look in
664 the shlib directory. It is very simple. If you need a numbered
665 list of functions, have a look at misc/crypto.num and misc/ssl.num.
666- There is some stuff to do locking to make the library thread safe.
667 I have only started this stuff and have not finished. If anyone is
668 keen to do so, please send me the patches when finished.
669
670So I have finally made most of the additions to the SSL interface that
671I thought were needed.
672
673There will probably be a pause before I make any non-bug/documentation
674related changes to SSLeay since I'm feeling like a bit of a break.
675
676eric - 12 Jul 1996
677I saw recently a comment by some-one that we now seem to be entering
678the age of perpetual Beta software.
679Pioneered by packages like linux but refined to an art form by
680netscape.
681
682I too wish to join this trend with the anouncement of SSLeay 0.6.0 :-).
683
684There are quite a large number of sections that are 'works in
685progress' in this package. I will also list the major changes and
686what files you should read.
687
688BIO - this is the new IO structure being used everywhere in SSLeay. I
689started out developing this because of microsoft, I wanted a mechanism
690to callback to the application for all IO, so Windows 3.1 DLL
691perversion could be hidden from me and the 15 different ways to write
692to a file under NT would also not be dictated by me at library build
693time. What the 'package' is is an API for a data structure containing
694functions. IO interfaces can be written to conform to the
695specification. This in not intended to hide the underlying data type
696from the application, but to hide it from SSLeay :-).
697I have only really finished testing the FILE * and socket/fd modules.
698There are also 'filter' BIO's. Currently I have only implemented
699message digests, and it is in use in the dgst application. This
700functionality will allow base64/encrypto/buffering modules to be
701'push' into a BIO without it affecting the semantics. I'm also
702working on an SSL BIO which will hide the SSL_accept()/SLL_connet()
703from an event loop which uses the interface.
704It is also possible to 'attach' callbacks to a BIO so they get called
705before and after each operation, alowing extensive debug output
706to be generated (try running dgst with -d).
707
708Unfortunaly in the conversion from 0.5.x to 0.6.0, quite a few
709functions that used to take FILE *, now take BIO *.
710The wrappers are easy to write
711
712function_fp(fp,x)
713FILE *fp;
651d0aff
RE
714 {
715 BIO *b;
716 int ret;
717
718 if ((b=BIO_new(BIO_s_file())) == NULL) error.....
719 BIO_set_fp(b,fp,BIO_NOCLOSE);
720 ret=function_bio(b,x);
721 BIO_free(b);
722 return(ret);
723 }
d02b48c6
RE
724Remember, there are no functions that take FILE * in SSLeay when
725compiled for Windows 3.1 DLL's.
726
727--
728I have added a general EVP_PKEY type that can hold a public/private
729key. This is now what is used by the EVP_ functions and is passed
730around internally. I still have not done the PKCS#8 stuff, but
731X509_PKEY is defined and waiting :-)
732
733--
734For a full function name listings, have a look at ms/crypt32.def and
735ms/ssl32.def. These are auto-generated but are complete.
736Things like ASN1_INTEGER_get() have been added and are in here if you
737look. I have renamed a few things, again, have a look through the
738function list and you will probably find what you are after. I intend
739to at least put a one line descrition for each one.....
740
741--
742Microsoft - thats what this release is about, read the MICROSOFT file.
743
744--
745Multi-threading support. I have started hunting through the code and
746flaging where things need to be done. In a state of work but high on
747the list.
748
749--
750For random numbers, edit e_os.h and set DEVRANDOM (it's near the top)
751be be you random data device, otherwise 'RFILE' in e_os.h
752will be used, in your home directory. It will be updated
753periodically. The environment variable RANDFILE will override this
754choice and read/write to that file instead. DEVRANDOM is used in
755conjunction to the RFILE/RANDFILE. If you wish to 'seed' the random
756number generator, pick on one of these files.
757
758--
759
760The list of things to read and do
761
762dgst -d
763s_client -state (this uses a callback placed in the SSL state loop and
651d0aff
RE
764 will be used else-where to help debug/monitor what
765 is happening.)
d02b48c6
RE
766
767doc/why.doc
768doc/bio.doc <- hmmm, needs lots of work.
769doc/bss_file.doc <- one that is working :-)
770doc/session.doc <- it has changed
771doc/speed.doc
772 also play with ssleay version -a. I have now added a SSLeay()
773 function that returns a version number, eg 0600 for this release
774 which is primarily to be used to check DLL version against the
775 application.
776util/* Quite a few will not interest people, but some may, like
777 mk1mf.pl, mkdef.pl,
778util/do_ms.sh
779
780try
781cc -Iinclude -Icrypto -c crypto/crypto.c
782cc -Iinclude -Issl -c ssl/ssl.c
783You have just built the SSLeay libraries as 2 object files :-)
784
785Have a general rummage around in the bin stall directory and look at
786what is in there, like CA.sh and c_rehash
787
788There are lots more things but it is 12:30am on a Friday night and I'm
789heading home :-).
790
791eric 22-Jun-1996
792This version has quite a few major bug fixes and improvements. It DOES NOT
793do SSLv3 yet.
794
795The main things changed
796- A Few days ago I added the s_mult application to ssleay which is
797 a demo of an SSL server running in an event loop type thing.
798 It supports non-blocking IO, I have finally gotten it right, SSL_accept()
799 can operate in non-blocking IO mode, look at the code to see how :-).
800 Have a read of doc/s_mult as well. This program leaks memory and
801 file descriptors everywhere but I have not cleaned it up yet.
802 This is a demo of how to do non-blocking IO.
803- The SSL session management has been 'worked over' and there is now
804 quite an expansive set of functions to manipulate them. Have a read of
805 doc/session.doc for some-things I quickly whipped up about how it now works.
806 This assume you know the SSLv2 protocol :-)
807- I can now read/write the netscape certificate format, use the
808 -inform/-outform 'net' options to the x509 command. I have not put support
809 for this type in the other demo programs, but it would be easy to add.
810- asn1parse and 'enc' have been modified so that when reading base64
811 encoded files (pem format), they do not require '-----BEGIN' header lines.
812 The 'enc' program had a buffering bug fixed, it can be used as a general
813 base64 -> binary -> base64 filter by doing 'enc -a -e' and 'enc -a -d'
814 respecivly. Leaving out the '-a' flag in this case makes the 'enc' command
815 into a form of 'cat'.
816- The 'x509' and 'req' programs have been fixed and modified a little so
817 that they generate self-signed certificates correctly. The test
818 script actually generates a 'CA' certificate and then 'signs' a
819 'user' certificate. Have a look at this shell script (test/sstest)
820 to see how things work, it tests most possible combinations of what can
821 be done.
822- The 'SSL_set_pref_cipher()' function has been 'fixed' and the prefered name
823 of SSL_set_cipher_list() is now the correct API (stops confusion :-).
824 If this function is used in the client, only the specified ciphers can
825 be used, with preference given to the order the ciphers were listed.
826 For the server, if this is used, only the specified ciphers will be used
827 to accept connections. If this 'option' is not used, a default set of
828 ciphers will be used. The SSL_CTX_set_cipher_list(SSL_CTX *ctx) sets this
829 list for all ciphers started against the SSL_CTX. So the order is
830 SSL cipher_list, if not present, SSL_CTX cipher list, if not
831 present, then the library default.
832 What this means is that normally ciphers like
833 NULL-MD5 will never be used. The only way this cipher can be used
834 for both ends to specify to use it.
835 To enable or disable ciphers in the library at build time, modify the
836 first field for the cipher in the ssl_ciphers array in ssl/ssl_lib.c.
837 This file also contains the 'pref_cipher' list which is the default
838 cipher preference order.
839- I'm not currently sure if the 'rsa -inform net' and the 'rsa -outform net'
840 options work. They should, and they enable loading and writing the
841 netscape rsa private key format. I will be re-working this section of
842 SSLeay for the next version. What is currently in place is a quick and
843 dirty hack.
844- I've re-written parts of the bignum library. This gives speedups
845 for all platforms. I now provide assembler for use under Windows NT.
846 I have not tested the Windows 3.1 assembler but it is quite simple code.
847 This gives RSAprivate_key operation encryption times of 0.047s (512bit key)
848 and 0.230s (1024bit key) on a pentium 100 which I consider reasonable.
849 Basically the times available under linux/solaris x86 can be achieve under
850 Windows NT. I still don't know how these times compare to RSA's BSAFE
851 library but I have been emailing with people and with their help, I should
852 be able to get my library's quite a bit faster still (more algorithm changes).
853 The object file crypto/bn/asm/x86-32.obj should be used when linking
854 under NT.
855- 'make makefile.one' in the top directory will generate a single makefile
856 called 'makefile.one' This makefile contains no perl references and
857 will build the SSLeay library into the 'tmp' and 'out' directories.
858 util/mk1mf.pl >makefile.one is how this makefile is
859 generated. The mk1mf.pl command take several option to generate the
860 makefile for use with cc, gcc, Visual C++ and Borland C++. This is
861 still under development. I have only build .lib's for NT and MSDOS
862 I will be working on this more. I still need to play with the
863 correct compiler setups for these compilers and add some more stuff but
864 basically if you just want to compile the library
865 on a 'non-unix' platform, this is a very very good file to start with :-).
866 Have a look in the 'microsoft' directory for my current makefiles.
867 I have not yet modified things to link with sockets under Windows NT.
868 You guys should be able to do this since this is actually outside of the
869 SSLeay scope :-). I will be doing it for myself soon.
870 util/mk1mf.pl takes quite a few options including no-rc, rsaref and no-sock
871 to build without RC2/RC4, to require RSAref for linking, and to
872 build with no socket code.
873
874- Oh yes, the cipher that was reported to be compatible with RSA's RC2 cipher
875 that was posted to sci.crypt has been added to the library and SSL.
876 I take the view that if RC2 is going to be included in a standard,
877 I'll include the cipher to make my package complete.
878 There are NO_RC2, NO_RC4 and NO_IDEA macros to remove these ciphers
879 at compile time. I have not tested this recently but it should all work
880 and if you are in the USA and don't want RSA threatening to sue you,
881 you could probably remove the RC4/RC2 code inside these sections.
882 I may in the future include a perl script that does this code
883 removal automatically for those in the USA :-).
884- I have removed all references to sed in the makefiles. So basically,
885 the development environment requires perl and sh. The build environment
886 does not (use the makefile.one makefile).
887 The Configure script still requires perl, this will probably stay that way
888 since I have perl for Windows NT :-).
889
890eric (03-May-1996)
891
892PS Have a look in the VERSION file for more details on the changes and
893 bug fixes.
894I have fixed a few bugs, added alpha and x86 assembler and generally cleaned
895things up. This version will be quite stable, mostly because I'm on
896holidays until 10-March-1996. For any problems in the interum, send email
897to Tim Hudson <tjh@mincom.oz.au>.
898
899SSLeay 0.5.0
900
90112-12-95
902This is going out before it should really be released.
903
904I leave for 11 weeks holidays on the 22-12-95 and so I either sit on
905this for 11 weeks or get things out. It is still going to change a
906lot in the next week so if you do grab this version, please test and
907give me feed back ASAP, inculuding questions on how to do things with
908the library. This will prompt me to write documentation so I don't
909have to answer the same question again :-).
910
911This 'pre' release version is for people who are interested in the
912library. The applications will have to be changed to use
913the new version of the SSL interface. I intend to finish more
914documentation before I leave but until then, look at the programs in
915the apps directory. As far as code goes, it is much much nicer than
916the old version.
917
918The current library works, has no memory leaks (as far as I can tell)
919and is far more bug free that 0.4.5d. There are no global variable of
920consequence (I believe) and I will produce some documentation that
921tell where to look for those people that do want to do multi-threaded
922stuff.
923
924There should be more documentation. Have a look in the
925doc directory. I'll be adding more before I leave, it is a start
926by mostly documents the crypto library. Tim Hudson will update
927the web page ASAP. The spelling and grammar are crap but
928it is better than nothing :-)
929
930Reasons to start playing with version 0.5.0
931- All the programs in the apps directory build into one ssleay binary.
932- There is a new version of the 'req' program that generates certificate
933 requests, there is even documentation for this one :-)
934- There is a demo certification authorithy program. Currently it will
935 look at the simple database and update it. It will generate CRL from
936 the data base. You need to edit the database by hand to revoke a
937 certificate, it is my aim to use perl5/Tk but I don't have time to do
938 this right now. It will generate the certificates but the management
939 scripts still need to be written. This is not a hard task.
940- Things have been cleaned up alot.
941- Have a look at the enc and dgst programs in the apps directory.
942- It supports v3 of x509 certiticates.
943
944
945Major things missing.
946- I have been working on (and thinging about) the distributed x509
947 hierachy problem. I have not had time to put my solution in place.
948 It will have to wait until I come back.
949- I have not put in CRL checking in the certificate verification but
950 it would not be hard to do. I was waiting until I could generate my
951 own CRL (which has only been in the last week) and I don't have time
952 to put it in correctly.
953- Montgomery multiplication need to be implemented. I know the
954 algorithm, just ran out of time.
955- PKCS#7. I can load and write the DER version. I need to re-work
956 things to support BER (if that means nothing, read the ASN1 spec :-).
957- Testing of the higher level digital envelope routines. I have not
958 played with the *_seal() and *_open() type functions. They are
959 written but need testing. The *_sign() and *_verify() functions are
960 rock solid.
961- PEM. Doing this and PKCS#7 have been dependant on the distributed
962 x509 heirachy problem. I started implementing my ideas, got
963 distracted writing a CA program and then ran out of time. I provide
964 the functionality of RSAref at least.
965- Re work the asm. code for the x86. I've changed by low level bignum
966 interface again, so I really need to tweak the x86 stuff. gcc is
967 good enough for the other boxes.
968