OpenSSL CHANGES
_______________
- Changes between 0.9.3a and 0.9.4 [xx Aug 1999]
+ Changes between 0.9.4 and 0.9.5 [xx XXX 1999]
+
+ *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
+ the 'enc' command.
+ [Steve Henson]
+
+ *) Add the possibility to add extra information to the memory leak
+ detecting output, to form tracebacks, showing from where each
+ allocation was originated. Also updated sid code to be multi-
+ thread-safe.
+ [Richard Levitte]
+
+ *) Add options -text and -noout to pkcs7 utility and delete the
+ encryption options which never did anything. Update docs.
+ [Steve Henson]
+
+ *) Add options to some of the utilities to allow the pass phrase
+ to be included on either the command line (not recommended on
+ OSes like Unix) or read from the environment. Update the
+ manpages and fix a few bugs.
+ [Steve Henson]
+
+ *) Add a few manpages for some of the openssl commands.
+ [Steve Henson]
+
+ *) Fix the -revoke option in ca. It was freeing up memory twice,
+ leaking and not finding already revoked certificates.
+ [Steve Henson]
+
+ *) Extensive changes to support certificate auxiliary information.
+ This involves the use of X509_CERT_AUX structure and X509_AUX
+ functions. An X509_AUX function such as PEM_read_X509_AUX()
+ can still read in a certificate file in the usual way but it
+ will also read in any additional "auxiliary information". By
+ doing things this way a fair degree of compatability can be
+ retained: existing certificates can have this information added
+ using the new 'x509' options.
+
+ Current auxiliary information includes an "alias" and some trust
+ settings. The trust settings will ultimately be used in enhanced
+ certificate chain verification routines: currently a certificate
+ can only be trusted if it is self signed and then it is trusted
+ for all purposes.
+ [Steve Henson]
+
+ *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). The
+ problem was that one of the replacement routines had not been working since
+ SSLeay releases. For now the offending routine has been replaced with
+ non-optimised assembler. Even so, this now gives around 95% performance
+ improvement for 1024 bit RSA signs.
+ [Mark Cox]
+
+ *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
+ handling. Most clients have the effective key size in bits equal to
+ the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
+ A few however don't do this and instead use the size of the decrypted key
+ to determine the RC2 key length and the AlgorithmIdentifier to determine
+ the effective key length. In this case the effective key lenth can still
+ be 40 bits but the key length can be 168 bits for example. This is fixed
+ by manually forcing an RC2 key into the EVP_PKEY structure because the
+ EVP code can't currently handle unusual RC2 key sizes: it always assumes
+ the key length and effective key length are equal.
+ [Steve Henson]
+
+ *) Add a bunch of functions that should simplify the creation of
+ X509_NAME structures. Now you should be able to do:
+ X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
+ and have it automatically work out the correct field type and fill in
+ the structures. The more adventurous can try:
+ X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
+ and it will (hopefully) work out the correct multibyte encoding.
+ [Steve Henson]
+
+ *) Change the 'req' utility to use the new field handling and multibyte
+ copy routines. Before the DN field creation was handled in an ad hoc
+ way in req, ca, and x509 which was rather broken and didn't support
+ BMPStrings or UTF8Strings. Since some software doesn't implement
+ BMPStrings or UTF8Strings yet, they can be enabled using the config file
+ using the dirstring_type option. See the new comment in the default
+ openssl.cnf for more info.
+ [Steve Henson]
+
+ *) Make crypto/rand/md_rand.c more robust:
+ - Assure unique random numbers after fork().
+ - Make sure that concurrent threads access the global counter and
+ md serializably so that we never lose entropy in them
+ or use exactly the same state in multiple threads.
+ Access to the large state is not always serializable because
+ the additional locking could be a performance killer, and
+ md should be large enough anyway.
+ [Bodo Moeller]
+
+ *) New file apps/app_rand.c with commonly needed functionality
+ for handling the random seed file.
+
+ Use the random seed file in some applications that previously did not:
+ ca,
+ dsaparam -genkey (which also ignored its `-rand' option),
+ s_client,
+ s_server,
+ x509 (when signing).
+ Except on systems with /dev/urandom, it is crucial to have a random
+ seed file at least for key creation, DSA signing, and for DH exchanges;
+ for RSA signatures we could do without one.
+
+ gendh and gendsa (unlike genrsa) used to read only the first byte
+ of each file listed in the `-rand' option. The function as previously
+ found in genrsa is now in app_rand.c and is used by all programs
+ that support `-rand'.
+ [Bodo Moeller]
+
+ *) In RAND_write_file, use mode 0600 for creating files;
+ don't just chmod when it may be too late.
+ [Bodo Moeller]
+
+ *) Report an error from X509_STORE_load_locations
+ when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
+ [Bill Perry]
+
+ *) New function ASN1_mbstring_copy() this copies a string in either
+ ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
+ into an ASN1_STRING type. A mask of permissible types is passed
+ and it chooses the "minimal" type to use or an error if not type
+ is suitable.
+ [Steve Henson]
+
+ *) Add function equivalents to the various macros in asn1.h. The old
+ macros are retained with an M_ prefix. Code inside the library can
+ use the M_ macros. External code (including the openssl utility)
+ should *NOT* in order to be "shared library friendly".
+ [Steve Henson]
+
+ *) Add various functions that can check a certificate's extensions
+ to see if it usable for various purposes such as SSL client,
+ server or S/MIME and CAs of these types. This is currently
+ VERY EXPERIMENTAL but will ultimately be used for certificate chain
+ verification. Also added a -purpose flag to x509 utility to
+ print out all the purposes.
+ [Steve Henson]
+
+ *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
+ functions.
+ [Steve Henson]
+
+ *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
+ for, obtain and decode and extension and obtain its critical flag.
+ This allows all the necessary extension code to be handled in a
+ single function call.
+ [Steve Henson]
+
+ *) RC4 tune-up featuring 30-40% performance improvement on most RISC
+ platforms. See crypto/rc4/rc4_enc.c for further details.
+ [Andy Polyakov]
+
+ *) New -noout option to asn1parse. This causes no output to be produced
+ its main use is when combined with -strparse and -out to extract data
+ from a file (which may not be in ASN.1 format).
+ [Steve Henson]
+
+ *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
+ when producing the local key id.
+ [Richard Levitte <levitte@stacken.kth.se>]
+
+ *) New option -dhparam in s_server. This allows a DH parameter file to be
+ stated explicitly. If it is not stated then it tries the first server
+ certificate file. The previous behaviour hard coded the filename
+ "server.pem".
+ [Steve Henson]
+
+ *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
+ a public key to be input or output. For example:
+ openssl rsa -in key.pem -pubout -out pubkey.pem
+ Also added necessary DSA public key functions to handle this.
+ [Steve Henson]
+
+ *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
+ in the message. This was handled by allowing
+ X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
+ [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
+
+ *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
+ to the end of the strings whereas this didn't. This would cause problems
+ if strings read with d2i_ASN1_bytes() were later modified.
+ [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
+
+ *) Fix for base64 decode bug. When a base64 bio reads only one line of
+ data and it contains EOF it will end up returning an error. This is
+ caused by input 46 bytes long. The cause is due to the way base64
+ BIOs find the start of base64 encoded data. They do this by trying a
+ trial decode on each line until they find one that works. When they
+ do a flag is set and it starts again knowing it can pass all the
+ data directly through the decoder. Unfortunately it doesn't reset
+ the context it uses. This means that if EOF is reached an attempt
+ is made to pass two EOFs through the context and this causes the
+ resulting error. This can also cause other problems as well. As is
+ usual with these problems it takes *ages* to find and the fix is
+ trivial: move one line.
+ [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
+
+ *) Ugly workaround to get s_client and s_server working under Windows. The
+ old code wouldn't work because it needed to select() on sockets and the
+ tty (for keypresses and to see if data could be written). Win32 only
+ supports select() on sockets so we select() with a 1s timeout on the
+ sockets and then see if any characters are waiting to be read, if none
+ are present then we retry, we also assume we can always write data to
+ the tty. This isn't nice because the code then blocks until we've
+ received a complete line of data and it is effectively polling the
+ keyboard at 1s intervals: however it's quite a bit better than not
+ working at all :-) A dedicated Windows application might handle this
+ with an event loop for example.
+ [Steve Henson]
+
+ *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
+ and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
+ will be called when RSA_sign() and RSA_verify() are used. This is useful
+ if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
+ For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
+ should *not* be used: RSA_sign() and RSA_verify() must be used instead.
+ This necessitated the support of an extra signature type NID_md5_sha1
+ for SSL signatures and modifications to the SSL library to use it instead
+ of calling RSA_public_decrypt() and RSA_private_encrypt().
+ [Steve Henson]
+
+ *) Add new -verify -CAfile and -CApath options to the crl program, these
+ will lookup a CRL issuers certificate and verify the signature in a
+ similar way to the verify program. Tidy up the crl program so it
+ no longer acesses structures directly. Make the ASN1 CRL parsing a bit
+ less strict. It will now permit CRL extensions even if it is not
+ a V2 CRL: this will allow it to tolerate some broken CRLs.
+ [Steve Henson]
+
+ *) Initialize all non-automatic variables each time one of the openssl
+ sub-programs is started (this is necessary as they may be started
+ multiple times from the "OpenSSL>" prompt).
+ [Lennart Bang, Bodo Moeller]
+
+ *) Preliminary compilation option RSA_NULL which disables RSA crypto without
+ removing all other RSA functionality (this is what NO_RSA does). This
+ is so (for example) those in the US can disable those operations covered
+ by the RSA patent while allowing storage and parsing of RSA keys and RSA
+ key generation.
+ [Steve Henson]
+
+ *) Non-copying interface to BIO pairs.
+ (still largely untested)
+ [Bodo Moeller]
+
+ *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
+ ASCII string. This was handled independently in various places before.
+ [Steve Henson]
+
+ *) New functions UTF8_getc() and UTF8_putc() that parse and generate
+ UTF8 strings a character at a time.
+ [Steve Henson]
+
+ *) Use client_version from client hello to select the protocol
+ (s23_srvr.c) and for RSA client key exchange verification
+ (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
+ [Bodo Moeller]
+
+ *) Add various utility functions to handle SPKACs, these were previously
+ handled by poking round in the structure internals. Added new function
+ NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
+ print, verify and generate SPKACs. Based on an original idea from
+ Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
+ [Steve Henson]
+
+ *) RIPEMD160 is operational on all platforms and is back in 'make test'.
+ [Andy Polyakov]
+
+ *) Allow the config file extension section to be overwritten on the
+ command line. Based on an original idea from Massimiliano Pala
+ <madwolf@comune.modena.it>. The new option is called -extensions
+ and can be applied to ca, req and x509. Also -reqexts to override
+ the request extensions in req and -crlexts to override the crl extensions
+ in ca.
+ [Steve Henson]
+
+ *) Add new feature to the SPKAC handling in ca. Now you can include
+ the same field multiple times by preceding it by "XXXX." for example:
+ 1.OU="Unit name 1"
+ 2.OU="Unit name 2"
+ this is the same syntax as used in the req config file.
+ [Steve Henson]
+
+ *) Allow certificate extensions to be added to certificate requests. These
+ are specified in a 'req_extensions' option of the req section of the
+ config file. They can be printed out with the -text option to req but
+ are otherwise ignored at present.
+ [Steve Henson]
+
+ *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
+ data read consists of only the final block it would not decrypted because
+ EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
+ A misplaced 'break' also meant the decrypted final block might not be
+ copied until the next read.
+ [Steve Henson]
+
+ *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
+ a few extra parameters to the DH structure: these will be useful if
+ for example we want the value of 'q' or implement X9.42 DH.
+ [Steve Henson]
+
+ *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
+ provides hooks that allow the default DSA functions or functions on a
+ "per key" basis to be replaced. This allows hardware acceleration and
+ hardware key storage to be handled without major modification to the
+ library. Also added low level modexp hooks and CRYPTO_EX structure and
+ associated functions.
+ [Steve Henson]
+
+ *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
+ as "read only": it can't be written to and the buffer it points to will
+ not be freed. Reading from a read only BIO is much more efficient than
+ a normal memory BIO. This was added because there are several times when
+ an area of memory needs to be read from a BIO. The previous method was
+ to create a memory BIO and write the data to it, this results in two
+ copies of the data and an O(n^2) reading algorithm. There is a new
+ function BIO_new_mem_buf() which creates a read only memory BIO from
+ an area of memory. Also modified the PKCS#7 routines to use read only
+ memory BIOSs.
+ [Steve Henson]
+
+ *) Bugfix: ssl23_get_client_hello did not work properly when called in
+ state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
+ a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
+ but a retry condition occured while trying to read the rest.
+ [Bodo Moeller]
+
+ *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
+ NID_pkcs7_encrypted by default: this was wrong since this should almost
+ always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
+ the encrypted data type: this is a more sensible place to put it and it
+ allows the PKCS#12 code to be tidied up that duplicated this
+ functionality.
+ [Steve Henson]
+
+ *) Changed obj_dat.pl script so it takes its input and output files on
+ the command line. This should avoid shell escape redirection problems
+ under Win32.
+ [Steve Henson]
+
+ *) Initial support for certificate extension requests, these are included
+ in things like Xenroll certificate requests. Included functions to allow
+ extensions to be obtained and added.
+ [Steve Henson]
+
+ *) -crlf option to s_client and s_server for sending newlines as
+ CRLF (as required by many protocols).
+ [Bodo Moeller]
+
+ Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
+
+ *) Install libRSAglue.a when OpenSSL is built with RSAref.
+ [Ralf S. Engelschall]
+
+ *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
+ [Andrija Antonijevic <TheAntony2@bigfoot.com>]
*) Fix -startdate and -enddate (which was missing) arguments to 'ca'
program.
method only got called if p,q,dmp1,dmq1,iqmp components were present,
otherwise bn_mod_exp was called. In the case of hardware keys for example
no private key components need be present and it might store extra data
- in the RSA structure, which cannot be accessed from bn_mod_exp. By setting
- RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for private key
- operations.
+ in the RSA structure, which cannot be accessed from bn_mod_exp.
+ By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
+ private key operations.
[Steve Henson]
*) Added support for SPARC Linux.
The PEM[_ASN1]_{read,write}... functions and macros now take an
additional void * argument, which is just handed through whenever
the password callback is called.
- [Damien Miller <dmiller@ilogic.com.au>, with tiny changes by Bodo Moeller]
+ [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
New function SSL_CTX_set_default_passwd_cb_userdata.