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* Move not_resumable and sess_cert from SSL_SESSION to internal.jsing2017-01-231-3/+3
| | | | ok beck@
* Move the stats struct from SSL_CTX to internal.jsing2017-01-231-15/+15
| | | | ok beck@
* Move most of the SSL3_STATE fields to internal - the ones that remain arejsing2017-01-221-16/+16
| | | | | | known to be used by ports. ok beck@
* Move most of DTLS1_STATE to internal.beck2017-01-221-2/+2
| | | | ok jsing@
* Move ALPN and NPN fields from SSL/SSL_CTX to internal.jsing2017-01-221-32/+32
| | | | ok beck@
* Convert publically visible structs to translucent structs.jsing2017-01-221-11/+24
| | | | | | | | | | | | | This change adds an internal opaque struct for each of the significant publically visible structs. The opaque struct is then allocated and attached to the publically visible struct when the appropriate *_new() function is called, then cleared and freed as necessary. This will allow for changes to be made to the internals of libssl, without requiring a major bump each time the publically visible structs are modified. ok beck@
* Expand IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN macro.jsing2017-01-211-2/+16
| | | | No change in generated assembly.
* Pull out, rework and dedup the code that determines the highest sharedjsing2017-01-031-3/+33
| | | | | | version. ok beck@ doug@
* Pull out (and largely rewrite) the code that determines the enabledjsing2016-12-301-1/+43
| | | | | | | | | | protocol version range. This also fixes a bug whereby if all protocols were disabled, the client would still use TLSv1.2 in the client hello, only to have if fail with unsupported version when it received and processed the server hello. ok doug@
* Convert ssl_cipher_list_to_bytes() to CBB, changing the function to returnjsing2016-12-041-16/+32
| | | | | | | the number of bytes written via an explicit *outlen argument and retaining the return value to indicate success or failure. ok doug@
* Expand LHASH_OF, IMPLEMENT_LHASH_DOALL_ARG_FN and LHASH_DOALL_ARG_FNjsing2016-11-021-2/+2
| | | | macros. Only change in generated assembly is due to line numbering.
* Expand IMPLEMENT_LHASH_COMP_FN/IMPLEMENT_LHASH_HASH_FN macros - the onlyjsing2016-11-021-5/+17
| | | | change to generated assembly results from a difference in line numbers.
* Remove support for fixed ECDH cipher suites - these is not widely supportedjsing2016-10-191-93/+20
| | | | | | | | | and more importantly they do not provide PFS (if you want to use ECDH, use ECDHE instead). With input from guenther@. ok deraadt@ guenther@
* Improve on code from the previous commit.jsing2016-09-221-7/+5
| | | | ok bcook@
* Avoid selecting weak digests for (EC)DH when using SNI.bcook2016-09-201-3/+12
| | | | | | | | | | | from OpenSSL: SSL_set_SSL_CTX is normally called for SNI after ClientHello has received and the digest to use for each certificate has been decided. The original ssl->cert contains the negotiated digests and is now copied to the new ssl->cert. noted by David Benjamin and Kinichiro Inoguchi
* Remove last vestige of SSL_OP_NO_SSLv3 support.doug2015-10-251-4/+1
| | | | | | No part of LibreSSL checks for this flag any longer. ok jsing@
* free rbio before wbiobeck2015-10-191-7/+7
| | | | ok jsing@
* Fix use of pointer value after BIO_free, and remove senseless NULL checks.beck2015-10-161-7/+8
| | | | ok bcook@
* SSL_new(): fix ref counting and memory leak in error path.doug2015-10-031-8/+3
| | | | | | | | | | Rather than a half-hearted attempt to free up resources and fix ref counting at the SSL_CTX level, let SSL_free() do its job. This diff got lost in the shuffle somewhere. It's from last year. Ref counting error reported by Parakleta in github ticket #51. Thanks! ok jsing@, beck@
* Unwrap a bunch of lines.jsing2015-09-121-37/+19
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* Remove most of the SSLv3 version checks and a few TLS v1.0.doug2015-09-121-4/+1
| | | | | | | We can now assume >= TLS v1.0 since SSL2_VERSION, SSL3_VERSION and DTLS1_BAD_VER support was removed. "reads ok" miod@
* Nuke ssl_bad_method().jsing2015-09-111-9/+1
| | | | ok "flensing knife"
* Nuke ssl_replace_hash().jsing2015-09-111-21/+1
| | | | ok "flensing knife"
* Remove support for DTLS_BAD_VER. We do not support non-standard andjsing2015-09-101-3/+1
| | | | | | | incomplete implementations just so that we can interoperate with products from vendors who have not bothered to fix things in the last ~10 years. ok bcook@ miod@
* Check handshake_func against NULL rather than 0, since it is a functionjsing2015-09-091-7/+7
| | | | | | pointer. ok bcook@ miod@
* Remove SSLv3 support from LibreSSL.doug2015-08-271-6/+1
| | | | | | | | | | This is the first wave of SSLv3 removal which removes the main SSLv3 functions. Future commits will remove the rest of the SSLv3 support. Discussed the plan at c2k15. Input from jsing@, beck@, miod@, bcook@, sthen@, naddy@, and deraadt@. ok jsing@, beck@
* Allow *_free() functions in libssl to handle NULL input.doug2015-07-191-1/+4
| | | | | | This mimics free()'s behavior which makes error handling simpler. ok bcook@ miod@
* Convert ssl_bytes_to_cipher_list to CBS.doug2015-06-281-8/+18
| | | | | | | Link in the new 'unit' regress and expand the invalid tests to include some that would fail before the CBS conversion. input + ok miod@ jsing@
* Clean up the ssl_bytes_to_cipher_list() API - rather than having thejsing2015-04-151-15/+9
| | | | | | | | | | ability to pass or not pass a STACK_OF(SSL_CIPHER) *, which is then either zeroed or if NULL a new one is allocated, always allocate one and return it directly. Inspired by simliar changes in BoringSSL. ok beck@ doug@
* BUF_MEM_free() has its own explicit NULL check.jsing2015-03-271-9/+6
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* Reluctantly add server-side support for TLS_FALLBACK_SCSV.jsing2015-02-221-4/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | This allows for clients that willingly choose to perform a downgrade and attempt to establish a second connection at a lower protocol after the previous attempt unexpectedly failed, to be notified and have the second connection aborted, if the server does in fact support a higher protocol. TLS has perfectly good version negotiation and client-side fallback is dangerous. Despite this, in order to maintain maximum compatability with broken web servers, most mainstream browsers implement this. Furthermore, TLS_FALLBACK_SCSV only works if both the client and server support it and there is effectively no way to tell if this is the case, unless you control both ends. Unfortunately, various auditors and vulnerability scanners (including certain online assessment websites) consider the presence of a not yet standardised feature to be important for security, even if the clients do not perform client-side downgrade or the server only supports current TLS protocols. Diff is loosely based on OpenSSL with some inspiration from BoringSSL. Discussed with beck@ and miod@. ok bcook@
* There is not much point constructing an SSL_CIPHER, then callingjsing2015-02-221-7/+3
| | | | | ssl3_cipher_get_value() to get the cipher suite value that we just put in the struct - use the cipher suite value directly.
* Remove IMPLEMENT_STACK_OF noops.jsing2015-02-221-2/+1
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* Enable building with -DOPENSSL_NO_DEPRECATED.doug2015-02-111-1/+2
| | | | | | | | | | | | | | | If you didn't enable deprecated code, there were missing err.h and bn.h includes. This commit allows building with or without deprecated code. This was not derived from an OpenSSL commit. However, they recently enabled OPENSSL_NO_DEPRECATED in git and fixed these header problems in a different way. Verified with clang that this only changes line numbers in the generated asm. ok miod@
* Return NULL when there are no shared ciphers.doug2015-02-091-4/+6
| | | | | | | | | | | | | | | | | OpenSSL added this change to avoid an out-of-bounds write since they're accessing p[-1]. We initialize buf and use strrchr() so we aren't subject to the same OOB write. However, we should return NULL rather than an empty string when there are no shared ciphers. Also, KNF a particularly bad section above here that miod noticed. Based on OpenSSL commits: 4ee356686f72ff849f6f3d58562224ace732b1a6 308505b838e4e3ce8485bb30f5b26e2766dc7f8b ok miod@
* Clean up the {get,put}_cipher_by_char() implementations. Also usejsing2015-02-071-6/+3
| | | | | | | ssl3_get_cipher_by_value() in other parts of the code where it simplifies things. ok doug@
* Support CA verification in chroot'ed processes without direct filereyk2015-01-221-1/+7
| | | | | | | | | | access to the certificates. SSL_CTX_load_verify_mem() is a frontend to the new X509_STORE_load_mem() function that allows to load the CA chain from a memory buffer that is holding the PEM-encoded files. This function allows to handle the verification in privsep'ed code. Adopted for LibreSSL based on older code from relayd (by pyr@ and myself) With feedback and OK bluhm@
* Add error handling for EVP_DigestInit_ex().doug2014-12-151-3/+7
| | | | | | | | | | | | | A few EVP_DigestInit_ex() calls were left alone since reporting an error would change the public API. Changed internal ssl3_cbc_digest_record() to return a value due to the above change. It will also now set md_out_size=0 on failure. This is based on part of BoringSSL's commit to fix malloc crashes: https://boringssl.googlesource.com/boringssl/+/69a01608f33ab6fe2c3485d94aef1fe9eacf5364 ok miod@
* unifdef OPENSSL_NO_NEXTPROTONEG, which is one of the last standing #ifndefjsing2014-12-141-9/+1
| | | | | | | mazes in libssl. NPN is being replaced by ALPN, however it is still going to be around for a while yet. ok miod@
* Remove support for GOST R 34.10-94 signature authentication, along withjsing2014-12-101-8/+1
| | | | | | | the two ciphersuites that use it. GOST94 public/private keys have been long obsoleted and libcrypto does not have support for them anyway. Discussed with Dmitry Eremin-Solenikov.
* Add support for ALPN.jsing2014-12-101-1/+85
| | | | | | Based on OpenSSL and BoringSSL. ok bcook@
* Sort and group includes.jsing2014-11-161-4/+7
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* Add support for automatic DH ephemeral keys.jsing2014-10-311-2/+51
| | | | | | | This allows an SSL server to enable DHE ciphers with a single setting, which results in an DH key being generated based on the server key length. Partly based on OpenSSL.
* Remove support for ephemeral/temporary RSA private keys.jsing2014-10-311-4/+3
| | | | | | | | | The only use for these is via SSL_OP_EPHEMERAL_RSA (which is effectively a standards violation) and for RSA sign-only, should only be possible if you are using an export cipher and have an RSA private key that is more than 512 bits in size (however we no longer support export ciphers). ok bcook@ miod@
* Use arc4random_buf() instead of RAND_bytes() or RAND_pseudo_bytes().jsing2014-10-181-6/+5
| | | | | | | | | | | | | | | arc4random provides high quality pseudo-random numbers, hence there is no need to differentiate between "strong" and "pseudo". Furthermore, the arc4random_buf() function is guaranteed to succeed, which avoids the need to check for and handle failure, simplifying the code. It is worth noting that a number of the replaced RAND_bytes() and RAND_pseudo_bytes() calls were missing return value checks and these functions can fail for a number of reasons (at least in OpenSSL - thankfully they were converted to wrappers around arc4random_buf() some time ago in LibreSSL). ok beck@ deraadt@ miod@
* Disable SSLv3 by default.jsing2014-10-151-1/+4
| | | | | | | | | | | | | | SSLv3 has been long known to have weaknesses and the POODLE attack has once again shown that it is effectively broken/insecure. As such, it is time to stop enabling a protocol was deprecated almost 15 years ago. If an application really wants to provide backwards compatibility, at the cost of security, for now SSL_CTX_clear_option(ctx, SSL_OP_NO_SSLv3) can be used to re-enable it on a per-application basis. General agreement from many. ok miod@
* Add support for automatic ephemeral EC keys.jsing2014-10-031-2/+3
| | | | | | | | | | This allows an SSL server to enable ECDHE ciphers with a single setting, which results in an EC key being generated using the first preference shared curve. Based on OpenSSL with inspiration from boringssl. ok miod@
* Remove SSL_kDHr, SSL_kDHd and SSL_aDH. No supported ciphersuites use them,jsing2014-09-071-16/+2
| | | | | | nor do we plan on supporting them. ok guenther@
* Replace the remaining uses of ssl3_put_cipher_by_char() with s2n and ajsing2014-08-241-3/+4
| | | | | | | ssl3_cipher_get_value() helper function, which returns the cipher suite value for the given cipher. ok miod@
* Replace the remaining ssl3_get_cipher_by_char() calls with n2s() andjsing2014-08-231-8/+11
| | | | | | ssl3_get_cipher_by_id(). ok bcook@
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