wolfSSL as of 3.6.6 no longer enables SSLv3 by default.  wolfSSL also no
longer supports static key cipher suites with PSK, RSA, or ECDH.  This means
if you plan to use TLS cipher suites you must enable DH (DH is on  by default),
or enable ECC (ECC is on by default on 64bit systems), or you must enable static
key cipher suites with
    WOLFSSL_STATIC_DH
    WOLFSSL_STATIC_RSA
    or
    WOLFSSL_STATIC_PSK

though static key cipher suites are deprecated and will be removed from future
versions of TLS.  They also lower your security by removing PFS. Since current
NTRU suites available do not use ephemeral keys, WOLFSSL_STATIC_RSA needs to be
used in order to build with NTRU suites.


When compiling ssl.c wolfSSL will now issue a compiler error if no cipher suites
are available.  You can remove this error by defining WOLFSSL_ALLOW_NO_SUITES
in the event that you desire that, i.e., you're not using TLS cipher suites.

wolfSSL takes a different approach to certificate verification than OpenSSL
does.  The default policy for the client is to verify the server, this means
that if you don't load CAs to verify the server you'll get a connect error,
no signer error to confirm failure (-188).  If you want to mimic OpenSSL
behavior of having SSL_connect succeed even if verifying the server fails and
reducing security you can do this by calling:

wolfSSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, 0);

before calling wolfSSL_new();  Though it's not recommended.

##Release 3.9.0 of wolfSSL has bug fixes and new features including:

• Add new leantls configuration

• Add RSA OAEP padding at wolfCrypt level

• Add Arduino port and example client

• Add fixed point DH operation

• Add CUSTOM_RAND_GENRATE_SEED_OS and CUSTOM_RAND_GENERATE_BLOCK

• Add ECDHE-PSK cipher suites

• Add PSK ChaCha20-Poly1305 cipher suites

• Add option for fail on no peer cert except PSK suites

• Add port for Nordic nRF51

• Add additional ECC NIST test vectors for 256, 384 and 521

• Add more granular ECC, Ed25519/Curve25519 and AES configs

• Update to ChaCha20-Poly1305

• Update support for Freescale KSDK 1.3.0

• Update DER buffer handling code, refactoring and reducing memory

• Fix to AESNI 192 bit key expansion

• Fix to C# wrapper character encoding

• Fix sequence number issue with DTLS epoch 0 messages

• Fix RNGA with K64 build

• Fix ASN.1 X509 V3 certificate policy extension parsing

• Fix potential free of uninitialized RSA key in asn.c

• Fix potential underflow when using ECC build with FP_ECC

• Fixes for warnings in Visual Studio 2015 build

• No high level security fixes that requires an update though we always recommend updating to the latest

• FP_ECC is off by default, users with it enabled should update for the zero sized hash fix

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

##Release 3.8.0 of wolfSSL has bug fixes and new features including:

• Example client/server with VxWorks

• AESNI use with AES-GCM

• Stunnel compatibility enhancements

• Single shot hash and signature/verify API added

• Update cavium nitrox port

• LPCXpresso IDE support added

• C# wrapper to support wolfSSL use by a C# program

• (BETA version)OCSP stapling added

• Update OpenSSH compatibility

• Improve DTLS handshake when retransmitting finished message

• fix idea_mult() for 16 and 32bit systems

• fix LowResTimer on Microchip ports

• No high level security fixes that requires an update though we always recommend updating to the latest

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

##Release 3.7.0 of wolfSSL has bug fixes and new features including:

• ALPN extension support added for HTTP2 connections with --enable-alpn

• Change of example/client/client max fragment flag -L -> -F

• Throughput benchmarking, added scripts/benchmark.test

• Sniffer API ssl_FreeDecodeBuffer added

• Addition of AES_GCM to Sniffer

• Sniffer change to handle unlimited decrypt buffer size

• New option for the sniffer where it will try to pick up decoding after a sequence number acknowldgement fault. Also includes some additional stats.

• JNI API setter and getter function for jobject added

• User RSA crypto plugin abstraction. An example placed in wolfcrypt/user-crypto

• fix to asn configuration bug

• AES-GCM/CCM fixes.

• Port for Rowley added

• Rowley Crossworks bare metal examples added

• MDK5-ARM project update

• FreeRTOS support updates.

• VXWorks support updates.

• Added the IDEA cipher and support in wolfSSL.

• Update wolfSSL website CA.

• CFLAGS is usable when configuring source.

• No high level security fixes that requires an update though we always recommend updating to the latest

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

#wolfSSL (Formerly CyaSSL) Release 3.6.8 (09/17/2015)

##Release 3.6.8 of wolfSSL fixes two high severity vulnerabilities. ##It also includes bug fixes and new features including:

• Two High level security fixes, all users SHOULD update. a) If using wolfSSL for DTLS on the server side of a publicly accessible machine you MUST update. b) If using wolfSSL for TLS on the server side with private RSA keys allowing ephemeral key exchange without low memory optimziations you MUST update and regenerate the private RSA keys.

  Please see https://www.wolfssl.com/wolfSSL/Blog/Blog.html for more details

• No filesystem build fixes for various configurations

• Certificate generation now supports several extensions including KeyUsage, SKID, AKID, and Ceritifcate Policies

• CRLs can be loaded from buffers as well as files now

• SHA-512 Ceritifcate Signing generation

• Fixes for sniffer reassembly processing

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

#wolfSSL (Formerly CyaSSL) Release 3.6.6 (08/20/2015)

##Release 3.6.6 of wolfSSL has bug fixes and new features including:

• OpenSSH compatibility with --enable-openssh

• stunnel compatibility with --enable-stunnel

• lighttpd compatibility with --enable-lighty

• SSLv3 is now disabled by default, can be enabled with --enable-sslv3

• Ephemeral key cipher suites only are now supported by default To enable static ECDH cipher suites define WOLFSSL_STATIC_DH To enable static RSA cipher suites define WOLFSSL_STATIC_RSA To enable static PSK cipher suites define WOLFSSL_STATIC_PSK

• Added QSH (quantum-safe handshake) extension with --enable-ntru

• SRP is now part of wolfCrypt, enable with --enabe-srp

• Certificate handshake messages can now be sent fragmented if the record size is smaller than the total message size, no user action required.

• DTLS duplicate message fixes

• Visual Studio project files now support DLL and static builds for 32/64bit.

• Support for new Freesacle I/O

• FreeRTOS FIPS support

• No high level security fixes that requires an update though we always recommend updating to the latest

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

#wolfSSL (Formerly CyaSSL) Release 3.6.0 (06/19/2015)

##Release 3.6.0 of wolfSSL has bug fixes and new features including:

• Max Strength build that only allows TLSv1.2, AEAD ciphers, and PFS (Perfect Forward Secrecy). With --enable-maxstrength

• Server side session ticket support, the example server and echosever use the example callback myTicketEncCb(), see wolfSSL_CTX_set_TicketEncCb()

• FIPS version submitted for iOS.

• TI Crypto Hardware Acceleration

• DTLS fragmentation fixes

• ECC key check validation with wc_ecc_check_key()

• 32bit code options to reduce memory for Curve25519 and Ed25519

• wolfSSL JNI build switch with --enable-jni

• PicoTCP support improvements

• DH min ephemeral key size enforcement with wolfSSL_CTX_SetMinDhKey_Sz()

• KEEP_PEER_CERT and AltNames can now be used together

• ChaCha20 big endian fix

• SHA-512 signature algorithm support for key exchange and verify messages

• ECC make key crash fix on RNG failure, ECC users must update.

• Improvements to usage of time code.

• Improvements to VS solution files.

• GNU Binutils 2.24 ld has problems with some debug builds, to fix an ld error add -fdebug-types-section to C_EXTRA_FLAGS

• No high level security fixes that requires an update though we always recommend updating to the latest (except note 14, ecc RNG failure)

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

#wolfSSL (Formerly CyaSSL) Release 3.4.8 (04/06/2015)

##Release 3.4.8 of wolfSSL has bug fixes and new features including:

• FIPS version submitted for iOS.
• Max Strength build that only allows TLSv1.2, AEAD ciphers, and PFS.
• Improvements to usage of time code.
• Improvements to VS solution files.

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

#wolfSSL (Formerly CyaSSL) Release 3.4.6 (03/30/2015)

##Release 3.4.6 of wolfSSL has bug fixes and new features including:

• Intel Assembly Speedups using instructions rdrand, rdseed, aesni, avx1/2, rorx, mulx, adox, adcx . They can be enabled with --enable-intelasm. These speedup the use of RNG, SHA2, and public key algorithms.

• Ed25519 support at the crypto level. Turn on with --enable-ed25519. Examples in wolcrypt/test/test.c ed25519_test().

• Post Handshake Memory reductions. wolfSSL can now hold less than 1,000 bytes of memory per secure connection including cipher state.

• wolfSSL API and wolfCrypt API fixes, you can still include the cyassl and ctaocrypt headers which will enable the compatibility APIs for the foreseeable future

• INSTALL file to help direct users to build instructions for their environment

• For ECC users with the normal math library a fix that prevents a crash when verify signature fails. Users of 3.4.0 with ECC and the normal math library must update

• RC4 is now disabled by default in autoconf mode

• AES-GCM and ChaCha20/Poly1305 are now enabled by default to make AEAD ciphers available without a switch

• External ChaCha-Poly AEAD API, thanks to Andrew Burks for the contribution

• DHE-PSK cipher suites can now be built without ASN or Cert support

• Fix some NO MD5 build issues with optional features

• Freescale CodeWarrior project updates

• ECC curves can be individually turned on/off at build time.

• Sniffer handles Cert Status message and other minor fixes

• SetMinVersion() at the wolfSSL Context level instead of just SSL session level to allow minimum protocol version allowed at runtime

• RNG failure resource cleanup fix

• No high level security fixes that requires an update though we always recommend updating to the latest (except note 6 use case of ecc/normal math)

See INSTALL file for build instructions. More info can be found on-line at //https://wolfssl.com/yaSSL/Docs.html

#wolfSSL (Formerly CyaSSL) Release 3.4.0 (02/23/2015)

• wolfSSL API and wolfCrypt API, you can still include the cyassl and ctaocrypt headers which will enable the compatibility APIs for the foreseeable future
• Example use of the wolfCrypt API can be found in wolfcrypt/test/test.c
• Example use of the wolfSSL API can be found in examples/client/client.c
• Curve25519 now supported at the wolfCrypt level, wolfSSL layer coming soon
• Improvements in the build configuration under AIX
• Microchip Pic32 MZ updates
• TIRTOS updates
• PowerPC updates
• Xcode project update
• Bidirectional shutdown examples in client/server with -w (wait for full shutdown) option
• Cycle counts on benchmarks for x86_64, more coming soon
• ALT_ECC_SIZE for reducing ecc heap use with fastmath when also using large RSA keys
• Various compile warnings
• Scan-build warning fixes
• Changed a memcpy to memmove in the sniffer (if using sniffer please update)
• No high level security fixes that requires an update though we always recommend updating to the latest

• Countermeasuers for Handshake message duplicates, CHANGE CIPHER without FINISHED, and fast forward attempts. Thanks to Karthikeyan Bhargavan from the Prosecco team at INRIA Paris-Rocquencourt for the report.
• FIPS version submitted
• Removes SSLv2 Client Hello processing, can be enabled with OLD_HELLO_ALLOWED
• User can set mimimum downgrade version with CyaSSL_SetMinVersion()
• Small stack improvements at TLS/SSL layer
• TLS Master Secret generation and Key Expansion are now exposed
• Adds client side Secure Renegotiation, * not recommended *
• Client side session ticket support, not fully tested with Secure Renegotiation
• Allows up to 4096bit DHE at TLS Key Exchange layer
• Handles non standard SessionID sizes in Hello Messages
• PicoTCP Support
• Sniffer now supports SNI Virtual Hosts
• Sniffer now handles non HTTPS protocols using STARTTLS
• Sniffer can now parse records with multiple messages
• TI-RTOS updates
• Fix for ColdFire optimized fp_digit read only in explicit 32bit case
• ADH Cipher Suite ADH-AES128-SHA for EAP-FAST

The CyaSSL manual is available at: https://www.wolfssl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• ChaCha20 and Poly1305 crypto and suites
• Small stack improvements for OCSP, CRL, TLS, DTLS
• NTRU Encrypt and Decrypt benchmarks
• Updated Visual Studio project files
• Updated Keil MDK5 project files
• Fix for DTLS sequence numbers with GCM/CCM
• Updated HashDRBG with more secure struct declaration
• TI-RTOS support and example Code Composer Studio project files
• Ability to get enabled cipher suites, CyaSSL_get_ciphers()
• AES-GCM/CCM/Direct support for Freescale mmCAU and CAU
• Sniffer improvement checking for decrypt key setup
• Support for raw ECC key import
• Ability to convert ecc_key to DER, EccKeyToDer()
• Security fix for RSA Padding check vulnerability reported by Intel Security Advanced Threat Research team

The CyaSSL manual is available at: https://www.wolfssl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• Fix for older versions of icc without 128-bit type
• Intel ASM syntax for AES-NI
• Updated NTRU support, keygen benchmark
• FIPS check for minimum required HMAC key length
• Small stack (--enable-smallstack) improvements for PKCS#7, ASN
• TLS extension support for DTLS
• Default I/O callbacks external to user
• Updated example client with bad clock test
• Ability to set optional ECC context info
• Ability to enable/disable DH separate from opensslextra
• Additional test key/cert buffers for CA and server
• Updated example certificates

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• Added the following cipher suites:
  • TLS_PSK_WITH_AES_128_GCM_SHA256
  • TLS_PSK_WITH_AES_256_GCM_SHA384
  • TLS_PSK_WITH_AES_256_CBC_SHA384
  • TLS_PSK_WITH_NULL_SHA384
  • TLS_DHE_PSK_WITH_AES_128_GCM_SHA256
  • TLS_DHE_PSK_WITH_AES_256_GCM_SHA384
  • TLS_DHE_PSK_WITH_AES_128_CBC_SHA256
  • TLS_DHE_PSK_WITH_AES_256_CBC_SHA384
  • TLS_DHE_PSK_WITH_NULL_SHA256
  • TLS_DHE_PSK_WITH_NULL_SHA384
  • TLS_DHE_PSK_WITH_AES_128_CCM
  • TLS_DHE_PSK_WITH_AES_256_CCM
• Added AES-NI support for Microsoft Visual Studio builds.
• Changed small stack build to be disabled by default.
• Updated the Hash DRBG and provided a configure option to enable.

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• FIPS release candidate
• X.509 improvements that address items reported by Suman Jana with security researchers at UT Austin and UC Davis
• Small stack size improvements, --enable-smallstack. Offloads large local variables to the heap. (Note this is not complete.)
• Updated AES-CCM-8 cipher suites to use approved suite numbers.

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• Security fixes that address items reported by Ivan Fratric of the Google Security Team
• X.509 Unknown critical extensions treated as errors, report by Suman Jana with security researchers at UT Austin and UC Davis
• Sniffer fixes for corrupted packet length and Jumbo frames
• ARM thumb mode assembly fixes
• Xcode 5.1 support including new clang
• PIC32 MZ hardware support
• CyaSSL Object has enough room to read the Record Header now w/o allocs
• FIPS wrappers for AES, 3DES, SHA1, SHA256, SHA384, HMAC, and RSA.
• A sample I/O pool is demonstrated with --enable-iopool to overtake memory handling and reduce memory fragmentation on I/O large sizes

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• Freescale Kinetis RNGB support
• Freescale Kinetis mmCAU support
• TLS Hello extensions
  • ECC
  • Secure Renegotiation (null)
  • Truncated HMAC
• SCEP support
  • PKCS #7 Enveloped data and signed data
  • PKCS #10 Certificate Signing Request generation
• DTLS sliding window
• OCSP Improvements
  • API change to integrate into Certificate Manager
  • IPv4/IPv6 agnostic
  • example client/server support for OCSP
  • OCSP nonces are optional
• GMAC hashing
• Windows build additions
• Windows CYGWIN build fixes
• Updated test certificates
• Microchip MPLAB Harmony support
• Update autoconf scripts
• Additional X.509 inspection functions
• ECC encrypt/decrypt primitives
• ECC Certificate generation

The Freescale Kinetis K53 RNGB documentation can be found in Chapter 33 of the K53 Sub-Family Reference Manual: https://cache.freescale.com/files/32bit/doc/ref_manual/K53P144M100SF2RM.pdf

Freescale Kinetis K60 mmCAU (AES, DES, 3DES, MD5, SHA, SHA256) documentation can be found in the "ColdFire/ColdFire+ CAU and Kinetis mmCAU Software Library User Guide": https://cache.freescale.com/files/32bit/doc/user_guide/CAUAPIUG.pdf

• AES-GCM and AES-CCM use AES-NI
• NetX default IO callback handlers
• IPv6 fixes for DTLS Hello Cookies
• The ability to unload Certs/Keys after the handshake, CyaSSL_UnloadCertsKeys()
• SEP certificate extensions
• Callback getters for easier resource freeing
• External CYASSL_MAX_ERROR_SZ for correct error buffer sizing
• MacEncrypt and DecryptVerify Callbacks for User Atomic Record Layer Processing
• Public Key Callbacks for ECC and RSA
• Client now sends blank cert upon request if doesn't have one with TLS <= 1.2

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• SNI support for client and server
• KEIL MDK-ARM projects
• Wildcard check to domain name match, and Subject altnames are checked too
• Better error messages for certificate verification errors
• Ability to discard session during handshake verify
• More consistent error returns across all APIs
• Ability to unload CAs at the CTX or CertManager level
• Authority subject id support for Certificate matching
• Persistent session cache functionality
• Persistent CA cache functionality
• Client session table lookups to push serverID table to library level
• Camellia support to sniffer
• User controllable settings for DTLS timeout values
• Sniffer fixes for caching long lived sessions
• DTLS reliability enhancements for the handshake
• Better ThreadX support

When compiling with Mingw, libtool may give the following warning due to path conversion errors:

libtool: link: Could not determine host file name corresponding to **
libtool: link: Continuing, but uninstalled executables may not work.

If so, examples and testsuite will have problems when run, showing an error while loading shared libraries. To resolve, please run "make install".

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• DTLS 1.2 support including AEAD ciphers
• SHA-3 finalist Blake2 support, it's fast and uses little resources
• SHA-384 cipher suites including ECC ones
• HMAC now supports SHA-512
• Track memory use for example client/server with -t option
• Better IPv6 examples with --enable-ipv6, before if ipv6 examples/tests were turned on, localhost only was used. Now link-local (with scope ids) and ipv6 hosts can be used as well.
• Xcode v4.6 project for iOS v6.1 update
• settings.h is now checked in all *.c files for true one file setting detection
• Better alignment at SSL layer for hardware crypto alignment needs
  • Note, SSL itself isn't friendly to alignment with 5 byte TLS headers and 13 bytes DTLS headers, but every effort is now made to align with the CYASSL_GENERAL_ALIGNMENT flag which sets desired alignment requirement
• NO_64BIT flag to turn off 64bit data type accumulators in public key code
  • Note, some systems are faster with 32bit accumulators
• --enable-stacksize for example client/server stack use
  • Note, modern desktop Operating Systems may add bytes to each stack frame
• Updated compression/decompression with direct crypto access
• All ./configure options are now lowercase only for consistency
• ./configure builds default to fastmath option
  • Note, if on ia32 and building in shared mode this may produce a problem with a missing register being available because of PIC, there are at least 6 solutions to this:
    1. --disable-fastmath , don't use fastmath
    2. --disable-shared, don't build a shared library
    3. C_EXTRA_FLAGS=-DTFM_NO_ASM , turn off assembly use
    4. use clang, it just seems to work
    5. play around with no PIC options to force all registers being open, e.g., --without-pic
    6. if static lib is still a problem try removing fPIE
• Many new ./configure switches for option enable/disable for example
  • rsa
  • dh
  • dsa
  • md5
  • sha
  • arc4
  • null (allow NULL ciphers)
  • oldtls (only use TLS 1.2)
  • asn (no certs or public keys allowed)
• ./configure generates cyassl/options.h which allows a header the user can include in their app to make sure the same options are set at the app and CyaSSL level.
• autoconf no longer needs serial-tests which lowers version requirements of automake to 1.11 and autoconf to 2.63

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• Fix for TLS CBC padding timing attack identified by Nadhem Alfardan and Kenny Paterson: https://www.isg.rhul.ac.uk/tls/
• Microchip PIC32 (MIPS16, MIPS32) support
• Microchip MPLAB X example projects for PIC32 Ethernet Starter Kit
• Updated CTaoCrypt benchmark app for embedded systems
• 1024-bit test certs/keys and cert/key buffers
• AES-CCM-8 crypto and cipher suites
• Camellia crypto and cipher suites
• Bumped minimum autoconf version to 2.65, automake version to 1.12
• Addition of OCSP callbacks
• STM32F2 support with hardware crypto and RNG
• Cavium NITROX support

CTaoCrypt now has support for the Microchip PIC32 and has been tested with the Microchip PIC32 Ethernet Starter Kit, the XC32 compiler and MPLAB X IDE in both MIPS16 and MIPS32 instruction set modes. See the README located under the <cyassl_root>/mplabx directory for more details.

To add Cavium NITROX support do:

./configure --with-cavium=/home/user/cavium/software

pointing to your licensed cavium/software directory. Since Cavium doesn't build a library we pull in the cavium_common.o file which gives a libtool warning about the portability of this. Also, if you're using the github source tree you'll need to remove the -Wredundant-decls warning from the generated Makefile because the cavium headers don't conform to this warning. Currently CyaSSL supports Cavium RNG, AES, 3DES, RC4, HMAC, and RSA directly at the crypto layer. Support at the SSL level is partial and currently just does AES, 3DES, and RC4. RSA and HMAC are slower until the Cavium calls can be utilized in non blocking mode. The example client turns on cavium support as does the crypto test and benchmark. Please see the HAVE_CAVIUM define.

CyaSSL is able to use the STM32F2 hardware-based cryptography and random number generator through the STM32F2 Standard Peripheral Library. For necessary defines, see the CYASSL_STM32F2 define in settings.h. Documentation for the STM32F2 Standard Peripheral Library can be found in the following document: https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/DM00023896.pdf

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• ECC into main version
• Lean PSK build (reduced code size, RAM usage, and stack usage)
• FreeBSD CRL monitor support
• CyaSSL_peek()
• CyaSSL_send() and CyaSSL_recv() for I/O flag setting
• CodeWarrior Support
• MQX Support
• Freescale Kinetis support including Hardware RNG
• autoconf builds use jobserver
• cyassl-config
• Sniffer memory reductions

Thanks to Brian Aker for the improved autoconf system, make rpm, cyassl-config, warning system, and general good ideas for improving CyaSSL!

The Freescale Kinetis K70 RNGA documentation can be found in Chapter 37 of the K70 Sub-Family Reference Manual: https://cache.freescale.com/files/microcontrollers/doc/ref_manual/K70P256M150SF3RM.pdf

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• DTLS reliability
• Reduced memory usage after handshake
• Updated build process

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• AES-GCM crypto and cipher suites
• make test cipher suite checks
• Subject AltName processing
• Command line support for client/server examples
• Sniffer SessionTicket support
• SHA-384 cipher suites
• Verify cipher suite validity when user overrides
• CRL dir monitoring
• DTLS Cookie support, reliability coming soon

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• Initial CRL support (--enable-crl)
• Initial OCSP support (--enable-ocsp)
• Add static ECDH suites
• SHA-384 support
• ECC client certificate support
• Add medium session cache size (1055 sessions)
• Updated unit tests
• Protection against mutex reinitialization

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• A fix for malicious certificates pointed out by Remi Gacogne (thanks) resulting in NULL pointer use.
• Respond to renegotiation attempt with no_renegoatation alert
• Add basic path support for load_verify_locations()
• Add set Temp EC-DHE key size
• Extra checks on rsa test when porting into

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• Fixes for CA basis constraint check
• CTX reference counting
• Initial unit test additions
• Lean and Mean Windows fix
• ECC benchmarking
• SSMTP build support
• Ability to group handshake messages with set_group_messages(ctx/ssl)
• CA cache addition callback
• Export Base64_Encode for general use

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• CTaoCrypt Runtime library detection settings when directly using the crypto library
• Default certificate generation now uses SHAwRSA and adds SHA256wRSA generation
• All test certificates now use 2048bit and SHA-1 for better modern browser support
• Direct AES block access and AES-CTR (counter) mode
• Microchip pic32 support

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• updated autoconf support
• better make install and uninstall (uses system directories)
• make test / make check
• CyaSSL headers now in <cyassl/*.h>
• CTaocrypt headers now in <cyassl/ctaocrypt/*.h>
• OpenSSL compatibility headers now in <cyassl/openssl/*.h>
• examples and tests all run from home directory so can use certs in ./certs (see note 1)

So previous applications that used the OpenSSL compatibility header <openssl/ssl.h> now need to include <cyassl/openssl/ssl.h> instead, no other changes are required.

Special Thanks to Brian Aker for his autoconf, install, and header patches.

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• bug fixes (Alerts, DTLS with DHE)
• FreeRTOS support
• lwIP support
• Wshadow warnings removed
• asn public header
• CTaoCrypt public headers now all have ctc_ prefix (the manual is still being updated to reflect this change)
• and more.

This is the 2nd and perhaps final release candidate for version 2. Please send any comments or questions to [email protected].

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

• bug fixes
• SHA-256 cipher suites
• Root Certificate Verification (instead of needing all certs in the chain)
• PKCS #8 private key encryption (supports PKCS #5 v1-v2 and PKCS #12)
• Serial number retrieval for x509
• PBKDF2 and PKCS #12 PBKDF
• UID parsing for x509
• SHA-256 certificate signatures
• Client and server can send chains (SSL_CTX_use_certificate_chain_file)
• CA loading can now parse multiple certificates per file
• Dynamic memory runtime hooks
• Runtime hooks for logging
• EDH on server side
• More informative error codes
• More informative logging messages
• Version downgrade more robust (use SSL_v23*)
• Shared build only by default through ./configure
• Compiler visibility is now used, internal functions not polluting namespace
• Single Makefile, no recursion, for faster and simpler building
• Turn on all warnings possible build option, warning fixes
• and more.

Because of all the new features and the multiple OS, compiler, feature-set options that CyaSSL allows, there may be some configuration fixes needed. Please send any comments or questions to [email protected].

The CyaSSL manual is available at: https://www.yassl.com/documentation/CyaSSL-Manual.pdf. For build instructions and comments about the new features please check the manual.

Release 1.9.0 for CyaSSL adds bug fixes, improved TLSv1.2 through testing and better hash/sig algo ids, --enable-webServer for the yaSSL embedded web server, improper AES key setup detection, user cert verify callback improvements, and more.

The CyaSSL manual offering is included in the doc/ directory. For build instructions and comments about the new features please check the manual.

Please send any comments or questions to [email protected].

Release 1.8.0 for CyaSSL adds bug fixes, x509 v3 CA signed certificate generation, a C standard library abstraction layer, lower memory use, increased portability through the os_settings.h file, and the ability to use NTRU cipher suites when used in conjunction with an NTRU license and library.

The initial CyaSSL manual offering is included in the doc/ directory. For build instructions and comments about the new features please check the manual.

Please send any comments or questions to [email protected].

Happy Holidays.

Release 1.6.5 for CyaSSL adds bug fixes and x509 v3 self signed certificate generation.

For general build instructions see doc/Building_CyaSSL.pdf.

To enable certificate generation support add this option to ./configure ./configure --enable-certgen

An example is included in ctaocrypt/test/test.c and documentation is provided in doc/CyaSSL_Extensions_Reference.pdf item 11.

Release 1.6.0 for CyaSSL adds bug fixes, RIPEMD-160, SHA-512, and RSA key generation.

For general build instructions see doc/Building_CyaSSL.pdf.

To add RIPEMD-160 support add this option to ./configure ./configure --enable-ripemd

To add SHA-512 support add this option to ./configure ./configure --enable-sha512

To add RSA key generation support add this option to ./configure ./configure --enable-keygen

Please see ctaocrypt/test/test.c for examples and usage.

For Windows, RIPEMD-160 and SHA-512 are enabled by default but key generation is off by default. To turn key generation on add the define CYASSL_KEY_GEN to CyaSSL.

Release 1.5.6 for CyaSSL adds bug fixes, compatibility for our JSSE provider, and a fix for GCC builds on some systems.

For general build instructions see doc/Building_CyaSSL.pdf.

To add AES-NI support add this option to ./configure ./configure --enable-aesni

You'll need GCC 4.4.3 or later to make use of the assembly.

Release 1.5.4 for CyaSSL adds bug fixes, support for AES-NI, SHA1 speed improvements from loop unrolling, and support for the Mongoose Web Server.

For general build instructions see doc/Building_CyaSSL.pdf.

To add AES-NI support add this option to ./configure ./configure --enable-aesni

You'll need GCC 4.4.3 or later to make use of the assembly.

Release 1.5.0 for CyaSSL adds bug fixes, GoAhead WebServer support, sniffer support, and initial swig interface support.

For general build instructions see doc/Building_CyaSSL.pdf.

To add support for GoAhead WebServer either --enable-opensslExtra or if you don't want all the features of opensslExtra you can just define GOAHEAD_WS instead. GOAHEAD_WS can be added to ./configure with CFLAGS=-DGOAHEAD_WS or you can define it yourself.

To look at the sniffer support please see the sniffertest app in sslSniffer/sslSnifferTest. Build with --enable-sniffer on *nix or use the vcproj files on windows. You'll need to have pcap installed on *nix and WinPcap on windows.

A swig interface file is now located in the swig directory for using Python, Java, Perl, and others with CyaSSL. This is initial support and experimental, please send questions or comments to [email protected].

When doing load testing with CyaSSL, on the echoserver example say, the client machine may run out of tcp ephemeral ports, they will end up in the TIME_WAIT queue, and can't be reused by default. There are generally two ways to fix this.

1. Reduce the length sockets remain on the TIME_WAIT queue OR
2. Allow items on the TIME_WAIT queue to be reused.

To reduce the TIME_WAIT length in OS X to 3 seconds (3000 milliseconds)

sudo sysctl -w net.inet.tcp.msl=3000

In Linux

sudo sysctl -w net.ipv4.tcp_tw_reuse=1

allows reuse of sockets in TIME_WAIT

sudo sysctl -w net.ipv4.tcp_tw_recycle=1

works but seems to remove sockets from TIME_WAIT entirely?

sudo sysctl -w net.ipv4.tcp_fin_timeout=1

doen't control TIME_WAIT, it controls FIN_WAIT(2) contrary to some posts

Release 1.3.0 for CyaSSL adds bug fixes, better multi TLS/SSL version support through SSLv23_server_method(), and improved documentation in the doc/ folder.

For general build instructions doc/Building_CyaSSL.pdf.

Release 1.3.0 for CyaSSL adds bug fixes, a potential security problem fix, better porting support, removal of assert()s, and a complete THREADX port.

For general build instructions see rc1 below.

Release 1.2.0 for CyaSSL adds bug fixes and session negotiation if first use is read or write.

For general build instructions see rc1 below.

Release 1.1.0 for CyaSSL adds bug fixes, a check against malicious session cache use, support for lighttpd, and TLS 1.2.

To get TLS 1.2 support please use the client and server functions:

SSL_METHOD *TLSv1_2_server_method(void);
SSL_METHOD *TLSv1_2_client_method(void);

CyaSSL was tested against lighttpd 1.4.23. To build CyaSSL for use with lighttpd use the following commands from the CyaSSL install dir :

./configure --disable-shared --enable-opensslExtra --enable-fastmath --without-zlib

make
make openssl-links

Then to build lighttpd with CyaSSL use the following commands from the lighttpd install dir:

./configure --with-openssl --with-openssl-includes=<CyaSSLDir>/include --with-openssl-libs=<CyaSSLDir>/lib LDFLAGS=-lm

make

On some systems you may get a linker error about a duplicate symbol for MD5_Init or other MD5 calls. This seems to be caused by the lighttpd src file md5.c, which defines MD5_Init(), and is included in liblightcomp_la-md5.o. When liblightcomp is linked with the SSL_LIBs the linker may complain about the duplicate symbol. This can be fixed by editing the lighttpd src file md5.c and adding this line to the beginning of the file:

#if 0

and this line to the end of the file

#endif

Then from the lighttpd src dir do a:

make clean
make

If you get link errors about undefined symbols more than likely the actual OpenSSL libraries are found by the linker before the CyaSSL openssl-links that point to the CyaSSL library, causing the linker confusion. This can be fixed by editing the Makefile in the lighttpd src directory and changing the line:

SSL_LIB = -lssl -lcrypto

to

SSL_LIB = -lcyassl

Then from the lighttpd src dir do a:

make clean
make

This should remove any confusion the linker may be having with missing symbols.

For any questions or concerns please contact [email protected] .

For general build instructions see rc1 below.

Release 1.0.6 for CyaSSL adds bug fixes, an improved session cache, and faster math with a huge code option.

The session cache now defaults to a client mode, also good for embedded servers. For servers not under heavy load (less than 200 new sessions per minute), define BIG_SESSION_CACHE. If the server will be under heavy load, define HUGE_SESSION_CACHE.

There is now a fasthugemath option for configure. This enables fastmath plus even faster math by greatly increasing the code size of the math library. Use the benchmark utility to compare public key operations.

For general build instructions see rc1 below.

Release 1.0.3 for CyaSSL adds bug fixes and add increased support for OpenSSL compatibility when building other applications.

Release 1.0.3 includes an alpha release of DTLS for both client and servers. This is only for testing purposes at this time. Rebroadcast and reordering aren't fully implemented at this time but will be for the next release.

For general build instructions see rc1 below.

Release 1.0.2 for CyaSSL adds bug fixes for a couple I/O issues. Some systems will send a SIGPIPE on socket recv() at any time and this should be handled by the application by turning off SIGPIPE through setsockopt() or returning from the handler.

Release 1.0.2 includes an alpha release of DTLS for both client and servers. This is only for testing purposes at this time. Rebroadcast and reordering aren't fully implemented at this time but will be for the next release.

For general build instructions see rc1 below.

Release Candidate 3 for CyaSSL 1.0.0 adds bug fixes and adds a project file for iPhone development with Xcode. cyassl-iphone.xcodeproj is located in the root directory. This release also includes a fix for supporting other implementations that bundle multiple messages at the record layer, this was lost when cyassl i/o was re-implemented but is now fixed.

For general build instructions see rc1 below.

Release Candidate 2 for CyaSSL 1.0.0 adds bug fixes and adds two new stream ciphers along with their respective cipher suites. CyaSSL adds support for HC-128 and RABBIT stream ciphers. The new suites are:

TLS_RSA_WITH_HC_128_SHA
TLS_RSA_WITH_RABBIT_SHA

And the corresponding cipher names are

HC128-SHA
RABBIT-SHA

CyaSSL also adds support for building with devkitPro for PPC by changing the library proper to use libogc. The examples haven't been changed yet but if there's interest they can be. Here's an example ./configure to build CyaSSL for devkitPro:

./configure --disable-shared CC=/pathTo/devkitpro/devkitPPC/bin/powerpc-gekko-gcc --host=ppc --without-zlib --enable-singleThreaded RANLIB=/pathTo/devkitpro/devkitPPC/bin/powerpc-gekko-ranlib CFLAGS="-DDEVKITPRO -DGEKKO"

For linking purposes you'll need

LDFLAGS="-g -mrvl -mcpu=750 -meabi -mhard-float -Wl,-Map,$(notdir $@).map"

For general build instructions see rc1 below.

Release Candidate 1 for CyaSSL 1.0.0 contains major internal changes. Several areas have optimization improvements, less dynamic memory use, and the I/O strategy has been refactored to allow alternate I/O handling or Library use. Many thanks to Thierry Fournier for providing these ideas and most of the work.

Because of these changes, this release is only a candidate since some problems are probably inevitable on some platform with some I/O use. Please report any problems and we'll try to resolve them as soon as possible. You can contact us at [email protected] or [email protected].

Using TomsFastMath by passing --enable-fastmath to ./configure now uses assembly on some platforms. This is new so please report any problems as every compiler, mode, OS combination hasn't been tested. On ia32 all of the registers need to be available so be sure to pass these options to CFLAGS:

CFLAGS="-O3 -fomit-frame-pointer"

OS X will also need -mdynamic-no-pic added to CFLAGS

Also if you're building in shared mode for ia32 you'll need to pass options to LDFLAGS as well on OS X:

LDFLAGS=-Wl,-read_only_relocs,warning

This gives warnings for some symbols but seems to work.

./configure
make

from the ./testsuite/ directory run ./testsuite 

./configure --enable-debug --disable-shared
make

Choose (Re)Build All from the project workspace

Run the testsuite program

This release of CyaSSL adds bug fixes, Pre-Shared Keys, over-rideable memory handling, and optionally TomsFastMath. Thanks to Moisés Guimarães for the work on TomsFastMath.

To optionally use TomsFastMath pass --enable-fastmath to ./configure Or define USE_FAST_MATH in each project from CyaSSL for MSVC.

Please use the benchmark routine before and after to see the performance difference, on some platforms the gains will be little but RSA encryption always seems to be faster. On x86-64 machines with GCC the normal math library may outperform the fast one when using CFLAGS=-m64 because TomsFastMath can't yet use -m64 because of GCCs inability to do 128bit division.

 *** UPDATE GCC 4.2.1 can now do 128bit division ***

See notes below (0.2.0) for complete build instructions.

This release of CyaSSL adds bug fixes, client side Diffie-Hellman, and better socket handling.

See notes below (0.2.0) for complete build instructions.

This release of CyaSSL adds bug fixes, increased session management, and a fix for gnutls.

See notes below (0.2.0) for complete build instructions.

This release of CyaSSL adds bug fixes, MSVC 2005 support, GCC 4.2 support, IPV6 support and test, and new test certificates.

See notes below (0.2.0) for complete build instructions.

This release of CyaSSL adds increased socket support, for non-blocking writes, connects, and interrupted system calls.

See notes below (0.2.0) for complete build instructions.

This release of CyaSSL adds debug logging to stderr to aid in the debugging of CyaSSL on systems that may not provide the best support.

If CyaSSL is built with debugging support then you need to call CyaSSL_Debugging_ON() to turn logging on.

On Unix use ./configure --enable-debug

On Windows define DEBUG_CYASSL when building CyaSSL

To turn logging back off call CyaSSL_Debugging_OFF()

See notes below (0.2.0) for complete build instructions.

This release of CyaSSL adds TLS 1.1.

Note that CyaSSL has certificate verification on by default, unlike OpenSSL. To emulate OpenSSL behavior, you must call SSL_CTX_set_verify() with SSL_VERIFY_NONE. In order to have full security you should never do this, provide CyaSSL with the proper certificates to eliminate impostors and call CyaSSL_check_domain_name() to prevent man in the middle attacks.

See notes below (0.2.0) for build instructions.

This release of CyaSSL adds more SSL functions, better autoconf, nonblocking I/O for accept, connect, and read. There is now an --enable-small configure option that turns off TLS, AES, DES3, HMAC, and ERROR_STRINGS, see configure.in for the defines. Note that TLS requires HMAC and AES requires TLS.

See notes below (0.2.0) for build instructions.

This mini release of CyaSSL adds better input processing through buffered input and big message support. Added SSL_pending() and some sanity checks on user settings.

See notes below (0.2.0) for build instructions.

This release of CyaSSL adds AES support and minor bug fixes.

See notes below (0.2.0) for build instructions.

This release of CyaSSL adds TLSv1 client/server support and libtool.

See notes below for build instructions.

This release of CyaSSL adds SSLv3 server support and session resumption.

See notes below for build instructions.

This is the first release of CyaSSL and its crypt brother, CTaoCrypt. CyaSSL is written in ANSI C with the idea of a small code size, footprint, and memory usage in mind. CTaoCrypt can be as small as 32K, and the current client version of CyaSSL can be as small as 12K.

The first release of CTaoCrypt supports MD5, SHA-1, 3DES, ARC4, Big Integer Support, RSA, ASN parsing, and basic x509 (en/de)coding.

The first release of CyaSSL supports normal client RSA mode SSLv3 connections with support for SHA-1 and MD5 digests. Ciphers include 3DES and RC4.

./configure
make

from the ./testsuite/ directory run ./testsuite 

./configure --enable-debug --disable-shared
make

Choose (Re)Build All from the project workspace

Run the testsuite program

*** The next release of CyaSSL will support a server and more OpenSSL compatibility functions.

Please send questions or comments to [email protected]