Changes since v4.5.0:
wolfSSL Release 4.6.0 (December 22, 2020)
Release 4.6.0 of wolfSSL embedded TLS has bug fixes and new features including:
New Feature Additions
New Build Options
* wolfSSL now enables linux kernel module support. Big news for Linux kernel
module developers with crypto requirements! wolfCrypt and wolfSSL are now
loadable as modules in the Linux kernel, providing the entire libwolfssl
API natively to other kernel modules. For the first time on Linux, the
entire TLS protocol stack can be loaded as a module, allowing fully
kernel-resident TLS/DTLS endpoints with in-kernel handshaking.
(--enable-linuxkm, --enable-linuxkm-defaults, --with-linux-source)
(https://www.wolfssl.com/loading-wolfssl-into-the-linux-kernel/)
* Build tests and updated instructions for use with Apple’s A12Z chipset
(https://www.wolfssl.com/preliminary-cryptographic-benchmarks-on-new-apple-a12z-bionic-platform/)
* Expansion of wolfSSL SP math implementation and addition of
--enable-sp-math-all build option
* Apache httpd w/TLS 1.3 support added
* Sniffer support for TLS 1.3 and AES CCM
* Support small memory footprint build with only TLS 1.3 and PSK without
code for (EC)DHE and certificates
New Hardware Acceleration
* Added support for NXP DCP (i.MX RT1060/1062) crypto co-processor
* Add Silicon Labs hardware acceleration using SL SE Manager
New Algorithms
* RC2 ECB/CBC added for use with PKCS#12 bundles
* XChaCha and the XChaCha20-Poly1305 AEAD algorithm support added
Misc
* Added support for 802.11Q VLAN frames to sniffer
* Added OCSP function wolfSSL_get_ocsp_producedDate
* Added API to set CPU ID flags cpuid_select_flags, cpuid_set_flag,
cpuid_clear_flag
* New DTLS/TLS non-blocking Secure Renegotiation example added to server.c
and client.c
Fixes
Math Library
* Fix mp_to_unsigned_bin_len out of bounds read with buffers longer than
maximum MP
* Fix for fp_read_radix_16 out of bounds read
* Fix to add wrapper for new timing resistant wc_ecc_mulmod_ex2 function
version in HW ECC acceleration
* Handle an edge case with RSA-PSS encoding message to hash
Compatibility Layer Fixes
* Fix for setting serial number wolfSSL_X509_set_serialNumber
* Fix for setting ASN1 time not before / not after with WOLFSSL_X509
* Fix for order of components in issuer name when using X509_sign
* Fix for compatibility layer API DH_compute_key
* EVP fix incorrect block size for GCM and buffer up AAD for
encryption/decryption
* EVP fix for AES-XTS key length return value and fix for string compare
calls
* Fix for mutex freeing during RNG failure case with EVP_KEY creation
* Non blocking use with compatibility layer BIOs in TLS connections
Build Configuration
* Fix for custom build with WOLFSSL_USER_MALLOC defined
* ED448 compiler warning on Intel 32bit systems
* CURVE448_SMALL build fix for 32bit systems with Curve448
* Fix to build SP math with IAR
* CMake fix to only set ranlib arguments for Mac, and for stray typo of
, -> ;
* Build with --enable-wpas=small fix
* Fix for building fips ready using openssl extra
* Fixes for building with Microchip (min/max and undef SHA_BLOCK_SIZE)
* FIx for NO_FILESYSTEM build on Windows
* Fixed SHA256 support for IMX-RT1060
* Fix for ECC key gen with NO_TFM_64BIT
Sniffer
* Fixes for sniffer when using static ECC keys. Adds back TLS v1.2 static
ECC key fallback detection and fixes new ECC RNG requirement for timing
resistance
* Fix for sniffer with SNI enabled to properly handle WOLFSSL_SUCCESS error
code in ProcessClientHello
* Fix for sniffer using HAVE_MAX_FRAGMENT in "certificate" type message
* Fix build error with unused "ret" when building with WOLFSSL_SNIFFER_WATCH.
* Fix to not treat cert/key not found as error in myWatchCb and
WOLFSSL_SNIFFER_WATCH.
* Sniffer fixes for handling TCP out-of-range sequence number
* Fixes SSLv3 use of ECDH in sniffer
PKCS
* PKCS#11 fix to generate ECC key for decrypt/sign or derive
* Fix for resetting internal variables when parsing a malformed PKCS#7
bundle with PKCS7_VerifySignedData()
* Verify the extracted public key in wc_PKCS7_InitWithCert
* Fix for internal buffer size when using decompression with PKCS#7
Misc
* Pin the C# verify callback function to keep from garbage collection
* DH fixes for when public key is owned and free’d after a handshake
* Fix for TLS 1.3 early data packets
* Fix for STM32 issue with some Cube HAL versions and STM32 example timeout
* Fix mmCAU and LTC hardware mutex locking to prevent double lock
* Fix potential race condition with CRL monitor
* Fix for possible malformed encrypted key with 3DES causing negative length
* AES-CTR performance fixed with AES-NI
Improvements/Optimizations
SP and Math
* mp_radix_size adjustment for leading 0
* Resolve implicit cast warnings with SP build
* Change mp_sqr to return an error if the result won't fit into the fixed
length dp
* ARM64 assembly with clang improvements, clang doesn't always handle use of
x29 (FP or Frame Pointer) in inline assembly code correctly - reworked
sp_2048_sqr_8 to not use x29
* SP mod exp changed to support exponents of different lengths
* TFM div: fix initial value of size in q so clamping doesn't OOB read
* Numerous stack depth improvements with --enable-smallstack
* Improve cache resistance with Base64 operations
TLS 1.3
* TLS 1.3 wolfSSL_peek want read return addition
* TLS 1.3: Fix P-521 algorithm matching
PKCS
* Improvements and refactoring to PKCS#11 key look up
* PKCS #11 changes for signing and loading RSA public key from private
* check PKCS#7 SignedData private key is valid before using it
* check PKCS#7 VerifySignedData content length against total bundle size
to avoid large malloc
Compatibility Layer
* EVP add block size for more ciphers in wolfSSL_EVP_CIPHER_block_size()
* Return long names instead of short names in wolfSSL_OBJ_obj2txt()
* Add additional OpenSSL compatibility functions to update the version of
Apache httpd supported
* add "CCM8" variants to cipher_names "CCM-8" ciphers, for OpenSSL compat
Builds
* Cortex-M SP ASM support for IAR 6.70
* STM Cube pack support (IDE/STM32Cube)
* Build option --enable-aesgcm=4bit added for AES-GCM GMULT using 4 bit
table
* Xilinx IDE updates to allow XTIME override for Xilinx, spelling fixes in
Xilinx README.md, and add Xilinx SDK printf support
* Added ED448 to the "all" options and ED448 check key null argument sanity
check
* Added ARC4, 3DES, nullcipher, BLAKE2, BLAKE2s, XChaCha, MD2, and MD4 to
the “all” options
* Added an --enable-all-crypto option, to enable only the wolfCrypt features
of --enable-all, combinable with --enable-cryptonly
* Added the ability to selectively remove features from --enable-all and
--enable-all-crypto using specific --disable- options
* Use Intel intrinsics with Windows for RDSEED and RDRAND
(thanks to dr-m from MariaDB)
* Add option to build with WOLFSSL_NO_CLIENT_AUTH
* Updated build requirements for wolfSSH use to be less restrictive
* lighttpd support update for v1.4.56
* Added batch file to copy files to ESP-IDF folders and resolved warnings
when using v4.0 ESP-IDF
* Added --enable-stacksize=verbose, showing at a glance the stack high water
mark for each subtest in testwolfcrypt
ECC
* Performance increase for ECC verify only, using non constant time SP modinv
* During ECC verify add validation of r and s before any use
* Always use safe add and dbl with ECC
* Timing resistant scalar multiplication updated with use of Joye double-add
ladder
* Update mp_jacobi function to reduce stack and increase performance for
base ECC build
* Reduce heap memory use with wc_EccPrivateKeyDecode, Improvement to
ECC wc_ecc_sig_to_rs and wc_ecc_rs_raw_to_sig to reduce memory use (avoid the mp_int)
* Improve StoreECC_DSA_Sig bounds checking
OCSP
* OCSP improvement to handle extensions in singleResponse
* support for OCSP request/response for multiple certificates
* OCSP Must Staple option added to require OCSP stapling response
* Add support for id-pkix-ocsp-nocheck extension
Misc
* Additional code coverage added for ECC and RSA, PKCS#7, 3DES, EVP and
Blake2b operations
* DTLS MTU: check MTU on write
* Refactor hash sig selection and add the macros WOLFSSL_STRONGEST_HASH_SIG
(picks the strongest hash) and WOLFSSL_ECDSA_MATCH_HASH (will pick the
hash to match the ECC curve)
* Strict certificate version allowed from client, TLS 1.2 / 1.3 can not
accept client certificates lower than version 3
* wolfSSL_get_ciphers_compat(), skip the fake indicator ciphers like the
renegotiation indication and the quantum-safe hybrid
* When parsing session ticket, check TLS version to see whether they are
version compatible
* Additional sanity check for invalid ASN1 padding on integer type
* Adding in ChaCha20 streaming feature with Mac and Intel assembly build
* Sniffer build with --enable-oldtls option on
Changes since v4.3.0:
wolfSSL Release 4.4.0 (04/22/2020)
If you have questions about this release, feel free to contact us on our
info@ address.
Release 4.4.0 of wolfSSL embedded TLS has bug fixes and new features including:
New Feature Additions
* Hexagon support.
* DSP builds to offload ECC verify operations.
* Certificate Manager callback support.
* New APIs for running updates to ChaCha20/Poly1305 AEAD.
* Support for use with Apache.
* Add support for IBM s390x.
* PKCS8 support for ED25519.
* OpenVPN support.
* Add P384 curve support to SP.
* Add BIO and EVP API.
* Add AES-OFB mode.
* Add AES-CFB mode.
* Add Curve448, X448, and Ed448.
* Add Renesas Synergy S7G2 build and hardware acceleration.
Fixes
* Fix for RSA public encrypt / private sign with RSA key sizes over 2048-bit.
* Correct misspellings.
* Secure renegotiation fix.
* Fix memory leak when using ATECC and non-SECP256R1 curves for sign, verify,
or shared secret.
* Fix for K64 MMCAU with WOLFSSL_SMALL_STACK_CACHE.
* Fix the RSA verify only build.
* Fix in SP C implementation for small stack.
* Fix using the auth key id extension is set, hash might not be present.
* Fix when flattening certificate structure to include the subject alt names.
* Fixes for building with ECC sign/verify only.
* Fix for ECC and no cache resistance.
* Fix memory leak in DSA.
* Fix build on minGW.
* Fix PemToDer() call in ProcessBuffer() to set more than ECC.
* Fix for using RSA without SHA-512.
* Add some close tags to the echoserver HTTP example output.
* Miscellaneous fixes and updates for static analysis reports.
* Fixes for time structure support.
* Fixes for VxWorks support.
* Fixes for Async crypto support.
* Fix cache resist compile to work with SP C code.
* Fixes for Curve25519 x64 asm.
* Fix for SP x64 div.
* Fix for DTLS edge case where CCS and Finished come out of order and the
retransmit pool gets flushed.
* Fix for infinite loop in SHA-1 with small inputs. Thanks to Peter W.
* Fix for FIPS Hmac where wc_HmacInit() isn't used. wc_HmacSetKey() needs
to initialize the Hmac structure. Type is set to NONE, and checked against
NONE, not 0.
* Fixes for SP RSA private operations.
* Fixes for Xilinx SDK and Zynq UltraScale+ MPSoC
* Fix leak when building with HAVE_AESGCM and NO_AES_DECRYPT. Thanks G.G.
* Fixes for building ECC without ASN.
* Fix for async TLSv1.3 issues.
* Fix wc_KeyPemToDer() with PKCS1 and empty key.
* Omit -fomit-frame-pointer from CFLAGS in configure.ac.
Improvements/Optimizations
* Qt 5.12 and 5.13 support.
* Added more digest types to Cryptocell RSA sign/verify.
* Some memory usage improvements.
* Speed improvements for mp_rand.
* Improvements to CRL and OCSP support.
* Refactor Poly1305 AEAD/MAC to reduce duplicate code.
* Add blinding to RSA key gen.
* Improvements to blinding.
* Improvement and expansion of OpenSSL Compatibility Layer.
* Improvements to ChaCha20.
* Improvements to X.509 processing.
* Improvements to ECC support.
* Improvement in detecting 64-bit support.
* Refactor to combine duplicate ECC parameter parsing code.
* Improve keyFormat to be set by algId and let later key parsing produce fail.
* Add test cases for 3072-bit and 4096-bit RSA keys.
* Improve signature wrapper and DH test cases.
* Improvements to the configure.ac script.
* Added constant time RSA q modinv p.
* Improve performance of SP Intel 64-bit asm.
* Added a few more functions to the ABI list.
* Improve TLS bidirectional shutdown behavior.
* OpenSSH 8.1 support.
* Improve performance of RSA/DH operations on x64.
* Add support for PKCS7/CMS Enveloped data with fragmented encrypted content.
* Example linker description for FIPS builds to enforce object ordering.
* C# wrapper improvements. Added TLS client example and TLSv1.3 methods.
* Allow setting MTU in DTLS.
* Improve PKCS12 create for outputting encrypted bundles.
* Constant time EC map to affine for private operations.
* Improve performance of RSA public key ops with TFM.
* Smaller table version of AES encrypt/decrypt.
* Support IAR with position independent code (ROPI).
* Improve speed of AArch64 assembly.
* Support AES-CTR with AES-NI.
* Support AES-CTR on esp32.
* Add a no malloc option for small SP math.
This release of wolfSSL includes fixes for 2 security vulnerabilities.
* For fast math, use a constant time modular inverse when mapping to affine
when operation involves a private key - keygen, calc shared secret, sign.
Thank you to Alejandro Cabrera Aldaya, Cesar Pereida García and
Billy Bob Brumley from the Network and Information Security Group (NISEC)
at Tampere University for the report.
* Change constant time and cache resistant ECC mulmod. Ensure points being
operated on change to make constant time. Thank you to Pietro Borrello at
Sapienza University of Rome.
For additional vulnerability information visit the vulnerability page at
https://www.wolfssl.com/docs/security-vulnerabilities/
See INSTALL file for build instructions.
More info can be found on-line at https://wolfssl.com/wolfSSL/Docs.html
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