3.2.2      2021-01-07
           Bugfix: Header field name is not found by canlock-mhp if there
            is another header field for which only the prefix differs (and
            that other field is processed first)
           Test suite for canlock-mhp parser extended: It now tests headers
            larger than 4 KiByte and for the field prefix bug fixed in this
           Lexer of canlock-hfp has problems to detect T_CTEXT tokens on
            HP-UX (relevant only if the header field contains comments).
            The syntax of the ERE for T_CTEXT was rewritten to be compatible
            with the SysV lex of HP-UX 11.11
           Test suite for canlock-hfp parser extended to test comments harder
           Namespace clash of internal library functions with libc on NetBSD
            Changed internal API function names hmac* to RFC2104Hmac*
            Changed internal API function names hkdf* to RFC5869Hkdf*
            Library API and ABI are fully compatible if no undocumented
            functions are used
           libcanlock-3.pc: Changed protocol in URL from http to https

3.2.1      2020-11-28
           Bugfix: off-by-one heap buffer overflow fixed in canlock-mhp
            (If header is larger than 4 KiByte. Found by Valgrind)
           Bugfix: canlock-mhp end of header detection fixed
            (Found by test suite on openSUSE. Reported by Martin Hauke)

3.2.0      2020-05-11
           Support for pkg-config with option "--enable-pc-files" added
            (Default behaviour is unchanged). This option installs the
            pkg-config file "libcanlock-3.pc". The standard option
            "--with-pkgconfigdir" can be used to specify the target directory
           Shared library no longer exports internal symbols, if possible
            (using #pragma GCC visibility). Library API and ABI are fully
            compatible if no undocumented functions are used.
           Build system: Distributed autotools files updated

3.1.1      2019-12-29
           Bugfix: Potential buffer overflows in code from RFC6234 fixed.
            Related code is used for test suite only, installed library and
            utilities are not affected (Reported by Florian Schlichting)
           Build system: Makefile rules fixed that use DIST_SUBDIRS variable
           src/canlock.c: Fixed typo in comment (Reported by Urs Janssen)

3.1.0      2019-01-26
           Merged canlock-hp into libcanlock package (now tracking the version
            number of the libcanlock package)
           Configure option "--disable-hp" added (Default is set to build
            canlock-hp, use this option to get the behaviour from 3.0.x)
           Manual page of canlock-hfp utility updated
           Library API and ABI are unchanged

3.0.3      2018-12-05
           Build system fixed for cross build (Patch suggested by Helmut Grohne,
            modified to work on macOS)

3.0.2      2018-08-18
           Configure option "--disable-legacy-api" added (Default behaviour is
           Test suite updated:
            API test 5 with <clue-string> removed (Obsolete since 20 years)
            API test 8 with unknown <scheme> added
            API test 9 with <scheme> mismatch added
           Manual page of canlock utility updated

3.0.1      2018-03-16
           Man page section numbers fixed (Patch from Florian Schlichting)
           Minimum required automake version set to 1.11.6 (there is a security
            vulnerability in 1.11.5)

3.0.0      2018-01-17
           API for arbitrary hash algorithm added (Written by Dennis Preiser)
           Support for SHA2 added (Using code from RFC6234 section 8)
           SHA1 implementation replaced (Using code from RFC6234 section 8)
           Function to overwrite secret data in memory added
           Command line utility added
           Test program for new API added
           Test program for SHA implementation replaced
           New portable build system added (Based on GNU autotools)
           Man pages added
           Release version scheme changed