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82f9a8e69d
Changes:
20210425:
- The new library jpeg.s7i has been added. This library supports the
JPEG image file format.
- The new library huffman.s7i has been added. This library supports
Huffman coding as it is used by JPEG files.
- In chkccomp.c the code to determine MINIMUM_TRUNC_ARGUMENT and
MAXIMUM_TRUNC_ARGUMENT has been improved. Many thanks to Zachary
Menzies for reporting problems with the Linux distribution Solus.
- The PKCS#1 v1.5 signature verification has been improved. Many
thanks go to Moosa Yahyazadeh for providing a bugs report for
seed7-pkcs1. The following improvements have been done:
- In pkcs1.s7i the function emsaPkcs1V15Decoding has been improved
to check that every padding byte is actually 16#ff and that at
least 8 padding bytes are present. (Point 1 of report)
- In pkcs1.s7i the functions rsaEncryptBytes() and rsaDecryptBytes()
have been removed and usages of them have been replaced with
rsassaPkcs1V15Encrypt() respectively rsassaPkcs1V15Decrypt().
(Point 2 of report)
- In x509cert.s7i the function validateSignature() has been improved
to compare the digest algorithm obtained from the certificate with
the digest algorithm stored in the ASN.1 digestAlgorithmIdentifier
of the decrypted signature. (Point 3 of report)
- The functions getRsaSignature() and getEcdsaSignature() have been
added to x509cert.s7i. These functions check that the encoded
message has not any trailing garbage bytes. (Point 4 of report)
- The functions getDigestAlgorithm(), showSignatureAlgorithm() and
getDigestFromSignatureAlgorithm() have been added to x509cert.s7i.
- In x509cert.s7i the function validateSignature() has been improved
to validate RSA and ECDSA (Elliptic Curve Digital Signature
Algorithm) signatures.
- In x509cert.s7i the type rsaSignatureType has been introduced and
getRsaSignature() has been changed to return a rsaSignatureType.
- The functions getRsaSignature() and getEcSignature() have been
moved from tls.s7 to x509cert.s7i. Calls of these functions in
verifySignature() have been adjusted.
- The function validateCertificates() has been added to tls.s7i.
- In tls.s7i the function processServerKeyExchange() has been improved
to trigger a handshake failure if verifySignature() fails.
- In elliptic.s7i the type ecdsaSignature has been renamed to
ecdsaSignatureType.
- In gethttp.s7i the function getHttpStatusCode has been improved
to work correctly, if there is no space after the status code.
- In integer.s7i the definitions of min() and max() have been improved
to use the ternary operator (a ? b : c).
- Several optimizations have been done in the compiler (s7c.sd7):
- In comp/prc_act.s7i the function process_prc_for() has been
improved to store the range of the for-variable if the start or
the end value is constant (or both are constant).
- In comp/intrange.s7i the function getIntRange() has been improved
to get a range for the action INT_MULT and for a for-variable (if
the start or the end value of the for-loop is constant).
Determining the maximum of INT_LSHIFT has been improved.
- In comp/drw_act.s7i the function drwRgbColor() is now defined as
macro, if the optimization level requires it (-oc3).
- In comp/arr_act.s7i in the function process_const_arr_idx() the
index check has been omitted, if it is known that the index is
always in the range of the constant array.
- In comp/int_act.s7i the actions INT_MULT and INT_MULT_ASSIGN have
been improved to use the builtin mult overflow function, if
available. The improvements were made in the functions
int_mult_with_overflow_check() and process_const_int_mult().
- The new function varChangedInStatements() has been added to
comp/prc_act.s7i.
- Code has been moved from process_prc_for() in comp/prc_act.s7i
to the new function defineForStartVariable in comp/expr_utl.s7i.
- In s7c.sd7 the initialisation of local arrays has been improved
to recognize if all elements of the array are the same. In
this case arrTimes(), arrMalloc(), malloc() or memset() are
used instead of copying an array. The functions canUseArrTimes()
and assignArrayValue() have been added, and the function
identical_values() has been moved.
- Tests for the operator &:= (append one element to an array) have
been added to chkarr.sd7.
- Tests for arrays with boolean elements have been added to
chkarr.sd7.
- Tests for the bitpattern of the minimum and maximum floats that can
be truncated to an integer have been added to chkflt.sd7.
- Tests for reduced overflow checking, if multiplication or lshift
leaves some space towards the maximum integer, have been added to
chkint.sd7.
- Tests of the ternary operator (a ? b : c) have been added to
chkint.sd7.
- In exec.c the function evaluate() has been improved to also work
for SETOBJECT.
- In soc_rtl.c the function socInetAddr() has been improved to
treat EAI_NODATA like EAI_NONAME.
- The program chkccomp.c has been improved to determine the macros
PIXEL_RED_MASK, PIXEL_GREEN_MASK PIXEL_BLUE_MASK and
RGB_TO_PIXEL_FLAG_NAME.
- Definitions of PIXEL_RED_MASK, PIXEL_GREEN_MASK, PIXEL_BLUE_MASK
and RGB_TO_PIXEL_FLAG_NAME have been added to cc_conf.s7i.
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