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Fix mpi_write_string() to write "00" as hex output for empty MPI

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This commit is contained in:
Paul Bakker 2014-07-10 14:36:19 +02:00
parent 5b11d026cd
commit 6c343d7d9a
3 changed files with 9 additions and 1 deletions
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2
ChangeLog
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@ -66,6 +66,8 @@ Bugfix
* Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
* Fix base64_decode() to return and check length correctly (in case of
tight buffers)
* Fix mpi_write_string() to write "00" as hex output for empty MPI (found
by Hui Dong)
= PolarSSL 1.3.7 released on 2014-05-02
Features

2
library/bignum.c
View File

@ -530,7 +530,7 @@ int mpi_write_string( const mpi *X, int radix, char *s, size_t *slen )
{
c = ( X->p[i - 1] >> ( ( j - 1 ) << 3) ) & 0xFF;
if( c == 0 && k == 0 && ( i + j + 3 ) != 0 )
if( c == 0 && k == 0 && ( i + j ) != 2 )
continue;
*(p++) = "0123456789ABCDEF" [c / 16];

6
tests/suites/test_suite_mpi.data
View File

@ -37,6 +37,12 @@ mpi_read_write_string:10:"29":15:"1e":100:0:0
Test mpi_read_write_string #7
mpi_read_write_string:10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924":16:"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":200:0:0
Test mpi_read_write_string #8 (Empty MPI -> hex)
mpi_read_write_string:16:"":16:"00":4:0:0
Test mpi_read_write_string #9 (Empty MPI -> dec)
mpi_read_write_string:16:"":10:"0":4:0:0
Base test mpi_read_binary #1
mpi_read_binary:"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924"