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- Fixed incorrect handling of one single negative input value in mpi_add_abs() (found by code coverage tests).

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Paul Bakker 2009-06-20 10:31:06 +00:00
parent 05feca6f7c
commit f7ca7b99dd
2 changed files with 7 additions and 0 deletions
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ChangeLog
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@ -4,6 +4,8 @@ PolarSSL ChangeLog
Bug fixes Bug fixes
* Fixed incorrect handling of negative strings in * Fixed incorrect handling of negative strings in
mpi_read_string() (found by code coverage tests). mpi_read_string() (found by code coverage tests).
* Fixed incorrect handling of one single negative input
value in mpi_add_abs() (found by code coverage tests).
= Version 0.11.1 released on 2009-05-17 = Version 0.11.1 released on 2009-05-17
* Fixed missing functionality for SHA-224, SHA-256, SHA384, * Fixed missing functionality for SHA-224, SHA-256, SHA384,

5
library/bignum.c
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@ -684,6 +684,11 @@ int mpi_add_abs( mpi *X, mpi *A, mpi *B )
if( X != A ) if( X != A )
MPI_CHK( mpi_copy( X, A ) ); MPI_CHK( mpi_copy( X, A ) );
/*
* X should always be positive as a result of unsigned additions.
*/
X->s = 1;
for( j = B->n - 1; j >= 0; j-- ) for( j = B->n - 1; j >= 0; j-- )
if( B->p[j] != 0 ) if( B->p[j] != 0 )
break; break;