- Fixed incorrect handling of negative strings in mpi_read_string() (found by code coverage tests).

2009-06-20 08:22:43 +00:00 · 2009-06-20 08:22:43 +00:00 · 05feca6f7c
commit 05feca6f7c
parent 80ab9f5eb5
2 changed files with 14 additions and 1 deletions
--- a/library/bignum.c
+++ b/library/bignum.c
@ -286,7 +286,15 @@ int mpi_read_string( mpi *X, int radix, char *s )

            MPI_CHK( mpi_get_digit( &d, radix, s[i] ) );
            MPI_CHK( mpi_mul_int( &T, X, radix ) );
-            MPI_CHK( mpi_add_int( X, &T, d ) );
+
+            if( X->s == 1 )
+            {
+                MPI_CHK( mpi_add_int( X, &T, d ) );
+            }
+            else
+            {
+                MPI_CHK( mpi_sub_int( X, &T, d ) );
+            }
        }
    }