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Fix parameter validation for mbedtls_mpi_lsb()

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The MPI_VALIDATE_RET() macro cannot be used for parameter
validation of mbedtls_mpi_lsb() because this function returns
a size_t.

Use the underlying MBEDTLS_INTERNAL_VALIDATE_RET() insteaed,
returning 0 on failure.

Also, add a test for this behaviour.
This commit is contained in:
Hanno Becker 2018-12-19 16:51:02 +00:00
parent 8ce11a323e
commit f25ee7f79d
2 changed files with 3 additions and 1 deletions
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2
library/bignum.c
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@ -380,7 +380,7 @@ cleanup:
size_t mbedtls_mpi_lsb( const mbedtls_mpi *X )
{
size_t i, j, count = 0;
MPI_VALIDATE_RET( X != NULL );
MBEDTLS_INTERNAL_VALIDATE_RET( X != NULL, 0 );
for( i = 0; i < X->n; i++ )
for( j = 0; j < biL; j++, count++ )