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Fix potential memory leak in EC multiplication

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Signed-off-by: Jonas <jonas.lejeune4420@gmail.com>
This commit is contained in:
Jonas 2020-05-08 16:57:18 +09:00
parent 5435451a1a
commit 6692a064e3
1 changed files with 8 additions and 2 deletions
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10
library/ecp.c
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@ -1544,7 +1544,10 @@ static int ecp_randomize_jac( const mbedtls_ecp_group *grp, mbedtls_ecp_point *p
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) );
if( count++ > 10 ) if( count++ > 10 )
return( MBEDTLS_ERR_ECP_RANDOM_FAILED ); {
ret = MBEDTLS_ERR_ECP_RANDOM_FAILED;
goto cleanup;
}
} }
while( mbedtls_mpi_cmp_int( &l, 1 ) <= 0 ); while( mbedtls_mpi_cmp_int( &l, 1 ) <= 0 );
@ -2278,7 +2281,10 @@ static int ecp_randomize_mxz( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) );
if( count++ > 10 ) if( count++ > 10 )
return( MBEDTLS_ERR_ECP_RANDOM_FAILED ); {
ret = MBEDTLS_ERR_ECP_RANDOM_FAILED;
goto cleanup;
}
} }
while( mbedtls_mpi_cmp_int( &l, 1 ) <= 0 ); while( mbedtls_mpi_cmp_int( &l, 1 ) <= 0 );