The max size of the 'SensitiveData' buffer is to big.

[Superhepper]

When calculating what size to use as max size for the SensitiveData buffer the following expression is used ::std::mem::size_of::<TPM2B_SENSITIVE_DATA>(). This is incorrect this will include the size value (an u16 value) when calculating the maximum size of the buffer. Which in turn means it would be possible to create a structure that contains more data then is allowed.

The following test shows the issue:

#[test]
fn test_conversion_from_max_size_buffer() {
    let data = vec![1u8; SensitiveData::MAX_SIZE];
    let sensitive_data = SensitiveData::try_from(data)
        .expect("It should be possible to convert maximum amount of data into SensitiveData.");
    TPM2B_SENSITIVE_DATA::try_from(sensitive_data)
        .expect("It should be possible to valid convert SensitiveData into TPM2B_SENSITIVE_DATA.");
}

That test will create the following error:

running 1 test
thread 'structures_tests::buffers_tests::sensitive_create_buffer_tests::test_conversion_from_max_size_buffer' panicked at tss-esapi/src/structures/buffers.rs:357:5:
range end index 258 out of range for slice of length 256