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5 // to you under the Apache License, Version 2.0 (the
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9 //   http://www.apache.org/licenses/LICENSE-2.0
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14 // KIND, either express or implied.  See the License for the
15 // specific language governing permissions and limitations
16 // under the License.
17 
18 use optee_teec::{Context, Operation, ParamNone, ParamTmpRef, Session, Uuid};
19 use proto::{Command, UUID};
20 
random(session: &mut Session) -> optee_teec::Result<()>21 fn random(session: &mut Session) -> optee_teec::Result<()> {
22     let mut random_uuid = [0u8; 16];
23 
24     let p0 = ParamTmpRef::new_output(&mut random_uuid);
25     let mut operation = Operation::new(0, p0, ParamNone, ParamNone, ParamNone);
26 
27     println!("Invoking TA to generate random UUID...");
28     session.invoke_command(Command::RandomGenerator as u32, &mut operation)?;
29     println!("Invoking done!");
30 
31     let generate_uuid = Uuid::from_slice(&random_uuid).unwrap();
32 
33     println!("Generate random UUID: {}", generate_uuid);
34     Ok(())
35 }
36 
main() -> optee_teec::Result<()>37 fn main() -> optee_teec::Result<()> {
38     let mut ctx = Context::new()?;
39 
40     let uuid = Uuid::parse_str(UUID).unwrap();
41     let mut session = ctx.open_session(uuid)?;
42 
43     random(&mut session)?;
44 
45     println!("Success");
46     Ok(())
47 }
48