I built a demo to calc Sha256，but got `Illegal instruction (core dumped)`. The Sha256 comes from crate [sha2](https://crates.io/crates/sha2).
```sh cd samplecode/helloworld BUILD_STD=cargo make cd bin ./app [+] Init Enclave Successful 2! This is a normal world string passed into Enclave! target_env = not sgx Illegal instruction (core dumped) ``` After some research，I found crate `cpufeatures` which `sha2`'s dependent library failed detect 'target_env = "sgx"', `cpufeatures` uses `cpuid` to check cpu features, then crash. And I found the file [x86_64-unknown-linux-sgx.json](https://github.com/apache/incubator-teaclave-sgx-sdk/blob/v2.0.0-preview/rustlib/x86_64-unknown-linux-sgx.json), assign `env` the value `gnu` , than's the problem, if I change `env` value from `gnu` to `sgx`, it's ok. ```sh [+] Init Enclave Successful 2! This is a normal world string passed into Enclave! target_env = sgx This is a in-Enclave Rust string! [+] ECall Success... ``` This is my demo codes: ```sh diff --git a/samplecode/helloworld/enclave/Cargo.toml b/samplecode/helloworld/enclave/Cargo.toml index 40d61163..81b6301a 100644 --- a/samplecode/helloworld/enclave/Cargo.toml +++ b/samplecode/helloworld/enclave/Cargo.toml @@ -31,3 +31,7 @@ default = [] [target.'cfg(not(target_vendor = "teaclave"))'.dependencies] sgx_types = { path = "../../../sgx_types" } sgx_tstd = { path = "../../../sgx_tstd" } + +[dependencies] +sha2 = "0.10.2" +hex-literal = "0.3.4" diff --git a/samplecode/helloworld/enclave/src/lib.rs b/samplecode/helloworld/enclave/src/lib.rs index 5fd6daf4..66984701 100644 --- a/samplecode/helloworld/enclave/src/lib.rs +++ b/samplecode/helloworld/enclave/src/lib.rs @@ -29,6 +29,9 @@ use std::slice; use std::string::String; use std::vec::Vec; +use hex_literal::hex; +use sha2::{Digest, Sha256, Sha512}; + /// # Safety #[no_mangle] pub unsafe extern "C" fn say_something(some_string: *const u8, some_len: usize) -> SgxStatus { @@ -53,6 +56,28 @@ pub unsafe extern "C" fn say_something(some_string: *const u8, some_len: usize) // Rust style convertion hello_string += String::from_utf8(word_vec).expect("Invalid UTF-8").as_str(); + let target_env = { + let mut s = String::new(); + + #[cfg(not(target_env = "sgx"))] + s.push_str("not sgx"); + + #[cfg(target_env = "sgx")] + s.push_str("sgx"); + + s + }; + println!("target_env = {}", target_env); + + let mut hasher = Sha256::new(); + // write input message + hasher.update(b"hello world"); + let result = hasher.finalize(); + assert_eq!( + result[..], + hex!("b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9")[..] + ); + // Ocall to normal world for output println!("{}", &hello_string); ``` Thanks. -- Reply to this email directly or view it on GitHub: https://github.com/apache/incubator-teaclave-sgx-sdk/issues/401 You are receiving this because you are subscribed to this thread. Message ID: <apache/incubator-teaclave-sgx-sdk/issues/4...@github.com>
