50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
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#![no_std]
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#![no_main]
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use defmt::info;
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use embassy_executor::Spawner;
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use embassy_stm32::Config;
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use embassy_time::{Duration, Instant};
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use {defmt_rtt as _, panic_probe as _};
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use embassy_stm32::hash::*;
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use sha2::{Digest, Sha256};
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const TEST_STRING_1: &[u8] = b"hello world";
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) -> ! {
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let config = Config::default();
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let p = embassy_stm32::init(config);
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let hw_start_time = Instant::now();
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// Compute a digest in hardware.
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let mut hw_hasher = Hash::new(p.HASH);
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let mut context = hw_hasher.start(Algorithm::SHA256, DataType::Width8);
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hw_hasher.update(&mut context, TEST_STRING_1);
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let mut buffer: [u8; 32] = [0; 32];
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let hw_digest = hw_hasher.finish(context, &mut buffer);
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let hw_end_time = Instant::now();
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let hw_execution_time = hw_end_time - hw_start_time;
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let sw_start_time = Instant::now();
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// Compute a digest in software.
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let mut sw_hasher = Sha256::new();
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sw_hasher.update(TEST_STRING_1);
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let sw_digest = sw_hasher.finalize();
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let sw_end_time = Instant::now();
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let sw_execution_time = sw_end_time - sw_start_time;
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info!("Hardware Digest: {:?}", hw_digest);
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info!("Software Digest: {:?}", sw_digest[..]);
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info!("Hardware Execution Time: {:?}", hw_execution_time);
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info!("Software Execution Time: {:?}", sw_execution_time);
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assert_eq!(*hw_digest, sw_digest[..]);
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loop {}
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}
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