use ring::digest::Context;
use ring::digest::SHA256;
pub fn gen(v: &[impl AsRef<[u8]>]) -> String {
let mut ctx = Context::new(&SHA256);
for src in v {
ctx.update(src.as_ref());
}
let digest = ctx.finish();
let out: Vec<String> = digest
.as_ref()
.iter()
.map(|byte| format!("{:02x}", byte))
.collect();
out.join("")
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_gen() {
let actual = gen(&[b"hello world"]);
assert_eq!(
actual,
"b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"
);
}
}