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use hkdf::Hkdf;
use sha2::Sha256;
use crate::{
Result,
crypto::{
SessionKey,
backend::interface::Kdf,
},
};
impl Kdf for super::Backend {
fn hkdf_sha256(ikm: &SessionKey, salt: Option<&[u8]>, info: &[u8],
okm: &mut SessionKey)
-> Result<()>
{
Ok(Hkdf::<Sha256>::new(salt, &ikm).expand(info, okm)
.map_err(|e| crate::Error::InvalidOperation(e.to_string()))?)
}
}
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