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sas.rs
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sas.rs
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use super::Curve25519PublicKey;
pub struct Sas {
inner: Option<vodozemac::sas::Sas>,
public_key: vodozemac::Curve25519PublicKey,
}
pub fn new_sas() -> Box<Sas> {
let sas = vodozemac::sas::Sas::new();
let public_key = sas.public_key();
Box::new(Sas {
inner: Some(sas),
public_key,
})
}
impl Sas {
pub fn public_key(&self) -> Box<Curve25519PublicKey> {
Curve25519PublicKey(self.public_key).into()
}
pub fn diffie_hellman(
&mut self,
other_public_key: &Curve25519PublicKey,
) -> Result<Box<EstablishedSas>, anyhow::Error> {
if let Some(sas) = self.inner.take() {
let sas = sas.diffie_hellman(other_public_key.0)?;
Ok(Box::new(EstablishedSas { inner: sas }))
} else {
anyhow::bail!("The sas object has been already used")
}
}
}
pub struct Mac(vodozemac::sas::Mac);
pub fn mac_from_base64(mac: &str) -> Result<Box<Mac>, anyhow::Error> {
Ok(Mac(vodozemac::sas::Mac::from_base64(mac)?).into())
}
impl Mac {
pub fn to_base64(&self) -> String {
self.0.to_base64()
}
}
pub struct EstablishedSas {
inner: vodozemac::sas::EstablishedSas,
}
impl EstablishedSas {
pub fn bytes(&self, info: &str) -> Box<SasBytes> {
Box::new(SasBytes {
inner: self.inner.bytes(info),
})
}
pub fn calculate_mac(&self, input: &str, info: &str) -> Box<Mac> {
Mac(self.inner.calculate_mac(input, info)).into()
}
pub fn verify_mac(
&self,
input: &str,
info: &str,
tag: &Mac,
) -> Result<(), vodozemac::sas::SasError> {
self.inner.verify_mac(input, info, &tag.0)
}
}
pub struct SasBytes {
inner: vodozemac::sas::SasBytes,
}
impl SasBytes {
pub fn emoji_indices(&self) -> [u8; 7] {
self.inner.emoji_indices()
}
pub fn decimals(&self) -> [u16; 3] {
let (first, second, third) = self.inner.decimals();
[first, second, third]
}
}

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