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//! Additional SRP types.
use num_bigint::BigUint;
use std::fmt;
/// SRP authentication error.
#[derive(Debug, Clone, Eq, PartialEq)]
pub enum SrpAuthError {
IllegalParameter(String),
BadRecordMac(String),
}
impl fmt::Display for SrpAuthError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
SrpAuthError::IllegalParameter(param) => {
write!(f, "illegal_parameter: bad '{}' value", param)
}
SrpAuthError::BadRecordMac(param) => {
write!(f, "bad_record_mac: incorrect '{}' proof", param)
}
}
}
}
/// Group used for SRP computations
#[derive(Debug, Clone, Eq, PartialEq)]
pub struct SrpGroup {
/// A large safe prime (N = 2q+1, where q is prime)
pub n: BigUint,
/// A generator modulo N
pub g: BigUint,
}
#[cfg(test)]
mod tests {
use crate::groups::G_1024;
use crate::utils::compute_k;
use sha1::Sha1;
#[test]
fn test_k_1024_sha1() {
let k = compute_k::<Sha1>(&G_1024).to_bytes_be();
assert_eq!(&k, include_bytes!("test/k_sha1_1024.bin"));
}
}
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