pakery_spake2/
error.rs

1//! SPAKE2-specific error types.
2
3use core::fmt;
4
5/// Errors that can occur during SPAKE2 protocol execution.
6#[derive(Debug)]
7pub enum Spake2Error {
8    /// A received point could not be decoded as a valid group element.
9    InvalidPoint,
10    /// A computed or received point is the group identity element.
11    IdentityPoint,
12    /// MAC confirmation of the peer's key failed.
13    ConfirmationFailed,
14    /// An internal protocol error occurred.
15    InternalError(&'static str),
16}
17
18impl fmt::Display for Spake2Error {
19    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
20        match self {
21            Spake2Error::InvalidPoint => write!(f, "invalid point encoding"),
22            Spake2Error::IdentityPoint => write!(f, "identity point encountered"),
23            Spake2Error::ConfirmationFailed => write!(f, "key confirmation failed"),
24            Spake2Error::InternalError(msg) => write!(f, "internal error: {msg}"),
25        }
26    }
27}
28
29#[cfg(feature = "std")]
30impl std::error::Error for Spake2Error {}
31
32impl From<pakery_core::PakeError> for Spake2Error {
33    fn from(e: pakery_core::PakeError) -> Self {
34        match e {
35            pakery_core::PakeError::InvalidPoint => Spake2Error::InvalidPoint,
36            pakery_core::PakeError::IdentityPoint => Spake2Error::IdentityPoint,
37            pakery_core::PakeError::ProtocolError(msg) => Spake2Error::InternalError(msg),
38            pakery_core::PakeError::InvalidInput(msg) => Spake2Error::InternalError(msg),
39        }
40    }
41}
42
43impl From<Spake2Error> for pakery_core::PakeError {
44    fn from(e: Spake2Error) -> Self {
45        match e {
46            Spake2Error::InvalidPoint => pakery_core::PakeError::InvalidPoint,
47            Spake2Error::IdentityPoint => pakery_core::PakeError::IdentityPoint,
48            Spake2Error::ConfirmationFailed => {
49                pakery_core::PakeError::ProtocolError("key confirmation failed")
50            }
51            Spake2Error::InternalError(msg) => pakery_core::PakeError::ProtocolError(msg),
52        }
53    }
54}
pakery_spake2/error.rs

pakery_spake2/
error.rs
