pq_msg/
errors.rs

1use std::array::TryFromSliceError;
2
3use pqcrypto_falcon::ffi::PQCLEAN_FALCON1024_AVX2_CRYPTO_BYTES;
4
5pub type Result<T> = std::result::Result<T, CryptoError>;
6
7#[derive(Debug)]
8pub enum CryptoError {
9    InvalidSignature,
10    UnknownVerificationError,
11    PQCryptoError(pqcrypto_traits::Error),
12    InvalidKeyLength(crypto_common::InvalidLength),
13    ChaCha20Poly1305EncryptionError(chacha20poly1305::Error),
14    IncongruentLength(usize, usize),
15    FalconSignatureTooShort(usize),
16    SignatureVerificationFailed,
17    TryFromSliceError(TryFromSliceError),
18}
19
20impl std::fmt::Display for CryptoError {
21    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
22        match self {
23            CryptoError::PQCryptoError(e) => e.fmt(f),
24            CryptoError::UnknownVerificationError => write!(f, "Unknown verification error"),
25            CryptoError::InvalidSignature => write!(f, "Invalid signature"),
26            CryptoError::InvalidKeyLength(e) => e.fmt(f),
27            CryptoError::ChaCha20Poly1305EncryptionError(e) => e.fmt(f),
28            CryptoError::IncongruentLength(expected, actual) => {
29                write!(
30                    f,
31                    "Incongruent length: expected {}, got {}",
32                    expected, actual
33                )
34            }
35            CryptoError::SignatureVerificationFailed => {
36                write!(f, "Signature verification failed")
37            }
38            CryptoError::FalconSignatureTooShort(len) => {
39                write!(
40                    f,
41                    "Signature too short: expected at least {} bytes, got {}",
42                    PQCLEAN_FALCON1024_AVX2_CRYPTO_BYTES, len
43                )
44            }
45            CryptoError::TryFromSliceError(e) => e.fmt(f),
46        }
47    }
48}
49
50impl std::error::Error for CryptoError {}
51
52impl From<pqcrypto_traits::Error> for CryptoError {
53    fn from(e: pqcrypto_traits::Error) -> Self {
54        CryptoError::PQCryptoError(e)
55    }
56}
57
58impl From<crypto_common::InvalidLength> for CryptoError {
59    fn from(e: crypto_common::InvalidLength) -> Self {
60        CryptoError::InvalidKeyLength(e)
61    }
62}
63
64impl From<chacha20poly1305::Error> for CryptoError {
65    fn from(e: chacha20poly1305::Error) -> Self {
66        CryptoError::ChaCha20Poly1305EncryptionError(e)
67    }
68}
69
70impl From<TryFromSliceError> for CryptoError {
71    fn from(e: TryFromSliceError) -> Self {
72        CryptoError::TryFromSliceError(e)
73    }
74}
pq_msg/errors.rs

pq_msg/
errors.rs
