neuron_encrypt_core/
error.rs

1// error.rs - Custom error types via thiserror
2// No egui imports. No crypto logic.
3
4use thiserror::Error;
5
6/// All errors that can occur during encryption/decryption operations.
7#[derive(Error, Debug)]
8pub enum CryptoError {
9    #[error("File too small to be a valid Neuron Encrypt file")]
10    FileTooSmall,
11
12    #[error("Not a valid Neuron Encrypt file (bad magic bytes)")]
13    InvalidMagic,
14
15    #[error("Unsupported file format version: {0}")]
16    UnsupportedVersion(String),
17
18    #[error("Wrong password or corrupted file")]
19    DecryptionFailed,
20
21    #[error("Argon2id key derivation failed: {0}")]
22    Argon2Failed(String),
23
24    #[error("HKDF key expansion failed: {0}")]
25    HkdfFailed(String),
26
27    #[error("Encryption failed: {0}")]
28    EncryptionFailed(String),
29
30    #[error("File too large ({size_gb:.1} GB). Maximum supported size is ~{max_gb:.1} GB.")]
31    FileTooLarge { size_gb: f64, max_gb: f64 },
32
33    #[error("Destination file already exists: {0}")]
34    FileAlreadyExists(std::path::PathBuf),
35
36    #[error("Invalid destination path: {0}")]
37    InvalidDestination(std::path::PathBuf),
38
39    #[error("Source and destination must be different files: {0}")]
40    SourceAndDestinationSame(std::path::PathBuf),
41
42    #[error("I/O error: {0}")]
43    Io(#[from] std::io::Error),
44
45    #[error("Not a regular file: {0}")]
46    NotAFile(std::path::PathBuf),
47
48    #[error("Invalid salt length: expected {expected} bytes, got {actual}")]
49    InvalidSaltLength { expected: usize, actual: usize },
50
51    #[error("Invalid nonce length: expected {expected} bytes, got {actual}")]
52    InvalidNonceLength { expected: usize, actual: usize },
53
54    #[error("Passphrase too short (minimum {0} bytes required)")]
55    PassphraseTooShort(usize),
56
57    #[error("Legacy V2 file exceeds the 1 GB memory limit — re-encrypt with V3 format")]
58    LegacyFileTooLarge,
59
60    #[error("Operation cancelled by user")]
61    Cancelled,
62}
63
64/// Result type alias for crypto operations.
65pub type CryptoResult<T> = Result<T, CryptoError>;
neuron_encrypt_core/error.rs

neuron_encrypt_core/
error.rs
