1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

use std::result;

use base64::DecodeError;
use hex::FromHexError;
use pem::PemError;
use thiserror::Error;

use crate::utils::{ReadFileError, WriteFileError};

/// A specialized `std::result::Result` type for cryptographic errors.
pub type Result<T> = result::Result<T, Error>;

/// Cryptographic errors.
#[derive(Debug, Error)]
pub enum Error {
    /// Error resulting from creating or using asymmetric key types.
    #[error("asymmetric key error: {0}")]
    AsymmetricKey(String),

    /// Error resulting when decoding a type from a hex-encoded representation.
    #[error("parsing from hex: {0}")]
    FromHex(#[from] FromHexError),

    /// Error trying to read a secret key.
    #[error("secret key load failed: {0}")]
    SecretKeyLoad(ReadFileError),

    /// Error trying to read a public key.
    #[error("public key load failed: {0}")]
    PublicKeyLoad(ReadFileError),

    /// Error resulting when decoding a type from a base64 representation.
    #[error("decoding error: {0}")]
    FromBase64(#[from] DecodeError),

    /// Pem format error.
    #[error("pem error: {0}")]
    FromPem(String),

    /// DER format error.
    #[error("der error: {0}")]
    FromDer(#[from] derp::Error),

    /// Error trying to write a secret key.
    #[error("secret key save failed: {0}")]
    SecretKeySave(WriteFileError),

    /// Error trying to write a public key.
    #[error("public key save failed: {0}")]
    PublicKeySave(WriteFileError),
}

impl From<PemError> for Error {
    fn from(error: PemError) -> Self {
        Error::FromPem(error.to_string())
    }
}