Enum CryptoError 

pub enum CryptoError {
    Hashing(HashError),
    Signature(SignatureError),
    KeyManagement(KeyError),
    KeyDerivation(KeyDerivationError),
    Encryption,
    Decryption,
    Json(Error),
    Hex(FromHexError),
    InvalidSignatureLength,
    InvalidKeyLength,
    VerificationFailed,
    ConfigAlreadySet,
}

Comprehensive error type for all sentinel-crypto operations. This enum wraps all possible errors that can occur during cryptographic operations, providing a unified error handling interface. We use thiserror for ergonomic error handling while ensuring all sensitive information is properly abstracted.

Design choice: Single error enum prevents error type proliferation and allows for consistent error handling across the entire crypto crate. All errors are wrapped to avoid leaking implementation details. Sub-enums (HashError, SignatureError, KeyError) provide specific categorization while maintaining a flat top-level API.

Security consideration: Error messages are designed to not leak sensitive information about keys, signatures, or internal state. All cryptographic failures are abstracted to prevent side-channel attacks or information disclosure.

Variants

Hashing(HashError)

Errors related to hashing operations

Signature(SignatureError)

Errors related to signature operations

KeyManagement(KeyError)

Errors related to key management

KeyDerivation(KeyDerivationError)

Errors related to key derivation operations

Encryption

Errors related to encryption operations

Decryption

Errors related to decryption operations

Json(Error)

JSON serialization/deserialization errors

Hex(FromHexError)

Hex decoding errors

InvalidSignatureLength

Invalid signature length

InvalidKeyLength

Invalid key length

VerificationFailed

Verification failed

ConfigAlreadySet

Global config already set

Trait Implementations

impl Debug for CryptoError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for CryptoError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for CryptoError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for CryptoError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<FromHexError> for CryptoError

fn from(source: FromHexError) -> Self

Converts to this type from the input type.

impl From<HashError> for CryptoError

fn from(source: HashError) -> Self

Converts to this type from the input type.

impl From<KeyDerivationError> for CryptoError

fn from(source: KeyDerivationError) -> Self

Converts to this type from the input type.

impl From<KeyError> for CryptoError

fn from(source: KeyError) -> Self

Converts to this type from the input type.

impl From<SignatureError> for CryptoError

fn from(source: SignatureError) -> Self

Converts to this type from the input type.