Enum PipelineError 

pub enum PipelineError {
    Validation(ValidationError),
    PHash(PHashError),
    Kdf(KdfError),
    Expand(ExpandError),
    Cost(CostError),
    Sizer(SizerError),
    Stc(StcError),
    Crypto(CryptoError),
    Output(OutputError),
}

Everything that can go wrong between a plaintext and a stego image.

The variants follow the order the layers run in, which is also the order in which a caller will meet them.

Variants

Validation(ValidationError)

The container image failed a validation gate of layer 1.

PHash(PHashError)

The container’s perceptual hash is not reproducible, or the salt of a stego image could not be recovered.

Kdf(KdfError)

Argon2id password stretching failed.

Expand(ExpandError)

HKDF-SHA3-512 expansion of the master key failed.

Cost(CostError)

The cost layer refused the container.

Sizer(SizerError)

The payload does not fit in the container.

Stc(StcError)

The Syndrome-Trellis coder refused the operation.

Crypto(CryptoError)

Compression, encryption or authentication failed.

Output(OutputError)

The stego image could not be written to disk.

Trait Implementations

impl Debug for PipelineError

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

Formats the value using the given formatter.

impl Display for PipelineError

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

Delegates to the wrapped error.

No prefix is added. The lower layers already phrase their messages for a user — “the message does not fit in this image”, “choose a container with more texture” — and wrapping them in “pipeline error: …” would only push the actionable part of the sentence further from the start of the line.

impl Error for PipelineError

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<CostError> for PipelineError

fn from(err: CostError) -> Self

Converts to this type from the input type.

impl From<CryptoError> for PipelineError

fn from(err: CryptoError) -> Self

Converts to this type from the input type.

impl From<ExpandError> for PipelineError

fn from(err: ExpandError) -> Self

Converts to this type from the input type.

impl From<KdfError> for PipelineError

fn from(err: KdfError) -> Self

Converts to this type from the input type.

impl From<OutputError> for PipelineError

fn from(err: OutputError) -> Self

Converts to this type from the input type.

impl From<PHashError> for PipelineError

fn from(err: PHashError) -> Self

Converts to this type from the input type.

impl From<SizerError> for PipelineError

fn from(err: SizerError) -> Self

Converts to this type from the input type.

impl From<StcError> for PipelineError

fn from(err: StcError) -> Self

Converts to this type from the input type.

impl From<ValidationError> for PipelineError

fn from(err: ValidationError) -> Self

Converts to this type from the input type.