Enum StegoError 

pub enum StegoError {
    InvalidJpeg(JpegError),
    ImageTooSmall,
    ImageTooLarge,
    MessageTooLarge,
    FrameCorrupted,
    DecryptionFailed,
    InvalidUtf8,
    NoLuminanceChannel,
    Cancelled,
    KeyDerivationFailed,
    DuplicatePassphrase,
    ShadowEmbedFailed,
    InvalidVideo(String),
}

Errors that can occur during steganographic encoding or decoding.

Variants

InvalidJpeg(JpegError)

The cover image could not be parsed as a valid JPEG.

ImageTooSmall

The image is too small or has too few usable coefficients.

ImageTooLarge

The image dimensions exceed the maximum allowed (16384px / 200MP).

MessageTooLarge

The message is too large for the cover image’s embedding capacity.

FrameCorrupted

CRC check failed on the extracted payload frame.

DecryptionFailed

AES-GCM decryption failed (wrong passphrase or corrupted data).

InvalidUtf8

The extracted plaintext is not valid UTF-8.

NoLuminanceChannel

The cover image has no luminance component.

Cancelled

The operation was cancelled by the user.

KeyDerivationFailed

Argon2 key derivation failed (invalid parameters or internal error).

DuplicatePassphrase

Duplicate passphrase: each shadow layer must use a unique passphrase.

ShadowEmbedFailed

Shadow embedding failed cascade — encoder verification couldn’t recover the shadow message after escalating through all parity tiers [4, 8, 16, 32, 64, 128]. Caller can retry with a smaller primary message (less propagation), different gop_size/quality, or a different shadow passphrase.

InvalidVideo(String)

The video file is invalid or uses unsupported features.

Trait Implementations

impl Debug for StegoError

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

Formats the value using the given formatter.

impl Display for StegoError

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

Formats the value using the given formatter.

impl Error for StegoError

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<JpegError> for StegoError

fn from(e: JpegError) -> Self

Converts to this type from the input type.