Module error

Expand description

Unified error type for cryptographic operations.

All fallible operations in this crate return Result<T>, which is std::result::Result<T, CryptoError>.

§Error categories

Variant	When it occurs
`CryptoError::InvalidKeyLength`	Key bytes are wrong size for the algorithm
`CryptoError::InvalidKey`	Key is malformed or fails validation
`CryptoError::InvalidNonceLength`	Nonce bytes are wrong size
`CryptoError::AuthenticationFailed`	Signature or AEAD tag verification failed
`CryptoError::Encryption`	Encryption failed (rare — usually a bug)
`CryptoError::Decryption`	Decryption failed (ciphertext tampered, wrong key, etc.)
`CryptoError::Kdf`	Key derivation failed (bad params, Argon2 failure, etc.)
`CryptoError::Pqc`	Post-quantum primitive failed
`CryptoError::ReedSolomon`	Error correction encode/decode failed
`CryptoError::InvalidParameter`	Invalid input parameter (empty seed, expired handle, etc.)
`CryptoError::Io`	Underlying I/O error
`CryptoError::Serialization`	Serialization or deserialization failed
`CryptoError::Compression`	Compression or decompression failed