Struct AttachmentDecryptionStream 

pub struct AttachmentDecryptionStream { /* private fields */ }

Incremental authenticated decryption for a private staged destination.

update returns unauthenticated plaintext bytes. The host must write them only to a private temporary destination and must delete that destination unless Self::finish authenticates the final tag. No plaintext may be displayed, indexed, or atomically published before that success.

Implementations

impl AttachmentDecryptionStream

pub fn new(key_bytes: Vec<u8>, nonce: Vec<u8>) -> Result<Self, SoftchatError>

Start decryption from the 12-byte combined-format prefix.

Errors

Returns a stable failure for an invalid key or nonce length.

pub fn update(&self, ciphertext: Vec<u8>) -> Result<Vec<u8>, SoftchatError>

Decrypt one bounded ciphertext chunk into private staged bytes.

Errors

Returns a stable failure after finish/cancel or when bounds are exceeded.

pub fn finish( &self, authentication_tag: Vec<u8>, ) -> Result<AttachmentStreamFinal, SoftchatError>

Authenticate the final 16-byte tag before an atomic staged-file move.

Errors

Returns a stable decryption failure for a wrong key, tampering, invalid tag length, cancellation, or repeated finish.

pub fn cancel(&self)

Cancel and zeroize remaining stream state.

Trait Implementations

impl Debug for AttachmentDecryptionStream

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

Formats the value using the given formatter.

impl<UT> LiftRef<UT> for AttachmentDecryptionStream

type LiftType = Arc<AttachmentDecryptionStream>

impl<UT> LowerError<UT> for AttachmentDecryptionStream

fn lower_error(obj: Self) -> RustBuffer

Lower this value for scaffolding function return

impl<UT> LowerReturn<UT> for AttachmentDecryptionStream

type ReturnType = <Arc<AttachmentDecryptionStream> as LowerReturn<UniFfiTag>>::ReturnType

The type that should be returned by scaffolding functions for this type.

fn lower_return(obj: Self) -> Result<Self::ReturnType, RustCallError>

Lower the return value from an scaffolding call

fn handle_failed_lift( error: LiftArgsError, ) -> Result<Self::ReturnType, RustCallError>

Lower the return value for failed argument lifts

impl<UT> TypeId<UT> for AttachmentDecryptionStream

const TYPE_ID_META: MetadataBuffer