Struct AeadDecryptCtx 

pub struct AeadDecryptCtx(/* private fields */);

AEAD decryption context.

Implementations

impl AeadDecryptCtx

pub fn new( alg: &CipherAlg, key: &[u8], iv: &[u8], params: Option<&Params<'_>>, ) -> Result<Self, ErrorStack>

Create an AEAD decryption context.

Panics

Panics if alg is not an AEAD cipher.

Errors

pub fn set_aad(&mut self, aad: &[u8]) -> Result<(), ErrorStack>

Set AAD before first update.

Panics

Panics if aad.len() > i32::MAX.

Errors

pub fn update( &mut self, input: &[u8], output: &mut [u8], ) -> Result<usize, ErrorStack>

Feed input into the cipher; write to output.

Errors

pub fn set_tag(&mut self, tag: &[u8]) -> Result<(), ErrorStack>

Set the expected authentication tag before finalize.

Panics

Panics if tag.len() > i32::MAX.

Errors

pub fn finalize(&mut self, output: &mut [u8]) -> Result<usize, ErrorStack>

Finalise — returns Err if authentication tag verification fails.

Errors