Struct yaca::SealContext

pub struct SealContext { /* fields omitted */ }

Context for Seal operations

Implementations

impl SealContext

pub fn initialize(
    pub_key: &Key,
    algo: &EncryptAlgorithm,
    bcm: &BlockCipherMode,
    sym_key_length: &KeyLength
) -> Result<(SealContext, Key, Option<Key>)>

Initializes an asymmetric encryption context and generates symmetric key and Initialization Vector

• pub_key is a key that the returned symmetric key will be encrypted with, it must be of KeyType::RsaPublic type.
• algo is an encryption algorithm used to encrypt the data.
• bcm is a chaining used to encrypt the data.
• sym_key_length defines the length of a generated symmetric key, it must be at least 88 bits shorter than the pub_key bit length.
• The function returns a tuple of context, generated and encrypted symmetric key and generated Initialization Vector of the default length for a given encryption configuration (or None).
• The generated symmetric key is encrypted with public key, so can be only used with OpenContext::initialize(). It can be exported, but after import it can be only used with OpenContext::initialize() as well.

pub fn update(&self, plaintext: &[u8]) -> Result<Vec<u8>>

Encrypts chunk of the data

• plaintext is a chunk of data to be encrypted.
• Returns a chunk of encrypted data.

pub fn finalize(&self) -> Result<Vec<u8>>

Encrypts the final chunk of the data

• Returns the final chunk of encrypted data.

Trait Implementations

impl ContextWithPadding for SealContext

pub fn set_property_padding(&self, padding: &Padding) -> Result<()>

Sets the Padding property

impl ContextWithRc2Supported for SealContext

pub fn set_property_rc2_effective_key_bits(
    &self,
    rc2_eff_key_bits: usize
) -> Result<()>

Sets the RC2 effective key bits property

impl ContextWithXcmEncryptProperties for SealContext

pub fn set_property_ccm_aad(
    &self,
    ccm_aad: &[u8],
    plaintext_len: usize
) -> Result<()>

Sets the CCM Additional Authentication Data

pub fn set_property_gcm_tag_len(&self, gcm_tag_len: usize) -> Result<()>

Sets the GCM tag length (in bytes)

pub fn get_property_gcm_tag(&self) -> Result<Vec<u8>>

Gets the GCM tag

pub fn set_property_gcm_aad(&self, gcm_aad: &[u8]) -> Result<()>

Sets the GCM Additional Authentication Data

pub fn set_property_ccm_tag_len(&self, ccm_tag_len: usize) -> Result<()>

Sets the CCM Tag length in bytes

pub fn get_property_ccm_tag(&self) -> Result<Vec<u8>>

Gets the CCM tag

impl Drop for SealContext

pub fn drop(&mut self)

Executes the destructor for this type.