Struct One28BitCcmCiphertext 

pub struct One28BitCcmCiphertext {
    pub nonce: FixedOctetString<12>,
    pub ccm_ciphertext: Opaque,
}

Encapsulates encrypted ciphertext for symmetric algorithms with 128-bit blocks in CCM mode.

Characteristics

• Ciphertext is 16 bytes longer than plaintext (includes MAC)
• Successful decryption yields either:
  • COER-encoded Ieee1609Dot2Data structure (see 6.3.41)
  • 16-byte symmetric key (see 6.3.44)

Fields

• nonce: Contains nonce N as specified in 5.3.8
• ccm_ciphertext: Contains ciphertext C as specified in 5.3.8

Name Clarification

The “One28” in the structure name refers to:

• The symmetric cipher block size (128 bits)
• Not the key length (though AES-128-CCM and SM4-CCM happen to use 128-bit keys)

Since the cipher operates in counter mode (stream cipher):

• Block size only affects MAC size
• Does not affect raw ciphertext size

Fields

nonce: FixedOctetString<12>

ccm_ciphertext: Opaque

Implementations

impl One28BitCcmCiphertext

pub fn builder() -> One28BitCcmCiphertextBuilder

Create an instance of One28BitCcmCiphertext using the builder syntax

Trait Implementations

impl AsnType for One28BitCcmCiphertext

const TAG: Tag = { rasn::types::Tag::SEQUENCE }

The associated tag for the type.

const IDENTIFIER: Identifier

Identifier of an ASN.1 type as specified in the original specification if not identical with the identifier of Self

const TAG_TREE: TagTree = _

The root of this type’s tree of tag’s if it a CHOICE type, otherwise its Leaf that points Self::TAG.

const CONSTRAINTS: Constraints = Constraints::NONE

The set of constraints for values of the given type.

const IS_CHOICE: bool = false

Whether the type is choice type. PER/OER encoding rules require this knowledge.

fn is_present(&self) -> bool

Whether the type is present with value. OPTIONAL fields are common in SEQUENCE or SET.

impl Clone for One28BitCcmCiphertext

fn clone(&self) -> One28BitCcmCiphertext

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Constructed<2> for One28BitCcmCiphertext

const FIELDS: Fields<2usize>

Fields contained in the “root component list”.

const IS_EXTENSIBLE: bool = false

Whether the type is extensible.

const EXTENDED_FIELDS: Option<Fields<0usize>> = None

Fields contained in the list of extensions.

impl Debug for One28BitCcmCiphertext

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

Formats the value using the given formatter.

impl Decode for One28BitCcmCiphertext

fn decode_with_tag_and_constraints<_DECODER: Decoder>( decoder: &mut _DECODER, tag: Tag, constraints: Constraints, ) -> Result<Self, _DECODER::Error>

Decode this value implicitly tagged with tag from a given ASN.1 decoder with a set of constraints on what values of that type are allowed.

fn decode<D>(decoder: &mut D) -> Result<Self, <D as Decoder>::Error>

where D: Decoder,

Decode this value from a given ASN.1 decoder.

fn decode_with_tag<D>( decoder: &mut D, tag: Tag, ) -> Result<Self, <D as Decoder>::Error>

where D: Decoder,

Decode this value implicitly tagged with tag from a given ASN.1 decoder.

fn decode_with_constraints<D>( decoder: &mut D, constraints: Constraints, ) -> Result<Self, <D as Decoder>::Error>

where D: Decoder,

Decode this value from a given ASN.1 decoder with a set of constraints on what values of that type are allowed.

impl Encode for One28BitCcmCiphertext

fn encode_with_tag_and_constraints<'encoder, _ENCODER: Encoder<'encoder>>( &self, encoder: &mut _ENCODER, tag: Tag, constraints: Constraints, identifier: Identifier, ) -> Result<(), _ENCODER::Error>

Encode this value with tag into the given crate::Encoder with the constraints the values this is allowed to encode into.

fn encode<'b, E>( &self, encoder: &mut E, ) -> Result<(), <E as Encoder<'b>>::Error>

where E: Encoder<'b>,

Encodes self’s data into the given crate::Encoder.

fn encode_with_tag<'b, E>( &self, encoder: &mut E, tag: Tag, ) -> Result<(), <E as Encoder<'b>>::Error>

where E: Encoder<'b>,

Encode this value with tag into the given crate::Encoder.

fn encode_with_identifier<'b, E>( &self, encoder: &mut E, identifier: Identifier, ) -> Result<(), <E as Encoder<'b>>::Error>

where E: Encoder<'b>,

Encode this value with identifier into the given crate::Encoder.

fn encode_with_tag_and_identifier<'b, E>( &self, encoder: &mut E, tag: Tag, identifier: Identifier, ) -> Result<(), <E as Encoder<'b>>::Error>

where E: Encoder<'b>,

Encode this value with tag and identifier into the given crate::Encoder.

fn encode_with_constraints<'b, E>( &self, encoder: &mut E, constraints: Constraints, ) -> Result<(), <E as Encoder<'b>>::Error>

where E: Encoder<'b>,

Encode this value into the given crate::Encoder with the constraints the values this is allowed to encode into.

fn encode_with_constraints_and_identifier<'b, E>( &self, encoder: &mut E, constraints: Constraints, identifier: Identifier, ) -> Result<(), <E as Encoder<'b>>::Error>

where E: Encoder<'b>,

Encode this value into the given crate::Encoder with identifier and the constraints the values this is allowed to encode into.

impl From<Aes128CcmCiphertext> for One28BitCcmCiphertext

fn from(item: Aes128CcmCiphertext) -> Self

Converts to this type from the input type.

impl From<One28BitCcmCiphertext> for Aes128CcmCiphertext

fn from(item: One28BitCcmCiphertext) -> Self

Converts to this type from the input type.

impl Hash for One28BitCcmCiphertext

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for One28BitCcmCiphertext

fn eq(&self, other: &One28BitCcmCiphertext) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for One28BitCcmCiphertext

impl StructuralPartialEq for One28BitCcmCiphertext