Struct EncryptedMessage

pub struct EncryptedMessage<'a> { /* private fields */ }

A parsed RLPx encrypted message

From the devp2p spec, this should help perform the following operations:

For Bob to decrypt the message R || iv || c || d, he derives the shared secret S = Px where (Px, Py) = kB * R as well as the encryption and authentication keys kE || kM = KDF(S, 32).

Bob verifies the authenticity of the message by checking whether d == MAC(sha256(kM), iv || c) then obtains the plaintext as m = AES(kE, iv || c).

Implementations

impl<'a> EncryptedMessage<'a>

pub fn parse(data: &mut [u8]) -> Result<EncryptedMessage<'_>, ECIESError>

Parse the given data into an EncryptedMessage.

If the data is not long enough to contain the expected fields, this returns an error.

pub fn derive_keys(&self, secret_key: &SecretKey) -> RLPxSymmetricKeys

Use the given secret and this encrypted message to derive the shared secret, and use the shared secret to derive the mac and encryption keys.

pub fn check_integrity( &self, keys: &RLPxSymmetricKeys, ) -> Result<(), ECIESError>

Use the given ECIES keys to check the message integrity using the contained tag.

pub fn decrypt(self, keys: &RLPxSymmetricKeys) -> &'a mut [u8]

Use the given ECIES keys to decrypt the contained encrypted data, consuming the message and returning the decrypted data.

pub fn check_and_decrypt( self, keys: RLPxSymmetricKeys, ) -> Result<&'a mut [u8], ECIESError>

Use the given ECIES keys to check the integrity of the message, returning an error if the tag check fails, and then decrypt the message, returning the decrypted data.

Trait Implementations

impl<'a> Debug for EncryptedMessage<'a>

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

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 136 bytes