devela::_dep::orion::hazardous::kem::x25519_hkdf_sha256

Struct DhKem

pub struct DhKem {}
Available on crate feature dep_orion only.
Expand description

DHKEM(X25519, HKDF-SHA256) as specified in HPKE RFC 9180.

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impl DhKem

pub const KEM_ID: u16 = 32u16

ID for this DH-KEM. See https://www.rfc-editor.org/rfc/rfc9180.html#section-7.1

pub const HPKE_VERSION_ID: &'static str = "HPKE-v1"

Version of HPKE implemented. See https://www.rfc-editor.org/rfc/rfc9180.html#section-4-10.

pub fn generate_keypair() -> Result<(PrivateKey, PublicKey), UnknownCryptoError> ⓘ

Generate random X25519 keypair.

pub fn derive_keypair( ikm: &[u8], ) -> Result<(PrivateKey, PublicKey), UnknownCryptoError> ⓘ

Deterministically derive a X25519 keypair from ikm.

pub fn encap( public_recipient: &PublicKey, ) -> Result<(SharedSecret, PublicKey), UnknownCryptoError> ⓘ

Derive ephemeral shared secret and encapsulation thereof, which can be decapsulated by the holder of public_recipient.

pub fn encap_deterministic( public_recipient: &PublicKey, secret_ephemeral: PrivateKey, ) -> Result<(SharedSecret, PublicKey), UnknownCryptoError> ⓘ

Equivalent to Self::encap(), but with a one-time use provided ephemeral private key.

pub fn decap( public_ephemeral: &PublicKey, secret_recipient: &PrivateKey, ) -> Result<SharedSecret, UnknownCryptoError> ⓘ

Decapsulate public_ephemeral and return the shared ephemeral secret, using secret_recipient private key.

pub fn auth_encap( public_recipient: &PublicKey, secret_sender: &PrivateKey, ) -> Result<(SharedSecret, PublicKey), UnknownCryptoError> ⓘ

Equivalent to Self::encap(), additionally ensuring the holder of secret_sender was the one to generate the shared secret.

pub fn auth_encap_deterministic( public_recipient: &PublicKey, secret_sender: &PrivateKey, secret_ephemeral: PrivateKey, ) -> Result<(SharedSecret, PublicKey), UnknownCryptoError> ⓘ

Equivalent to Self::auth_encap(), but with a one-time use provided ephemeral private key.

pub fn auth_decap( public_ephemeral: &PublicKey, secret_recipient: &PrivateKey, public_sender: &PublicKey, ) -> Result<SharedSecret, UnknownCryptoError> ⓘ

Equivalent to Self::decap(), additionally ensuring the holder of secret_sender was the one to generate the shared secret.

Auto Trait Implementations§

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impl Freeze for DhKem

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impl RefUnwindSafe for DhKem

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impl Send for DhKem

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impl Sync for DhKem

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impl Unpin for DhKem

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impl UnwindSafe for DhKem

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