Struct EcSigner 

pub struct EcSigner<C, Ctx>
where
    C: PrimeCurve + CurveArithmetic,
{ /* private fields */ }

EcSigner will sign a payload with an elliptic curve secret key stored on the TPM.

Parameters

Parameter C describes the curve that is of use (Nist P-256, Nist P-384, …)

use p256::NistP256;
use signature::Signer;

let key_params = EcSigner::<NistP256, ()>::key_params_default();
let (tpm_km, _tpm_auth) = context
    .create_key(key_params, 0)
    .expect("Failed to create a private keypair");

let signer = EcSigner::<NistP256,_>::new((Mutex::new(&mut context), tpm_km, key_params, None))
     .expect("Failed to create a signer");
let signature: p256::ecdsa::Signature = signer.sign(b"Hello Bob, Alice here.");

Implementations

impl<C, Ctx> EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic + AssociatedTpmCurve, FieldBytesSize<C>: ModulusSize, AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>, Ctx: TpmSigner,

pub fn new(context: Ctx) -> Result<Self, Error>

impl<C, Ctx> EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic + AssociatedTpmCurve,

pub fn key_params_default() -> KeyParams

where C: DigestPrimitive, <C as DigestPrimitive>::Digest: FixedOutput<OutputSize = FieldBytesSize<C>> + AssociatedHashingAlgorithm,

Key parameters for this curve, selected digest is the one selected by DigestPrimitive

pub fn key_params<D>() -> KeyParams

where D: FixedOutput<OutputSize = FieldBytesSize<C>> + AssociatedHashingAlgorithm,

Key parameters for this curve

Parameters

The hashing algorithm D is the digest that will be used for signatures (SHA-256, SHA3-256, …).

Trait Implementations

impl<C, Ctx> AsRef<VerifyingKey<C>> for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic, Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + SignPrimitive<C>, SignatureSize<C>: ArrayLength<u8>,

fn as_ref(&self) -> &VerifyingKey<C>

Converts this type into a shared reference of the (usually inferred) input type.

impl<C, Ctx: Debug> Debug for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic + Debug,

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

Formats the value using the given formatter.

impl<C, Ctx, D> DigestSigner<D, Signature<C>> for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic + AssociatedTpmCurve, D: Digest + FixedOutput<OutputSize = FieldBytesSize<C>> + AssociatedHashingAlgorithm, Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + SignPrimitive<C>, SignatureSize<C>: ArrayLength<u8>, Digest: From<Output<D>>, Ctx: TpmSigner,

fn try_sign_digest(&self, digest: D) -> Result<Signature<C>, SigError>

Attempt to sign the given prehashed message Digest, returning a digital signature on success, or an error if something went wrong.

fn sign_digest(&self, digest: D) -> S

Sign the given prehashed message Digest, returning a signature.

impl<C, Ctx, D> DigestSigner<D, Signature<C>> for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic + AssociatedTpmCurve, D: Digest + FixedOutput<OutputSize = FieldBytesSize<C>> + AssociatedHashingAlgorithm, Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + SignPrimitive<C>, SignatureSize<C>: ArrayLength<u8>, Digest: From<Output<D>>, MaxSize<C>: ArrayLength<u8>, <FieldBytesSize<C> as Add>::Output: Add<MaxOverhead> + ArrayLength<u8>, Ctx: TpmSigner,

fn try_sign_digest(&self, digest: D) -> Result<DerSignature<C>, SigError>

Attempt to sign the given prehashed message Digest, returning a digital signature on success, or an error if something went wrong.

fn sign_digest(&self, digest: D) -> S

Sign the given prehashed message Digest, returning a signature.

impl<C, Ctx> KeypairRef for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic, Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + SignPrimitive<C>, SignatureSize<C>: ArrayLength<u8>,

type VerifyingKey = VerifyingKey<C>

Verifying key type for this keypair.

impl<C, Ctx> SignatureAlgorithmIdentifier for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic, Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + SignPrimitive<C>, SignatureSize<C>: ArrayLength<u8>, Signature<C>: AssociatedAlgorithmIdentifier<Params = AnyRef<'static>>,

const SIGNATURE_ALGORITHM_IDENTIFIER: AlgorithmIdentifier<Self::Params> = Signature<C>::ALGORITHM_IDENTIFIER

AlgorithmIdentifier for the corresponding singature system.

type Params = AnyRef<'static>

Algorithm parameters.

impl<C, Ctx> Signer<Signature<C>> for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic + DigestPrimitive + AssociatedTpmCurve, <C as DigestPrimitive>::Digest: AssociatedHashingAlgorithm, Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + SignPrimitive<C>, SignatureSize<C>: ArrayLength<u8>, Digest: From<Output<<C as DigestPrimitive>::Digest>>, Ctx: TpmSigner,

fn try_sign(&self, msg: &[u8]) -> Result<Signature<C>, SigError>

Attempt to sign the given message, returning a digital signature on success, or an error if something went wrong.

fn sign(&self, msg: &[u8]) -> S

Sign the given message and return a digital signature

impl<C, Ctx> Signer<Signature<C>> for EcSigner<C, Ctx>

where C: PrimeCurve + CurveArithmetic + DigestPrimitive + AssociatedTpmCurve, <C as DigestPrimitive>::Digest: AssociatedHashingAlgorithm, Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + SignPrimitive<C>, SignatureSize<C>: ArrayLength<u8>, Digest: From<Output<<C as DigestPrimitive>::Digest>>, MaxSize<C>: ArrayLength<u8>, <FieldBytesSize<C> as Add>::Output: Add<MaxOverhead> + ArrayLength<u8>, Ctx: TpmSigner,

fn try_sign(&self, msg: &[u8]) -> Result<DerSignature<C>, SigError>

Attempt to sign the given message, returning a digital signature on success, or an error if something went wrong.

fn sign(&self, msg: &[u8]) -> S

Sign the given message and return a digital signature