Crypto++ 8.9 Free C++ class library of cryptographic schemes

Static Public Member Functions | List of all members
ECIES_P1363< EC, HASH, COFACTOR_OPTION > Struct Template Reference

Elliptic Curve Integrated Encryption Scheme for P1363. More...

Inheritance diagram for ECIES_P1363< EC, HASH, COFACTOR_OPTION >:

## Static Public Member Functions
static const char * | StaticAlgorithmName ()

## Additional Inherited Members
Public Types inherited from DL_ES< DL_Keys_EC< EC >, DL_KeyAgreementAlgorithm_DH< EC::Point, NoCofactorMultiplication >, DL_KeyDerivationAlgorithm_P1363< EC::Point, false, P1363_KDF2< SHA1 > >, DL_EncryptionAlgorithm_Xor< HMAC< SHA1 >, false, true >, ECIES< EC > >
typedef PK_FinalTemplate< DL_DecryptorImpl< SchemeOptions > > | Decryptor
| implements PK_Decryptor interface
typedef PK_FinalTemplate< DL_EncryptorImpl< SchemeOptions > > | Encryptor
| implements PK_Encryptor interface
Public Types inherited from DL_Keys_EC< EC >
typedef DL_PublicKey_EC< EC > | PublicKey
typedef DL_PrivateKey_EC< EC > | PrivateKey

## Detailed Description

### template<class EC, class HASH = SHA1, class COFACTOR_OPTION = NoCofactorMultiplication>
struct ECIES_P1363< EC, HASH, COFACTOR_OPTION >

Elliptic Curve Integrated Encryption Scheme for P1363.

Template Parameters

  COFACTOR_OPTION | cofactor multiplication option
  HASH | HashTransformation derived class used for key derivation and MAC computation

ECIES_P1363 is an Elliptic Curve based Integrated Encryption Scheme (IES) for P1363. The scheme combines a Key Encapsulation Method (KEM) with a Data Encapsulation Method (DEM) and a MAC tag. The scheme is IND-CCA2, which is a strong notion of security. You should prefer an Integrated Encryption Scheme over homegrown schemes.

The library's original implementation is based on an early P1363 draft, which itself appears to be based on an early Certicom SEC-1 draft (or an early SEC-1 draft was based on a P1363 draft). Crypto++ 4.2 used the early draft in its Integrated Enryption Schemes with `NoCofactorMultiplication`, `DHAES_MODE=false` and `LABEL_OCTETS=true`.

If you desire an Integrated Encryption Scheme with Crypto++ 4.2 compatibility, then use the ECIES_P1363. If you desire an Integrated Encryption Scheme compatible with Bouncy Castle 1.54 and Botan 1.11 compatibility, then use the ECIES template class with `NoCofactorMultiplication`, `DHAES_MODE=true` and `LABEL_OCTETS=false`.

The default template parameters ensure compatibility with P1363. The combination of `IncompatibleCofactorMultiplication` and `DHAES_MODE=true` is recommended for best efficiency and security. SHA1 is used for compatibility reasons, but it can be changed if desired.

See also
  DLIES, ECIES, Elliptic Curve Integrated Encryption Scheme (ECIES), Martínez, Encinas, and Ávila's A Survey of the Elliptic Curve Integrated Encryption Schemes

Since
  Crypto++ 4.0

Definition at line 641 of file eccrypto.h.

The documentation for this struct was generated from the following file:

- eccrypto.h