CryptoASym

This is only a wrapper layer to abstract the different Crypto ASymmetric implementations. With this wrapper it is possible to support more than one ASymmetric implementation in parallel, by adapting this wrapper. More...

Collaboration diagram for CryptoASym:

Modules
	Examples
	ASymmetric Crypto Examples.
	Component : mbedTLS
	mBedTLS Sub-Component ASymmetric Cryptography library.
	Component : Stub
	Stub Sub-Component ASymmetric Cryptography library.
	ErrorCodes
	These component implement the Crypto ASymmetric custom Error codes.
	Common Definitions
	These are common definitions for most of the Crypto commands.
	Commands_Hash
	Describes about the ASymmetric Crypto's Hash related commands.
	Commands_ECC
	Describes about the ASymmetric Crypto's ECC related commands.
	Commands_Utility
	Describes about the CryptoASym Utility functions.

Detailed Description

This is only a wrapper layer to abstract the different Crypto ASymmetric implementations. With this wrapper it is possible to support more than one ASymmetric implementation in parallel, by adapting this wrapper.

Important hints for users of this component:

• Before use of any function, the dedicated crypto implementation has to be initialized using either of the interfaces mentioned below.
  • mBedTLS Initialization
  • Stub Initialization
• Functions using a KeyStore (Load ECC Key) are only available if KeyStore component has been passed during component initialization.
• If return value is Internal Error, means error has occurred in the dependent ASymmetric crypto library. Call GetLastStatus to know about the error details.
• Public Key can alone be loaded separately. But if Private Key is loaded, then its must to load PublicKey. If public key is not loaded after PrivateKey, then while Exporting Private key, error will be observed.
• While computing SharedSecret, its must to have a key-pair available using one of the below mentioned interfaces,
  • Generate ECC KeyPair
  • Load ECC Key
  • Load ECC Direct Key