# identities.go

定义了 identity 和 signingidentity 私有结构。

```go
type identity struct {
    // id contains the identifier (MSPID and identity identifier) for this instance
    id *IdentityIdentifier

    // cert contains the x.509 certificate that signs the public key of this instance
    cert *x509.Certificate

    // this is the public key of this instance
    pk bccsp.Key

    // reference to the MSP that "owns" this identity
    msp *bccspmsp
}

type signingidentity struct {
    // we embed everything from a base identity
    identity

    // signer corresponds to the object that can produce signatures from this identity
    signer *signer.CryptoSigner
}
```
