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Cryptosystem.go
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Cryptosystem.go
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package types
import (
"github.com/jcmturner/gofork/encoding/asn1"
)
// Reference: https://www.ietf.org/rfc/rfc4120.txt
// Section: 5.2.9
// EncryptedData implements RFC 4120 type: https://tools.ietf.org/html/rfc4120#section-5.2.9
type EncryptedData struct {
EType int32 `asn1:"explicit,tag:0"`
KVNO int `asn1:"explicit,optional,tag:1"`
Cipher []byte `asn1:"explicit,tag:2"`
}
// EncryptionKey implements RFC 4120 type: https://tools.ietf.org/html/rfc4120#section-5.2.9
// AKA KeyBlock
type EncryptionKey struct {
KeyType int32 `asn1:"explicit,tag:0"`
KeyValue []byte `asn1:"explicit,tag:1"`
}
// Checksum implements RFC 4120 type: https://tools.ietf.org/html/rfc4120#section-5.2.9
type Checksum struct {
CksumType int32 `asn1:"explicit,tag:0"`
Checksum []byte `asn1:"explicit,tag:1"`
}
// Unmarshal bytes into the EncryptedData.
func (a *EncryptedData) Unmarshal(b []byte) error {
_, err := asn1.Unmarshal(b, a)
return err
}
// Marshal the EncryptedData.
func (a *EncryptedData) Marshal() ([]byte, error) {
edb, err := asn1.Marshal(*a)
if err != nil {
return edb, err
}
return edb, nil
}
// Unmarshal bytes into the EncryptionKey.
func (a *EncryptionKey) Unmarshal(b []byte) error {
_, err := asn1.Unmarshal(b, a)
return err
}
// Unmarshal bytes into the Checksum.
func (a *Checksum) Unmarshal(b []byte) error {
_, err := asn1.Unmarshal(b, a)
return err
}