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ellipticCurve.go
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ellipticCurve.go
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package certificate
import (
"strings"
"gopkg.in/yaml.v3"
)
// EllipticCurve represents the types of supported elliptic curves
type EllipticCurve int
const (
// EllipticCurveNotSet represents a value not set
EllipticCurveNotSet EllipticCurve = iota
// EllipticCurveP521 represents the P521 curve
EllipticCurveP521
// EllipticCurveP256 represents the P256 curve
EllipticCurveP256
// EllipticCurveP384 represents the P384 curve
EllipticCurveP384
// EllipticCurveED25519 represents the ED25519 curve
EllipticCurveED25519
// EllipticCurveDefault represents the default curve value
EllipticCurveDefault = EllipticCurveP256
// String representations of the EllipticCurve types
strEccP256 = "P256"
strEccP384 = "P384"
strEccP521 = "P521"
strEccED25519 = "ED25519"
)
func (ec *EllipticCurve) String() string {
switch *ec {
case EllipticCurveP521:
return strEccP521
case EllipticCurveP384:
return strEccP384
case EllipticCurveP256:
return strEccP256
case EllipticCurveED25519:
return strEccED25519
default:
return ""
}
}
// Set EllipticCurve value via a string
func (ec *EllipticCurve) Set(value string) error {
switch strings.ToUpper(value) {
case strEccP521, "P-521":
*ec = EllipticCurveP521
case strEccP384, "P-384":
*ec = EllipticCurveP384
case strEccP256, "P-256":
*ec = EllipticCurveP256
case strEccED25519:
*ec = EllipticCurveED25519
default:
*ec = EllipticCurveDefault
}
return nil
}
func parseEllipticCurve(value string) EllipticCurve {
switch strings.ToUpper(value) {
case strEccP256, "P-256":
return EllipticCurveP256
case strEccP384, "P-384":
return EllipticCurveP384
case strEccP521, "P-521":
return EllipticCurveP521
case strEccED25519:
return EllipticCurveED25519
default:
return EllipticCurveDefault
}
}
// MarshalYAML customizes the behavior of ChainOption when being marshaled into a YAML document.
// The returned value is marshaled in place of the original value implementing Marshaller
func (ec EllipticCurve) MarshalYAML() (interface{}, error) {
return ec.String(), nil
}
// UnmarshalYAML customizes the behavior when being unmarshalled from a YAML document
func (ec *EllipticCurve) UnmarshalYAML(value *yaml.Node) error {
var strValue string
err := value.Decode(&strValue)
if err != nil {
return err
}
*ec = parseEllipticCurve(strValue)
return nil
}
func AllSupportedCurves() []EllipticCurve {
return []EllipticCurve{EllipticCurveP521, EllipticCurveP256, EllipticCurveP384, EllipticCurveED25519}
}