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package storageops
import "crypto/elliptic"
const (
minRSASize = 2048
defaultRSASize = 2048
maxRSASize = 4096
)
func clampRSAKeySize(sz int) int {
if sz == 0 {
return defaultRSASize
}
if sz < minRSASize {
return minRSASize
}
if sz > maxRSASize {
return maxRSASize
}
return sz
}
const defaultCurve = "nistp256"
// Make sure the curve name is valid and use a default curve name. "clamp" is
// not the sanest name here but is consistent with clampRSAKeySize.
func clampECDSACurve(curveName string) string {
switch curveName {
case "nistp256", "nistp384", "nistp521":
return curveName
default:
return defaultCurve
}
}
func getECDSACurve(curveName string) elliptic.Curve {
switch clampECDSACurve(curveName) {
case "nistp256":
return elliptic.P256()
case "nistp384":
return elliptic.P384()
case "nistp521":
return elliptic.P521()
default:
return nil
}
}
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