func extKeyUsageFromOID(oid asn1.ObjectIdentifier) (eku ExtKeyUsage, ok bool) { for _, pair := range extKeyUsageOIDs { if oid.Equal(pair.oid) { return pair.extKeyUsage, true } } return }
func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve { switch { case oid.Equal(oidNamedCurveP224): return elliptic.P224() case oid.Equal(oidNamedCurveP256): return elliptic.P256() case oid.Equal(oidNamedCurveP384): return elliptic.P384() case oid.Equal(oidNamedCurveP521): return elliptic.P521() } return nil }
func getPublicKeyAlgorithmFromOID(oid asn1.ObjectIdentifier) PublicKeyAlgorithm { switch { case oid.Equal(oidPublicKeyRSA): return RSA case oid.Equal(oidPublicKeyDSA): return DSA case oid.Equal(oidPublicKeyECDSA): return ECDSA } return UnknownPublicKeyAlgorithm }
func getSignatureAlgorithmFromOID(oid asn1.ObjectIdentifier) SignatureAlgorithm { switch { case oid.Equal(oidSignatureMD2WithRSA): return MD2WithRSA case oid.Equal(oidSignatureMD5WithRSA): return MD5WithRSA case oid.Equal(oidSignatureSHA1WithRSA): return SHA1WithRSA case oid.Equal(oidSignatureSHA256WithRSA): return SHA256WithRSA case oid.Equal(oidSignatureSHA384WithRSA): return SHA384WithRSA case oid.Equal(oidSignatureSHA512WithRSA): return SHA512WithRSA case oid.Equal(oidSignatureDSAWithSHA1): return DSAWithSHA1 case oid.Equal(oidSignatureDSAWithSHA256): return DSAWithSHA256 case oid.Equal(oidSignatureECDSAWithSHA1): return ECDSAWithSHA1 case oid.Equal(oidSignatureECDSAWithSHA256): return ECDSAWithSHA256 case oid.Equal(oidSignatureECDSAWithSHA384): return ECDSAWithSHA384 case oid.Equal(oidSignatureECDSAWithSHA512): return ECDSAWithSHA512 } return UnknownSignatureAlgorithm }