# `SBoM.CycloneDX.V17.CryptoProperties.CertificateExtensions.CommonExtensionName`
[🔗](https://github.com/erlef/mix_sbom/blob/v0.10.0/lib/sbom/cyclonedx/v17/crypto_properties/certificate_extensions/common_extension_name.pb.ex#L1)

Common extension names

# `t`

```elixir
@type t() ::
  integer()
  | :COMMON_EXTENSION_NAME_UNSPECIFIED
  | :COMMON_EXTENSION_NAME_BASIC_CONSTRAINTS
  | :COMMON_EXTENSION_NAME_KEY_USAGE
  | :COMMON_EXTENSION_NAME_EXTENDED_KEY_USAGE
  | :COMMON_EXTENSION_NAME_SUBJECT_ALTERNATIVE_NAME
  | :COMMON_EXTENSION_NAME_AUTHORITY_KEY_IDENTIFIER
  | :COMMON_EXTENSION_NAME_SUBJECT_KEY_IDENTIFIER
  | :COMMON_EXTENSION_NAME_AUTHORITY_INFORMATION_ACCESS
  | :COMMON_EXTENSION_NAME_CERTIFICATE_POLICIES
  | :COMMON_EXTENSION_NAME_CRL_DISTRIBUTION_POINTS
  | :COMMON_EXTENSION_NAME_SIGNED_CERTIFICATE_TIMESTAMP
```

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*Consult [api-reference.md](api-reference.md) for complete listing*