View Source X509.Certificate.Validity (X509 v0.8.5)

Convenience functions for creating :Validity records for use in certificates. The :Validity record represents the X.509 Validity type, defining the validity of a certificate in terms of notBefore and notAfter timestamps.

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Types

t()

:Validity record, as used in Erlang's :public_key module

X.509 Time type (UTCTime or GeneralizedTime)

Functions

Creates a new :Validity record with an notAfter value a given number of days in the future. The notBefore value can be backdated (by default 300 seconds) to avoid newly issued certificates from being rejected by peers due to poorly synchronized clocks.

Creates a new :Validity record with the given start and end timestamps in DateTime format.

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Specs

t() :: X509.ASN1.record(:validity)

:Validity record, as used in Erlang's :public_key module

Specs

time() :: {:utcTime | :generalTime, charlist()}

X.509 Time type (UTCTime or GeneralizedTime)

Link to this section Functions

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days_from_now(days, backdate_seconds \\ 300)

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Specs

days_from_now(integer(), non_neg_integer()) :: t()

Creates a new :Validity record with an notAfter value a given number of days in the future. The notBefore value can be backdated (by default 300 seconds) to avoid newly issued certificates from being rejected by peers due to poorly synchronized clocks.

For CA certificates, consider using new/2 instead, with a not_before value that does not reveal the exact time when the keypair was generated. This minimizes information leakage about the state of the RNG.

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new(not_before, not_after)

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Specs

new(DateTime.t(), DateTime.t()) :: t()

Creates a new :Validity record with the given start and end timestamps in DateTime format.

examples

Examples:

iex> {:ok, not_before, 0} = DateTime.from_iso8601("2018-01-01T00:00:00Z")
iex> {:ok, not_after, 0} = DateTime.from_iso8601("2018-12-31T23:59:59Z")
iex> X509.Certificate.Validity.new(not_before, not_after)
{:Validity, {:utcTime, '180101000000Z'}, {:utcTime, '181231235959Z'}}

iex> {:ok, not_before, 0} = DateTime.from_iso8601("2051-01-01T00:00:00Z")
iex> {:ok, not_after, 0} = DateTime.from_iso8601("2051-12-31T23:59:59Z")
iex> X509.Certificate.Validity.new(not_before, not_after)
{:Validity, {:generalTime, '20510101000000Z'},
  {:generalTime, '20511231235959Z'}}