pub struct DateTime { /* private fields */ }
Available on crate feature pkcs8 only.
Expand description

Date-and-time type shared by multiple ASN.1 types (e.g. GeneralizedTime, UTCTime).

Following conventions from RFC 5280, this type is always Z-normalized (i.e. represents a UTC time). However, it isn’t named “UTC time” in order to prevent confusion with ASN.1 UTCTime.

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impl DateTime

pub const INFINITY: DateTime = _

This is the maximum date represented by the DateTime This corresponds to: 9999-12-31T23:59:59Z

pub fn new( year: u16, month: u8, day: u8, hour: u8, minutes: u8, seconds: u8 ) -> Result<DateTime, Error>

Create a new DateTime from the given UTC time components.

pub fn from_unix_duration(unix_duration: Duration) -> Result<DateTime, Error>

Compute a DateTime from the given Duration since the UNIX_EPOCH.

Returns None if the value is outside the supported date range.

pub fn year(&self) -> u16

Get the year.

pub fn month(&self) -> u8

Get the month.

pub fn day(&self) -> u8

Get the day.

pub fn hour(&self) -> u8

Get the hour.

pub fn minutes(&self) -> u8

Get the minutes.

pub fn seconds(&self) -> u8

Get the seconds.

pub fn unix_duration(&self) -> Duration

Compute Duration since UNIX_EPOCH from the given calendar date.

pub fn from_system_time(time: SystemTime) -> Result<DateTime, Error>

Available on crate feature std only.

Instantiate from SystemTime.

pub fn to_system_time(&self) -> SystemTime

Available on crate feature std only.

Convert to SystemTime.

Trait Implementations§

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impl Clone for DateTime

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fn clone(&self) -> DateTime

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DateTime

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'a> DecodeValue<'a> for DateTime

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fn decode_value<R>(reader: &mut R, header: Header) -> Result<DateTime, Error>
where R: Reader<'a>,

Attempt to decode this message using the provided Reader.
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impl Display for DateTime

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl EncodeValue for DateTime

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fn value_len(&self) -> Result<Length, Error>

Compute the length of this value (sans [Tag]+Length header) when encoded as ASN.1 DER.
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fn encode_value(&self, writer: &mut impl Writer) -> Result<(), Error>

Encode value (sans [Tag]+Length header) as ASN.1 DER using the provided Writer.
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fn header(&self) -> Result<Header, Error>
where Self: Tagged,

Get the Header used to encode this value.
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impl FixedTag for DateTime

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const TAG: Tag = Tag::GeneralizedTime

ASN.1 tag
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impl From<&DateTime> for GeneralizedTime

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fn from(datetime: &DateTime) -> GeneralizedTime

Converts to this type from the input type.
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impl From<&GeneralizedTime> for DateTime

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fn from(utc_time: &GeneralizedTime) -> DateTime

Converts to this type from the input type.
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impl From<&UtcTime> for DateTime

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fn from(utc_time: &UtcTime) -> DateTime

Converts to this type from the input type.
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impl From<DateTime> for GeneralizedTime

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fn from(datetime: DateTime) -> GeneralizedTime

Converts to this type from the input type.
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impl From<GeneralizedTime> for DateTime

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fn from(utc_time: GeneralizedTime) -> DateTime

Converts to this type from the input type.
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impl From<UtcTime> for DateTime

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fn from(utc_time: UtcTime) -> DateTime

Converts to this type from the input type.
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impl FromStr for DateTime

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type Err = Error

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<DateTime, Error>

Parses a string s to return a value of this type. Read more
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impl Ord for DateTime

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fn cmp(&self, other: &DateTime) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for DateTime

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fn eq(&self, other: &DateTime) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for DateTime

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fn partial_cmp(&self, other: &DateTime) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl TryFrom<&DateTime> for UtcTime

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(datetime: &DateTime) -> Result<UtcTime, Error>

Performs the conversion.
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impl TryFrom<&SystemTime> for DateTime

Available on crate feature std only.
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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(time: &SystemTime) -> Result<DateTime, Error>

Performs the conversion.
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impl TryFrom<DateTime> for UtcTime

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(datetime: DateTime) -> Result<UtcTime, Error>

Performs the conversion.
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impl TryFrom<SystemTime> for DateTime

Available on crate feature std only.
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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(time: SystemTime) -> Result<DateTime, Error>

Performs the conversion.
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impl Copy for DateTime

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impl Eq for DateTime

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impl StructuralPartialEq for DateTime

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<'a, T> Choice<'a> for T
where T: Decode<'a> + FixedTag,

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fn can_decode(tag: Tag) -> bool

Is the provided Tag decodable as a variant of this CHOICE?
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impl<'a, T> Decode<'a> for T
where T: DecodeValue<'a> + FixedTag,

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fn decode<R>(reader: &mut R) -> Result<T, Error>
where R: Reader<'a>,

Attempt to decode this message using the provided decoder.
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fn from_der(bytes: &'a [u8]) -> Result<Self, Error>

Parse Self from the provided DER-encoded byte slice.
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impl<T> DerOrd for T

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fn der_cmp(&self, other: &T) -> Result<Ordering, Error>

Return an Ordering between self and other when serialized as ASN.1 DER.
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impl<T> Encode for T
where T: EncodeValue + Tagged,

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fn encoded_len(&self) -> Result<Length, Error>

Compute the length of this value in bytes when encoded as ASN.1 DER.

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fn encode(&self, writer: &mut impl Writer) -> Result<(), Error>

Encode this value as ASN.1 DER using the provided Writer.

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fn encode_to_slice<'a>(&self, buf: &'a mut [u8]) -> Result<&'a [u8], Error>

Encode this value to the provided byte slice, returning a sub-slice containing the encoded message.
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fn encode_to_vec(&self, buf: &mut Vec<u8>) -> Result<Length, Error>

Available on crate feature alloc only.
Encode this message as ASN.1 DER, appending it to the provided byte vector.
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fn to_der(&self) -> Result<Vec<u8>, Error>

Available on crate feature alloc only.
Encode this type as DER, returning a byte vector.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> Tagged for T
where T: FixedTag,

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fn tag(&self) -> Tag

Get the ASN.1 tag that this type is encoded with.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> ValueOrd for T
where T: OrdIsValueOrd,

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fn value_cmp(&self, other: &T) -> Result<Ordering, Error>

Return an Ordering between value portion of TLV-encoded self and other when serialized as ASN.1 DER.
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impl<T> DecodeOwned for T
where T: for<'a> Decode<'a>,