Struct der::asn1::UtcTime

pub struct UtcTime(/* private fields */);

ASN.1 UTCTime type.

This type implements the validity requirements specified in RFC 5280 Section 4.1.2.5.1, namely:

For the purposes of this profile, UTCTime values MUST be expressed in Greenwich Mean Time (Zulu) and MUST include seconds (i.e., times are YYMMDDHHMMSSZ), even where the number of seconds is zero. Conforming systems MUST interpret the year field (YY) as follows:

• Where YY is greater than or equal to 50, the year SHALL be interpreted as 19YY; and
• Where YY is less than 50, the year SHALL be interpreted as 20YY.

Note: Due to common operations working on UNIX_EPOCH UtcTimes are only supported for the years 1970-2049.

Implementations

impl UtcTime

pub const LENGTH: usize = 13usize

Length of an RFC 5280-flavored ASN.1 DER-encoded UtcTime.

pub const MAX_YEAR: u16 = 2_049u16

Maximum year that can be represented as a UTCTime.

pub fn from_date_time(datetime: DateTime) -> Result<Self>

Create a UtcTime from a DateTime.

pub fn to_date_time(&self) -> DateTime

Convert this UtcTime into a DateTime.

pub fn from_unix_duration(unix_duration: Duration) -> Result<Self>

Create a new UtcTime given a Duration since UNIX_EPOCH (a.k.a. “Unix time”)

pub fn to_unix_duration(&self) -> Duration

Get the duration of this timestamp since UNIX_EPOCH.

pub fn from_system_time(time: SystemTime) -> Result<Self>

Instantiate from SystemTime.

pub fn to_system_time(&self) -> SystemTime

Convert to SystemTime.

Trait Implementations

impl Clone for UtcTime

fn clone(&self) -> UtcTime

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UtcTime

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

Formats the value using the given formatter.

impl<'a> DecodeValue<'a> for UtcTime

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

Attempt to decode this message using the provided Reader.

impl EncodeValue for UtcTime

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

Compute the length of this value (sans Tag+Length header) when encoded as ASN.1 DER.

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

Encode value (sans Tag+Length header) as ASN.1 DER using the provided Writer.

fn header(&self) -> Result<Header>

where Self: Tagged,

Get the Header used to encode this value.

impl FixedTag for UtcTime

const TAG: Tag = Tag::UtcTime

ASN.1 tag

impl From<&UtcTime> for DateTime

fn from(utc_time: &UtcTime) -> DateTime

Converts to this type from the input type.

impl From<&UtcTime> for UtcTime

fn from(value: &UtcTime) -> UtcTime

Converts to this type from the input type.

impl From<UtcTime> for DateTime

fn from(utc_time: UtcTime) -> DateTime

Converts to this type from the input type.

impl From<UtcTime> for SystemTime

fn from(utc_time: UtcTime) -> SystemTime

Converts to this type from the input type.

impl Ord for UtcTime

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for UtcTime

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl PartialOrd for UtcTime

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

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'__der> TryFrom<&'__der Any> for UtcTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(any: &'__der Any) -> Result<UtcTime>

Performs the conversion.

impl TryFrom<&DateTime> for UtcTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(datetime: &DateTime) -> Result<Self>

Performs the conversion.

impl<'__der> TryFrom<AnyRef<'__der>> for UtcTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(any: AnyRef<'__der>) -> Result<UtcTime>

Performs the conversion.

impl TryFrom<DateTime> for UtcTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(datetime: DateTime) -> Result<Self>

Performs the conversion.

impl Copy for UtcTime

impl Eq for UtcTime

impl StructuralPartialEq for UtcTime