ParseUtcTime()

static DateTimeOffset System.Formats.Asn1.AsnDecoder.ParseUtcTime ( ReadOnlySpan< byte > contentOctets, AsnEncodingRules ruleSet, int twoDigitYearMax )

inlinestaticprivate

Definition at line 1814 of file AsnDecoder.cs.

    {
        if ((ruleSet == AsnEncodingRules.DER || ruleSet == AsnEncodingRules.CER) && contentOctets.Length != 13)
        {
            throw new AsnContentException(System.SR.ContentException_InvalidUnderCerOrDer_TryBer);
        }
        if (contentOctets.Length < 11 || contentOctets.Length > 17 || (contentOctets.Length & 1) != 1)
        {
            throw new AsnContentException();
        }
        ReadOnlySpan<byte> data = contentOctets;
        int num = ParseNonNegativeIntAndSlice(ref data, 2);
        int month = ParseNonNegativeIntAndSlice(ref data, 2);
        int day = ParseNonNegativeIntAndSlice(ref data, 2);
        int hour = ParseNonNegativeIntAndSlice(ref data, 2);
        int minute = ParseNonNegativeIntAndSlice(ref data, 2);
        int second = 0;
        int hours = 0;
        int num2 = 0;
        bool flag = false;
        if (contentOctets.Length == 17 || contentOctets.Length == 13)
        {
            second = ParseNonNegativeIntAndSlice(ref data, 2);
        }
        if (contentOctets.Length == 11 || contentOctets.Length == 13)
        {
            if (data[0] != 90)
            {
                throw new AsnContentException();
            }
        }
        else
        {
            if (data[0] == 45)
            {
                flag = true;
            }
            else if (data[0] != 43)
            {
                throw new AsnContentException();
            }
            data = data.Slice(1);
            hours = ParseNonNegativeIntAndSlice(ref data, 2);
            num2 = ParseNonNegativeIntAndSlice(ref data, 2);
        }
        if (num2 > 59)
        {
            throw new AsnContentException();
        }
        TimeSpan timeSpan = new TimeSpan(hours, num2, 0);
        if (flag)
        {
            timeSpan = -timeSpan;
        }
        int num3 = twoDigitYearMax / 100;
        if (num > twoDigitYearMax % 100)
        {
            num3--;
        }
        int year = num3 * 100 + num;
        try
        {
            return new DateTimeOffset(year, month, day, hour, minute, second, timeSpan);
        }
        catch (Exception inner)
        {
            throw new AsnContentException(System.SR.ContentException_DefaultMessage, inner);
        }
    }

References System.SR.ContentException_DefaultMessage, System.SR.ContentException_InvalidUnderCerOrDer_TryBer, System.Formats.Asn1.AsnDecoder.ParseNonNegativeIntAndSlice(), and System.year.

Referenced by System.Formats.Asn1.AsnDecoder.ReadUtcTime().