Struct Asn1TagLeadMask 

pub struct Asn1TagLeadMask {
    pub universal: u64,
    pub application: u64,
    pub context_specific: u64,
    pub private: u64,
}

The 256 possible ASN.1 identifier leading octets, split into one 64-bit word per class.

Within each word, bits 0..31 represent primitive identifiers and bits 32..63 represent constructed identifiers. For tag numbers 0..30, the low five bits identify the exact tag. Bit 31 in either half is deliberately conservative: it represents every high-tag-number form (number >= 31) having that class and constructed bit. Consequently this common-path certificate cannot prove two different high tag numbers disjoint when they otherwise share their first identifier octet.

Fields

universal: u64

application: u64

context_specific: u64

private: u64