Crate flexiber

flexiber

Implementation of the BER-TLV serialization format from ISO 7816-4:2005.

ITU-T X.690 (08/2015) defines the BER, CER and DER encoding rules for ASN.1

The exact same document is ISO/IET 8825-1, which is freely available, inconveniently packed as a single PDF in a ZIP file :)

Credits

This library is a remix of RustCrypto/utils/der.

The core idea taken from der is to have Encodable require an encoded_length method. By calling this recursively in a first pass, allocations required in other approaches are avoided.

Macros

debug

Local version of debug!.

debug_now

Immediate version of debug!.

error

Local version of error!.

error_now

Immediate version of error!.

info

Local version of info!.

info_now

Immediate version of info!.

log

Local version of log!.

log_now

Immediate version of log!.

trace

Local version of trace!.

trace_now

Immediate version of trace!.

try_debug

Fallible version of debug!.

try_debug_now

Fallible immediate version of debug!.

try_error

Fallible version of error!.

try_error_now

Fallible immediate version of error!.

try_info

Fallible version of info!.

try_info_now

Fallible immediate version of info!.

try_log_now

Fallible immediate version of log!.

try_trace

Fallible version of trace!.

try_trace_now

Fallible immediate version of trace!.

try_warn

Fallible version of warn!.

try_warn_now

Fallible immediate version of warn!.

warn

Local version of warn!.

warn_now

Immediate version of warn!.

Structs

Decoder

BER-TLV decoder.

Encoder

BER-TLV encoder.

Error

Error type.

Length

BER-TLV-encoded length.

SimpleTag

These are tags like in SIMPLE-TLV.

Slice

Slice of at most Length::max() bytes.

Tag

The tag field consists of a single byte encoding a tag number from 1 to 254. The values ‘00’ and ‘FF’ are invalid.

TaggedValue

BER-TLV data object.

Enums

Class

Class of BER tag.

ErrorKind

Error type.

Traits

Container

Multiple encodables in a container.

Decodable

Decoding trait.

Encodable

Encoding trait.

TagLike

This is the common trait that types to be used as tags are supposed to implement.

Tagged

Types with an associated BER-TLV Tag.

Type Definitions

Result

Result type.

TaggedSlice

Raw BER-TLV data object TaggedValue<Slice<'_>>.