Distinguished Encoding Rules in the context of ITU-T

Distinguished Encoding Rules in the context of ITU-T

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⭐ Core Definition: Distinguished Encoding Rules

X.690 is an ITU-T standard specifying several ASN.1 encoding formats:

Basic Encoding Rules (BER)
Canonical Encoding Rules (CER)
Distinguished Encoding Rules (DER)

The Basic Encoding Rules (BER) were the original rules laid out by the ASN.1 standard for encoding data into a binary format. The rules, collectively referred to as a transfer syntax in ASN.1 parlance, specify the exact octets (8-bit bytes) used to encode data.

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⭐ Core Definition: Distinguished Encoding Rules
Distinguished Encoding Rules in the context of Digital container format

Distinguished Encoding Rules in the context of Digital container format

A container format (informally, sometimes called a wrapper) or metafile is a file format that allows multiple data streams to be embedded into a single file, usually along with metadata for identifying and further detailing those streams. Notable examples of container formats include archive files (such as the ZIP format) and formats used for multimedia playback (such as Matroska, MP4, and AVI). Among the earliest cross-platform container formats were Distinguished Encoding Rules and the 1985 Interchange File Format.

View the full Wikipedia page for Digital container format

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