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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 Octet Encoding Rules (OER) were designed to be easy to implement and to produce encodings more compact than those produced by the Basic Encoding Rules (BER). In addition to reducing the effort of developing encoder/decoders, the use of OER can decrease bandwidth utilization (though not as much as the Packed Encoding Rules), save CPU cycles ...
ASN.1 encoding rules and transfer syntaxes (BER, PER) — Low-level encoding of requests, responses and exception indicators suitable for physical transfer over the medium Note: The analogy between IOS and an SQL table is not quite correct. SQL permits only one instance of a table of given type (OPERATION in the example below), while ASN.1 ...
The Encoding Control Notation (ECN) is a standardized formal language that is part of the Abstract Syntax Notation One (ASN.1) family of international standards. [1] ECN is designed to be used along with ASN.1, and each ECN specification (a coherent set of encoding definitions) is explicitly related to a particular ASN.1 specification (a coherent set of type definitions).
OSI had two major components: an abstract model of networking, called the Basic Reference Model or seven-layer model, and a set of specific protocols. The OSI reference model was a major advance in the standardisation of network concepts. It promoted the idea of a consistent model of protocol layers, defining interoperability between network ...
Base64 encoding can be helpful when fairly lengthy identifying information is used in an HTTP environment. For example, a database persistence framework for Java objects might use Base64 encoding to encode a relatively large unique id (generally 128-bit UUIDs) into a string for use as an HTTP parameter in HTTP forms or HTTP GET URLs. Also, many ...
There are four kinds of encoding for the Length field: 1-byte, 2-byte, 4-byte and Basic Encoding Rules (BER). The 1-, 2-, and 4-byte variants are pretty straightforward: make an unsigned integer out of the bytes, and that integer is the number of bytes that follow. BER length encoding is a bit more complicated but the most flexible.
ASN.1 provides a set of formal rules for describing the structure of objects that are independent of machine-specific encoding techniques. ASN.1 objects are converted into binary data streams using Medical Device Encoding Rules (MDER) which is a subset of Basic Encoding Rules (BER). The use of MDER allows agents to store predefined transmission ...