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JSON Web Token (JWT, suggested pronunciation / dʒ ɒ t /, same as the word "jot" [1]) is a proposed Internet standard for creating data with optional signature and/or optional encryption whose payload holds JSON that asserts some number of claims.
CBOR encoded data is seen as a stream of data items. Each data item consists of a header byte containing a 3-bit type and 5-bit short count. This is followed by an optional extended count (if the short count is in the range 24–27), and an optional payload. For types 0, 1, and 7, there is no payload; the count is the value. For types 2 (byte ...
Field name Index (Bytes) Purpose Start-of-frame: 0: Denotes the start of frame transmission (v1.0: 0xFE) Payload-length: 1: length of payload (n) Packet sequence: 2: Each component counts up their send sequence. Allows for detection of packet loss. System ID: 3: Identification of the SENDING system. Allows to differentiate different systems on ...
JWS can be used for applications in which digitally signed information must be sent in a machine-readable format, such as e-commerce.For example, say a user named Bob is browsing widget prices on a web site (widgets.com), and wishes to get a quote on one of them.
This header field is part of HTTP version 1.1, and is ignored by some caches and browsers. It may be simulated by setting the Expires HTTP version 1.0 header field value to a time earlier than the response time. Notice that no-cache is not instructing the browser or proxies about whether or not to cache the content.
Ed25519 is the EdDSA signature scheme using SHA-512 (SHA-2) and an elliptic curve related to Curve25519 [2] where =, / is the twisted Edwards curve + =, = + and = is the unique point in () whose coordinate is / and whose coordinate is positive.
where H = E k (0 128) is the hash key, a string of 128 zero bits encrypted using the block cipher, A is data which is only authenticated (not encrypted), C is the ciphertext, m is the number of 128-bit blocks in A (rounded up), n is the number of 128-bit blocks in C (rounded up), and the variable X i for i = 0, ..., m + n + 1 is defined below.
Specifies the number of bytes remaining in the packet after this field. Can be zero. If the PES packet length is set to zero, the PES packet can be of any length. A value of zero for the PES packet length can be used only when the PES packet payload is a video elementary stream. [6] Optional PES header: variable length (length >= 3)