dk.simongray.webcrypto.bytes — dk.simongray/webcrypto-clj 0.1.0

Bytes on both platforms, a byte array on the JVM and a Uint8Array in JavaScript, and their encodings: UTF-8, hex, base64 and base64url.

Each decoder returns nil for text that isn't valid. The decoders of base64 are strict on both platforms: they take only the alphabet, the padding where RFC 4648 asks for it and pad bits of zero, so that no two texts decode to the same bytes.

at clj/s

(at b i)

The byte at the index i of b, as a number from 0 to 255.

base64 clj/s

(base64 b)

The bytes b in base64, with padding.

base64url clj/s

(base64url b)

(base64url b {:keys [padding?] :as opts})

The bytes b in base64url, the alphabet of base64 for URLs and file names, with opts:

• :padding?, true to pad the text to a multiple of four characters, as base64 is. It's false by default, as in JOSE and most other uses.

bytes? clj/s

(bytes? x)

Whether x is bytes: a byte array on the JVM, or a Uint8Array in JavaScript (and a Buffer in Node is one).

concat clj/s

(concat & bs)

The bytes of each of bs, one after another, as new bytes.

decode clj/s

(decode b)

The text of the UTF-8 bytes b. A byte order mark stays, and bytes that aren't UTF-8 become U+FFFD, though the JVM and JavaScript can differ in how many.

encode clj/s

(encode s)

The bytes of the text s in UTF-8. A lone surrogate, which UTF-8 can't hold, becomes U+FFFD on both platforms, as with TextEncoder.

from-base64 clj/s

(from-base64 s)

The bytes of the base64 text s, which has its padding, or nil when it isn't base64.

from-base64url clj/s

(from-base64url s)

The bytes of the base64url text s, with or without padding, or nil when it isn't base64url.

from-hex clj/s

(from-hex s)

The bytes of the hexadecimal text s, in upper or lower case, or nil when it isn't hexadecimal or has an odd number of digits.

hex clj/s

(hex b)

The bytes b in hexadecimal, two digits in lower case for each byte.

length clj/s

(length b)

The number of bytes in b.

of clj/s

(of xs)

The bytes of the numbers xs, each from 0 to 255.

same-text? clj/s

(same-text? a b)

Whether a and b are the same text, in a time that doesn't tell where they differ. Nil or another value is never the same.

same? clj/s

(same? a b)

Whether a and b are the same bytes, in a time that doesn't tell where they differ, as a comparison of secrets needs. Nil or another value is never the same.

slice clj/s

(slice b start)

(slice b start end)

The bytes of b from start to end, or to the end of b, as new bytes. It throws when they aren't within b.