hex package:hex-text

ByteString-Text hexidecimal conversions Encode a ByteString as a hexidecimal Text value, or decode hexidecimal Text as a ByteString.

Decodes hexadecimal text as a byte string

Encodes a byte string as hexadecimal number represented in text Each byte of the input is converted into two characters in the resulting text.

>>> (encodeHex . ByteString.singleton) 192
"c0"

>>> (encodeHex . ByteString.singleton) 168
"a8"

>>> (encodeHex . ByteString.pack) [192, 168, 1, 2]
"c0a80102"

Text produced by encodeHex can be converted back to a ByteString using decodeHex. The lazy variant of encodeHex is lazilyEncodeHex.

The lazy variant of encodeHex With laziness, it is possible to encode byte strings of infinite length:

>>> (LazyText.take 8 . lazilyEncodeHex . LazyByteString.pack . cycle) [1, 2, 3]
"01020301"