Base.hex_decode32-exclamation-mark

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hex_decode32!(string, opts \\ [])

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Specs

hex_decode32!(binary(), keyword()) :: binary()

Decodes a base 32 encoded string with extended hexadecimal alphabet into a binary string.

An ArgumentError exception is raised if the padding is incorrect or a non-alphabet character is present in the string.

Options

The accepted options are:

  • :case - specifies the character case to accept when decoding
  • :padding - specifies whether to require padding

The values for :case can be:

  • :upper - only allows upper case characters (default)
  • :lower - only allows lower case characters
  • :mixed - allows mixed case characters

The values for :padding can be:

  • true - requires the input string to be padded to the nearest multiple of 8 (default)
  • false - ignores padding from the input string

Examples

iex> Base.hex_decode32!("CPNMUOJ1E8======")
"foobar"

iex> Base.hex_decode32!("cpnmuoj1e8======", case: :lower)
"foobar"

iex> Base.hex_decode32!("cpnMuOJ1E8======", case: :mixed)
"foobar"

iex> Base.hex_decode32!("CPNMUOJ1E8", padding: false)
"foobar"