Package 'base64url'

Title: Fast and URL-Safe Base64 Encoder and Decoder
Description: In contrast to RFC3548, the 62nd character ("+") is replaced with "-", the 63rd character ("/") is replaced with "_". The resulting encoded strings comply to the regular expression pattern "[A-Za-z0-9_-]" and thus are safe to use in URLs or for file names. The package also comes with a simple base32 encoder/decoder suited for case insensitive file systems.
Authors: Michel Lang [cre, aut] , Apache Foundation [ctb, cph], Free Software Foundation [ctb, cph]
Maintainer: Michel Lang <[email protected]>
License: GPL-3
Version: 1.4
Built: 2024-11-09 03:22:01 UTC
Source: https://github.com/mllg/base64url

Help Index

Encode to base32 or Decode from base32

Description

Simple RFC4648 base32 encoder/decoder. Pads with “=”.

Usage

base32_encode(x, use.padding = FALSE)

base32_decode(x, use.padding = FALSE)

Arguments

x

[character(1)]
Character vector to encode or decode.
use.padding

[logical(1)]
If TRUE, base32_encode returns a string whose length is a multiple of 8, padded with trailing “=” if required. base32_decode expects such a string unless this is set to FALSE (default). The internal algorithm currently works with padding, thus it is faster to set this to TRUE.

Value

[character] of the same length as input x.

References

Implementation based on base32 encoder/decoder in the GNU lib: https://www.gnu.org/software/gnulib/.

Examples

x = "plain text"
encoded = base32_encode(x)
decoded = base32_decode(encoded)
print(encoded)
print(decoded)

Encode to base64 or Decode from base64

Description

In contrast to RFC3548, the 62nd character (‘+’) is replaced with ‘-’, the 63rd character (‘/’) is replaced with ‘_’. Furthermore, the encoder does not fill the string with trailing ‘=’. The resulting encoded strings comply to the regular expression pattern “[A-Za-z0-9_-]” and thus are safe to use in URLs or for file names.

Usage

base64_urlencode(x)

base64_urldecode(x)

Arguments

x

[character(1)]
Character vector to encode or decode.

Value

[character] of the same length as input x.

References

Implementation based on base64 encoder/decoder in the Apache Portable Runtime (APR): https://svn.apache.org/repos/asf/apr/apr/trunk/encoding/apr_base64.c

Examples

x = "plain text"
encoded = base64_urlencode(x)
decoded = base64_urldecode(encoded)
print(encoded)
print(decoded)