#base64 #codec #base32 #hex

no-std data-encoding

Efficient and customizable data-encoding functions like base64, base32, and hex

20 stable releases

2.8.0 Feb 9, 2025
2.6.0 Apr 28, 2024
2.5.0 Nov 21, 2023
2.4.0 May 20, 2023
1.1.1 Dec 12, 2015

#19 in Encoding

Download history 1083521/week @ 2024-10-30 1084978/week @ 2024-11-06 1141230/week @ 2024-11-13 1167782/week @ 2024-11-20 980567/week @ 2024-11-27 1242079/week @ 2024-12-04 1370988/week @ 2024-12-11 897760/week @ 2024-12-18 475930/week @ 2024-12-25 860712/week @ 2025-01-01 1295869/week @ 2025-01-08 1330959/week @ 2025-01-15 1352043/week @ 2025-01-22 1410242/week @ 2025-01-29 1583049/week @ 2025-02-05 1263720/week @ 2025-02-12

5,847,132 downloads per month
Used in 5,866 crates (492 directly)

MIT license

130KB
1.5K SLoC

CI Status Coverage Status

This library provides the following common encodings:

Name Description
HEXLOWER lowercase hexadecimal
HEXLOWER_PERMISSIVE lowercase hexadecimal (case-insensitive decoding)
HEXUPPER uppercase hexadecimal
HEXUPPER_PERMISSIVE uppercase hexadecimal (case-insensitive decoding)
BASE32 RFC4648 base32
BASE32_NOPAD RFC4648 base32 (no padding)
BASE32_NOPAD_NOCASE RFC4648 base32 (no padding, case-insensitive decoding)
BASE32_NOPAD_VISUAL RFC4648 base32 (no padding, visual-approx. decoding)
BASE32HEX RFC4648 base32hex
BASE32HEX_NOPAD RFC4648 base32hex (no padding)
BASE32_DNSSEC RFC5155 base32
BASE32_DNSCURVE DNSCurve base32
BASE64 RFC4648 base64
BASE64_NOPAD RFC4648 base64 (no padding)
BASE64_MIME RFC2045-like base64
BASE64_MIME_PERMISSIVE RFC2045-like base64 (ignoring trailing bits)
BASE64URL RFC4648 base64url
BASE64URL_NOPAD RFC4648 base64url (no padding)

It also provides the possibility to define custom little-endian ASCII base-conversion encodings for bases of size 2, 4, 8, 16, 32, and 64 (for which all above use-cases are particular instances).

See the documentation for more details.

No runtime deps

Features