crates.io · crates:base64ct

base64ct active

Pure Rust implementation of Base64 (RFC 4648) which avoids any usages of data-dependent branches/LUTs and thereby provides portable "best effort" constant-time operation and embedded-friendly no_std support

Latest stable version	1.8.3
Published	2026-01-12 04:41:30 UTC
Install	`cargo add base64ct`
Minimum Rust version (rust-version)	`Rust ≥ 1.85`
License	Apache-2.0 OR MIT
Advisories on latest version	none known
Last verified	2026-10-08 14:53:48 UTC
Sources	api.osv.dev, crates.io

Maintenance

Activity	slowing down
Last stable release	2026-01-12 04:41:30 UTC · 269 days ago
Stable releases in the last 12 months	3
Published versions	31

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

Version	Published
`1.8.3`	2026-01-12 04:41:30 UTC
`1.8.2`	2026-01-03 21:31:46 UTC
`1.8.1`	2025-12-07 02:41:24 UTC
`1.8.0`	2025-06-04 15:41:05 UTC
`1.7.3`	2025-03-13 18:56:37 UTC
`1.7.2`	2025-03-13 15:25:34 UTC
`1.7.1`	2025-03-11 00:09:46 UTC
`1.7.0` withdrawn	2025-02-26 07:31:21 UTC
`1.6.0`	2023-02-26 19:44:37 UTC
`1.5.3`	2022-10-18 22:18:31 UTC
`1.5.2`	2022-08-23 20:48:24 UTC
`1.5.1`	2022-06-27 03:09:28 UTC
`1.5.0`	2022-03-30 04:34:47 UTC
`1.4.1`	2022-03-11 20:12:42 UTC
`1.4.0` withdrawn	2022-03-11 03:16:07 UTC
`1.3.3`	2021-12-29 00:34:04 UTC
`1.3.2` withdrawn	2021-12-27 15:51:27 UTC
`1.3.1` withdrawn	2021-12-20 21:59:28 UTC
`1.3.0` withdrawn	2021-12-03 01:18:29 UTC
`1.2.0`	2021-11-03 15:12:31 UTC

Showing the 20 most recent of 30 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

Runtime	Newest compatible version
`rust 1.63`	`1.6.0`
`rust 1.70`	`1.6.0`
`rust 1.75`	`1.6.0`
`rust 1.80`	`1.6.0`
`rust 1.85`	`1.8.3`
`rust 1.90`	`1.8.3`

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Frequently asked questions

What is the latest version of base64ct?

The latest stable version of base64ct is 1.8.3, published on 2026-01-12. Verified by Vigia on 2026-10-08.

How do I install the latest version of base64ct?

Run cargo add base64ct. The latest stable version is 1.8.3 (verified 2026-10-08).

Is base64ct deprecated?

No. base64ct is not marked as deprecated in the registry.

Which Rust version does base64ct require?

base64ct 1.8.3 declares this requirement: Rust ≥ 1.85.

Does base64ct 1.8.3 have known vulnerabilities?

No known advisories affect base64ct 1.8.3 according to the data Vigia checks.

Is base64ct still maintained?

base64ct published 3 stable releases in the last 12 months; the most recent was 269 days ago. Activity: slowing down.

Observed changes

No changes observed yet since Vigia started tracking this package.

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