EcdsaParams

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

* Some parts of this feature may have varying levels of support.

See full compatibility

The EcdsaParams dictionary of the Web Crypto API represents the object that should be passed as the algorithm parameter into SubtleCrypto.sign() or SubtleCrypto.verify() when using the ECDSA algorithm.

Instance properties

name

A string. This should be set to ECDSA.

hash

A string or an object containing a single property called name with a string value. It is an identifier for the digest algorithm to use. This should be one of the following:

SHA-256: selects the SHA-256 algorithm.
SHA-384: selects the SHA-384 algorithm.
SHA-512: selects the SHA-512 algorithm.

Warning: SHA-1 is also supported here but the SHA-1 algorithm is considered vulnerable and should no longer be used.

Examples

See the examples for SubtleCrypto.sign() or SubtleCrypto.verify().

Specifications

Specification
Web Cryptography Level 2 # SubtleCrypto-method-sign
Web Cryptography Level 2 # SubtleCrypto-method-verify

Browser compatibility

Browsers that support the "ECDSA" algorithm for the SubtleCrypto.sign() and SubtleCrypto.verify() methods will support this type.

api.SubtleCrypto.sign

	desktop					mobile							server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS	Bun	Deno	Node.js
`sign`	Chrome – Full support Chrome 37 (Release date: 2014-08-26) footnote Full support	Edge – Partial support Edge 12 – 18 (Release date: 2015-07-29) footnote Partial support footnote Not supported: RSA-PSS, ECDSA. Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 34 (Release date: 2014-12-01) footnote Full support	Opera – Full support Opera 24 (Release date: 2014-09-02) footnote Full support	Safari – Full support Safari 7 (Release date: 2013-10-22) footnote Full support	Chrome Android – Full support Chrome Android 37 (Release date: 2014-09-03) footnote Full support	Firefox for Android – Full support Firefox for Android 34 (Release date: 2014-12-01) footnote Full support	Opera Android – Full support Opera Android 24 (Release date: 2014-09-10) footnote Full support	Safari on iOS – Full support Safari on iOS 7 (Release date: 2013-09-18) footnote Full support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 37 (Release date: 2014-09-03) footnote Full support	WebView on iOS – Full support WebView on iOS 7 (Release date: 2013-09-18) footnote Full support	Bun – Full support Bun 1 (Release date: 2023-09-08) footnote Full support	Deno – Full support Deno 1.12 (Release date: 2021-07-13) footnote Full support	Node.js – Full support Node.js 15 (Release date: 2020-10-20) footnote footnote Supports: NODE-DSA
`Ed25519` algorithm	Chrome – Full support Chrome 137 (Release date: 2025-05-27) footnote Full support	Edge – Full support Edge 137 (Release date: 2025-05-29) footnote Full support	Firefox – Full support Firefox 129 (Release date: 2024-08-06) footnote Full support	Opera – Full support Opera 121 (Release date: 2025-08-27) footnote Full support	Safari – Full support Safari 17 (Release date: 2023-09-18) footnote footnote Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.	Chrome Android – Full support Chrome Android 137 (Release date: 2025-05-27) footnote Full support	Firefox for Android – Full support Firefox for Android 129 (Release date: 2024-08-06) footnote Full support	Opera Android – Full support Opera Android 90 (Release date: 2025-06-18) footnote Full support	Safari on iOS – Full support Safari on iOS 17 (Release date: 2023-09-18) footnote footnote Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 137 (Release date: 2025-05-27) footnote Full support	WebView on iOS – Full support WebView on iOS 17 (Release date: 2023-09-18) footnote footnote Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.	Bun – Full support Bun 1 (Release date: 2023-09-08) footnote Full support	Deno – Full support Deno 1.26 (Release date: 2022-09-29) footnote Full support	Node.js – Full support Node.js 16.17 (Release date: 2022-08-16) footnote Full support

Tip: you can click/tap on a cell for more information.

Full support: Full support
Partial support: Partial support
No support: No support
: See implementation notes.
: Has more compatibility info.

api.SubtleCrypto.verify

	desktop					mobile							server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS	Bun	Deno	Node.js
`verify`	Chrome – Full support Chrome 37 (Release date: 2014-08-26) footnote Full support	Edge – Partial support Edge 12 – 18 (Release date: 2015-07-29) footnote Partial support footnote Not supported: RSA-PSS, ECDSA. Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 34 (Release date: 2014-12-01) footnote Full support	Opera – Full support Opera 24 (Release date: 2014-09-02) footnote Full support	Safari – Full support Safari 7 (Release date: 2013-10-22) footnote Full support	Chrome Android – Full support Chrome Android 37 (Release date: 2014-09-03) footnote Full support	Firefox for Android – Full support Firefox for Android 34 (Release date: 2014-12-01) footnote Full support	Opera Android – Full support Opera Android 24 (Release date: 2014-09-10) footnote Full support	Safari on iOS – Full support Safari on iOS 7 (Release date: 2013-09-18) footnote Full support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 37 (Release date: 2014-09-03) footnote Full support	WebView on iOS – Full support WebView on iOS 7 (Release date: 2013-09-18) footnote Full support	Bun – Full support Bun 1 (Release date: 2023-09-08) footnote Full support	Deno – Partial support Deno 1.12 – 1.13 (Release date: 2021-07-13) footnote Partial support footnote Not supported: ECDSA, HMAC. Deno – Full support Deno 1.14 (Release date: 2021-09-14) footnote Full support	Node.js – Full support Node.js 15 (Release date: 2020-10-20) footnote footnote Supports: NODE-DSA
`Ed25519` algorithm	Chrome – Full support Chrome 137 (Release date: 2025-05-27) footnote Full support	Edge – Full support Edge 137 (Release date: 2025-05-29) footnote Full support	Firefox – Full support Firefox 129 (Release date: 2024-08-06) footnote Full support	Opera – Full support Opera 121 (Release date: 2025-08-27) footnote Full support	Safari – Full support Safari 17 (Release date: 2023-09-18) footnote Full support	Chrome Android – Full support Chrome Android 137 (Release date: 2025-05-27) footnote Full support	Firefox for Android – Full support Firefox for Android 129 (Release date: 2024-08-06) footnote Full support	Opera Android – Full support Opera Android 90 (Release date: 2025-06-18) footnote Full support	Safari on iOS – Full support Safari on iOS 17 (Release date: 2023-09-18) footnote Full support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 137 (Release date: 2025-05-27) footnote Full support	WebView on iOS – Full support WebView on iOS 17 (Release date: 2023-09-18) footnote Full support	Bun – Full support Bun 1 (Release date: 2023-09-08) footnote Full support	Deno – Full support Deno 1.26 (Release date: 2022-09-29) footnote Full support	Node.js – Full support Node.js 16.17 (Release date: 2022-08-16) footnote Full support