Web Cryptography

JavaScript API for performing basic cryptographic operations in web applications

Spec	https://www.w3.org/TR/WebCryptoAPI/
Status	W3C Recommendation

IE	Edge	Firefox	Chrome	Safari	Opera
			103
		100	102
		99	101	TP
11 (1,*)	99	98	100	15.4	83
10	98	97	99	15.2-15.3	82
9	97	96	98	15.1	81
8	96	95	97	15	80
Show all
7	95	94	96	14.1	79
6	94	93	95	14	78
5.5	93	92	94	13.1	77
	92	91	93	13	76
	91	90	92	12.1	75
	90	89	91	12	74
	89	88	90	11.1	73
	88	87	89	11	72
	87	86	88	10.1 (2,*)	71
	86	85	87	10 (2,*)	70
	85	84	86	9.1 (2,*)	69
	84	83	85	9 (2,*)	68
	83	82	84	8 (2,*)	67
	81	81	83	7.1 (2,*)	66
	80	80	81	7	65
	79	79	80	6.1	64
	18 (3)	78	79	6	63
	17 (3)	77	78	5.1	62
	16 (3)	76	77	5	60
	15 (3)	75	76	4	58
	14 (3)	74	75	3.2	57
	13 (3)	73	74	3.1	56
	12 (3)	72	73		55
		71	72		54
		70	71		53
		69	70		52
		68	69		51
		67	68		50
		66	67		49
		65	66		48
		64	65		47
		63	64		46
		62	63		45
		61	62		44
		60	61		43
		59	60		42
		58	59		41
		57	58		40
		56	57		39
		55	56		38
		54	55		37
		53	54		36
		52	53		35
		51	52		34
		50	51		33
		49	50		32
		48	49		31
		47	48		30
		46	47		29
		45	46		28
		44	45		27
		43	44		26
		42	43		25
		41	42		24
		40	41		23
		39	40		22
		38	39		21
		37	38		20
		36	37		19
		35	36		18
		34	35		17
		33	34		16
		32	33		15
		31	32		12.1
		30	31		12
		29	30		11.6
		28	29		11.5
		27	28		11.1
		26	27		11
		25	26		10.6
		24	25		10.5
		23	24		10.0-10.1
		22	23		9.5-9.6
		21	22		9
		20	21
		19	20
		18	19
		17	18
		16	17
		15	16
		14	15
		13	14
		12	13
		11	12
		10	11
		9	10
		8	9
		7	8
		6	7
		5	6
		4	5
		3.6	4
		3.5
		3
		2

Safari on iOS	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser	KaiOS Browser
15.4	all	99	10	64	100	98	11 (1,*)	12.12	16.0	10.4	7.12	2.5
15.2-15.3		4.4.3-4.4.4	7	12.1			10		15.0
15.0-15.1		4.4		12					14.0
14.5-14.8		4.2-4.3		11.5					13.0
Show all
14.0-14.4		4.1		11.1					12.0
13.4-13.7		4		11					11.1-11.2
13.3		3		10					10.1
13.2		2.3							9.2
13.0-13.1		2.2							8.2
12.2-12.5		2.1							7.2-7.4
12.0-12.1									6.2-6.4
11.3-11.4									5.0-5.4
11.0-11.2									4
10.3 (2,*)
10.0-10.2 (2,*)
9.3 (2,*)
9.0-9.2 (2,*)
8.1-8.4 (2,*)
8 (2,*)
7.0-7.1
6.0-6.1
5.0-5.1
4.2-4.3
4.0-4.1
3.2

Notes

Many browsers support the crypto.getRandomValues() method, but not actual cryptography functionality under crypto.subtle.

1. Support in IE11 is based on an older version of the specification.

2. Support in Safari before version 11 was using the crypto.webkitSubtle prefix.

3. In Edge 12-18, Web Crypto was not supported in Web Workers and Service Workers.

^* Partial support with prefix.

Resources

• The History and Status of Web Crypto API
• Microsoft Research JavaScript Cryptography Library
• Cross-browser cryptography library
• Support for recommended algorithms in Firefox
• Polyfill by Netflix with partial support
• PKI.js - another crypto library for Public Key Infrastructure applications
• Test suite for various algorithms/methods
• Web Cryptography API shim for IE11 and Safari - set of bugfixes and workarounds of prefixed api implementations
• MDN Web Docs - Web Crypto API