proton.ai

Issued by R3

About this certificate

This digital certificate with serial number 04:2a:df:9d:60:76:13:56:4b:d1:a7:f5:99:09:b9:7b:b4:38 was issued on by Let's Encrypt.

This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=proton.ai

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:2a:df:9d:60:76:13:56:4b:d1:a7:f5:99:09:b9:7b:b4:38
Serial Number (int): 363038238127853457927648163208489584014392
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: c3:53:33:c4:1a:59:06:29:20:5d:77:c9:c0:81:81:bb:a2:bb:3c:26
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): d1:eb:6d:bf:b3:16:dc:f1:18:7d:ea:8c:1e:68:b7:d1:58:a6:97:cc
Fingerprint (sha256): ef:d3:ce:1d:5a:3d:25:54:ee:55:97:93:b7:97:8b:1e:c1:11:85:23:03:96:f8:4e:2b:a1:e7:a4:c7:41:f8:2a

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate proton.ai

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for proton.ai

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

proton.ai

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Certificate

The complete raw certificate details for proton.ai in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----
MIIFGTCCBAGgAwIBAgISBCrfnWB2E1ZL0af1mQm5e7Q4MA0GCSqGSIb3DQEBCwUA
MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQD
EwJSMzAeFw0yMzAxMDYyMzEyMDdaFw0yMzA0MDYyMzEyMDZaMBQxEjAQBgNVBAMT
CXByb3Rvbi5haTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANYSi5ND
X4mbcxQpT7DIdprnqJsHB5qdKRN4YZyjaLq7qoQTZbS/S1+xmNwGSHW8Zo3lHQq8
FJdRK0ok7Rx87nM0W5MQNkyQNLdZF+AysleMSmBpNqwySjn1E8CScOWsCnpdIFU+
wb9m745YPbfBCsu+fc4qevZi9R+cjhHUZAUF6IKTO8F4tmBeCseqdcWurM6qH1Ud
8qVkoa7+F6+5A5oMZ2J+U9/8rTobLRC7Y3oX4/KKiDjkoyJKkE8tsWl8HXNUlee6
CN2tNrrf66bYm5cF60lZqAcv6MsOLtP/4eJ0013NouUreTko4VrYeNqu3TO3pjNi
ZcXcF61PEB3G1SkCAwEAAaOCAkUwggJBMA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUE
FjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU
w1MzxBpZBikgXXfJwIGBu6K7PCYwHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlA5h+v
nYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMuby5s
ZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8wFAYD
VR0RBA0wC4IJcHJvdG9uLmFpMEwGA1UdIARFMEMwCAYGZ4EMAQIBMDcGCysGAQQB
gt8TAQEBMCgwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn
MIIBBQYKKwYBBAHWeQIEAgSB9gSB8wDxAHcArfe++nz/EMiLnT2cHj4YarRnKV3P
sQwkyoWGNOvcgooAAAGFiZIJZgAABAMASDBGAiEAm4T/1hi0Tk2b+zqVlU078k+G
2Z5HSCPNi5IICE6GC98CIQD7yT7CAvVMYTfXRGwMhEUu5wFWWGumQJRjCkxAQ0W/
mAB2ALc++yTfnE26dfI5xbpY9Gxd/ELPep81xJ4dCYEl7bSZAAABhYmSCzcAAAQD
AEcwRQIgdh9pocROWC2Di9qABcSQY8REk2iNhvgELWnODcN75ZMCIQDpVqFN6ksa
n3ffUYgZ+COmq/NyUx1SVryePgym+IxPbTANBgkqhkiG9w0BAQsFAAOCAQEAhD/F
wA2mrHSZmyYvrdGJkQy/TBYubYUsNfPthpLlVxI36iE695DGFUsLZj0o8Fpjm/83
38oUm5qCJhi0Xvhis9JsEsvo+cKIkuVK3rTjYe46eMz9ScpUShjp1MyOmdNUgd0t
Q7QlVM+VRYaAUnyOUsevKZn5h7N3BKqNDASd4DhF8Xzs9s5tTzpreuYRQoPOPCo+
zMrYlnx/EySktPPoJDtuR9xchy0xHTG9QWg7jtz8Qblqvg2KRdnu0PCE8DXAHYUY
I82/ROVUPq4f9jWAcp2wkUVV4+UG48oMunsMMMw88Y/mGDwzjEO+Nvo+kOZ6yYj8
hltqO3Nz+sOCpP1IUg==
-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1hKLk0NfiZtzFClPsMh2
mueomwcHmp0pE3hhnKNouruqhBNltL9LX7GY3AZIdbxmjeUdCrwUl1ErSiTtHHzu
czRbkxA2TJA0t1kX4DKyV4xKYGk2rDJKOfUTwJJw5awKel0gVT7Bv2bvjlg9t8EK
y759zip69mL1H5yOEdRkBQXogpM7wXi2YF4Kx6p1xa6szqofVR3ypWShrv4Xr7kD
mgxnYn5T3/ytOhstELtjehfj8oqIOOSjIkqQTy2xaXwdc1SV57oI3a02ut/rptib
lwXrSVmoBy/oyw4u0//h4nTTXc2i5St5OSjhWth42q7dM7emM2JlxdwXrU8QHcbV
KQIDAQAB
-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 363038238127853457927648163208489584014392
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-01-06 23:12:07 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-04-06 23:12:06 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'proton.ai'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 27024142249489669360708022327974768618736583343029163986850907420183750782965863213629821917326215640611561478057676581386955979266965268940438905134358876374910422521205485626364913259240288854708244066464501316661474449900101292131352963790361471379161493242788602650969078917722450327335134450645997039759419473388070286824085320401689348710792631722239347159159524262764098044036968305764376282401605286888689359937672741070567915967947206372717391328560064559713989873951537634952701384339702944598910243267564949677403489972494388848432461495932189751042703579114098562274796684126691036588054749112781586748713
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							c35333c41a590629205d77c9c08181bba2bb3c26
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (73 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.o.lencr.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r3.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (13 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'proton.ai'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a000001858992096600000403004830460221009b84ffd618b44e4d9bfb3a95954d3bf24f86d99e474823cd8b9208084e860bdf022100fbc93ec202f54c6137d7446c0c84452ee70156586ba64094630a4c404345bf98007600b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb4990000018589920b3700000403004730450220761f69a1c44e582d838bda8005c49063c44493688d86f8042d69ce0dc37be593022100e956a14dea4b1a9f77df518819f823a6abf372531d5256bc9e3e0ca6f88c4f6d
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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