kristal.ai

Issued by R3

About this certificate

This digital certificate with serial number 03:03:92:13:27:98:3b:52:ee:fe:f6:9b:e6:b6:82:e6:84:75 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=kristal.ai

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:03:92:13:27:98:3b:52:ee:fe:f6:9b:e6:b6:82:e6:84:75
Serial Number (int): 262551871640143480330137179815057107092597
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 27:e9:a1:57:c1:3e:a9:26:83:6b:c0:15:20:66:7c:d3:9a:6f:c7:af
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 68:23:5c:dd:de:4c:61:09:35:8e:ae:6b:f8:5d:d1:88:7d:7f:4b:21
Fingerprint (sha256): 5a:10:f9:46:f8:f7:b0:4f:6a:11:5c:19:4d:83:2c:ea:17:ef:6e:4c:b1:c7:af:1a:a4:f6:e6:24:d8:f3:49:d9

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

Revocation information

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

Check the revocation status for certificate kristal.ai

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for kristal.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

kristal.ai

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Certificate

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

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs0lQpyCbGWR3ghzaJIw8
tln+BszgnVYpgBkpUSy2v0hvOm33ZlA6m+VpTasHBPi0I8XSsBiAsNtw4U9ZNVTp
IGB1N5J2Tj8Wm0fxjK5Vho1Vm9K+bWWBqWXxBNtsml1dLJYn9DRcQG/rJhTNggxf
3YFE5ncFsA6QbmWudY/MYF7D7Wi91Qj6vGupCIJI2AgdRjHbs9Fd6nyDY8CIL25+
/fRGlMRMWjrAMlY2AL2ivHgEQfa1cinKaNtuVu68Ckt8uVVcVvkIH5eMzOciqX8i
I+hIqo3mycIUDCf0f9di4rwDL/wB7rQq8+YRchz7vH6XhgxHsH6vTjZYod3d3mn1
dQIDAQAB
-----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 262551871640143480330137179815057107092597
 . . . . . . . . [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 2023-11-02 00:10:13 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-31 00:10:12 +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 'kristal.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 22632809587599711090142212102955128970941481416716170481645758521192219096848794675269568273356874485524052292742051241074589044476029314715439859976726667400826661881754386072057030292309404682417809667670841088777320721417701076787823191727974773579722694353451524714165701180343389837885856569921041357856549753913035529569481093240406606025993335097640059109792234154776309892695421250269807418671140469230059239340589152852517493880085049944383238992969683053346432063920505800450817524777250630801957746141994845686309943680587179912897834164913614290775193904013460138350868768736981798931809848144235940410741
 . . . . . . . . . . . . . . . . . . . . [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)
							27e9a157c13ea926836bc01520667cd39a6fc7af
 . . . . . . . . . . . . . . . . [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 (14 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kristal.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 (12 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b8d94b08c0000040300473045022100b4c368a6a86b34c89bbf6c7bb2c47536d23975a9779ef38aca5d632781e4604a02200e6c4b0e1d3df115a699305d70ca564038a313e7694f0ac84ea602a1296c19ec00760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018b8d94b0b20000040300473045022005e4985ff36672332ced0a694b7e39cc2150e9a4c841c473d0fc1b1094774461022100e9868923267e792724d025699e2ec6a701459daa01d36894cc57ae863e67292e
 . . . . [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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