cal.grzeg.pl

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:e5:e2:f7:26:17:53:b5:e3:0e:59:75:dc:7a:0d:08:37:9f 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=cal.grzeg.pl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:e5:e2:f7:26:17:53:b5:e3:0e:59:75:dc:7a:0d:08:37:9f
Serial Number (int): 426675494548887063629530860632753893291935
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 1f:b8:52:36:6f:74:7f:4d:c3:1b:ab:c1:2e:c1:cd:aa:30:76:2f:49
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 6f:7d:b6:96:25:f4:c2:e3:33:49:e5:a2:e0:83:a0:bd:91:e8:0e:56
Fingerprint (sha256): a1:37:e2:e1:fe:9c:7d:44:19:e3:c0:aa:92:4e:b8:5a:ad:7c:b1:4f:11:20:74:4c:89:bf:35:de:89:5c:f6:b1

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate cal.grzeg.pl

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for cal.grzeg.pl

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

cal.grzeg.pl

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Certificate

The complete raw certificate details for cal.grzeg.pl in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsmsj5PTTiuakgPcr3DSX
q+TWzZRmGEhuuMcHp3cZllcWUIWEz2Z5BopERUT5gaFKIxmdCV2V9yBxfoa1gURJ
apNQ62KfyscPMZEoo6sfjqBhbQvNsnzLHwCQGPOyBTCuf8y6tiNdITHCW8qKLbV7
U+JbReMsP487/jWeiF2lXf5JkKQMFjLu21rEX9woT8LSVGTDtKZOwxCI7rUplIXT
B7J36EStGjXaLu3bkuS4WDCli1f5MBd/p7VoON5n7RcF4ewRTNvkKX9DMdFzAXNr
UWFweDYHyv2stx6qr8j5rNTIs8h/+ZjEWIHysvNWgWbAUkSQgeu5KNYrPRAbob4p
gwIDAQAB
-----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 426675494548887063629530860632753893291935
 . . . . . . . . [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 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-08-30 02:00:25 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-11-28 02:00:25 +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 'cal.grzeg.pl'
 . . . . . . . . [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 22523251091772302466139632415129198475859570271570705190442137295962087861335842710098768682849085671626934092728055229496339588286982343183912118530813156743196099049841703623936274126384619292407372150576691710533874833890634219666902601281377123898606424468618022110827437997275404930160596933838824093051847451289952803334165307546340035873824380986191465670193477940339752965504244346702890339667122008918788106236368434945692207581519682622943358439255016454733064758639278381478661331528849464416968500440453866544618623855537645370662673988086729706351796334945618835095264605918761461501206559114522580101507
 . . . . . . . . . . . . . . . . . . . . [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)
							1fb852366f747f4dc31babc12ec1cdaa30762f49
 . . . . . . . . . . . . . . . . [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 a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [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 (99 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://ocsp.int-x3.letsencrypt.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://cert.int-x3.letsencrypt.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 (16 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cal.grzeg.pl'
 . . . . . . . . . . . . . . . . [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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef0076006f5376ac31f03119d89900a45115ff77151c11d902c10029068db2089a37d9130000016ce07787a9000004030047304502203d29a093e93dbd80d3627e4c2af8e15e515085223a6f5898e64f65beb211e1df02210091aa297825dedb30b2c2a923ed83c5a761ed540e007f8f53646eb2f0135ad1fd00750063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016ce077867f000004030046304402205a553b0316a63dc7140363c83258d9ad8e8e24bccaa0c72f822f82ddaa4c2b410220101432439a950224f0e9ebc2fea5b2bf8959c13a5abc6382446e582bf91a965a
 . . . . [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)
		0059382b28ff215f19ea8f5881d81a89b92c00221e7842b4077cec6c095e40e11deb1dead69bdbb0b6d15fc9e1aa73bc0feb3f68e24ea5ce0655e2e325f92db2530a61f9710e4c58246198259601219a15145e295a0c711c77123e71abce75088298c87970971e5e1e40d2af8b7593296d776a9d4b83d9ae53a0581f3c2086ff07f4f33b0b144c09d6b5110b9983700ee2aa16ef8bba2ce2622708bd978889ffb2ce58324fe47b93ef9f4f6b03a1dad6bd5f2d3d9c69a41ef91cf141c48b73d6e498cd7d49653fcfe4b6118a141344e9455d4263c154c8a6356025895d9abe535f0c8ecbc7f9efd1dc295daa3d2524593c0b7d320a1f149751958f13ddd738879a