poczta.tuf.pl

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 04:1a:4d:07:a9:26:23:bd:a8:a2:5b:e2:64:fb:f8:77:37:8f 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=poczta.tuf.pl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:1a:4d:07:a9:26:23:bd:a8:a2:5b:e2:64:fb:f8:77:37:8f
Serial Number (int): 357398875599487789353900894005908936800143
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 66:57:f1:fd:89:11:b7:a5:2a:82:e8:b6:05:c6:a2:b1:04:5b:78:9f
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 5a:f8:34:c2:9e:06:0d:c0:eb:7f:d7:bb:5b:6d:69:52:64:25:63:6d
Fingerprint (sha256): b9:b5:5c:9a:84:bb:2f:83:ae:72:ce:8e:ec:e3:e4:a6:3c:01:2c:f5:13:07:96:33:e7:7e:a2:ca:b8:62:13:4a

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 poczta.tuf.pl

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for poczta.tuf.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

poczta.tuf.pl

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Certificate

The complete raw certificate details for poczta.tuf.pl in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx1aCDvZmXQ0/pLdQRP1e
pdB/coWOtIkjWUiTV5HvBVMCSCcLlWb58iAbJnYSFHQhZw/O/AZnDzGwIMfFy4z0
9HCgGu57KQMSY8tSmj603P0zoUDahPueDjU/bk6SGPdbXdqTs0+dOZtdf7fz6ug3
YholdcfDFqY4UwTOmZbfjOuWxFU5fXrh/S53Zww+byoiY+DAvL7XFIdd7wf/7DHt
H0M0xnPgNqY7I2Te2NOyv4q1fQU/O6KgeYUzZc0VwJdibnb8i9ddmuNArUTDmb6E
ln+AbBmTqxw/MZtFXYPo3rnGf66ZjYcYjB5gUl3DJw/9fZCJTPpN/NDxEzmOseFY
JwIDAQAB
-----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 357398875599487789353900894005908936800143
 . . . . . . . . [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 2020-03-01 21:02:55 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-30 21:02:55 +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 'poczta.tuf.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 25164081393080593228337138307106405376874962429253060105543626193433439274344939608605231950976928556151709169261382151754739432511000624280849217277164730261896028017368916515439163473954321385399640396383776777637062528190791303182900317568360485683623937699882955962514153949386205236357260623750201301308371012701275438529399529736198693021383801000740026785915819254283762246506568494579917840791022665774061478801463292955210764471141177723451725807626492309864812212391484872127654679650270090333367035417797705335781513170255708457476123530593343967139727456095591587911451346278220490010988944419701313853479
 . . . . . . . . . . . . . . . . . . . . [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)
							6657f1fd8911b7a52a82e8b605c6a2b1045b789f
 . . . . . . . . . . . . . . . . [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 (17 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'poczta.tuf.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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb27300000170981fa526000004030047304502207737a57e7274b06aa7ac3c51fb22ddd1a45f6e20e5cc62616cb6894d195bb9cd022100daa1702ebe21cde5f4573664b725f00ea59e43ac671d65423ba13ccdc73d085000760007b75c1be57d68fff1b0c61d2315c7bae6577c5794b76aeebc613a1a69d3a21c00000170981fa54d000004030047304502203875d1114c45b89b074281fcb66920ea8742f18b2a919b8597e4e66cae1ba6a5022100969b81d75184276704512eb7cd003b16dea2452bd37da777be6d3a4cb5de42b9
 . . . . [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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