pur.techbook.de

Issued by R3

About this certificate

This digital certificate with serial number 03:16:26:bb:8a:2a:ce:33:4a:70:8c:4e:8a:0d:eb:4a:ca:63 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=pur.techbook.de

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:16:26:bb:8a:2a:ce:33:4a:70:8c:4e:8a:0d:eb:4a:ca:63
Serial Number (int): 268874554293257683000303703094710938290787
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 89:e1:48:3a:5c:2c:c9:79:f1:84:26:23:fb:ac:a8:57:ec:ed:7d:7d
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): af:4f:dd:a7:1f:30:52:9f:13:69:7f:72:42:49:50:ad:fb:d9:3e:5d
Fingerprint (sha256): 20:b6:ba:51:97:da:44:ec:80:8e:7e:b6:87:cf:25:fc:c7:29:2d:0c:e8:c7:2f:fc:0a:9e:d5:ba:22:f1:54:87

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

Revocation information

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

Check the revocation status for certificate pur.techbook.de

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for pur.techbook.de

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

pur.techbook.de

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Certificate

The complete raw certificate details for pur.techbook.de in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx/Zsarw6sAToBFWQK+v3
llJsKerR0yEJg2D3dSrH9sEBJj4c1YEBM+NOa8AfwODQhHzpqKNbvI0kQDBBFIzV
rgloObjsWButPUYEC2hiXNtcD3t731T2G/hxTGkO9BJWOe/oZpDQ8orz6wHH8WyH
GfO9IZqEgeXTofgq0BrGvLGInQhkttQUm9UgTrnX5blpgllbayKH5WqxWt17dh0r
Zex5SMNFC+L6ZoizjoqGHvfWqXs7OG6a+RU+8frqwLOkM+ILTPF2/897zjkum63m
XmFFPDWyk01rA2W4TBGROPKBTfYFjfNgQnEXH37J0I98dj6BhDt9MFraOWmkKjre
FQIDAQAB
-----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 268874554293257683000303703094710938290787
 . . . . . . . . [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 2023-01-26 09:58:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-04-26 09:57:59 +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 'pur.techbook.de'
 . . . . . . . . [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 25242938646857762842363782448617757723708632064694150728253001514700601154198459360289562571495374462963431450617389093258658790474580675956695149948138090287259772271251314839782113235106276262519683487155474947614322990405188596073112459806069931809436942258696910988904420112628650080140610616823551516057261729778173753377947738716116087580932161071697296198069716483942279861188506501099348243257820996869946508859333649860302213945360266898016136881274455280925666190795609342693931495370948756113687107643489991516894006174659334330899930326551709108746448779361335609444970194566226628091581759581948017827349
 . . . . . . . . . . . . . . . . . . . . [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)
							89e1483a5c2cc979f1842623fbaca857eced7d7d
 . . . . . . . . . . . . . . . . [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 (19 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'pur.techbook.de'
 . . . . . . . . . . . . . . . . [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)
							00f00076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb5200000185edba30680000040300473045022019cad0e2bfae9fd15098abe5fdad8714d9d4a1422bf04c172049e5db4e404d7102210081dafcc2730e476044f1e7804df09b0f63111bdf3b8f6581ae4d666404e634c8007600adf7befa7cff10c88b9d3d9c1e3e186ab467295dcfb10c24ca858634ebdc828a00000185edba30850000040300473045022100b9afeb6519b7b87b0464b176d2ef956d05579db6c9a4d86e62be222ff6d4bea7022076ed4d67a28a5356fe431bf933820bcc523bb80731362bde55c3f54ef1a2b63b
 . . . . [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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