askus.library.uni.edu

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:b4:14:93:5f:32:07:f3:8c:bb:cf:59:88:a9:d5:31:88:5f 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=askus.library.uni.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:b4:14:93:5f:32:07:f3:8c:bb:cf:59:88:a9:d5:31:88:5f
Serial Number (int): 322615033599396347601659210761554665506911
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: bf:3d:72:bd:11:bc:a7:81:3b:64:b7:21:eb:1b:0a:d1:6e:1e:8c:97
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): b1:23:78:6c:c6:d9:a4:67:8a:d5:c1:8e:90:bc:0d:e3:ab:58:0b:50
Fingerprint (sha256): 19:22:1c:c3:b8:4b:b4:de:03:27:5a:2b:8b:95:41:fc:07:4f:85:46:0e:b2:d4:8a:d7:ff:ed:35:cd:c1:88:9e

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 askus.library.uni.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for askus.library.uni.edu

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

askus.library.uni.edu

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askus.library.uni.edu
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Certificate

The complete raw certificate details for askus.library.uni.edu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6Yx1Chk8wNN1Y5SCimQj
uHl0LSkse1Kn7JaxZYdBCJ8sP3rELnOKsa3Vb3cUhmb/2svhWOz/aJKZ9RZJYfGr
B+M3g4/bnq26d31gWiNy9S/VGB5xgjbMSKi3E48gSDfNxJBKtl+NV3aCW+ssokd2
0Z0wljd6Mx/aIxlo5Ieb+FwGzh+xtiKwb4TVaPqpvbiVtmrOiNT3NhFJP91E53kB
qTv6RxlS7yHfKmBucVeBYwbfga7u07IqJus7TKx8Bw7Ycm2aeDBtKZMOMPR3xdS6
oSFWw8RSPuhzK3SKYY4k/UzRPOmNntzRhz16BGboaZstWhNPI6ne7C9nsAnkHXb3
OwIDAQAB
-----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 322615033599396347601659210761554665506911
 . . . . . . . . [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 2019-06-17 11:11:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-09-15 11:11:04 +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 'askus.library.uni.edu'
 . . . . . . . . [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 29482787076614693354757673837960693040059304063348562905212556067205630788909310613214141679059744341801003332704572072249664469068396914426876125679462919963889877004063201759516027346592192279789906136905578088910324538628301232709917594361869780228606191823017361829841540442246120002285708550480314331939966922757288547700568518432871809506547776616193712768638953458088056189385212573454568875783340916128955653057576721850306695560024656343785568946252463203720723014689792459240269000162460485873509909475039202392509505048664179158951595810194901462193929082705462544538237167551887767465864870239963476064059
 . . . . . . . . . . . . . . . . . . . . [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)
							bf3d72bd11bca7813b64b721eb1b0ad16e1e8c97
 . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'askus.library.uni.edu'
 . . . . . . . . . . . . . . . . [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)
							00f0007600e2694bae26e8e94009e8861bb63b83d43ee7fe7488fba48f2893019dddf1dbfe0000016b6559120f0000040300473045022100952a276f2196cf10a211607060c0278d0ce0c4dcdca3f63e9ad69bc4608efde502203ed25c4709f6f58ed5e2361885848a9050d99562e4fe22f964c5b8d49f0bb75200760063f2dbcde83bcc2ccf0b728427576b33a48d61778fbd75a638b1c768544bd88d0000016b655912270000040300473045022100c3225cd68df771aceab1dd7d79ee8c80e0192b6a7b02e540168447e7546f2e16022054eb471de3e5a01321ac66de8a3a2c81fa4ce34a23bcef04027c108c27bc2f9b
 . . . . [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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