ecsel.ece.iastate.edu

Issued by R3

About this certificate

This digital certificate with serial number 03:08:d0:81:7d:92:1e:23:99:29:ce:2a:15:8b:73:b5:1c:5b 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=ecsel.ece.iastate.edu

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:08:d0:81:7d:92:1e:23:99:29:ce:2a:15:8b:73:b5:1c:5b
Serial Number (int): 264336268506944100911439734911850929003611
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 3b:c4:cc:81:af:44:f0:4a:e7:33:30:9c:40:f7:c1:b8:d9:ee:52:32
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 44:39:86:2d:f8:93:5c:ab:87:1f:93:cd:00:82:78:af:39:2e:ff:47
Fingerprint (sha256): 00:e9:2c:08:2a:33:f1:1a:37:0d:43:59:d2:91:91:5c:55:ba:32:d6:57:26:e9:eb:6b:86:8e:74:82:35:5f:4f

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

Revocation information

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

Check the revocation status for certificate ecsel.ece.iastate.edu

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for ecsel.ece.iastate.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

ecsel.ece.iastate.edu

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Certificate

The complete raw certificate details for ecsel.ece.iastate.edu in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4gdVRCnScH3tYl5Bvsju
6E8cSa2ySKXnietpBcRg2o1I1M3GkboDUPkFN5REfjPfOP5L1wbE16uBDEjCKQw6
iD5Y3h49RJ4zkF7+a5JZS1BKr162gBR97UBKDro/dCqChns7dqBQ1NXxNlq/Km8o
GYfqv6nqpw/Hy/+5/rP8CG13nNG8N5VdLqebCLZDAi9EREGblP0HRxM5+zAoVwoj
GeDmpVVnw0XwEQ/Arfjm27Q79+Dxu9Awsw/2lC3B5q3gv99DRopOel5sT9uLBBJH
eKp87MxtsRGHbeD86M0Q5nBcLC2cJFGXGBVeiDS7rGxSbIbpMcoft/tOSXnyk0il
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 264336268506944100911439734911850929003611
 . . . . . . . . [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 2023-12-05 20:40:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-04 20:40:07 +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 'ecsel.ece.iastate.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 28533472994580079735115538856015515476435475191925534573281832465752837452921412105460288866146637727299883869284678725599353563229676377316797243630543984676196390964581352975588682505493349289554788779156648281385300624568253816658041825095978494042650098424906259342233322265912145089770122951662132824376997918277431464819237988062207078043561484119718825394729968051906770516700232366728423554492433535580745964966829320224189166815879840098455015648335551952287883001401207882943629415839449402576705860475127476437038282475149339770841631023729146239891223468285744718865876372148168713761839343778749544441231
 . . . . . . . . . . . . . . . . . . . . [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)
							3bc4cc81af44f04ae733309c40f7c1b8d9ee5232
 . . . . . . . . . . . . . . . . [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 (25 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ecsel.ece.iastate.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 (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 (247 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
							00f200770048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c3bec8f310000040300483046022100d9b2f8e83722f66b96fe1e10db359a1b7bcd12ea1decd0153895bcd5f2b06572022100b5235e6c9e3d9ead08e459fb6ed4b3458acd985783a8c0a2c432d96570f7e81b0077003b5377753e2db9804e8b305b06fe403b67d84fc3f4c7bd000d2d726fe1fad4170000018c3bec8f390000040300483046022100bafed993214b153472810dfef4be93ce83d5c66e336c6e17e3e8a59c781d787a022100df61777f0b1234a4baa1d0f00009a7e6c19380dee88d943be3af21bfcd7103f6
 . . . . [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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