www.yuka.io

Issued by R3

About this certificate

This digital certificate with serial number 04:ba:c5:ed:e8:aa:02:55:13:d4:fe:6f:c2:da:b0:f1:47:36 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=www.yuka.io

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:ba:c5:ed:e8:aa:02:55:13:d4:fe:6f:c2:da:b0:f1:47:36
Serial Number (int): 412004757182849179468774079396229118248758
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 91:db:d2:3c:bc:25:0a:77:ad:ea:9a:7b:e1:3d:59:b1:b9:7c:96:6e
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 3f:c2:15:24:cc:61:e3:6b:2d:2b:34:41:e5:90:35:90:55:91:3a:08
Fingerprint (sha256): 55:18:ab:f4:a7:36:28:c9:90:d4:92:b7:fd:0e:e3:5f:ed:4e:21:b7:19:e3:b9:c9:ea:6a:58:1e:62:e0:e9:10

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

Revocation information

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

Check the revocation status for certificate www.yuka.io

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.yuka.io

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

www.yuka.io
yuka.io

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www.yuka.io

Certificate

The complete raw certificate details for www.yuka.io in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3U9zTSMD596nJv3edlr1
zCq2l1Um1zofVG3vq2v+OfDhlzgqt/dwUfnMzLbg/6mPUsnrLHIVQEF9vVzLkObb
25Jro3SxkRTYHN1ySaqz8uWfb4SpS+0uQ3x8GR118Ly2Hb6w0pQ7XTp3VFq+Krhb
kPxgkJyF6UEbCQJmZs97KHxrcQDU8x4QWzk/eiLs4Ei88lXTiqsGgDTqnrl4F850
GzsxI3tX9RuRO1QreNOJYOiohnPTMiKJROQ5GpTvQC3IX++yKLlr/uCRlegd6ICY
AUW+nCZhZE2KBJblAqSlsezHWVv7fbwacCa9PPT8UYrAXouQIGOl2Mh7Pc+Izn/0
HwIDAQAB
-----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 412004757182849179468774079396229118248758
 . . . . . . . . [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 2023-11-25 15:55:04 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-02-23 15:55:03 +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 'www.yuka.io'
 . . . . . . . . [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 27937843847850941430678786575389264614238791819784728715302333483478082296174321741276443585089910125019396383366621656175590793315700238787226908039328221098577473425529528248473166345756703296272219906582526508587331698287545186602787519767746832708649397479600667451130919823587533634586020793466400015540362830845269961940856440478607913912046223535427410812042769042552910045090716838050971786966895690204278239822730948467966176291555836503664245082665069041770675039266488753747490146245931981651306522663255147878207524234746684329241428441740110936498682540668392986893094563962892715070748995217406346392607
 . . . . . . . . . . . . . . . . . . . . [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)
							91dbd23cbc250a77adea9a7be13d59b1b97c966e
 . . . . . . . . . . . . . . . . [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 (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.yuka.io'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yuka.io'
 . . . . . . . . . . . . . . . . [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 (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f000750048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018c0767fbe50000040300463044022034b8d35d1a773d28e17463b492076101f0fee5b5f76f8034fbb88d222f23e1d202203c4ec3137fc0deb29d898058db759560e39164904952ce6437a3b9dbd74b906000770076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018c0767fc3100000403004830460221008c23db37f57cb581af00ea2f6c52e54d4eae04e9d2079dc5474a8aaac9f806d9022100b32a925c728e9e45be8dc9fb81cb97069ff6fe4b5af021f71b27d72533725d6d
 . . . . [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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