www.yuyusystem.com

Issued by R3

About this certificate

This digital certificate with serial number 03:09:95:01:7c:cd:3f:bc:e7:b4:50:0a:92:be:17:27:16:50 was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate is currently not expired, we haven't checked the revocation status of this certificate but you can do this simply on revocationcheck.com. 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.yuyusystem.com

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:09:95:01:7c:cd:3f:bc:e7:b4:50:0a:92:be:17:27:16:50
Serial Number (int): 264597461792518287207029358882485870990928
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 55:e4:d8:3f:9c:08:84:3e:be:0c:9d:ab:82:a4:7d:89:bc:8d:e0:d5
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 53:15:8b:ea:c5:72:e0:4e:08:4d:6a:33:69:5d:1b:7c:92:59:54:99
Fingerprint (sha256): c9:f0:87:06:f7:ca:88:99:64:8b:14:be:a4:77:1d:30:14:c7:d8:7e:15:2c:03:fa:6c:ff:c2:c2:ff:07:5b:6a

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

Revocation information

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

Check the revocation status for certificate www.yuyusystem.com

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.yuyusystem.com

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.yuyusystem.com
yuyusystem.com

Other certificates including the domain name yuyusystem.com

(limited to 100 certificates)
testiapp.indoors.fi
dorseywelding.com
www.ubique.dev
app.yuyusystem.com
neatwithnat.com
www.isasc.net
www.effekt-raad.dk
www.kaptain.art
getalvira.com
www.yuyusystem.com
www.yuyusystem.com
shalitha.com

Certificate

The complete raw certificate details for www.yuyusystem.com in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy71VphyHEg3x/21hwp0K
/g2m3a3+84vMsq2yEapBTJlK47znwcsXlStbA6WDpRd/+NdYf1rMSQQ9cN8tMQ0+
F1M+fwYu6OSOEQeJtUJTnECVuq/PWOvt8Kp0YdHCApvnEsjq7HF/TXSQXo08+hKL
4NI6xOtY8fNbhg3EhwR2imCGloJshmk0igIucCz/cbguWB17oRjocc5pC+aVAPHa
1wT7FozCXV7pxoS2OCpFsfNfqUZcXV+v49GwNu+L36VRJoDCzJGExqMDfwJPFCsA
6BWdysSm7+LUA6+lvnGD/PJJKJLaJ3kVZkqroB87cTO2am+S4H9hnJ3lvJCoM90I
UQIDAQAB
-----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 264597461792518287207029358882485870990928
 . . . . . . . . [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 2024-05-07 08:07:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-08-05 08:07:53 +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.yuyusystem.com'
 . . . . . . . . [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 25719740262296941300839660100068546334044267305373924570425554246545589635726529846860916669028949421744609733735858764127214315282399888179336649425084046735957791710558373242551237499826084582963890240761163445631830644580798900666435584559427627164403138091047662357896781673867504275289972150363440184762740880282703129573582875004150778105964978026753548070592714720066244742102374871377192939801637593791790901388985515853096792870747540369194673052336953365777496432752678361818816916817887277370065271095998868837081726241432079070803589866764425704202485546276244719912183670090638895854681520217591614605393
 . . . . . . . . . . . . . . . . . . . . [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)
							55e4d83f9c08843ebe0c9dab82a47d89bc8de0d5
 . . . . . . . . . . . . . . . . [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 (38 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.yuyusystem.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'yuyusystem.com'
 . . . . . . . . . . . . . . . . [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 (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f10076003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018f524f37860000040300473045022100af73490aaf3bff65314e789e11feaed5eee3917c3dc74136e674472b65cc81b602203db2c2f5e5015ec2f620eb17f4d070b83941aa635d74e624c9ed2e52bb779cf10077001998107109f0d6522e3080d29e3f64bb836e28ccf90f528eeedfce4a3f16b4ca0000018f524f378f000004030048304602210085cfcdaaa52afd74ff4841845edb3746053fd2aa3136c3b9271ff070a716dc5f022100dee153f3ef157d89e05949fb9a1f73aa2efafb8b73003155e949e3bd82795111
 . . . . [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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