cychien.tw

Issued by R3

About this certificate

This digital certificate with serial number 04:db:4f:1d:bf:ed:a1:f9:27:e1:8a:0a:2b:fd:f1:13:e4:b2 was issued on by Let's Encrypt.

With 9 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=cychien.tw

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 04:db:4f:1d:bf:ed:a1:f9:27:e1:8a:0a:2b:fd:f1:13:e4:b2
Serial Number (int): 423076145563769853059728041821765169833138
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: d9:0c:4f:dc:f2:1e:eb:40:2b:4f:2f:83:a1:3f:5c:fe:97:f6:9c:ed
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): ff:33:4a:96:a1:fb:3c:8e:6c:02:93:7e:4f:56:b8:86:64:06:ed:ae
Fingerprint (sha256): ae:44:b8:b1:dd:2e:ba:35:b8:04:bf:90:4d:98:9f:28:07:09:d9:1d:44:b5:83:42:01:65:07:50:22:3d:bf:7c

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

Revocation information

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

Check the revocation status for certificate cychien.tw

9

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for cychien.tw

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

*.cychien.tw
broso.synology.me
cychien.tw
ds1511.broso.synology.me
ds1819.broso.synology.me
ds3622.broso.synology.me
ds918.broso.synology.me
photo.broso.synology.me
sa6400.broso.synology.me

Other certificates including the domain name cychien.tw

(limited to 100 certificates)
cychien.tw
cychien.tw
cychien.tw
cychien.tw

Certificate

The complete raw certificate details for cychien.tw in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtcING6bseF6AcJ9awKZR
r7MYmVswW3+3C/VA/sAM/1shuQ+Y5GXb9EKfVXmq9tyARSkB3Db3IHpTmBnI1M7L
axbGSsH77u80kN0CQt6VLcvsEps8oCtpcdfuUWJOg+2mWYxH3d1Dbcri8TNBRJrK
8BzfkUvxVw12TuCdWSFKuAB4ZGYcyfruZirSCMwNVsCmfXxvxoLhcpuqRnjzkQFn
xQLz+XV4h6QYK8aC2Yb8US2sel9LIWUZeeMW5mzYdlVvSGQtxAa5R/mld9VpmSpJ
K2+N/tE+YVTQ0ZKUnSRMnQ7Elb3pPTiqJPWWrtETqvy0QUOK9UvWGxz7RIatQq2K
+QIDAQAB
-----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 423076145563769853059728041821765169833138
 . . . . . . . . [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 2024-04-14 06:37:36 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-13 06:37:35 +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 'cychien.tw'
 . . . . . . . . [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 22944823413571131864586170816040946677112864653571967177503146144035362696050524308537062675964655623157254587817785731618604449980943283760852242894742029715765535695778664877457594039245217797190554241015754950199662582957342766225566900580902344496700928435135263589174439697524454125286140908737960936772787767146342778868109338641903999829464613689692161630178415362759015230950822061841915620937442060288908252275903801169733851779197630318985950106652465307262556475199319157572100170749790654876429911205110015501825664198414941344076690232981776510330253332612907741826289992875338613770156800244517373315833
 . . . . . . . . . . . . . . . . . . . . [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)
							d90c4fdcf21eeb402b4f2f83a13f5cfe97f69ced
 . . . . . . . . . . . . . . . . [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 (202 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.cychien.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'broso.synology.me'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cychien.tw'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ds1511.broso.synology.me'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ds1819.broso.synology.me'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ds3622.broso.synology.me'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ds918.broso.synology.me'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'photo.broso.synology.me'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'sa6400.broso.synology.me'
 . . . . . . . . . . . . . . . . [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)
							00f20077003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018edb8a495a0000040300483046022100f4e73447bf6f650466caca83a52ea257d710fadfdd7d525ea95215d6953c7162022100ef604c8d27c0ddd350788578d31621b5669073409a961a1ce4649f87ae35aa4d007700eecdd064d5db1acec55cb79db4cd13a23287467cbcecdec351485946711fb59b0000018edb8a4955000004030048304602210095b557560c0b414e45b312d96004c48470ce5d1c965d330daecf5522744f958c022100d5c177b0d8338a342640f4540d51325051d1ecd4f09d86fb58f9e371f4bda903
 . . . . [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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