cashslide.co.kr

Issued by GTS CA 1D4

About this certificate

This digital certificate with serial number 21:f4:2b:ad:fd:e8:b6:a9:09:2c:56:f6:09:b4:c5:a9 was issued on by Google Trust Services LLC.

With 8 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:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=cashslide.co.kr

Google Trust Services LLC

Organization: Google Trust Services LLC
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 21:f4:2b:ad:fd:e8:b6:a9:09:2c:56:f6:09:b4:c5:a9
Serial Number (int): 45132330223050834600557233456775742889
Serial Number lenght: 126 bits, 16 octets

SubjectKeyId: 93:c7:3d:63:43:d2:9d:c5:cc:02:20:cf:21:b1:91:cc:88:ad:04:a0
AuthorityKeyId: 25:e2:18:0e:b2:57:91:94:2a:e5:d4:5d:86:90:83:de:53:b3:b8:92

Fingerprint (sha1): 5b:81:56:d4:5b:75:32:bf:bb:8b:83:68:c5:91:ca:e9:60:e6:39:cb
Fingerprint (sha256): f6:16:4b:bc:db:43:b9:ee:00:b8:02:24:dd:f5:e1:d4:2e:74:84:48:1b:4d:ba:1b:0e:cd:be:e3:da:56:c2:c4

Issuing Certificate URL: http://pki.goog/repo/certs/gts1d4.der

Revocation information

OCSP Server: http://ocsp.pki.goog/s/gts1d4/UZEI4WfwnFs
CRL Distribution Point: http://crls.pki.goog/gts1d4/8sMM3cbDapY.crl

Check the revocation status for certificate cashslide.co.kr

8

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for cashslide.co.kr

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication

Extensions

10 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

cashslide.co.kr
load.cashslide.co.kr
load2.cashslide.co.kr
load3.cashslide.co.kr
load4.cashslide.co.kr
nbt.cashslide.co.kr
web.cashslide.co.kr
www.cashslide.co.kr

Other certificates including the domain name cashslide.co.kr

(limited to 100 certificates)

Certificate

The complete raw certificate details for cashslide.co.kr in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAroRXeabiXwhaG1jEFuaw
XgoSK4M9kMCXpwYu59eccHW6GgBzAxJYd7W3aeEHax39lm6JWQbDMqs/EBFTu2jJ
yFG/D99YmWxRn7zfPnBkhaqBm5WsNoMPXwMQpOS+ZmntzsQ/awUXTWmcRnP/KvUy
bhiWI74mkcmHkiIIHwV1rI2f6KuAmKR6AX0mnpRzgqNPITN67NwGzS7DouLROUsQ
G4+gH7YRzN0cm66xPW4h284BloJVFnvgb5Me5dk2XFKXh4QBAOV531EHTK9rCtxn
tzDIe20vaCpjA/OD99B4zqw2KqWOwNtJI1t06SrD8ftKWu7Q1Sbhag9kRfMj2AAB
fQIDAQAB
-----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 45132330223050834600557233456775742889
 . . . . . . . . [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 'Google Trust Services LLC'
 . . . . . . . . . . . . [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 'GTS CA 1D4'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-01-31 07:42:43 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-05-01 08:30:32 +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 'cashslide.co.kr'
 . . . . . . . . [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 22030725188647555462901088372560127277000237007200610434573289176127876732734444061611077841997985653384413007694244547838225316234092843912329169819552815636956864556183819830021829899034401933546187612135444220140205795290523084587237798186970451525566423336577315684106031592296031318571529971754690294399052214714651637062885310654736738512462708444727965827665650233820217720084389303395260270131395025544801443058977985846510384330416237867032178482346158479153624689399989640306786123976073003402914644645685185336119524065415192529254890468206913535774539604068893306059321778756576226646616015498707946439037
 . . . . . . . . . . . . . . . . . . . . [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 (12 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: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)
							93c73d6343d29dc5cc0220cf21b191cc88ad04a0
 . . . . . . . . . . . . . . . . [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 25e2180eb25791942ae5d45d869083de53b3b892
 . . . . . . . . . . . . . . . . [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 (108 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.pki.goog/s/gts1d4/UZEI4WfwnFs'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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://pki.goog/repo/certs/gts1d4.der'
 . . . . . . . . . . . . . . . . [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 (174 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'cashslide.co.kr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'load.cashslide.co.kr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'load2.cashslide.co.kr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'load3.cashslide.co.kr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'load4.cashslide.co.kr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'nbt.cashslide.co.kr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'web.cashslide.co.kr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.cashslide.co.kr'
 . . . . . . . . . . . . . . . . [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 (26 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 1.3.6.1.4.1.11129.2.5.3
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31 (cRLDistributionPoints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (53 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://crls.pki.goog/gts1d4/8sMM3cbDapY.crl'
 . . . . . . . . . . . . . . . . [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)
							00f0007600e83ed0da3ef5063532e75728bc896bc903d3cbd1116beceb69e1777d6d06bd6e0000018606fe246b000004030047304502207dc367ea4ada0ccefda174de841260d97c2b440bfa3c4630cdc6a8197c70e17d0221009884ff5e97d2e7c88772639265b46280e4738d3185aba0926aa2dfdd98de80db0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb520000018606fe24a6000004030047304502203cf5d266abe7eb2018f93d7483ca66e3f5858b1eed6201cc7d01ba6829974151022100e123f94da9d18c401b9bfa4f4f4d46f7a95783fa695dea1596473913467579b6
 . . . . [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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