tofu.vn

Issued by R3

About this certificate

This digital certificate with serial number 03:dc:88:22:8d:5c:18:d2:2e:24:6a:8d:66:83:98:67:72:f0 was issued on by Let's Encrypt.

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=tofu.vn

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate will expire on

Certificate Details

Serial Number (hex): 03:dc:88:22:8d:5c:18:d2:2e:24:6a:8d:66:83:98:67:72:f0
Serial Number (int): 336379932930523567443424699032917214982896
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: dd:f2:f3:0e:ba:7c:95:c7:08:95:7f:08:d0:c7:52:b3:83:7f:c8:de
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): dd:7e:e0:86:8c:f0:ed:66:e8:d1:12:23:80:dc:cb:e2:31:69:c8:65
Fingerprint (sha256): 23:86:1c:da:6d:54:d6:36:65:1c:9b:9a:9f:29:48:42:82:99:39:05:e3:c5:08:7e:c5:ee:72:11:20:d7:58:6e

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

Revocation information

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

Check the revocation status for certificate tofu.vn

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for tofu.vn

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

tofu.vn

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tofu.vn
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www.keepelectronics.com

Certificate

The complete raw certificate details for tofu.vn in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtVXYumNGe7EipfF3vsfA
gYJ8QPEonzVhKI3oEjyIvq1khCQQ+S2EI/+NCoEfxYb/CAAZnFUCIfuzF4tqBuT4
aXc3zGEUj27M72fQ7PdX9b09Fl/wfhChvxZQDVuuLtQZXEda4Ejl9rqHHwxC9qbR
oQnKv+cnO96y8SCtg3Qb1D885VRJ0WX7MbEGRG3ya5hrF486T5Y8WuRlI+fnTPmK
vxMzMTpLFxszvWeCVgwd32FYFo+cpGk6CRmhPB+kEJgB/Tan1FbGFCzTJhwzAND9
sQgZiRp+SmqrdoSF8F9n+5TppMXs+/EE57VKY2WjtNH1XRiQFuBpwxYwxuAySYou
JQIDAQAB
-----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 336379932930523567443424699032917214982896
 . . . . . . . . [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 2024-04-27 03:47:12 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-07-26 03:47:11 +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 'tofu.vn'
 . . . . . . . . [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 22891465732138791753179111006184975304421542207157656322956715330648034991591902182383009587958129625101683332191353730903916687321394670689067825595058483721110738087373010740406494578602794567540907093740140789789211775311740933980048649999098069225797709286667148469721241086305633938326209507572246892390184477898554293667695105673038427317856191826547838671739782447572009267533568037583951714875834708943857034931979772362106813622717674281310483164938420704033777504288554681616395417450431424405587186147494241787974190355885732543011724647486155188478309288917424364511704107442030642222246988137451848609317
 . . . . . . . . . . . . . . . . . . . . [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)
							ddf2f30eba7c95c708957f08d0c752b3837fc8de
 . . . . . . . . . . . . . . . . [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 (11 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'tofu.vn'
 . . . . . . . . . . . . . . . . [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)
							00f000760048b0e36bdaa647340fe56a02fa9d30eb1c5201cb56dd2c81d9bbbfab39d884730000018f1de0f3b50000040300473045022065a633351d57caff54af66040cb9579807a71996e103e8778af972e205d876e6022100cd65530e92cdc36f74f198f6183c59607b4399dd25b06bbd650213246a67f4a80076003f174b4fd7224758941d651c84be0d12ed90377f1f856aebc1bf2885ecf8646e0000018f1de0f3bb00000403004730450220686c0dc7ba32955d0068593f10343260ed62f10f8c952663c1c61448ecd1059d022100d2febd0321959aaa09333fadfc8be13e9b1ca387ad328c5eb58dec8ef02d26d1
 . . . . [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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