ASN.1 encoder/decoder on JavaScript (v0.3)

Free access counter with access analysis

ASN.1 to Binary is now under construction! Binary to ASN.1 is available.

Input
Output
OID: 0.2.262.1.10.0,extension 0.2.262.1.10.1.1,signature 1.2.840.113549.1.1,pkcs-1 1.2.840.113549.1.1.1,rsaEncryption 1.2.840.113549.1.1.4,md5withRSAEncryption 1.2.840.113549.1.1.5,sha1withRSAEncryption 1.2.840.113549.1.1.6,rsaOAEPEncryptionSET 1.2.840.113549.1.7,pkcs-7 1.2.840.113549.1.7.1,data 1.2.840.113549.1.7.2,signedData 1.2.840.113549.1.7.3,envelopedData 1.2.840.113549.1.7.4,signedAndEnvelopedData 1.2.840.113549.1.7.5,digestedData 1.2.840.113549.1.7.6,encryptedData 1.2.840.113549.1.7.7,dataWithAttributes 1.2.840.113549.1.7.8,encryptedPrivateKeyInfo 1.2.840.113549.1.9.22.1,x509Certificate(for.PKCS.#12) 1.2.840.113549.1.9.23.1,x509Crl(for.PKCS.#12) 1.2.840.113549.1.9.3,contentType 1.2.840.113549.1.9.4,messageDigest 1.2.840.113549.1.9.5,signingTime 2.16.840.1.113730.1,cert-extension 2.16.840.1.113730.1.1,netscape-cert-type 2.16.840.1.113730.1.12,netscape-ssl-server-name 2.16.840.1.113730.1.13,netscape-comment 2.16.840.1.113730.1.2,netscape-base-url 2.16.840.1.113730.1.3,netscape-revocation-url 2.16.840.1.113730.1.4,netscape-ca-revocation-url 2.16.840.1.113730.1.7,netscape-cert-renewal-url 2.16.840.1.113730.1.8,netscape-ca-policy-url 2.23.42.0,contentType 2.23.42.1,msgExt 2.23.42.10,national 2.23.42.2,field 2.23.42.2.0,fullName 2.23.42.2.1,givenName 2.23.42.2.10,amount 2.23.42.2.2,familyName 2.23.42.2.3,birthFamilyName 2.23.42.2.4,placeName 2.23.42.2.5,identificationNumber 2.23.42.2.6,month 2.23.42.2.7,date 2.23.42.2.7.11,accountNumber 2.23.42.2.7.12,passPhrase 2.23.42.2.8,address 2.23.42.3,attribute 2.23.42.3.0,cert 2.23.42.3.0.0,rootKeyThumb 2.23.42.3.0.1,additionalPolicy 2.23.42.4,algorithm 2.23.42.5,policy 2.23.42.5.0,root 2.23.42.6,module 2.23.42.7,certExt 2.23.42.7.0,hashedRootKey 2.23.42.7.1,certificateType 2.23.42.7.2,merchantData 2.23.42.7.3,cardCertRequired 2.23.42.7.5,setExtensions 2.23.42.7.6,setQualifier 2.23.42.8,brand 2.23.42.9,vendor 2.23.42.9.22,eLab 2.23.42.9.31,espace-net 2.23.42.9.37,e-COMM 2.5.29.1,authorityKeyIdentifier 2.5.29.10,basicConstraints 2.5.29.11,nameConstraints 2.5.29.12,policyConstraints 2.5.29.13,basicConstraints 2.5.29.14,subjectKeyIdentifier 2.5.29.15,keyUsage 2.5.29.16,privateKeyUsagePeriod 2.5.29.17,subjectAltName 2.5.29.18,issuerAltName 2.5.29.19,basicConstraints 2.5.29.2,keyAttributes 2.5.29.20,cRLNumber 2.5.29.21,cRLReason 2.5.29.22,expirationDate 2.5.29.23,instructionCode 2.5.29.24,invalidityDate 2.5.29.25,cRLDistributionPoints 2.5.29.26,issuingDistributionPoint 2.5.29.27,deltaCRLIndicator 2.5.29.28,issuingDistributionPoint 2.5.29.29,certificateIssuer 2.5.29.3,certificatePolicies 2.5.29.30,nameConstraints 2.5.29.31,cRLDistributionPoints 2.5.29.32,certificatePolicies 2.5.29.33,policyMappings 2.5.29.34,policyConstraints 2.5.29.35,authorityKeyIdentifier 2.5.29.36,policyConstraints 2.5.29.37,extKeyUsage 2.5.29.4,keyUsageRestriction 2.5.29.5,policyMapping 2.5.29.6,subtreesConstraint 2.5.29.7,subjectAltName 2.5.29.8,issuerAltName 2.5.29.9,subjectDirectoryAttributes 2.5.4.0,objectClass 2.5.4.1,aliasedEntryName 2.5.4.10,organizationName 2.5.4.10.1,collectiveOrganizationName 2.5.4.11,organizationalUnitName 2.5.4.11.1,collectiveOrganizationalUnitName 2.5.4.12,title 2.5.4.13,description 2.5.4.14,searchGuide 2.5.4.15,businessCategory 2.5.4.16,postalAddress 2.5.4.16.1,collectivePostalAddress 2.5.4.17,postalCode 2.5.4.17.1,collectivePostalCode 2.5.4.18,postOfficeBox 2.5.4.18.1,collectivePostOfficeBox 2.5.4.19,physicalDeliveryOfficeName 2.5.4.19.1,collectivePhysicalDeliveryOfficeName 2.5.4.2,knowledgeInformation 2.5.4.20,telephoneNumber 2.5.4.20.1,collectiveTelephoneNumber 2.5.4.21,telexNumber 2.5.4.21.1,collectiveTelexNumber 2.5.4.22.1,collectiveTeletexTerminalIdentifier 2.5.4.23,facsimileTelephoneNumber 2.5.4.23.1,collectiveFacsimileTelephoneNumber 2.5.4.25,internationalISDNNumber 2.5.4.25.1,collectiveInternationalISDNNumber 2.5.4.26,registeredAddress 2.5.4.27,destinationIndicator 2.5.4.28,preferredDeliveryMehtod 2.5.4.29,presentationAddress 2.5.4.3,commonName 2.5.4.31,member 2.5.4.32,owner 2.5.4.33,roleOccupant 2.5.4.34,seeAlso 2.5.4.35,userPassword 2.5.4.36,userCertificate 2.5.4.37,caCertificate 2.5.4.38,authorityRevocationList 2.5.4.39,certificateRevocationList 2.5.4.4,surname 2.5.4.40,crossCertificatePair 2.5.4.41,name 2.5.4.42,givenName 2.5.4.43,initials 2.5.4.44,generationQualifier 2.5.4.45,uniqueIdentifier 2.5.4.46,dnQualifier 2.5.4.47,enhancedSearchGuide 2.5.4.48,protocolInformation 2.5.4.49,distinguishedName 2.5.4.5,serialNumber 2.5.4.50,uniqueMember 2.5.4.51,houseIdentifier 2.5.4.52,supportedAlgorithms 2.5.4.53,deltaRevocationList 2.5.4.55,clearance 2.5.4.58,crossCertificatePair 2.5.4.6,countryName 2.5.4.7,localityName 2.5.4.7.1,collectiveLocalityName 2.5.4.8,stateOrProvinceName 2.5.4.8.1,collectiveStateOrProvinceName 2.5.4.9,streetAddress 2.5.4.9.1,collectiveStreetAddress 2.5.6.0,top 2.5.6.1,alias 2.5.6.10,residentialPerson 2.5.6.11,applicationProcess 2.5.6.12,applicationEntity 2.5.6.13,dSA 2.5.6.14,device 2.5.6.15,strongAuthenticationUser 2.5.6.16,certificateAuthority 2.5.6.17,groupOfUniqueNames 2.5.6.2,country 2.5.6.21,pkiUser 2.5.6.22,pkiCA 2.5.6.3,locality 2.5.6.4,organization 2.5.6.5,organizationalUnit 2.5.6.6,person 2.5.6.7,organizationalPerson 2.5.6.8,organizationalRole 2.5.6.9,groupOfNames 2.5.8,X.500-Algorithms 2.5.8.1,X.500-Alg-Encryption 2.5.8.1.1,rsa 2.54.1775.2,hashedRootKey 2.54.1775.3,certificateType 2.54.1775.4,merchantData 2.54.1775.5,cardCertRequired 2.54.1775.7,setQualifier 2.54.1775.99,set-data

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Usage

Input ASN.1 object into [Input] field.
You can choose one of these formats:
- 30 03 02 01 ff .. (HEX string)
- 30030201ff.. (HEX string, without space)
- 30 03 02 01 FF .. (HEX string, upper case)
- 30030201FF.. (HEX string, without space, upper case)
- Q2hhbmdlIHRoZSBzY3J.. (BASE64)
Any carriage-returns, line-feeds, and tabs can be used instead of space. They'll be ignored.
(In case of HEX string with space) Each token must have 2 digits even if being less than 16.
Press [Convert] button to show ASN.1 dump in [Output] field.
If you describe what each OID numbers mean at [OID] field, those descriptions will be appended to OID number in ASN.1 dump.
If you are using Internet Explorer on Windows, press [Send to Clipboard] button to fetch the clipboard your result from [Output] field.

How to use this off line?

Save this page as an HTML file. If this page is now shown in the frame, open in the new window and go on.
Download script file and save it at the same folder as the HTML above.
Open the HTML by Internet Explorer or Mozilla (including Firefox). Now it can work as same as on line.

History

23 Mar, 2004 (v0.3)

The bug has been fixed; "The previous VALUE field is reused in case VALUE has zero length."
OID description is equiped.
Now it can run on Mozilla Firefox 0.8, as well as Internet Explorer 5.

2 Apr, 2003 (v0.2)

Decoding routine for BASE64 has been equiped.

28 Mar, 2003 (v0.1)

Strange indent for beginning of sequencial object has been deleted.
v0.0 couldn't process ASN.1 when the length of LENGTH field is longer than 1 octet. This bug has been fixed in this version(v0.1).
These problems were found by Mr.(or Ms.) T @ OCN. Japan

someday of 2002 (v0.0)