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## Class X509CertificateGenerator

    Object
       |
       +--X509CertificateGenerator

class X509CertificateGenerator

Class implementing a X.509 certificate generator
Defined in x509certificategenerator.js

Field Summary
`Object` | `crypto`
`Object` | `encodeECDomainParameter`
`<static> Object` | `cRLSign`
`<static> Object` | `dataEncipherment`
`<static> Object` | `decipherOnly`
`<static> Object` | `digitalSignature`
`<static> Object` | `encipherOnly`
`<static> Object` | `keyAgreement`
`<static> Object` | `keyCertSign`
`<static> Object` | `keyEncipherment`
`<static> Object` | `nonRepudiation`

Constructor Summary
`X509CertificateGenerator(<Crypto> crypto)` Create a X.509 certificate generator.

Method Summary
`void` | `addAuthorityKeyIdentifierExtension(<Key> publicKey)` Adds the authority public key identifier extension based on the issuers key.
`void` | `addBasicConstraintsExtension(<Boolean> cA, <Number> pathLenConstraint)` Adds the BasicConstraints extension.
`void` | `addCRLDistributionPointURL(<String[]> url)` Adds the CRL distribution point URLs.
`void` | `addExtendedKeyUsages(<String[]> oids, <Boolean> critical)` Adds the extended key usage extension
`void` | `addExtension(<String> extnID, <Boolean> critical, extnValue)` Adds an extension to the certificate
`void` | `addKeyUsageExtension(flags)` Adds the key usage extension.
`void` | `addSubjectKeyIdentifierExtension()` Adds the subject public key identifier extension based on the certificates subject key.
`X509` | `generateX509Certificate(privateKey)` Generates the certificate.
`ASN1` | `getExtensions()` Gets the certificate extension as TLV object
`ASN1` | `getIssuer()` Gets the issuer name as TLV object
`ASN1` | `getSignatureAlgorithm()` Gets the signature algorithm TLV object
`ASN1` | `getSubject()` Gets the subject name as TLV object
`ASN1` | `getSubjectPublicKeyInfo()` Gets the subject's public key as TLV object
`ASN1` | `getTbsCertificate()` Gets the part of the certificate that will be signed
`ASN1` | `getValidity()` Gets the certificate validity as TLV object
`void` | `reset()` Resets all internal state variables.
`void` | `setIssuer(<Object> issuer)` Sets the isser name.
`void` | `setNotAfter(date)` Sets the expiration date for the certificate.
`void` | `setNotBefore(date)` Sets the effective date for the certificate.
`void` | `setPublicKey(<Key> publicKey)` Sets the subjects public key
`void` | `setSerialNumber(<ByteString> serialNumber)` Sets the serial number.
`void` | `setSignatureAlgorithm(<Number> alg)` Sets the signature algorithm.
`void` | `setSubject(<Object> subject)` Sets the subject name.

Field Detail

### crypto

    Object crypto

### encodeECDomainParameter

    Object encodeECDomainParameter

### cRLSign

    <static> Object cRLSign

### dataEncipherment

    <static> Object dataEncipherment

### decipherOnly

    <static> Object decipherOnly

### digitalSignature

    <static> Object digitalSignature

### encipherOnly

    <static> Object encipherOnly

### keyAgreement

    <static> Object keyAgreement

### keyCertSign

    <static> Object keyCertSign

### keyEncipherment

    <static> Object keyEncipherment

### nonRepudiation

    <static> Object nonRepudiation

Constructor Detail

### X509CertificateGenerator

    X509CertificateGenerator(<Crypto> crypto)

Create a X.509 certificate generator.

Parameters:

`crypto` - the crypto provider to use for signing operations

Method Detail

### addAuthorityKeyIdentifierExtension

    void addAuthorityKeyIdentifierExtension(<Key> publicKey)

Adds the authority public key identifier extension based on the issuers key.

The key identifier is calculated as SHA-1 hash over the contents of the issuer public key (Without tag, length and number of unused bits.

Parameters:

`publicKey` - the authority subject key

### addBasicConstraintsExtension

    void addBasicConstraintsExtension(<Boolean> cA, <Number> pathLenConstraint)

Adds the BasicConstraints extension.

Parameters:

`cA` - the certificate belongs to a CA

`pathLenConstraint` - the maximum number of subordinate CA certificates

### addCRLDistributionPointURL

    void addCRLDistributionPointURL(<String[]> url)

Adds the CRL distribution point URLs.

Parameters:

`url` - a list of URLs

### addExtendedKeyUsages

    void addExtendedKeyUsages(<String[]> oids, <Boolean> critical)

Adds the extended key usage extension

Parameters:

`oids` - the list of object identifier names

`critical` - the extension is critical

### addExtension

    void addExtension(<String> extnID, <Boolean> critical, extnValue)

Adds an extension to the certificate

The structure is defined as:

        Extension  ::=  SEQUENCE  {
            extnID      OBJECT IDENTIFIER,
            critical    BOOLEAN DEFAULT FALSE,
            extnValue   OCTET STRING
                        -- contains the DER encoding of an ASN.1 value
                        -- corresponding to the extension type identified
                        -- by extnID
            }

Parameters:

`extnID` - the extensions object identifier

`critical` - the extension is critical

`the` - extension value as ByteString

### addKeyUsageExtension

    void addKeyUsageExtension(flags)

Adds the key usage extension.

The following flags are defined:

     PKIXCommon.digitalSignature = 0x0080;
     PKIXCommon.nonRepudiation   = 0x0040;
     PKIXCommon.keyEncipherment  = 0x0020;
     PKIXCommon.dataEncipherment = 0x0010;
     PKIXCommon.keyAgreement     = 0x0008;
     PKIXCommon.keyCertSign      = 0x0004;
     PKIXCommon.cRLSign          = 0x0002;
     PKIXCommon.encipherOnly     = 0x0001;
     PKIXCommon.decipherOnly     = 0x8000;

Parameters:

`the` - key usage flags as combination of the flags defined above.

### addSubjectKeyIdentifierExtension

    void addSubjectKeyIdentifierExtension()

Adds the subject public key identifier extension based on the certificates subject key.

The key identifier is calculated as SHA-1 hash over the contents of the subject public key (Without tag, length and number of unused bits.

### generateX509Certificate

    X509 generateX509Certificate(privateKey)

Generates the certificate.

Returns:

the generated certificate

### getExtensions

    ASN1 getExtensions()

Gets the certificate extension as TLV object

Returns:

the certificate extensions

### getIssuer

    ASN1 getIssuer()

Gets the issuer name as TLV object

Returns:

the issuer RDNSequence

### getSignatureAlgorithm

    ASN1 getSignatureAlgorithm()

Gets the signature algorithm TLV object

Returns:

the signature algorithm object

### getSubject

    ASN1 getSubject()

Gets the subject name as TLV object

Returns:

the issuer RDNSequence

### getSubjectPublicKeyInfo

    ASN1 getSubjectPublicKeyInfo()

Gets the subject's public key as TLV object

Returns:

the subject's public key info

### getTbsCertificate

    ASN1 getTbsCertificate()

Gets the part of the certificate that will be signed

Returns:

the TBSCertificate part

### getValidity

    ASN1 getValidity()

Gets the certificate validity as TLV object

Returns:

the certificates validity

### reset

    void reset()

Resets all internal state variables.

### setIssuer

    void setIssuer(<Object> issuer)

Sets the isser name.

The issuer name must be a JavaScript object containing the properties:

- C - the country
- O - the organization
- OU - the organization unit
- CN - the common name

Example:

    	var issuer = { C:"UT", O:"ACME Corporation", CN:"Test-CA" };

Parameters:

`issuer` - the issuer name

### setNotAfter

    void setNotAfter(date)

Sets the expiration date for the certificate.

Parameters:

`String` - or Date} date the date in format YYMMDDHHMMSSZ

### setNotBefore

    void setNotBefore(date)

Sets the effective date for the certificate.

Parameters:

`String` - or Date} date the date in format YYMMDDHHMMSSZ

### setPublicKey

    void setPublicKey(<Key> publicKey)

Sets the subjects public key

The methods accepts ECC and RSA Public Keys.

Parameters:

`publicKey` - the subjects public key

### setSerialNumber

    void setSerialNumber(<ByteString> serialNumber)

Sets the serial number.

Parameters:

`serialNumber` - the serial number for the certificate

### setSignatureAlgorithm

    void setSignatureAlgorithm(<Number> alg)

Sets the signature algorithm. Currently only Crypto.RSA is supported

Parameters:

`alg` - the signature algorithm, only Crypto.RSA supported

### setSubject

    void setSubject(<Object> subject)

Sets the subject name.

The subject name must be a JavaScript object containing the properties:

- C - the country
- O - the organization
- OU - the organization unit
- CN - the common name

Example:

    	var subject = { C:"UT", O:"ACME Corporation", CN:"Joe Doe" };

Parameters:

`subject` - the subject name

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Documentation generated by JSDoc on Mon Feb 23 11:18:44 2026