New-SelfSignedCertificate

Reference

Module:: pki

Creates a new self-signed certificate for testing purposes.

Syntax

New-SelfSignedCertificate
   [-SecurityDescriptor <FileSecurity>]
   [-TextExtension <String[]>]
   [-Extension <X509Extension[]>]
   [-HardwareKeyUsage <HardwareKeyUsage[]>]
   [-KeyUsageProperty <KeyUsageProperty[]>]
   [-KeyUsage <KeyUsage[]>]
   [-KeyProtection <KeyProtection[]>]
   [-KeyExportPolicy <KeyExportPolicy[]>]
   [-KeyLength <Int32>]
   [-KeyAlgorithm <String>]
   [-SmimeCapabilities]
   [-ExistingKey]
   [-KeyLocation <String>]
   [-SignerReader <String>]
   [-Reader <String>]
   [-SignerPin <SecureString>]
   [-Pin <SecureString>]
   [-KeyDescription <String>]
   [-KeyFriendlyName <String>]
   [-Container <String>]
   [-Provider <String>]
   [-CurveExport <CurveParametersExportType>]
   [-KeySpec <KeySpec>]
   [-Type <CertificateType>]
   [-FriendlyName <String>]
   [-NotAfter <DateTime>]
   [-NotBefore <DateTime>]
   [-SerialNumber <String>]
   [-Subject <String>]
   [-DnsName <String[]>]
   [-SuppressOid <String[]>]
   [-HashAlgorithm <String>]
   [-AlternateSignatureAlgorithm]
   [-TestRoot]
   [-Signer <Certificate>]
   [-CloneCert <Certificate>]
   [-CertStoreLocation <String>]
   [-WhatIf]
   [-Confirm]
   [<CommonParameters>]

Description

The New-SelfSignedCertificate cmdlet creates a self-signed certificate for testing purposes. Using the CloneCert parameter, a test certificate can be created based on an existing certificate with all settings copied from the original certificate except for the public key. The cmdlet creates a new key of the same algorithm and length.

Delegation may be required when using this cmdlet with Windows PowerShell remoting and changing user configuration.

Examples

EXAMPLE 1

$params = @{
    DnsName = 'www.fabrikam.com', 'www.contoso.com'
    CertStoreLocation = 'Cert:\LocalMachine\My'
}
New-SelfSignedCertificate @params

This example creates a self-signed SSL server certificate in the computer MY store with the subject alternative names www.fabrikam.com and www.contoso.com and the Subject and Issuer name set to www.fabrikam.com.

EXAMPLE 2

Set-Location -Path 'Cert:\LocalMachine\My'
PS Cert:\LocalMachine\My> $OldCert = (Get-ChildItem -Path E42DBC3B3F2771990A9B3E35D0C3C422779DACD7)
PS Cert:\LocalMachine\My> New-SelfSignedCertificate -CloneCert $OldCert

This example creates a copy of the certificate specified by the CloneCert parameter and puts it in the computer MY store.

EXAMPLE 3

$params = @{
    Type = 'Custom'
    Subject = '[email protected],CN=Patti Fuller'
    TextExtension = @(
        '2.5.29.37={text}1.3.6.1.5.5.7.3.4',
        '2.5.29.17={text}[email protected]&[email protected]' )
    KeyAlgorithm = 'RSA'
    KeyLength = 2048
    SmimeCapabilities = $true
    CertStoreLocation = 'Cert:\CurrentUser\My'
}
New-SelfSignedCertificate @params

This example creates a self-signed S/MIME certificate in the user MY store. The certificate uses the default provider, which is the Microsoft Software Key Storage Provider. The certificate uses an RSA asymmetric key with a key size of 2048 bits. This certificate has the subject alternative names of [email protected] as RFC822 and [email protected] as Principal Name.

This command does not specify the NotAfter parameter. Therefore, the certificate expires in one year.

EXAMPLE 4

$params = @{
    Type = 'Custom'
    Subject = 'CN=Patti Fuller,OU=UserAccounts,DC=corp,DC=contoso,DC=com'
    TextExtension = @(
        '2.5.29.37={text}1.3.6.1.5.5.7.3.2',
        '2.5.29.17={text}[email protected]' )
    KeyUsage = 'DigitalSignature'
    KeyAlgorithm = 'RSA'
    KeyLength = 2048
    CertStoreLocation = 'Cert:\CurrentUser\My'
}
New-SelfSignedCertificate @params

This example creates a self-signed client authentication certificate in the user MY store. The certificate uses the default provider, which is the Microsoft Software Key Storage Provider. The certificate uses an RSA asymmetric key with a key size of 2048 bits. The certificate has a subject alternative name of [email protected].

The certificate expires in one year.

EXAMPLE 5

$params = @{
    Type = 'Custom'
    Subject = 'CN=Patti Fuller,OU=UserAccounts,DC=corp,DC=contoso,DC=com'
    TextExtension @(
        '2.5.29.37={text}1.3.6.1.5.5.7.3.2',
        '2.5.29.17={text}[email protected]' )
    KeyUsage = 'DigitalSignature'
    KeyAlgorithm = 'ECDSA_nistP256'
    CurveExport = 'CurveName'
    CertStoreLocation = 'Cert:\CurrentUser\My'
}
New-SelfSignedCertificate @params

This example creates a self-signed client authentication certificate in the user MY store. The certificate uses the default provider, which is the Microsoft Software Key Storage Provider. The certificate uses an elliptic curve asymmetric key and the curve parameters nist256, which creates a 256-bit key. The subject alternative name is [email protected].

The certificate expires in one year.

EXAMPLE 6

$params = @{
    Type = 'Custom'
    Provider = 'Microsoft Platform Crypto Provider'
    Subject = 'CN=Patti Fuller'
    TextExtension = @(
        '2.5.29.37={text}1.3.6.1.5.5.7.3.2',
        '2.5.29.17={text}[email protected]' )
    KeyExportPolicy = 'NonExportable'
    KeyUsage = 'DigitalSignature'
    KeyAlgorithm = 'RSA'
    KeyLength = 2048
    CertStoreLocation = 'Cert:\CurrentUser\My'
}
New-SelfSignedCertificate @params

This example creates a self-signed client authentication certificate in the user MY store. The certificate uses the Microsoft Platform Crypto Provider. This provider uses the Trusted Platform Module (TPM) of the device to create the asymmetric key. The certificate uses an RSA asymmetric key with a key size of 2048 bits. The key is not exportable. The subject alternative name is [email protected]. The certificate expires in one year.

EXAMPLE 7

$params = @{
    Type = 'Custom'
    Container = 'test*'
    Subject = 'CN=Patti Fuller'
    TextExtension = @(
        '2.5.29.37={text}1.3.6.1.5.5.7.3.2',
        '2.5.29.17={text}[email protected]' )
    KeyUsage = 'DigitalSignature'
    KeyAlgorithm = 'RSA'
    KeyLength = 2048
    NotAfter = (Get-Date).AddMonths(6)
}
New-SelfSignedCertificate @params

This example creates a self-signed client authentication certificate in the user MY store. The certificate uses the default provider, which is the Microsoft Software Key Storage Provider. The certificate uses an RSA asymmetric key with a key size of 2048 bits. The subject alternative name is [email protected].

This command specifies a value for NotAfter. The certificate expires in six months.

EXAMPLE 8

$params = @{
    Type = 'Custom'
    Subject = '[email protected],CN=Patti Fuller'
    TextExtension = @(
        '2.5.29.37={text}1.3.6.1.5.5.7.3.4',
        '2.5.29.17={text}[email protected]&[email protected]' )
    KeyAlgorithm = 'RSA'
    KeyLength = 2048
    SmimeCapabilities = $true
    CertStoreLocation = 'Cert:\CurrentUser\My'
}
New-SelfSignedCertificate @params

This command does not specify the NotAfter parameter. Therefore, the certificate expires in one year.

EXAMPLE 9

$params = @{
    Subject = 'localhost'
    TextExtension = @('2.5.29.17={text}DNS=localhost&IPAddress=127.0.0.1&IPAddress=::1')
}
New-SelfSignedCertificate @params

This example creates a self-signed SSL server certificate with Subject and Issuer name set to localhost and with subject alternative name set to IPAddress 127.0.0.1 and ::1 via TextExtension.

Parameters

-AlternateSignatureAlgorithm

Indicates that this cmdlet uses RSA-PSS (PKCSv2.1) or an elliptic curve cryptography (ECC) equivalent. If you do not specify this parameter, the cmdlet uses the default, RSA-PSS (PKCSv1.5) or an ECC equivalent.

Type:	SwitchParameter
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-CertStoreLocation

Specifies the certificate store in which to store the new certificate. If the current path is Cert:\CurrentUser or Cert:\CurrentUser\My, the default store is Cert:\CurrentUser\My. If the current path is Cert:\LocalMachine or Cert:\LocalMachine\My, the default store is Cert:\LocalMachine\My. Otherwise, you must specify Cert:\CurrentUser\My or Cert:\LocalMachine\My for this parameter. This parameter does not support other certificate stores.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-CloneCert

Identifies the certificate to copy when creating a new certificate. The certificate being cloned can be identified by an X509 certificate or the file path in the certificate provider. When this parameter is used, all fields and extensions of the certificate will be inherited except the NotAfter and NotBefore fields and the public key. A new key of the same algorithm and length will be created. The default validity period will be the same as the certificate to copy, except that the NotBefore field will be set to ten minutes in the past.

Type:	Microsoft.CertificateServices.Commands.Certificate
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	True
Accept wildcard characters:	False

-Confirm

Prompts you for confirmation before running the cmdlet.

Type:	SwitchParameter
Aliases:	cf
Position:	Named
Default value:	False
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Container

Specifies the name of the container in which this cmdlet stores the key for the new certificate.

When you create a key, a trailing asterisk (*) indicates that the rest of the container name string is a prefix. An appended GUID string makes the container name unique.

When you use an existing key, the container name must identify an existing key. You may also have to specify the provider.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-CurveExport

Specifies how the public key parameters for an elliptic curve key are represented in the new certificate. The acceptable values for this parameter are:

CurveParameters
CurveName
None

The default value, None, indicates that this cmdlet uses the default value from the underlying key storage provider (KSP). This parameter is not supported with the RSA algorithm or with cryptographic service providers (CSPs).

Type:	Microsoft.CertificateServices.Commands.CurveParametersExportType
Accepted values:	None, CurveParameters, CurveName
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-DnsName

Specifies one or more DNS names to put into the subject alternative name extension of the certificate when a certificate to be copied is not specified via the CloneCert parameter. The first DNS name is also saved as the Subject Name. If no signing certificate is specified, the first DNS name is also saved as the Issuer Name.

Type:	String[]
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-ExistingKey

Indicates that this cmdlet uses an existing key. If you do not specify this parameter, this cmdlet creates a new key. Creating a certificate from an existing key creates a new key with a new container.

When you use an existing key, specify values for the Container parameter, the Provider parameter, and the CertStoreLocation parameter. CertStoreLocation determines the context. The context is user or computer.

Type:	SwitchParameter
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Extension

Specifies an array of certificate extensions, as X509Extension objects, that this cmdlet includes in the new certificate.

Type:	X509Extension[]
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-FriendlyName

Specifies a friendly name for the new certificate.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-HardwareKeyUsage

Specifies how a hardware key associated with the new certificate may be used. This parameter applies only when you specify the Microsoft Platform Crypto Provider. The acceptable values for this parameter are:

None
SignatureKey
EncryptionKey
GenericKey
StorageKey
IdentityKey

The default value, None, indicates that this cmdlet uses the default value from the underlying KSP.

Type:	Microsoft.CertificateServices.Commands.HardwareKeyUsage[]
Accepted values:	None, SignatureKey, EncryptionKey, GenericKey, StorageKey, IdentityKey
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-HashAlgorithm

Specifies the name of the hash algorithm to use to sign the new certificate. The default hash algorithm depends on the provider that stores the private key used to sign the new certificate.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyAlgorithm

Specifies the name of the algorithm that creates the asymmetric keys that are associated with the new certificate. Available asymmetric key algorithms are RSA and Elliptic Curve Digital Signature Algorithms (ECDSA).

The elliptic curve algorithm syntax is the following:

ECDSA_{curvename}

To obtain a value for {curvename}, use the certutil -displayEccCurve command.

Valid curve names contain a value in the Curve OID column in the output of the certutil -displayEccCurve command.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyDescription

Specifies a description for the private key that is associated with the new certificate.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyExportPolicy

Specifies the policy that governs the export of the private key that is associated with the certificate.

The default value of ExportableEncrypted is not compatible with KSP and CSPs that do not allow key export. These include the Microsoft Smart Card Key Storage Provider and the Microsoft Platform Crypto Key Storage Provider. Specify NonExportable for providers that do not allow key export.

Type:	Microsoft.CertificateServices.Commands.KeyExportPolicy[]
Accepted values:	NonExportable, ExportableEncrypted, Exportable
Position:	Named
Default value:	ExportableEncrypted
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyFriendlyName

Specifies a friendly name for the private key that is associated with the new certificate.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyLength

Specifies the length, in bits, of the key that is associated with the new certificate.

Type:	Int32
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyLocation

Specifies the file system location where this cmdlet stores the private keys associated with the new certificate. Specify this parameter only when you specify the Microsoft Platform Crypto Provider.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyProtection

Specifies the level of protection required to access the private key that is associated with the certificate. The acceptable values for this parameter are:

Protect
ProtectHigh
ProtectFingerPrint
None

The default value, None, indicates that this cmdlet uses the default value from the underlying KSP or CSP. For most KSPs and CSPs, the default means that no user interface is required to create and use the private key. A user interface is required if the provider always requires a user interface, such as a smart card, or if the default configuration of the provider has been changed.

Type:	Microsoft.CertificateServices.Commands.KeyProtection[]
Accepted values:	None, Protect, ProtectHigh, ProtectFingerPrint
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeySpec

Specifies whether the private key associated with the new certificate can be used for signing, encryption, or both. The acceptable values for this parameter are:

KeyExchange
Signature
None

The default value, None, indicates that this cmdlet uses the default value from the underlying CSP.

If the private key is managed by a legacy CSP, the value is KeyExchange or Signature. If the key is managed by a Cryptography Next Generation (CNG) KSP, the value is None.

Type:	Microsoft.CertificateServices.Commands.KeySpec
Accepted values:	None, KeyExchange, Signature
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyUsage

Specifies the key usages set in the key usage extension of the certificate. The acceptable values for this parameter are:

CertSign
CRLSign
DataEncipherment
DecipherOnly
DigitalSignature
EncipherOnly
KeyAgreement
KeyEncipherment
None
NonRepudiation

The value, None, indicates that this cmdlet does not include the KeyUsage extension in the new certificate.

Type:	Microsoft.CertificateServices.Commands.KeyUsage[]
Accepted values:	None, EncipherOnly, CRLSign, CertSign, KeyAgreement, DataEncipherment, KeyEncipherment, NonRepudiation, DigitalSignature, DecipherOnly
Position:	Named
Default value:	DigitalSignature,KeyEncipherment
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-KeyUsageProperty

Specifies the key usages for the key usages property of the private key. The acceptable values for this parameter are:

All
Decrypt
KeyAgreement
None
Sign

The default value, None, indicates that this cmdlet uses the default value from the underlying KSP.

Type:	Microsoft.CertificateServices.Commands.KeyUsageProperty[]
Accepted values:	None, Decrypt, Sign, KeyAgreement, All
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-NotAfter

Specifies the date and time, as a DateTime object, that the certificate expires. To obtain a DateTime object, use the Get-Date cmdlet. The default value for this parameter is one year after the certificate was created.

Type:	DateTime
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-NotBefore

Specifies the date and time, as a DateTime object, when the certificate becomes valid. The default value for this parameter is 10 minutes before the certificate was created.

Type:	DateTime
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Pin

Specifies the personal identification number (PIN) used to access the private key of the new certificate.

Type:	System.SecureString
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Provider

Specifies the name of the KSP or CSP that this cmdlet uses to create the certificate. See Cryptographic Providers for more information. Some acceptable values include:

Microsoft Software Key Storage Provider
Microsoft Smart Card Key Storage Provider
Microsoft Platform Crypto Provider
Microsoft Strong Cryptographic Provider
Microsoft Enhanced Cryptographic Provider v1.0
Microsoft Enhanced RSA and AES Cryptographic Provider
Microsoft Base Cryptographic Provider v1.0
The name of a third party KSP or CSP

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Reader

Specifies the name of the smart card reader on which to store the private key for the new certificate.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-SecurityDescriptor

Specifies the private key security descriptor as a FileSecurity object. Read access is required to use the private key. This parameter does not apply to providers that do not support security descriptors on private keys, including the smart card CSP and smart card KSP.

Type:	FileSecurity
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-SerialNumber

Specifies a serial number, as a hexadecimal string, that is associated with the new certificate. If you do not specify this parameter, this cmdlet assigns a pseudo-randomly generated 16-byte value.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Signer

Specifies a Certificate object with which this cmdlet signs the new certificate. This value must be in the Personal certificate store of the user or device. This cmdlet must have read access to the private key of the certificate.

Type:	Microsoft.CertificateServices.Commands.Certificate
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-SignerPin

Specifies the PIN that is required to access the private key of the certificate that is used to sign the new certificate.

Type:	System.SecureString
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-SignerReader

Specifies the name of the smart card reader that is used to sign the new certificate.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-SmimeCapabilities

Indicates that the new certificate includes available encryption algorithms to a Secure/Multipurpose Internet Mail Extensions (S/MIME) capabilities extension.

Type:	SwitchParameter
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Subject

Specifies the string that appears in the subject of the new certificate. This cmdlet prefixes CN= to any value that does not contain an equal sign. For multiple subject relative distinguished names (also known as RDNs), separate each subject relative distinguished name with a comma (,). If the value of the relative distinguished name contains commas, separate each subject relative distinguished name with a semicolon (;).

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-SuppressOid

Specifies an array of object identifier (also known as OID) strings that identify default extensions to be removed from the new certificate.

Type:	String[]
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-TestRoot

Indicates that this cmdlet signs the new certificate by using a built-in test certificate. This cmdlet adds the built-in test certificate to the intermediate certification authority (CA) certificate store of the device.

This parameter is for test purposes only. The private key of the test root certificate is essentially public.

Type:	SwitchParameter
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-TextExtension

Specifies an array of certificate extensions, as strings, which this cmdlet includes in the new certificate. Each string must employ one of the following formats:

{oid}={base64String}, where {oid} is the object identifier of the extension and {base64String} is a value that you provide. After decoding {base64String}, the value must be valid Abstract Syntax Notation One (ASN.1). For more information, see Abstract Syntax Notation One (ASN.1): Specification of basic notation.

{oid}={hex}{hexadecimalString}, where {oid} is the object identifier of the extension and {hexadecimalString} is a value that you provide. After decoding {hexadecimalString}, the value must be valid ASN.1.

{oid}={text}{String}, where {oid} is the object identifier of the extension and {String} is a value that you provide. {String} must contain a textual representation of the extension value in a format specific to each object ID. When {String} is processed, it will be encoded into an ASN.1 extension value before being placed into the new certificate as an extension.

To specify that an extension is critical, insert {critical} immediately following {oid}= in any of the previous cases.

The object identifiers of some common extensions are as follows:

Application Policy: 1.3.6.1.4.1.311.21.10
Application Policy Mappings: 1.3.6.1.4.1.311.21.11
Basic Constraints: 2.5.29.19
Certificate Policies: 2.5.29.32
Enhanced Key Usage: 2.5.29.37
Name Constraints: 2.5.29.30
Policy Mappings: 2.5.29.33
Subject Alternative Name: 2.5.29.17

Application Policy extension example: 1.3.6.1.4.1.311.21.10={text}{token}={value}&{token}={value}...

You can specify the following tokens in an Application Policy extension:

Flags: Bitwise flags in hexadecimal notation: 0x{hexadecimalNumber}
GUID: A globally unique ID, such as this example: f7c3ac41-b8ce-4fb4-aa58-3d1dc0e36b39
Notice: Text notice
OID: Object identifier in dotted decimal notation, such as this example: 1.2.3.4.5
URL: The URL of a host, such as this example: http://computer07.contoso.com

To specify an Application Policy extension, specify the first object identifier, followed by zero or more other {token}={value} entries. These entries are subordinate to the preceding object identifier. Specify subsequent object identifiers, each followed by its subordinate {token}={value} entries.

Application Policy Mappings extension example: 1.3.6.1.4.1.311.21.11={text}oid={oid}&oid={oid}...

Certificate Policies extension example: 2.5.29.32={text}{token}={value}&{token}={value}...

You can specify the following tokens in a Certificate Policies extension:

Flags: Bitwise flags in hexadecimal notation: 0x{hexadecimalNumber}
GUID: A globally unique ID, such as this example: f7c3ac41-b8ce-4fb4-aa58-3d1dc0e36b39
Notice: Text notice
OID: Object identifier in dotted decimal notation, such as this example: 1.2.3.4.5
URL: The URL of a host, such as this example: http://computer07.contoso.com

To specify a Certificate Policies extension, follow the same syntax as an Application Policy extension.

Enhanced Key Usage Object Identifiers extension example: 2.5.29.37={text}{oid},{oid}...

These key usages have the following object identifiers:

Client Authentication: 1.3.6.1.5.5.7.3.2
Server Authentication: 1.3.6.1.5.5.7.3.1
Secure Email: 1.3.6.1.5.5.7.3.4
Code Signing: 1.3.6.1.5.5.7.3.3
Timestamp Signing: 1.3.6.1.5.5.7.3.8

Name Constraints extension example: 2.5.29.30={text}subtree=include&{token}={value}&{token}={value}&subtree=exclude&{token}={value}...

A Name Constraints extension can have Subtree values of Include and Exclude to specify included and excluded names.

You can specify the following tokens in a Name Constraints extension:

DirectoryName: A distinguished name such as: CN=Name,DC=Domain,DC=com
DNS: A computer name in the following format: computer.contoso.com
Email: An email address, such as this example: [email protected]
IPAddress: {IPV4 address},{IPV4 subnet mask} or {IPV6 address},{IPV6 subnet mask}
RegisteredID: ID in dotted decimal notation, such as this example: 1.2.3.4.5
UPN: A user principal name in the following format: [email protected]
URL: The URL of a host, such as this example: http://computer07.contoso.com/index.html

Policy Mapping extension example: 2.5.29.33={text}oid={oid}&oid={oid}...

Subject Alternative Name extension example: 2.5.29.17={text}token=value&token=value...

You can specify the following tokens in a Subject Alternative Name extension:

DirectoryName: A distinguished name such as: CN=Name,DC=Domain,DC=com
DNS: A computer name in the following format: computer.contoso.com
Email: An email address, such as this example: [email protected]
GUID: A globally unique ID, such as this example: f7c3ac41-b8ce-4fb4-aa58-3d1dc0e36b39
IPAddress: {IPV4 address},{IPV4 subnet mask} or {IPV6 address},{IPV6 subnet mask}
RegisteredID: ID in dotted decimal notation, such as this example: 1.2.3.4.5
UPN: A user principal name in the following format: [email protected]
URL: The URL of a host, such as this example: http://computer07.contoso.com/index.html

Type:	String[]
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Type

Specifies the type of certificate that this cmdlet creates.

Type:	Microsoft.CertificateServices.Commands.CertificateType
Accepted values:	Custom, CodeSigningCert, DocumentEncryptionCert, SSLServerAuthentication, DocumentEncryptionCertLegacyCsp
Position:	Named
Default value:	SSLServerAuthentication
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-WhatIf

Shows what would happen if the cmdlet runs. The cmdlet is not run.

Type:	SwitchParameter
Aliases:	wi
Position:	Named
Default value:	False
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

Inputs

Microsoft.CertificateServices.Commands.Certificate

The Certificate object can either be provided as a Path object to a certificate or an X509Certificate2 object.

Outputs

X509Certificate2

An X509Certificate2 object for the certificate that has been created.

System Store Locations

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