TElCertificateLookup.KeyUsage property

TElCertificateLookup.KeyUsage

TElCertificateLookup See also

Filter: C# VB.NET Pascal C++ PHP Java

Specifies required key usages.

Declaration

[C#]
TSBKeyUsage KeyUsage;

[VB.NET]
Property KeyUsage As TSBKeyUsage

[Pascal]
property KeyUsage : TSBKeyUsage;
TSBKeyUsage = set of TSBKeyUsageType;

[C++]
TSBKeyUsage get_KeyUsage();
void set_KeyUsage(TSBKeyUsage Value);

[PHP]
integer get_KeyUsage()
void set_KeyUsage(integer $Value)

[Java]
int getKeyUsage();
void setKeyUsage(int Value);

Values:

[.NET]	[Pascal]	[C++]	Description
kuDigitalSignature = SmallInt(1)	kuDigitalSignature	f_kuDigitalSignature = 1	Subject private key is used with a digital signature mechanism to support security services other than non-repudiation, certificate signing, or revocation information signing.
kuNonRepudiation = SmallInt(2)	kuNonRepudiation	f_kuNonRepudiation = 2	Subject public key is used to verify digital signatures used to provide a non-repudiation service which protects against the signing entity falsely denying some action, excluding certificate or CRL signing.
kuKeyEncipherment = SmallInt(4)	kuKeyEncipherment	f_kuKeyEncipherment = 4	Subject private key is used for key transport.
kuDataEncipherment = SmallInt(8)	kuDataEncipherment	f_kuDataEncipherment = 8	Subject public key is used for enciphering user data, other than cryptographic keys.
kuKeyAgreement = SmallInt(16)	kuKeyAgreement	f_kuKeyAgreement = 16	Subject public key is used for key agreement.
kuKeyCertSign = SmallInt(32)	kuKeyCertSign	f_kuKeyCertSign = 32	Subject private key is used for certificates signing.
kuCRLSign = SmallInt(64)	kuCRLSign	f_kuCRLSign = 64	Subject private key is used for revocation information signing (e.g., a CRL).
kuEncipherOnly = SmallInt(128)	kuEncipherOnly	f_kuEncipherOnly = 128	When the EncipherOnly property is set and the KeyAgreement is also set, the subject public key may be used only for enciphering data while performing key agreement.
kuDecipherOnly = SmallInt(256)	kuDecipherOnly	f_kuDecipherOnly = 256	When the DecipherOnly property is set and the keyAgreement is also set, the subject private key may be used only for deciphering data while performing key agreement.

TSBKeyUsage values

[.NET][C++]	[Pascal]	[PHP]	Description
f_kuDigitalSignature = 1	kuDigitalSignature	kuDigitalSignature = 1	Subject private key is used with a digital signature mechanism to support security services other than non-repudiation, certificate signing, or revocation information signing.
f_kuNonRepudiation = 2	kuNonRepudiation	kuNonRepudiation = 2	Subject public key is used to verify digital signatures used to provide a non-repudiation service which protects against the signing entity falsely denying some action, excluding certificate or CRL signing.
f_kuKeyEncipherment = 4	kuKeyEncipherment	kuKeyEncipherment = 4	Subject private key is used for key transport.
f_kuDataEncipherment = 8	kuDataEncipherment	kuDataEncipherment = 8	Subject public key is used for enciphering user data, other than cryptographic keys.
f_kuKeyAgreement = 16	kuKeyAgreement	kuKeyAgreement = 16	Subject public key is used for key agreement.
f_kuKeyCertSign = 32	kuKeyCertSign	kuKeyCertSign = 32	Subject private key is used for certificates signing.
f_kuCRLSign = 64	kuCRLSign	kuCRLSign = 64	Subject private key is used for revocation information signing (e.g., a CRL).
f_kuEncipherOnly = 128	kuEncipherOnly	kuEncipherOnly = 128	When the EncipherOnly property is set and the KeyAgreement is also set, the subject public key may be used only for enciphering data while performing key agreement.
f_kuDecipherOnly = 256	kuDecipherOnly	kuDecipherOnly = 256	When the DecipherOnly property is set and the keyAgreement is also set, the subject private key may be used only for deciphering data while performing key agreement.

Description

Use this property to specify key usages that certificate must have.

Note, KeyUsageOptions assigning differs for VCL and .NET versions. To enable several options in .NET use bitwise OR operation, for example ‘kuDigitalSignature | kuCRLSign | kuKeyAgreement’.