SqlColumnEncryptionCngProvider Class

Reference

Definition

Namespace:: System.Data.SqlClient

Assembly:: System.Data.dll

Important

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The CMK Store provider implementation for using the Microsoft Cryptography API: Next Generation (CNG) with Always Encrypted.

public ref class SqlColumnEncryptionCngProvider : System::Data::SqlClient::SqlColumnEncryptionKeyStoreProvider

public class SqlColumnEncryptionCngProvider : System.Data.SqlClient.SqlColumnEncryptionKeyStoreProvider

type SqlColumnEncryptionCngProvider = class
    inherit SqlColumnEncryptionKeyStoreProvider

Public Class SqlColumnEncryptionCngProvider
Inherits SqlColumnEncryptionKeyStoreProvider

Inheritance: Object

SqlColumnEncryptionKeyStoreProvider
SqlColumnEncryptionCngProvider

Remarks

Enables storing Always Encrypted column master key keys in a store, such as a hardware security module (HSM), that supports the Microsoft Cryptography API: Next Generation (CNG).

Constructors

SqlColumnEncryptionCngProvider()

Initializes a new instance of the SqlColumnEncryptionCngProvider class.

Fields

ProviderName

A constant string for the provider name 'MSSQL_CNG_STORE'.

Methods

DecryptColumnEncryptionKey(String, String, Byte[])	Decrypts the given encrypted value using an asymmetric key specified by the key path and the specified algorithm. The key path will be in the format of [ProviderName]/KeyIdentifier and should be an asymmetric key stored in the specified CNG key store provider. The valid algorithm used to encrypt/decrypt the CEK is 'RSA_OAEP'.
EncryptColumnEncryptionKey(String, String, Byte[])	Encrypts the given plain text column encryption key using an asymmetric key specified by the key path and the specified algorithm. The key path will be in the format of [ProviderName]/KeyIdentifier and should be an asymmetric key stored in the specified CNG key store provider. The valid algorithm used to encrypt/decrypt the CEK is 'RSA_OAEP'.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
SignColumnMasterKeyMetadata(String, Boolean)	Throws a NotSupportedException exception in all cases.
SignColumnMasterKeyMetadata(String, Boolean)	When implemented in a derived class, digitally signs the column master key metadata with the column master key referenced by the `masterKeyPath` parameter. The input values used to generate the signature should be the specified values of the `masterKeyPath` and `allowEnclaveComputations` parameters. (Inherited from SqlColumnEncryptionKeyStoreProvider)
ToString()	Returns a string that represents the current object. (Inherited from Object)
VerifyColumnMasterKeyMetadata(String, Boolean, Byte[])	This function must be implemented by the corresponding Key Store providers. This function should use an asymmetric key identified by a key path and verify the master key metadata consisting of (masterKeyPath, allowEnclaveComputations, providerName).
VerifyColumnMasterKeyMetadata(String, Boolean, Byte[])	When implemented in a derived class, this method is expected to verify the specified signature is valid for the column master key with the specified key path and the specified enclave behavior. The default implementation throws NotImplementedException. (Inherited from SqlColumnEncryptionKeyStoreProvider)

Applies to

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