ECDiffieHellmanOpenSsl.DeriveKeyFromHmac Method

Reference

Definition

Namespace:: System.Security.Cryptography

Assembly:: System.Security.Cryptography.OpenSsl.dll

Source:: ECDiffieHellmanOpenSsl.Derive.cs

Source:: ECDiffieHellmanOpenSsl.Derive.cs

Source:: ECDiffieHellmanOpenSsl.Derive.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Performs key derivation using a specified HMAC (Hash-based Message Authentication Code) algorithm with optional prepended or appended data.

public:
 override cli::array <System::Byte> ^ DeriveKeyFromHmac(System::Security::Cryptography::ECDiffieHellmanPublicKey ^ otherPartyPublicKey, System::Security::Cryptography::HashAlgorithmName hashAlgorithm, cli::array <System::Byte> ^ hmacKey, cli::array <System::Byte> ^ secretPrepend, cli::array <System::Byte> ^ secretAppend);

public override byte[] DeriveKeyFromHmac (System.Security.Cryptography.ECDiffieHellmanPublicKey otherPartyPublicKey, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, byte[]? hmacKey, byte[]? secretPrepend, byte[]? secretAppend);

override this.DeriveKeyFromHmac : System.Security.Cryptography.ECDiffieHellmanPublicKey * System.Security.Cryptography.HashAlgorithmName * byte[] * byte[] * byte[] -> byte[]

Public Overrides Function DeriveKeyFromHmac (otherPartyPublicKey As ECDiffieHellmanPublicKey, hashAlgorithm As HashAlgorithmName, hmacKey As Byte(), secretPrepend As Byte(), secretAppend As Byte()) As Byte()

Parameters

otherPartyPublicKey: ECDiffieHellmanPublicKey

The other party's public key.

hashAlgorithm: HashAlgorithmName

The hash algorithm to use to derive the key material.

hmacKey: Byte[]

The key for the HMAC.

secretPrepend: Byte[]

A value to prepend to the derived secret before hashing.

secretAppend: Byte[]

A value to append to the derived secret before hashing.

Returns

Byte[]

The HMAC of the shared secret after prepending or appending data as requested.

Exceptions

ArgumentException

The curve used by otherPartyPublicKey has a different size than the curve from this key.

-or-

The hashAlgorithm parameter does not specify a hash.

ArgumentNullException

otherPartyPublicKey is null.

CryptographicException

The curve used by otherPartyPublicKey is different than the curve from this key.

-or-

This instance represents only a public key.

Applies to

Dela via