ECDiffieHellmanCng.DeriveKeyFromHash Method
Definition
Important
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Performs key derivation using a specified hash algorithm with optional prepended or appended data.
public:
override cli::array <System::Byte> ^ DeriveKeyFromHash(System::Security::Cryptography::ECDiffieHellmanPublicKey ^ otherPartyPublicKey, System::Security::Cryptography::HashAlgorithmName hashAlgorithm, cli::array <System::Byte> ^ secretPrepend, cli::array <System::Byte> ^ secretAppend);public override byte[] DeriveKeyFromHash (System.Security.Cryptography.ECDiffieHellmanPublicKey otherPartyPublicKey, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, byte[]? secretPrepend, byte[]? secretAppend);public override byte[] DeriveKeyFromHash (System.Security.Cryptography.ECDiffieHellmanPublicKey otherPartyPublicKey, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, byte[] secretPrepend, byte[] secretAppend);override this.DeriveKeyFromHash : System.Security.Cryptography.ECDiffieHellmanPublicKey * System.Security.Cryptography.HashAlgorithmName * byte[] * byte[] -> byte[]Public Overrides Function DeriveKeyFromHash (otherPartyPublicKey As ECDiffieHellmanPublicKey, hashAlgorithm As HashAlgorithmName, 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.
- 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
The hash of the shared secret after prepending or appending data as requested.
Exceptions
A derived class must override this method.
The curve used by otherPartyPublicKey has a different size than the curve from this key.
-or-
The hashAlgorithm parameter does not specify a hash.
otherPartyPublicKey is null.
The curve used by otherPartyPublicKey is different than the curve from this key.
-or-
This instance represents only a public key.
