DeriveKey() [2/2]

static void System.Security.Cryptography.HKDF.DeriveKey ( HashAlgorithmName hashAlgorithmName, ReadOnlySpan< byte > ikm, Span< byte > output, ReadOnlySpan< byte > salt, ReadOnlySpan< byte > info )

inlinestatic

Definition at line 158 of file HKDF.cs.

    {
        int num = HashLength(hashAlgorithmName);
        if (output.Length == 0)
        {
            throw new ArgumentException(System.SR.Argument_DestinationTooShort, "output");
        }
        int num2 = 255 * num;
        if (output.Length > num2)
        {
            throw new ArgumentException(System.SR.Format(System.SR.Cryptography_Okm_TooLarge, num2), "output");
        }
        Span<byte> span = stackalloc byte[num];
        Extract(hashAlgorithmName, num, ikm, salt, span);
        Expand(hashAlgorithmName, num, span, output, info);
    }

References System.SR.Argument_DestinationTooShort, System.SR.Cryptography_Okm_TooLarge, System.Security.Cryptography.HKDF.Expand(), System.Security.Cryptography.HKDF.Extract(), System.SR.Format(), System.Security.Cryptography.HKDF.HashLength(), System.info, and System.Span< T >.Length.