/// <inheritdoc />
protected internal override byte[] Sign(byte[] data)
{
using (var algorithm = MacAlgorithmProvider.GetAlgorithm(this.algorithm))
{
#if __ANDROID__
using Javax.Crypto.Spec.SecretKeySpec key = MacAlgorithmProvider.GetSecretKey(this.algorithm, this.key);
algorithm.Init(key);
return(algorithm.DoFinal(data) !);
#else
algorithm.Key = this.key;
return(algorithm.ComputeHash(data));
#endif
}
}
/// <inheritdoc />
protected internal override bool VerifySignature(byte[] data, byte[] signature)
{
using (var algorithm = MacAlgorithmProvider.GetAlgorithm(this.algorithm))
{
byte[] computedMac;
#if __ANDROID__
using Javax.Crypto.Spec.SecretKeySpec key = MacAlgorithmProvider.GetSecretKey(this.algorithm, this.key);
algorithm.Init(key);
computedMac = algorithm.DoFinal(data) !;
#else
algorithm.Key = this.key;
computedMac = algorithm.ComputeHash(data);
#endif
return(CryptoUtilities.BufferEquals(computedMac, signature));
}
}