public HashFunction(ModeValues mode, DigestSizes digestSize)
{
Mode = mode;
DigestSize = digestSize;
var attributes = ShaAttributes.GetShaAttributes(mode, digestSize);
OutputLen = attributes.outputLen;
BlockSize = attributes.blockSize;
MaxMessageLen = attributes.maxMessageSize;
ProcessingLen = attributes.processingLen;
Name = attributes.name;
}
public static int GetMacOutputLength(MacModes macMode)
{
switch (macMode)
{
case MacModes.CMAC_AES128:
case MacModes.CMAC_AES192:
case MacModes.CMAC_AES256:
return(128);
case MacModes.CMAC_TDES:
return(64);
case MacModes.HMAC_SHA1:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA1, DigestSizes.d160).outputLen);
case MacModes.HMAC_SHA224:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA2, DigestSizes.d224).outputLen);
case MacModes.HMAC_SHA256:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA2, DigestSizes.d256).outputLen);
case MacModes.HMAC_SHA384:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA2, DigestSizes.d384).outputLen);
case MacModes.HMAC_SHA512:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA2, DigestSizes.d512).outputLen);
case MacModes.HMAC_SHA_d512t224:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA2, DigestSizes.d512t224).outputLen);
case MacModes.HMAC_SHA_d512t256:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA2, DigestSizes.d512t256).outputLen);
case MacModes.HMAC_SHA3_224:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA3, DigestSizes.d224).outputLen);
case MacModes.HMAC_SHA3_256:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA3, DigestSizes.d256).outputLen);
case MacModes.HMAC_SHA3_384:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA3, DigestSizes.d384).outputLen);
case MacModes.HMAC_SHA3_512:
return(ShaAttributes.GetShaAttributes(ModeValues.SHA3, DigestSizes.d512).outputLen);
}
throw new ArgumentException(nameof(macMode));
}