public SignedUrl(CryptoKeyPayloadType payloadType, string plaintextPayload)
{
this.PayloadType = payloadType;
this.UtcTimestamp = DateTime.UtcNow;
this.Payload = CryptoUtils.Encrypt(Encoding.UTF8.GetBytes(plaintextPayload), payloadType, out this.keyVersion, out this.InitializationVector);
string[] hashComponents = new string[]
{
this.ToQueryStringFragment(null, false)
};
this.MessageAuthenticationCode = HashUtility.ComputeHash(hashComponents, this.HashTypeForPayload);
}
public string ValidateHashAndDecryptPayload()
{
string[] hashComponents = new string[]
{
this.ToQueryStringFragment(null, false)
};
byte[] array = HashUtility.ComputeHash(hashComponents, this.HashTypeForPayload);
if (array.Length == this.MessageAuthenticationCode.Length)
{
if (!array.Where((byte t, int i) => t != this.MessageAuthenticationCode[i]).Any <byte>())
{
return(Encoding.UTF8.GetString(CryptoUtils.Decrypt(this.Payload, this.PayloadType, this.KeyVersion, this.InitializationVector)));
}
}
throw new SecurityException("failed to validate hash and decrypt payload");
}
// Token: 0x0600019C RID: 412 RVA: 0x0000B4CE File Offset: 0x000096CE
public static byte[] ComputeHash(string[] hashComponents, CryptoKeyPayloadType payloadKey)
{
return(HashUtility.ComputeHash(hashComponents, payloadKey, 1));
}