public string ToQueryStringFragment(NameValueCollection additionalParameters, bool includeHMAC = true)
{
NameValueCollection nameValueCollection = new NameValueCollection();
if (this.KeyVersion > 1)
{
nameValueCollection.Add("pt", ((int)this.PayloadType).ToString(NumberFormatInfo.InvariantInfo));
}
else
{
CryptoKeyPayloadType payloadType = this.PayloadType;
if (payloadType != CryptoKeyPayloadType.SvmFeedbackEncryption)
{
throw new InvalidOperationException(string.Format("Key of type {0} is not supported by legacy payloads, Key version must be greater than 1", Enum.GetName(typeof(CryptoKeyPayloadType), this.PayloadType)));
}
AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType legacyPayloadType = AuthkeyAuthenticationRequest.SignedUrl.LegacyPayloadType.SvmFeedback;
NameValueCollection nameValueCollection2 = nameValueCollection;
string name = "pt";
int num = (int)legacyPayloadType;
nameValueCollection2.Add(name, num.ToString(NumberFormatInfo.InvariantInfo));
}
nameValueCollection.Add("kv", this.KeyVersion.ToString(NumberFormatInfo.InvariantInfo));
nameValueCollection.Add("ts", this.UtcTimestamp.ToFileTimeUtc().ToString(NumberFormatInfo.InvariantInfo));
nameValueCollection.Add("iv", AuthkeyAuthenticationRequest.UrlEncodeBase64String(Convert.ToBase64String(this.InitializationVector)));
nameValueCollection.Add("authKey", AuthkeyAuthenticationRequest.UrlEncodeBase64String(Convert.ToBase64String(this.Payload)));
if (includeHMAC && this.MessageAuthenticationCode != null)
{
nameValueCollection.Add("hmac", AuthkeyAuthenticationRequest.UrlEncodeBase64String(Convert.ToBase64String(this.MessageAuthenticationCode)));
}
if (additionalParameters != null)
{
nameValueCollection.Add(additionalParameters);
}
return(AuthkeyAuthenticationRequest.ConstructQueryString(nameValueCollection));
}
// Token: 0x0600019B RID: 411 RVA: 0x0000B49C File Offset: 0x0000969C
public static byte[] ComputeHash(string[] hashComponents, CryptoKeyPayloadType payloadKey, byte version)
{
HMAC hmacforCryptoKey = HashUtility.GetHMACForCryptoKey(payloadKey, version);
byte[] bytes = Encoding.UTF8.GetBytes(string.Join(string.Empty, hashComponents));
return(hmacforCryptoKey.ComputeHash(bytes));
}
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);
}
// Token: 0x0600019D RID: 413 RVA: 0x0000B4D8 File Offset: 0x000096D8
private static HMAC GetHMACForCryptoKey(CryptoKeyPayloadType payloadKey, byte version)
{
HMAC hmac = null;
CryptographicKey keyByPayload = CryptoKeyStore.GetKeyByPayload(payloadKey);
if (version == 0)
{
hmac = HMAC.Create("HMACSHA1");
hmac.Key = keyByPayload.Key;
}
else if (version == 1)
{
hmac = HMAC.Create(keyByPayload.Algorithm.Name);
hmac.Key = keyByPayload.Key;
}
return(hmac);
}
// Token: 0x0600019C RID: 412 RVA: 0x0000B4CE File Offset: 0x000096CE
public static byte[] ComputeHash(string[] hashComponents, CryptoKeyPayloadType payloadKey)
{
return(HashUtility.ComputeHash(hashComponents, payloadKey, 1));
}
