public static S3PostUploadSignedPolicy GetSignedPolicyV4(string policy, AWSCredentials credentials, RegionEndpoint region)
{
DateTime correctedUtcNow = AWSSDKUtils.get_CorrectedUtcNow();
ImmutableCredentials credentials2 = credentials.GetCredentials();
string text = "AWS4-HMAC-SHA256";
string text2 = AWS4Signer.FormatDateTime(correctedUtcNow, "yyyyMMdd");
string text3 = AWS4Signer.FormatDateTime(correctedUtcNow, "yyyyMMddTHHmmssZ");
string text4 = string.Format(CultureInfo.InvariantCulture, "{0}/{1}/{2}/{3}/{4}/", credentials2.get_AccessKey(), text2, region.get_SystemName(), "s3", "aws4_request");
Dictionary <string, string> dictionary = new Dictionary <string, string>
{
{
S3Constants.PostFormDataXAmzCredential,
text4
},
{
S3Constants.PostFormDataXAmzAlgorithm,
text
},
{
S3Constants.PostFormDataXAmzDate,
text3
}
};
if (credentials2.get_UseToken())
{
dictionary[S3Constants.PostFormDataSecurityToken] = credentials2.get_Token();
}
string text5 = Convert.ToBase64String(addConditionsToPolicy(policy, dictionary));
byte[] array = AWS4Signer.ComposeSigningKey(credentials2.get_SecretKey(), region.get_SystemName(), text2, "s3");
string signature = AWSSDKUtils.ToHex(AWS4Signer.ComputeKeyedHash(1, array, text5), true);
return(new S3PostUploadSignedPolicy
{
Policy = text5,
Signature = signature,
AccessKeyId = credentials2.get_AccessKey(),
SecurityToken = credentials2.get_Token(),
SignatureVersion = "4",
Algorithm = text,
Date = text3,
Credential = text4
});
}
