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Merge pull request #127 from veena-udayabhanu/preview
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Add getting started samples for encryption
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@veena-udayabhanu
veena-udayabhanu committed Apr 29, 2015
2 parents 51219c6 + ca9e7c0 commit 5629c34
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10 changes: 10 additions & 0 deletions Samples/GettingStarted/EncryptionSamples/BlobGettingStarted/App.config
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<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<appSettings>
<!--Uncomment the string and insert your storage account name and key in the line below. -->
<!--<add key="StorageConnectionString" value="DefaultEndpointsProtocol=https;AccountName=[Account Name];AccountKey=[Account Key]" />-->
</appSettings>
</configuration>
140 changes: 140 additions & 0 deletions Samples/GettingStarted/EncryptionSamples/BlobGettingStarted/BlobGettingStarted.csproj
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42 changes: 42 additions & 0 deletions Samples/GettingStarted/EncryptionSamples/BlobGettingStarted/LocalResolver.cs
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//----------------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
// EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
//----------------------------------------------------------------------------------
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious. No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
//----------------------------------------------------------------------------------
namespace BlobGettingStarted
{
using Microsoft.Azure.KeyVault.Core;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

public class LocalResolver : IKeyResolver
{
private Dictionary<string, IKey> keys = new Dictionary<string, IKey>();

public void Add(IKey key)
{
keys[key.Kid] = key;
}

public async Task<IKey> ResolveKeyAsync(string kid, CancellationToken token)
{
IKey result;

keys.TryGetValue(kid, out result);

return await Task.FromResult(result);
}
}
}
122 changes: 122 additions & 0 deletions Samples/GettingStarted/EncryptionSamples/BlobGettingStarted/Program.cs
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//----------------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
// EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
//----------------------------------------------------------------------------------
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious. No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
//----------------------------------------------------------------------------------
namespace BlobGettingStarted
{
using Microsoft.Azure.KeyVault;
using Microsoft.Azure.KeyVault.Core;
using Microsoft.WindowsAzure;
using Microsoft.WindowsAzure.Storage;
using Microsoft.WindowsAzure.Storage.Blob;
using System;
using System.IO;
using System.Security.Cryptography;

/// <summary>
/// Demonstrates how to use encryption with the Azure Blob service.
/// </summary>
public class Program
{
const string DemoContainer = "democontainer";

static void Main(string[] args)
{
Console.WriteLine("Blob encryption sample");

// Retrieve storage account information from connection string
// How to create a storage connection string - http://msdn.microsoft.com/en-us/library/azure/ee758697.aspx
CloudStorageAccount storageAccount = CreateStorageAccountFromConnectionString(CloudConfigurationManager.GetSetting("StorageConnectionString"));
CloudBlobClient client = storageAccount.CreateCloudBlobClient();
CloudBlobContainer container = client.GetContainerReference(DemoContainer + Guid.NewGuid().ToString("N"));

try
{
container.Create();
int size = 5 * 1024 * 1024;
byte[] buffer = new byte[size];

Random rand = new Random();
rand.NextBytes(buffer);

CloudBlockBlob blob = container.GetBlockBlobReference("blockblob");

// Create the IKey used for encryption.
RsaKey key = new RsaKey("private:key1");

// Create the encryption policy to be used for upload.
BlobEncryptionPolicy uploadPolicy = new BlobEncryptionPolicy(key, null);

// Set the encryption policy on the request options.
BlobRequestOptions uploadOptions = new BlobRequestOptions() { EncryptionPolicy = uploadPolicy };

Console.WriteLine("Uploading the encrypted blob.");

// Upload the encrypted contents to the blob.
using (MemoryStream stream = new MemoryStream(buffer))
{
blob.UploadFromStream(stream, size, null, uploadOptions, null);
}

// Download the encrypted blob.
// For downloads, a resolver can be set up that will help pick the key based on the key id.
LocalResolver resolver = new LocalResolver();
resolver.Add(key);

BlobEncryptionPolicy downloadPolicy = new BlobEncryptionPolicy(null, resolver);

// Set the decryption policy on the request options.
BlobRequestOptions downloadOptions = new BlobRequestOptions() { EncryptionPolicy = downloadPolicy };

Console.WriteLine("Downloading the encrypted blob.");

// Download and decrypt the encrypted contents from the blob.
using (MemoryStream outputStream = new MemoryStream())
{
blob.DownloadToStream(outputStream, null, downloadOptions, null);
}

Console.WriteLine("Press enter key to exit");
Console.ReadLine();
}
finally
{
container.DeleteIfExists();
}
}

private static CloudStorageAccount CreateStorageAccountFromConnectionString(string storageConnectionString)
{
CloudStorageAccount storageAccount;
try
{
storageAccount = CloudStorageAccount.Parse(storageConnectionString);
}
catch (FormatException)
{
Console.WriteLine("Invalid storage account information provided. Please confirm the AccountName and AccountKey are valid in the app.config file - then restart the sample.");
Console.WriteLine("Press any key to exit");
Console.ReadLine();
throw;
}
catch (ArgumentException)
{
Console.WriteLine("Invalid storage account information provided. Please confirm the AccountName and AccountKey are valid in the app.config file - then restart the sample.");
Console.WriteLine("Press any key to exit");
Console.ReadLine();
throw;
}

return storageAccount;
}
}
}
36 changes: 36 additions & 0 deletions Samples/GettingStarted/EncryptionSamples/BlobGettingStarted/Properties/AssemblyInfo.cs
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using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyTitle("BlobGettingStarted")]
[assembly: AssemblyDescription("")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct("BlobGettingStarted")]
[assembly: AssemblyCopyright("Copyright © 2015")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]

// Setting ComVisible to false makes the types in this assembly not visible
// to COM components. If you need to access a type in this assembly from
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]

// The following GUID is for the ID of the typelib if this project is exposed to COM
[assembly: Guid("66d06292-516c-41b4-9041-aa94b8115119")]

// Version information for an assembly consists of the following four values:
//
// Major Version
// Minor Version
// Build Number
// Revision
//
// You can specify all the values or you can default the Build and Revision Numbers
// by using the '*' as shown below:
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]
20 changes: 20 additions & 0 deletions Samples/GettingStarted/EncryptionSamples/BlobGettingStarted/packages.config
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<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Hyak.Common" version="1.0.2" targetFramework="net45" />
<package id="Microsoft.Azure.Common" version="2.0.4" targetFramework="net45" />
<package id="Microsoft.Azure.Common.Dependencies" version="1.0.0" targetFramework="net45" />
<package id="Microsoft.Azure.KeyVault" version="0.9.1-preview" targetFramework="net45" />
<package id="Microsoft.Azure.KeyVault.Core" version="0.9.1-preview" targetFramework="net45" />
<package id="Microsoft.Azure.KeyVault.Extensions" version="0.9.1-preview" targetFramework="net45" />
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<package id="Microsoft.Net.Http" version="2.2.22" targetFramework="net45" />
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<package id="System.Spatial" version="5.6.2" targetFramework="net45" />
<package id="WindowsAzure.Storage" version="4.4.0-preview" targetFramework="net45" />
</packages>
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