(PowerShell) How to Generate an Azure Storage Account Shared Access Signature (SAS)

Shows how to generate a Shared Access Signature (SAS) for an Azure Storage Account.

Note: This example requires Chilkat v9.5.0.65 or greater.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# Note: Requires Chilkat v9.5.0.65 or greater.

# This requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# --------------------------------------------------------------------------
# Create a Shared Access Signature (SAS) token for an Azure Storage Account.
# --------------------------------------------------------------------------

# See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/constructing-an-account-sas 
# for details regarding the Azure Storage Account SAS fields.

$authSas = New-Object Chilkat.AuthAzureSAS
$authSas.AccessKey = "AZURE_ACCESS_KEY"

# Specify the format of the string to sign.
# Each comma character in the following string represents a LF ("\n") character.
# The names specified in the StringToSign are replaced with the values specified
# in the subsequent calls to SetTokenParam and SetNonTokenParam,.

# Note: The trailing comma in the StringToSign is intentional and important. This indicates that the 
# string to sign will end with a "\n".

# Also note: The names in the StringToSign are case sensitive.  The names
# specified in the 1st argument in the calls to SetNonTokenParam and SetTokenParam should
# match a name listed in StringToSign. 
$authSas.StringToSign = "accountname,signedpermissions,signedservice,signedresourcetype,signedstart,signedexpiry,signedIP,signedProtocol,signedversion,"

#  The account name is "chilkat".  Use your own account name instead of "chilkat".
#  Also use your own container name instead of "mycontainer".
$authSas.SetNonTokenParam("accountname","chilkat")

$authSas.SetTokenParam("signedpermissions","sp","rwdlacup")
$authSas.SetTokenParam("signedservice","ss","bfqt")
$authSas.SetTokenParam("signedresourcetype","srt","sco")

$dt = New-Object Chilkat.CkDateTime
$dt.SetFromCurrentSystemTime()
$authSas.SetTokenParam("signedstart","st",$dt.GetAsIso8601("YYYY-MM-DDThh:mmTZD",$false))

# This SAS token will be valid for 30 days.
$dt.AddDays(30)
$authSas.SetTokenParam("signedexpiry","se",$dt.GetAsIso8601("YYYY-MM-DDThh:mmTZD",$false))

$authSas.SetTokenParam("signedProtocol","spr","https")

#  Specifiy values and query param names for each field.
#  If a field is not specified, then an empty string will be used for its value.
$authSas.SetTokenParam("signedversion","sv","2015-04-05")

# Note that we did not call SetTokenParam for "signedIP".  For any omitted fields
# the value will default to the empty string.

# Generate the SAS token.
$sasToken = $authSas.GenerateToken()
if ($authSas.LastMethodSuccess -ne $true) {
    $($authSas.LastErrorText)
    exit
}

$("SAS token: " + $sasToken)

# Save the SAS token to a file.
# We can then use this pre-generated token for future Azure Storage Account operations.
$fac = New-Object Chilkat.FileAccess
$fac.WriteEntireTextFile("qa_data/tokens/azureStorageAccountSas.txt",$sasToken,"utf-8",$false)