Storefront 3.12 - SAML authentication is not working with IDP  like Forge Rock.

Error Message on Store Front Page

Error Message: "There was a Failure with mapped account."

Following Error message is thrown in the Event Viewer 

The security token failed validation.
System.Security.Cryptography.CryptographicException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Digest verification failed for Reference '#s2d0dbe06b941391e7c6c5ca25b1c37b853e73e2cb'.
   at System.IdentityModel.Reference.EnsureDigestValidityIfIdMatches(String id, Object resolvedXmlSource)
   at System.IdentityModel.StandardSignedInfo.EnsureDigestValidityIfIdMatches(String id, Object resolvedXmlSource)
   at System.IdentityModel.SignedXml.EnsureDigestValidity(String id, Object resolvedXmlSource)
   at System.IdentityModel.EnvelopedSignatureReader.OnEndOfRootElement()
   at System.IdentityModel.EnvelopedSignatureReader.Read()
   at System.Xml.XmlReader.ReadEndElement()
   at System.IdentityModel.Tokens.Saml2SecurityTokenHandler.ReadAssertion(XmlReader reader)
   at System.IdentityModel.Tokens.Saml2SecurityTokenHandler.ReadToken(XmlReader reader)
   at System.IdentityModel.Tokens.SecurityTokenHandlerCollection.ReadToken(XmlReader reader)
   at Citrix.DeliveryServices.Authentication.Saml20.SamlExtensions.GetSecurityToken(String assertion, SecurityTokenHandlerCollection securityTokenHandlers)
   at Citrix.DeliveryServices.Authentication.Saml20.SamlManager.ProcessSamlResponse(String base64EncodedResponse, Boolean compressed)

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Citrix Authentication Service" />
    <EventID Qualifiers="0">1</EventID>
    <Level>2</Level>
    <Task>1263</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2019-10-01T10:17:09.000000000Z" />
    <EventRecordID>22543</EventRecordID>
    <Channel>Citrix Delivery Services</Channel>
    <Computer>StoreFront</Computer>
    <Security />
  </System>
  <EventData>
    <Data>The security token failed validation.
System.Security.Cryptography.CryptographicException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Digest verification failed for Reference '#s2d0dbe06b941391e7c6c5ca25b1c37b853e73e2cb'.
   at System.IdentityModel.Reference.EnsureDigestValidityIfIdMatches(String id, Object resolvedXmlSource)
   at System.IdentityModel.StandardSignedInfo.EnsureDigestValidityIfIdMatches(String id, Object resolvedXmlSource)
   at System.IdentityModel.SignedXml.EnsureDigestValidity(String id, Object resolvedXmlSource)
   at System.IdentityModel.EnvelopedSignatureReader.OnEndOfRootElement()
   at System.IdentityModel.EnvelopedSignatureReader.Read()
   at System.Xml.XmlReader.ReadEndElement()
   at System.IdentityModel.Tokens.Saml2SecurityTokenHandler.ReadAssertion(XmlReader reader)
   at System.IdentityModel.Tokens.Saml2SecurityTokenHandler.ReadToken(XmlReader reader)
   at System.IdentityModel.Tokens.SecurityTokenHandlerCollection.ReadToken(XmlReader reader)
   at Citrix.DeliveryServices.Authentication.Saml20.SamlExtensions.GetSecurityToken(String assertion, SecurityTokenHandlerCollection securityTokenHandlers)
   at Citrix.DeliveryServices.Authentication.Saml20.SamlManager.ProcessSamlResponse(String base64EncodedResponse, Boolean compressed)
</Data>
  </EventData>
</Event>

Problem Cause

Line Breaks are seen in Token provided by IDP and SF is not able to process it.