<PackageReference Include="Microsoft.Identity.Client" Version="4.82.1-preview2" />

Microsoft.Identity.Client.AuthScheme.PoP.InMemoryCryptoProvider

The default implementation will store a key in memory
namespace Microsoft.Identity.Client.AuthScheme.PoP { internal class InMemoryCryptoProvider : IPoPCryptoProvider { public string CannonicalPublicKeyJwk { get; } public string CryptographicAlgorithm { get; } public InMemoryCryptoProvider(); public byte[] Sign(byte[] payload); } }