StorageReferenceId for JWT Input Claim in Azure AD B2C

Question

What value should I have for StorageReferenceId when passing a JWT as in InputClaims to a user journey?

In the sample for WingTip Games, a value of WingTipsGamesClientSecret is used. Where did that come from? Where is that value defined?

<TechnicalProfile Id="Invitation">
  <InputTokenFormat>JWT</InputTokenFormat>
  <CryptographicKeys>
    <Key Id="client_secret" StorageReferenceId="WingTipGamesClientSecret" />
  </CryptographicKeys>
</TechnicalProfile>

Answer 1

<TechnicalProfile Id="Invitation">
  <InputTokenFormat>JWT</InputTokenFormat>
  <CryptographicKeys>
    <Key Id="client_secret" StorageReferenceId="B2C_1A_StackOverflowKey" />
  </CryptographicKeys>
</TechnicalProfile>

IEF -> Policy Keys -> Add