🎯 Customer request: Can we speed up the cryptographic signature? ✅📉 Sure. Let’s reduce the duration of the signing process by 99.96%. How? Migrating the cryptographic signature from a Java class in Oracle Database to a PL/SQL function leveraging DBMS_CRYPTO. Side benefit: Simpler and easier to maintain code, and recovering a lost private key, as part 2 will tell. What is a cryptographic signature? Here is a good definition from .