# OpenPGP for application developers **{sub-ref}`today`** ```{toctree} :numbered: :maxdepth: 2 :glob: 01-intro.md 02-highlevel.md 03-cryptography.md 04-certificates.md 05-private.md 06-signatures.md 07-signing_data.md 08-signing_components.md 09-verification.md 10-encryption.md 11-decryption.md 12-compression.md 13-armor.md 14-pitfalls.md 15-policy.md 16-versions.md 17-migration.md adv/17a-adv-certificates.md adv/17b-adv-private.md adv/17c-adv-signatures.md adv/17d-adv-sign-data.md adv/17e-adv-sig-component.md zoom/certificates.md zoom/private_keys.md zoom/signatures.md zoom/encyption.md 22-resources.md 23-glossary.md 24-acknowledgements.md a-artifacts.md ```