> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/kld/key-information.md).

# Key Information

- [Key import](https://docs.verifone.com/kld/key-information/key-import.md)
- [How to Import Key Files through USB](https://docs.verifone.com/kld/key-information/key-import/how-to-import-key-files-through-usb.md)
- [File Formats](https://docs.verifone.com/kld/key-information/key-import/file-formats.md)
- [TR-31 File Formats (per folder / key type)](https://docs.verifone.com/kld/key-information/key-import/tr-31-file-formats-per-folder-key-type.md)
- [Cryptogram File Formats](https://docs.verifone.com/kld/key-information/key-import/cryptogram-file-formats.md)
- [Key Import UI (Files)](https://docs.verifone.com/kld/key-information/key-import/key-import-ui-files.md)
- [Import DUKPT-BDK Keys](https://docs.verifone.com/kld/key-information/key-import/import-dukpt-bdk-keys.md)
- [Import FIXED Keys](https://docs.verifone.com/kld/key-information/key-import/import-fixed-keys.md)
- [Import DUKPT-IK (Initial Keys)](https://docs.verifone.com/kld/key-information/key-import/import-dukpt-ik-initial-keys.md)
- [How to Import MS (Master Session) Keys](https://docs.verifone.com/kld/key-information/key-import/how-to-import-ms-master-session-keys.md)
- [Handling Key Import Error](https://docs.verifone.com/kld/key-information/key-import/handling-key-import-error.md)
- [Example of manual keys](https://docs.verifone.com/kld/key-information/example-of-manual-keys.md)
- [KEK TDES - 3 components](https://docs.verifone.com/kld/key-information/example-of-manual-keys/kek-tdes-3-components.md)
- [Fixed Key - 2 Components](https://docs.verifone.com/kld/key-information/example-of-manual-keys/fixed-key-2-components.md)
- [Fixed AES-256 - 3 Components](https://docs.verifone.com/kld/key-information/example-of-manual-keys/fixed-aes-256-3-components.md)
- [Key import files from USB - sample files+](https://docs.verifone.com/kld/key-information/key-import-files-from-usb-sample-files+.md)


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