1 / 9

S/MIME IBE Submissions

S/MIME IBE Submissions. Terence Spies Voltage Security. Submission Documents. Draft-ietf-smime-ibearch-00 Overview of how the IBE protocols work Draft-ietf-smime-ibcs-00 Complete description of IBE cryptomath Draft-ietf-smime-bfibecms-00 How to encode in CMS Draft-ietf-smime-ibepkg-00

tao
Download Presentation

S/MIME IBE Submissions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. S/MIME IBE Submissions Terence Spies Voltage Security

  2. Submission Documents • Draft-ietf-smime-ibearch-00 • Overview of how the IBE protocols work • Draft-ietf-smime-ibcs-00 • Complete description of IBE cryptomath • Draft-ietf-smime-bfibecms-00 • How to encode in CMS • Draft-ietf-smime-ibepkg-00 • How to fetch a private key • Draft-ietf-smime-ibepps-00 • How to fetch a public parameter set

  3. Ibearch Public Param Server Key Server ibepps Get encryption parameters ibepkg Get decryption key Sender CMS Message Recipient ibecms Ibeibcs - describes mathematical primitives

  4. Ibcs • Describes 4 basic operations • Generate master secret and parameters • Encrypt to an identity • Derive a decryption key from an identity • Decrypt with decryption key • Two mathematical options • Boneh-Franklin • older system • Boneh-Boyen • preferred for future development

  5. Bfibecms • Describes encoding the IBE encrypted message key into OtherRecipientInfo field • This field contains • Recipient identity • Server location • Key fetch method • Encrypted key data • All data needed to request the decryption key and decrypt

  6. Ibepkg • Describes XML key request format • Server can reply with any auth request • Basic and digest auth are described • Server can also reply with a URL • This specifies an external authentication server • Client should receive a token and rerequest key with token in the request

  7. Ibepps • Public parameters describing how to encrypt • Contains • IBE parameter data • URI of the associated key server • Identity schema supported by the server • Email schema is defined in ibecms

  8. Known defects • Need real security considerations section • Need to fix some ASN.1 bugs • ASCII is munged for ‘ in the docs

  9. Questions • Is this the right document structure? • Combine PP+PKG+Arch • Leaves CMS, Math, Protocols • Are the XML request structures correct? • IPR Statement

More Related