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Quantum Profiles: Cryptographic Standards Simplified

This proposal suggests Quantum Profiles to streamline cryptographic standards and minimize variation testing, ensuring better security analysis and adherence to specifications. The profiles define encryption, digest, MAC, key exchange, and signature algorithms with unique URIs, such as RSA, AES, and SHA. Different levels of security configurations are outlined, including RSA2048, SHA256, AES128, and more, providing clear guidance for implementing robust cryptography. Hidden constraints and non-standard profiles are addressed to enhance security analysis and implementation predictability.

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Quantum Profiles: Cryptographic Standards Simplified

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  1. Algorithm Profiles Phillip Hallam-Baker Principal Scientist VeriSign Inc.

  2. TraditionalApproach

  3. Plat du jour+A-la-carte

  4. MUST implement • Becomes obsolete

  5. A-la-carte • Combinatorial explosion

  6. Hidden Constraints • Box says ‘supports SHA-1, SHA-256, RSA, DSA’ • BUT • DSA implementation does not support SHA-256

  7. Result • Many variations to test • Many configurations for security analysis • Real ‘must implement’ deviates from specification • Hidden constraints are not exposed

  8. Objectives • Constrain number of variations • Allow for specialty (vanity) crypto

  9. Proposal • Quantum Profiles

  10. Each Profile defines • One encryption, one digest, one MAC, one key exchange, one signature, &ct. • Has unique URI • [Parameters, Modes]

  11. Finite Field Profile • RSA • SHA2 • HMAC-SHA2 • AES • One C18N

  12. ECC Profile • NIST Suite B • One C18N

  13. SHA3 Profile • To be released 2009/2010

  14. Non-Standard Profile • NIST Suite A • Private definition

  15. Parameters / Modes • Limited, discrete options • Master profile specifies set of sub profiles

  16. Finite Field Profile • Level1: RSA2048, SHA256, AES128 • Level1a: RSA4096, SHA256, AES128 • Level2: RSA3072, SHA386, AES192 • Level3: RSA4096, SHA512, AES256 • Level3x = Level1 + Level1a + Level2 + Level3

  17. Finite Field Profile v2007 • Level1: RSA2048, SHA256, AES128 • Level2: RSA4096, SHA256, AES128 • Level3: RSA4096, SHA512, AES256 • Level3x = Level1 + Level2 + Level3

  18. Finite Field Profile v2009 • Level1: RSA2048-RND-PSS, SHA256, AES128 • Level2: RSA4096-RND-PSS, SHA256, AES128 • Level3: RSA4096-RND-PSS, SHA512, AES256

  19. URIs • e.g. http://w3.org/2008/xmlsec/profile-ff-level1 • [Intentionally opaque]

  20. Question • Specify Crypto and XML issues in same profile • Specify separate profiles for crypto and XML

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