1. S/MIME v3.2 draft-ietf-smime-3850bis-00.txt draft-ietf-smime-3851bis-00.txt Sean Turner Blake Ramsdell

2. What’s Updated Mostly it’s about the algorithms Some minor edits and references updated Question: Should key size requirement be updated - it says 512-2048 bits.

3. DOCUMENTALGORITHM SENDINGRECEIVING Digest S/MIME v3.1SHA-1 MUSTSHA-1 MUST MD5 SHOULD S/MIME v3.2SHA-256 MUST SHA-1 SHOULD- SHA-256 MUST SHA-1 SHOULD- MD5 SHOULD- Signature S/MIME v3.1RSA with SHA-1 or DSA with SHA-1 MUST DSA MUST RSA MUST S/MIME v3.2RSA with SHA-256 MUST RSA with SHA-1 SHOULD- RSA-PSS with SHA-256 SHOULD+ ECDSA with SHA-256 SHOULD+ DSA with SHA-1 SHOULD- RSA with MD5 SHOULD- Same as Sending

4. DOCUMENTALGORITHM SENDINGRECEIVING Key Management S/MIME v3.1RSA MUST E-S D-H SHOULD Same as Sending S/MIME v3.2RSA MUST RSA-OAEP SHOULD+ ECDH SHOULD+ E-S D-H SHOULD- Same as Sending Content Encryption and Key Wrap S/MIME v3.1Triple DES MUST RC2 SHOULD AES 128 CBC SHOULD AES 192 CBC SHOULD AES 256 CBC SHOULD Same as Sending S/MIME v3.2AES 128 CBC MUST AES 192 CBC SHOULD+ AES 256 CBC SHOULD+ Triple DES SHOULD- Same as Sending