Makoto:
The indicated paragraph must be revised! RSA should be implemented for
backward compatibility with S/MIME 2. Diffie-Hellman (the X9.42 variant)
will be required for S/MIME 3.
Russ
At 05:00 PM 1/20/98 +0900, Makoto Tomoeda wrote:
Hi All
I have a question regarding to MUST implement algorithms.
In <draft-ietf-smime-msg-00.txt> section 2.3 says....
2.3 KeyEncryptionAlgorithmIdentifier
Sending and receiving agents MUST support Diffie-Hellman defined in[DH].
Receiving agents SHOULD support rsaEncryption. Incoming encrypted
messages contain symmetric keys which are to be decrypted with a
user's private key. The size of the private key is determined during
key generation.Sending agents SHOULD support rsaEncryption.
Sending agents MUST support encryption of symmetric keys with RSA
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public keys at key sizes from 512 bits to 1024 bits.
~~~~~~~~~~~~~
Is that mean Sending agents MUST support RSA algorithm?
Sorry if I misunderstood the sentence.
Thanks in advance.
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Makoto Tomoeda
NTT Multimedia Communication Promotion Dept.
Security Service Project Group
E-mail : tomoeda(_dot_)makoto(_at_)nsc(_dot_)cae(_dot_)ntt(_dot_)co(_dot_)jp
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