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<  Erlang  ~  Is there a way to sign messages using the crypto library?
Bill M.
Posted: Sun Jul 13, 2008 8:29 pm Reply with quote
User Joined: 06 Jun 2008 Posts: 24 Location: New York
Hello All:

I've looked at the crypto library, and I don't see any mechanism for signing messages, am I missing something?
I looked both at the documentation and the source, and
for 1.5.1.1 and I checked on-line for the newest docs,
and all I see are signature verification functions:

rsa_verify(Digest, Signature, Key) -> Verified

Types:
Verified = boolean()
Digest, Signature = MPint
Key = [E, N]
E, N = MPint
MPint = binary()

Verifies the digest and signature using the public key Key, using the crypto library function for RSA signature verification.
dss_verify(Digest, Signature, Key) -> Verified

Types:
Verified = boolean()
Digest, Signature = MPint
Key = [P, Q, G, Y]
P, Q, G, Y = MPint
MPint = binary()

Verifies the digest and signature using the public key Key, using the crypto library function for DSS signature verification.

However, there does not appear to be a corresponding signature generation function for either digital signature algorithm. OpenSSL has this (I knew this before I checked, but I checked, and sure enough it has it Smile).

I'm not sure who maintains this package, but could this be added to it?

Thanks:

Bill M.
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