Hi there,
How can I verify HMAC signatures, using [ns_crypto::hmac ...]?
For example, one has sent an encrypted message:
set secret_message [ns_crypto::hmac string -digest sha256 "Abracadabra"
"What is the magic word?"]
... and another wants to verify integrity and authenticity of that message in
the other side
CRYPTO library has crypto::verify, as in
https://clouddocs.f5.com/api/irules/CRYPTO__verify.html
<https://clouddocs.f5.com/api/irules/CRYPTO__verify.html>set secret_key
"foobar1234" set data "This is my data" set signed_data [CRYPTO::sign -alg
hmac-sha1 -key $secret_key $data] if { [CRYPTO::verify -alg hmac-sha1 -key
$secret_key -signature $signed_data $data] } { log local0. "Data verified" }
Also, Chilkat example shows more sophisticated approaches to sign and verify.
Nothing so complex. It's just using OO writing the code, to make it code
readable and intuitive. https://www.example-code.com/tcl/jws_hmac_sha_256.asp
<https://www.example-code.com/tcl/jws_hmac_sha_256.asp>
Thus, I was looking for something similar in the NS Library, such as the method
[ns_crypto::md ...], which contains the parameter -verify, but it seems that's
not the case of [ns_crypto::hmac ...]. At least it's not in the docs.
https://naviserver.sourceforge.io/n/naviserver/files/ns_crypto.html#8
<https://naviserver.sourceforge.io/n/naviserver/files/ns_crypto.html#8>
How would I verify a message using NS library?
Best wishes,
I
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