The SCRAM salt length is currently set as

/* length of salt when generating new verifiers */
#define SCRAM_DEFAULT_SALT_LEN     12

without further comment.

I suspect that this length was chosen based on the example in RFC 5802
(SCRAM-SHA-1) section 5.  But the analogous example in RFC 7677
(SCRAM-SHA-256) section 3 uses a length of 16.  Should we use that instead?

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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