Switching from openssl-1.0.1 to openssl-0.9.8 seems to have fixed the problem.

On 2 Jun 2012, at 9:57 AM, David Kreindler wrote:

> Running BIND 9.9.1, 9.9.0 or 9.7.6 on AIX 5.2, we are experiencing 
> intermittent failures signing zones, both with named and with dnssec-signzone.
> 
> We first noticed the problem when BIND 9.9.1's inline signing resulted in 
> zones with missing RRSIGs.
> 
> When we turned off "auto-dnssec maintain" & "inline signing yes" for those 
> zones and attempted to sign them with dnssec-signzone, most of the small 
> zones were signed successfully, but the large zones failed with "Missing 
> RSASHA1 signature" verification messages (using dnssec-signzone's -a option).
> 
> Adding "-v 2" to the command seemed to suggest that the "missing" signatures 
> actually were being generated and verified, though dnssec-signzone still 
> failed.
> 
> Immediately attempting again to sign the zone with the same dnssec-signzone 
> command results in a different error message:
> 
>       "dnssec-signzone: fatal: No self-signed KSK DNSKEY found.  Supply an 
> active key with the KSK flag set, or use '-P'."
> 
> Oddly, this error message is preceded by dnssec-signzone writing to the 
> terminal that it has successfully fetched the KSK along with an active and a 
> standby ZSK (using dnssec-signzone's -S option).
> 
> We have ruled out memory and disk space limitations. We suspected a lack of 
> entropy, since the errors changed each time we ran the dnssec-signzone 
> command, so we tried using both dnssec-signzone's -p option and "-r 
> /dev/urandom", to no avail.
> 
> The problem seems to have arisen spontaneously, after years of successful 
> DNSSEC and months of successful BIND 9.9. We can identify no changes to the 
> system except the upgrade (about four days before the first occurrence of the 
> problem) to 9.9.1 -- but reverting to 9.9.0 and even 9.7.6 does not correct 
> the problem.
> 
> Do you have any ideas about what the source of the problem might be or how to 
> go about troubleshooting further?
> 
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