Created
January 21, 2014 17:12
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| erl | |
| Erlang R16B01 (erts-5.10.2) [source-bdf5300] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false] | |
| Eshell V5.10.2 (abort with ^G) | |
| 1> crypto:start(). | |
| ok | |
| 2> H = crypto:hmac_init(sha, "test"). | |
| <<128,144,53,134,175,127,0,0,128,144,53,134,175,127,0,0,0, | |
| 0,0,0,0,0,0,0,0,0,0,0,0,...>> | |
| 3> H2 = crypto:hmac_update(H, "hello world"). | |
| <<128,144,53,134,175,127,0,0,128,144,53,134,175,127,0,0,0, | |
| 0,0,0,0,0,0,0,0,0,0,0,0,...>> | |
| 4> crypto:hmac_final(H2) == crypto:hmac_final(H). | |
| [1] 20604 segmentation fault (core dumped) erl | |
| % |
Fix done for OTP 17.0.
You will get a badarg exception instead of segmentation fault.
We can not support hmac context reuse as OpenSSL does not support it.
/Sverker, Erlang/OTP
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Is this something you want to do? That is, use the same hmac context several times (H in this case)? Or is it just something you discovered from a typo in your code?