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Diffstat (limited to 'changes/ticket29536')
| -rw-r--r-- | changes/ticket29536 | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/changes/ticket29536 b/changes/ticket29536 new file mode 100644 index 0000000000..a5ae26b701 --- /dev/null +++ b/changes/ticket29536 @@ -0,0 +1,9 @@ + o Minor features (performance, RNG): + - Tor now constructs a fast secure pseudorandom number generator for + each thread, to use for cases where performance is critical. This PRNG + is based on AES-CTR, using a buffering construction similar to + libottery and the (newer) OpenBSD arc4random() code. It outperforms + OpenSSL 1.1.1a's CSPRNG by roughly a factor of 100 for small outputs. + Although we believe it to be cryptographically strong, we are only + using it when necessary for reasonable performance. Implements tickets + 29023 and 29536. |