[go] math/rand/v2: document PCG and ChaCha8 tradeoffs

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Jun 25, 2026, 8:13:22 PM (2 days ago) Jun 25

to Harjoth Khara, Gerrit Bot, goph...@pubsubhelper.golang.org, golang-...@googlegroups.com, golang...@luci-project-accounts.iam.gserviceaccount.com, Roland Shoemaker, Dmitri Shuralyov, Dmitri Shuralyov, Robert Griesemer, Robert Griesemer, Filippo Valsorda, golang-co...@googlegroups.com

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Change information

Commit message:

math/rand/v2: document PCG and ChaCha8 tradeoffs

Document that ChaCha8 is the general-purpose source resistant to
prediction, and that PCG is faster but unfit for security-relevant
purposes.

Fixes #79891

Change-Id: Ic4133dd9bd860c2643c622f799f2c54b1678e4f0

GitHub-Last-Rev: 93d225108aaef7862f4f148cd926f420e58af831

GitHub-Pull-Request: golang/go#79926

Reviewed-on: https://go-review.googlesource.com/c/go/+/789040

LUCI-TryBot-Result: golang...@luci-project-accounts.iam.gserviceaccount.com <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Dmitri Shuralyov <dmit...@google.com>

Reviewed-by: Roland Shoemaker <rol...@golang.org>

Auto-Submit: Roland Shoemaker <rol...@golang.org>

Files:

M src/math/rand/v2/rand.go

Change size: XS

Delta: 1 file changed, 3 insertions(+), 0 deletions(-)

Branch: refs/heads/master

Submit Requirements:

Code-Review: +2 by Roland Shoemaker, +1 by Dmitri Shuralyov
TryBots-Pass: LUCI-TryBot-Result+1 by golang...@luci-project-accounts.iam.gserviceaccount.com

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