[jdk17u-dev] RFR: 8293858: Change PKCS7 code to use default SecureRandom impl instead of SHA1PRNG [v2]

[Goetz Lindenmaier]

> I backport this for parity with 17.0.8-oracle.

Goetz Lindenmaier has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'openjdk:master' into GoeLin-backport-21571457
 - Backport 2157145766f9789ade0940e9ae1715a3b74d508b

-------------

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1284/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1284/files/ab4d5497..c9aa6d23

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1284&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1284&range=00-01

  Stats: 154 lines in 3 files changed: 152 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1284.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1284/head:pull/1284

PR: https://git.openjdk.org/jdk17u-dev/pull/1284