ea3c7e5 test: Remove libssl-dev packages from CI scripts (Wladimir J. van der Laan)
7ea5526 test: remove lsan suppression for libcrypto (Wladimir J. van der Laan)
2d70665 build: remove libcrypto as internal dependency in libbitcoinconsensus.pc (Wladimir J. van der Laan)
278751e doc: Remove ssl as a required dependency from build-unix (Wladimir J. van der Laan)

Pull request description:

  Some doc and build cleanups following #17265.

  I intentionally left the libssl-dev install in `gitian-win-signer.yml`, as it's necessary for the ossl signer.

ACKs for top commit:
  MarcoFalke:
    ACK ea3c7e5 🗯
  jamesob:
    ACK ea3c7e5
  practicalswift:
    ACK ea3c7e5 - nice!
  fanquake:
    ACK ea3c7e5 - thanks.

Tree-SHA512: 67ea35bdd6d6e512d69e6734713534c88cae033a2ed695677ea15c3e3d5ff570374e342775c88e60877fa43a19047853e7b2a433e2c9a4349a5c423726a7457e

…d build

ea3c7e5 test: Remove libssl-dev packages from CI scripts (Wladimir J. van der Laan)
7ea5526 test: remove lsan suppression for libcrypto (Wladimir J. van der Laan)
2d70665 build: remove libcrypto as internal dependency in libbitcoinconsensus.pc (Wladimir J. van der Laan)
278751e doc: Remove ssl as a required dependency from build-unix (Wladimir J. van der Laan)

Pull request description:

  Some doc and build cleanups following bitcoin#17265.

  I intentionally left the libssl-dev install in `gitian-win-signer.yml`, as it's necessary for the ossl signer.

ACKs for top commit:
  MarcoFalke:
    ACK ea3c7e5 🗯
  jamesob:
    ACK bitcoin@ea3c7e5
  practicalswift:
    ACK ea3c7e5 - nice!
  fanquake:
    ACK ea3c7e5 - thanks.

Tree-SHA512: 67ea35bdd6d6e512d69e6734713534c88cae033a2ed695677ea15c3e3d5ff570374e342775c88e60877fa43a19047853e7b2a433e2c9a4349a5c423726a7457e

Remove OpenSSL

Includes changes cherry-picked from the following upstream PRs:

- bitcoin/bitcoin#7095
- bitcoin/bitcoin#17165
  - Only the commit removing SSL lib detection (we have long since removed the rest).
- bitcoin/bitcoin#17265
  - We had already migrated away from OpenSSL for randomness.
- bitcoin/bitcoin#17515
  - Only the second commit.

Remove OpenSSL

Includes changes cherry-picked from the following upstream PRs:

- bitcoin/bitcoin#7095
- bitcoin/bitcoin#11024
- bitcoin/bitcoin#17165
  - Only the commit removing SSL lib detection (we have long since removed the rest).
- bitcoin/bitcoin#17265
  - We had already migrated away from OpenSSL for randomness.
- bitcoin/bitcoin#17515
  - Only the second commit.

Closes #145.

…d build

ea3c7e5 test: Remove libssl-dev packages from CI scripts (Wladimir J. van der Laan)
7ea5526 test: remove lsan suppression for libcrypto (Wladimir J. van der Laan)
2d70665 build: remove libcrypto as internal dependency in libbitcoinconsensus.pc (Wladimir J. van der Laan)
278751e doc: Remove ssl as a required dependency from build-unix (Wladimir J. van der Laan)

Pull request description:

  Some doc and build cleanups following bitcoin#17265.

  I intentionally left the libssl-dev install in `gitian-win-signer.yml`, as it's necessary for the ossl signer.

ACKs for top commit:
  MarcoFalke:
    ACK ea3c7e5 🗯
  jamesob:
    ACK bitcoin@ea3c7e5
  practicalswift:
    ACK ea3c7e5 - nice!
  fanquake:
    ACK ea3c7e5 - thanks.

Tree-SHA512: 67ea35bdd6d6e512d69e6734713534c88cae033a2ed695677ea15c3e3d5ff570374e342775c88e60877fa43a19047853e7b2a433e2c9a4349a5c423726a7457e

5563331 Snap: remove openssl from nightly snapcraft build requirements (Fuzzbawls)
686bfad doc: Add OpenSSL removal to release notes (Fuzzbawls)
f669248 ci: remove OpenSSL installation (Fuzzbawls)
9660aec doc: remove OpenSSL from build instructions and licensing info (Fuzzbawls)
9b2e35d depends: remove OpenSSL package (Fuzzbawls)
9a81d8e CMake: remove OpenSSL detection and libs (Fuzzbawls)
53576bc build: remove OpenSSL detection and libs (fanquake)
5f30c2b Stop using OpenSSL's sha hashing in bip38 code (Fuzzbawls)
d531bf2 Use our own hmac_sha256 instead of OpenSSL's in scrypt.cpp (Fuzzbawls)
b687f8e Use ctaes instead of OpenSSL's AES in bip38 code (Fuzzbawls)
86c978a Remove unused openssl includes (Fuzzbawls)
ab830e5 remove unused EncodeBase64Secure (Fuzzbawls)
690c938 random: Remove remaining OpenSSL calls and locking infrastructure (fanquake)
602c0b2 random: stop retrieving random bytes from OpenSSL (fanquake)
b1c8396 random: stop feeding RNG output back into OpenSSL (fanquake)

Pull request description:

  The natural follow-up to #2278, #2286, and #2288. With these three PRs merged, there are only a few minor pieces of code that still rely on OpenSSL:

  - a call to `RAND_bytes` during the ::SLOW path of ProcRand
  - feeding output from our RNG back into OpenSSL via `RAND_add` during the ::SLOW and ::SLEEP paths.
  - an unused function in `utilstrencodings.cpp` (`DecodeBase64Secure()`, now removed)
  - some stale (un-needed/un-used) header includes
  - bip38 exclusive usages including the following:
    - using OpenSSL's AES for encryption, now switched to using ctaes
    - using OpenSSL to do HMAC_SHA256 hashing in `crypto/scrypt.cpp`, now switched to using our native HMAC_SHA256 header
    - an unused function in `hash.h` (`std::string Hash(std::string input)`), now removed
    - a SHA256 Hash function to compute a void pointer, switched to using template objects

  Upstream PRs backported: bitcoin#17265, bitcoin#17515, and bitcoin#18825

  The changes to bip38 were tested by doing two-way encryption/decryption between `master` and this PR

ACKs for top commit:
  random-zebra:
    ACK 5563331
  furszy:
    k, ACK 5563331 and merging..

Tree-SHA512: bfa7445d7b153bb5ea04b7b52bbedaa07ad5acd1a56221425fa5fb7c20ecbf90f392c85273734ad2a277d4fffc43b10a7a660924a8a41c175ba2fc68e6cf820f