This updates go.mod for the addition of golang.org/x/sync.

This removes auto-configuration of the snap.*.ethdisco.net DNS discovery tree.
Since measurements have shown that > 75% of nodes in all.*.ethdisco.net support
snap, we have decided to retire the dedicated index for snap and just use the eth
tree instead.

The dial iterators of eth and snap now use the same DNS tree in the default configuration,
so both iterators should use the same DNS discovery client instance. This ensures that
the record cache and rate limit are shared. Records will not be requested multiple times.

While testing the change, I noticed that duplicate DNS requests do happen even
when the client instance is shared. This is because the two iterators request the tree
root, link tree root, and first levels of the tree in lockstep. To avoid this problem, the
change also adds a singleflight.Group instance in the client. When one iterator
attempts to resolve an entry which is already being resolved, the singleflight object
waits for the existing resolve call to finish and returns the entry to both places.

Add more cross-fuzzers to fuzz bls with gnark versus geth's own bls12-381 library

This fixes the OpenBSD/arm64 build.

This upgrades the cloudflare client dependency to v0.14.0. The new
version changes the API because all methods now require a context
parameter. This change also reduces the log level of the 'Skipping...'
message to debug, following a similar change in the AWS deployer.

This updates the DNS deployer to use AWS SDK v2. Migration is relatively
seamless, although there were two locations that required a slightly
different approach to achieve the same results. In particular, waiting for
DNS change propagation is very different with SDK v2. 

This change also optimizes DNS updates by publishing all changes before
waiting for propagation.

This pulls in a fix to skip the broadcast on interfaces which are down.

This pulls in a fix for a corruption issue when the process crashes
while a new manifest file is being added.

This replaces the github.com/pborman/uuid dependency with
github.com/google/uuid because the former is only a wrapper for
the latter (since v1.0.0).

Co-authored-by: Felix Lange <fjl@twurst.com>

* cmd, core, tests: initial state pruner

core: fix db inspector

cmd/geth: add verify-state

cmd/geth: add verification tool

core/rawdb: implement flatdb

cmd, core: fix rebase

core/state: use new contract code layout

core/state/pruner: avoid deleting genesis state

cmd/geth: add helper function

core, cmd: fix extract genesis

core: minor fixes

contracts: remove useless

core/state/snapshot: plugin stacktrie

core: polish

core/state/snapshot: iterate storage concurrently

core/state/snapshot: fix iteration

core: add comments

core/state/snapshot: polish code

core/state: polish

core/state/snapshot: rebase

core/rawdb: add comments

core/rawdb: fix tests

core/rawdb: improve tests

core/state/snapshot: fix concurrent iteration

core/state: run pruning during the recovery

core, trie: implement martin's idea

core, eth: delete flatdb and polish pruner

trie: fix import

core/state/pruner: add log

core/state/pruner: fix issues

core/state/pruner: don't read back

core/state/pruner: fix contract code write

core/state/pruner: check root node presence

cmd, core: polish log

core/state: use HEAD-127 as the target

core/state/snapshot: improve tests

cmd/geth: fix verification tool

cmd/geth: use HEAD as the verification default target

all: replace the bloomfilter with martin's fork

cmd, core: polish code

core, cmd: forcibly delete state root

core/state/pruner: add hash64

core/state/pruner: fix blacklist

core/state: remove blacklist

cmd, core: delete trie clean cache before pruning

cmd, core: fix lint

cmd, core: fix rebase

core/state: fix the special case for clique networks

core/state/snapshot: remove useless code

core/state/pruner: capping the snapshot after pruning

cmd, core, eth: fixes

core/rawdb: update db inspector

cmd/geth: polish code

core/state/pruner: fsync bloom filter

cmd, core: print warning log

core/state/pruner: adjust the parameters for bloom filter

cmd, core: create the bloom filter by size

core: polish

core/state/pruner: sanitize invalid bloomfilter size

cmd: address comments

cmd/geth: address comments

cmd/geth: address comment

core/state/pruner: address comments

core/state/pruner: rename homedir to datadir

cmd, core: address comments

core/state/pruner: address comment

core/state: address comments

core, cmd, tests: address comments

core: address comments

core/state/pruner: release the iterator after each commit

core/state/pruner: improve pruner

cmd, core: adjust bloom paramters

core/state/pruner: fix lint

core/state/pruner: fix tests

core: fix rebase

core/state/pruner: remove atomic rename

core/state/pruner: address comments

all: run go mod tidy

core/state/pruner: avoid false-positive for the middle state roots

core/state/pruner: add checks for middle roots

cmd/geth: replace crit with error

* core/state/pruner: fix lint

* core: drop legacy bloom filter

* core/state/snapshot: improve pruner

* core/state/snapshot: polish concurrent logs to report ETA vs. hashes

* core/state/pruner: add progress report for pruning and compaction too

* core: fix snapshot test API

* core/state: fix some pruning logs

* core/state/pruner: support recovering from bloom flush fail

Co-authored-by: Péter Szilágyi <peterke@gmail.com>

This pr adds consensys' gurvy bn256 variant into the code for differential fuzzing.

This change allows users to set a custom path prefix on which to mount the http-rpc
or ws-rpc handlers via the new flags --http.rpcprefix and --ws.rpcprefix.

Fixes #21826

Co-authored-by: Felix Lange <fjl@twurst.com>

* accounts/scwallet: use go-ethereum crypto instead of go-ecdh

github.com/wsddn/go-ecdh is a wrapper package for ECDH functionality
with any elliptic curve.

Since 'generic' ECDH is not required in accounts/scwallet (the curve is
always secp256k1), we can just use the standard library functionality
and our own crypto libraries to perform ECDH and save a dependency.

* Update accounts/scwallet/securechannel.go

Co-authored-by: Guillaume Ballet <gballet@gmail.com>

* Use the correct key

Co-authored-by: Guillaume Ballet <gballet@gmail.com>

This updates the goupnp dependency, fixing huin/goupnp#33

This updates go module dependencies as discussed in #22050.

It takes three lines of code to get to runtime.nanotime, no need to
pull a dependency for that.

* deps: use improved bloom filter implementation

* eth/handler, trie: use 4 keys for syncbloom + minor fixes

* eth/protocols, trie: revert change on syncbloom method signature

This updates the snappy library depency to include a fix for
a Go 1.16 incompatibility issue. 

* internal/build: implement signify's signing func
* Add signify to the ci utility
* fix output file format
* Add unit test for signify
* holiman's + travis' feedback
* internal/build: verify signify's output
* crypto: move signify to common dir
* use go-minisign to verify binaries
* more holiman feedback
* crypto, ci: support minisign output
* only accept one-line trusted comments
* configurable untrusted comments
* code cleanup in tests
* revert to use ed25519 from the stdlib
* bug: fix for empty untrusted comments
* write timestamp as comment if trusted comment isn't present
* rename line checker to commentHasManyLines
* crypto: added signify fuzzer (#6)
* crypto: added signify fuzzer
* stuff
* crypto: updated signify fuzzer to fuzz comments
* crypto: repro signify crashes
* rebased fuzzer on build-signify branch
* hide fuzzer behind gofuzz build flag
* extract key data inside a single function
* don't treat \r as a newline
* travis: fix signing command line
* do not use an external binary in tests
* crypto: move signify to crypto/signify
* travis: fix formatting issue
* ci: fix linter build after package move

Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>

* (mobile): Adds string representations for types

* mobile: better interfaces add stringer to types

Co-authored-by: sarath <sarath@melvault.com>

* tests/fuzzers/abi: added abi fuzzer

* accounts/abi: fixed issues found by fuzzing

* tests/fuzzers/abi: update fuzzers, added repro test

* tests/fuzzers/abi: renamed abi_fuzzer to abifuzzer

* tests/fuzzers/abi: updated abi fuzzer

* tests/fuzzers/abi: updated abi fuzzer

* accounts/abi: minor style fix

* go.mod: added go-fuzz dependency

* tests/fuzzers/abi: updated abi fuzzer

* tests/fuzzers/abi: make linter happy

* tests/fuzzers/abi: make linter happy

* tests/fuzzers/abi: comment out false positives

* go.mod | goleveldb latest update

* go.mod update

* leveldb options

* go.mod: double check

Co-authored-by: Péter Szilágyi <peterke@gmail.com>

This adds a test suite for discovery v4. The test suite is a port of the Hive suite for
discovery, and will replace the current suite on Hive soon-ish. The tests can be
run locally with this command:

    devp2p discv4 test -remote enode//...

Co-authored-by: Felix Lange <fjl@twurst.com>

* common/fdlimit: build on DragonflyBSD

* review feedback

* core/vm: use fixed uint256 library instead of big

* core/vm: remove intpools

* core/vm: upgrade uint256, fixes uint256.NewFromBig

* core/vm: use uint256.Int by value in Stack

* core/vm: upgrade uint256 to v1.0.0

* core/vm: don't preallocate space for 1024 stack items (only 16)

Co-authored-by: Martin Holst Swende <martin@swende.se>

* crypto: add bls12-381 elliptic curve wrapper

* params: add bls12-381 precompile gas parameters

* core/vm: add bls12-381 precompiles

* core/vm: add bls12-381 precompile tests

* go.mod, go.sum: use latest bls12381 lib

* core/vm: move point encode/decode functions to base library

* crypto/bls12381: introduce bls12-381 library init function

* crypto/bls12381: import bls12381 elliptic curve implementation

* go.mod, go.sum: remove bls12-381 library

* remove unsued frobenious coeffs

supress warning for inp that used in asm

* add mappings tests for zero inputs

fix swu g2 minus z inverse constant

* crypto/bls12381: fix typo

* crypto/bls12381: better comments for bls12381 constants

* crypto/bls12381: swu, use single conditional for e2

* crypto/bls12381: utils, delete empty line

* crypto/bls12381: utils, use FromHex for string to big

* crypto/bls12381: g1, g2, strict length check for FromBytes

* crypto/bls12381: field_element, comparision changes

* crypto/bls12381: change swu, isogeny constants with hex values

* core/vm: fix point multiplication comments

* core/vm: fix multiexp gas calculation and lookup for g1 and g2

* core/vm: simpler imput length check for multiexp and pairing precompiles

* core/vm: rm empty multiexp result declarations

* crypto/bls12381: remove modulus type definition

* crypto/bls12381: use proper init function

* crypto/bls12381: get rid of new lines at fatal desciprtions

* crypto/bls12-381: fix no-adx assembly multiplication

* crypto/bls12-381: remove old config function

* crypto/bls12381: update multiplication backend

this commit changes mul backend to 6limb eip1962 backend

mul assign operations are dropped

* core/vm/contracts_tests: externalize test vectors for precompiles

* core/vm/contracts_test: externalize failure-cases for precompiles

* core/vm: linting

* go.mod: tiny up sum file

* core/vm: fix goimports linter issues

* crypto/bls12381: build tags for plain ASM or ADX implementation

Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>

* replace gosigar with gopsutil

* removed check for whether GOOS is openbsd

* removed accidental import of runtime

* potential fix for difference in units between gosig and gopsutil

* fixed lint error

* remove multiplication factor

* uses cpu.ClocksPerSec as the multiplication factor

* changed dependency from shirou to renaynay (#20)

* updated dep

* switching back from using renaynay fork to using upstream as PRs were merged on upstream

* removed empty line

* optimized imports

* tidied go mod