prysm-pulse/encoding/ssz/hashers.go

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package ssz
import "encoding/binary"
Refactor dependencies, make Prysm "go gettable" (#6053) * Fix a few deps to work with go.mod, check in generated files * Update Gossipsub to 1.1 (#5998) * update libs * add new validators * add new deps * new set of deps * tls * further fix gossip update * get everything to build * clean up * gaz * fix build * fix all tests * add deps to images * imports Co-authored-by: rauljordan <raul@prysmaticlabs.com> * Beacon chain builds with go build * fix bazel * fix dep * lint * Add github action for testing go * on PR for any branch * fix libp2p test failure * Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test * Revert "Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test" This reverts commit 43676894ab01f03fe90a9b8ee3ecfbc2ec1ec4e4. * Compute and set proposer index instead of hard code * Add back go mod/sum, fix deps * go build ./... * Temporarily skip two tests * Fix kafka confluent patch * Fix kafka confluent patch * fix kafka build * fix kafka * Add info in DEPENDENCIES. Added a stub link for Why Bazel? until https://github.com/prysmaticlabs/documentation/issues/138 * Update fuzz ssz files as well * Update fuzz ssz files as well * getting closer * rollback rules_go and gazelle * fix gogo protobuf * install librdkafka-dev as part of github actions * Update kafka to a recent version where librkafkfa is not required for go modules * clarify comment * fix kafka build * disable go tests * comment * Fix geth dependencies for end to end * rename word * lint * fix docker Co-authored-by: Nishant Das <nishdas93@gmail.com> Co-authored-by: rauljordan <raul@prysmaticlabs.com> Co-authored-by: terence tsao <terence@prysmaticlabs.com>
2020-05-31 06:44:34 +00:00
// HashFn is the generic hash function signature.
type HashFn func(input []byte) [32]byte
// Hasher describes an interface through which we can
// perform hash operations on byte arrays,indices,etc.
type Hasher interface {
Hash(a []byte) [32]byte
Combi(a [32]byte, b [32]byte) [32]byte
MixIn(a [32]byte, i uint64) [32]byte
}
Refactor dependencies, make Prysm "go gettable" (#6053) * Fix a few deps to work with go.mod, check in generated files * Update Gossipsub to 1.1 (#5998) * update libs * add new validators * add new deps * new set of deps * tls * further fix gossip update * get everything to build * clean up * gaz * fix build * fix all tests * add deps to images * imports Co-authored-by: rauljordan <raul@prysmaticlabs.com> * Beacon chain builds with go build * fix bazel * fix dep * lint * Add github action for testing go * on PR for any branch * fix libp2p test failure * Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test * Revert "Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test" This reverts commit 43676894ab01f03fe90a9b8ee3ecfbc2ec1ec4e4. * Compute and set proposer index instead of hard code * Add back go mod/sum, fix deps * go build ./... * Temporarily skip two tests * Fix kafka confluent patch * Fix kafka confluent patch * fix kafka build * fix kafka * Add info in DEPENDENCIES. Added a stub link for Why Bazel? until https://github.com/prysmaticlabs/documentation/issues/138 * Update fuzz ssz files as well * Update fuzz ssz files as well * getting closer * rollback rules_go and gazelle * fix gogo protobuf * install librdkafka-dev as part of github actions * Update kafka to a recent version where librkafkfa is not required for go modules * clarify comment * fix kafka build * disable go tests * comment * Fix geth dependencies for end to end * rename word * lint * fix docker Co-authored-by: Nishant Das <nishdas93@gmail.com> Co-authored-by: rauljordan <raul@prysmaticlabs.com> Co-authored-by: terence tsao <terence@prysmaticlabs.com>
2020-05-31 06:44:34 +00:00
// HasherFunc defines a structure to hold a hash function and can be used for multiple rounds of
// hashing.
type HasherFunc struct {
b [64]byte
hashFunc HashFn
}
// NewHasherFunc is the constructor for the object
// that fulfills the Hasher interface.
func NewHasherFunc(h HashFn) *HasherFunc {
return &HasherFunc{
b: [64]byte{},
hashFunc: h,
}
}
// Hash utilizes the provided hash function for
// the object.
func (h *HasherFunc) Hash(a []byte) [32]byte {
return h.hashFunc(a)
}
Refactor dependencies, make Prysm "go gettable" (#6053) * Fix a few deps to work with go.mod, check in generated files * Update Gossipsub to 1.1 (#5998) * update libs * add new validators * add new deps * new set of deps * tls * further fix gossip update * get everything to build * clean up * gaz * fix build * fix all tests * add deps to images * imports Co-authored-by: rauljordan <raul@prysmaticlabs.com> * Beacon chain builds with go build * fix bazel * fix dep * lint * Add github action for testing go * on PR for any branch * fix libp2p test failure * Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test * Revert "Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test" This reverts commit 43676894ab01f03fe90a9b8ee3ecfbc2ec1ec4e4. * Compute and set proposer index instead of hard code * Add back go mod/sum, fix deps * go build ./... * Temporarily skip two tests * Fix kafka confluent patch * Fix kafka confluent patch * fix kafka build * fix kafka * Add info in DEPENDENCIES. Added a stub link for Why Bazel? until https://github.com/prysmaticlabs/documentation/issues/138 * Update fuzz ssz files as well * Update fuzz ssz files as well * getting closer * rollback rules_go and gazelle * fix gogo protobuf * install librdkafka-dev as part of github actions * Update kafka to a recent version where librkafkfa is not required for go modules * clarify comment * fix kafka build * disable go tests * comment * Fix geth dependencies for end to end * rename word * lint * fix docker Co-authored-by: Nishant Das <nishdas93@gmail.com> Co-authored-by: rauljordan <raul@prysmaticlabs.com> Co-authored-by: terence tsao <terence@prysmaticlabs.com>
2020-05-31 06:44:34 +00:00
// Combi appends the two inputs and hashes them.
func (h *HasherFunc) Combi(a, b [32]byte) [32]byte {
copy(h.b[:32], a[:])
copy(h.b[32:], b[:])
return h.Hash(h.b[:])
}
Refactor dependencies, make Prysm "go gettable" (#6053) * Fix a few deps to work with go.mod, check in generated files * Update Gossipsub to 1.1 (#5998) * update libs * add new validators * add new deps * new set of deps * tls * further fix gossip update * get everything to build * clean up * gaz * fix build * fix all tests * add deps to images * imports Co-authored-by: rauljordan <raul@prysmaticlabs.com> * Beacon chain builds with go build * fix bazel * fix dep * lint * Add github action for testing go * on PR for any branch * fix libp2p test failure * Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test * Revert "Fix TestProcessBlock_PassesProcessingConditions by updating the proposer index in test" This reverts commit 43676894ab01f03fe90a9b8ee3ecfbc2ec1ec4e4. * Compute and set proposer index instead of hard code * Add back go mod/sum, fix deps * go build ./... * Temporarily skip two tests * Fix kafka confluent patch * Fix kafka confluent patch * fix kafka build * fix kafka * Add info in DEPENDENCIES. Added a stub link for Why Bazel? until https://github.com/prysmaticlabs/documentation/issues/138 * Update fuzz ssz files as well * Update fuzz ssz files as well * getting closer * rollback rules_go and gazelle * fix gogo protobuf * install librdkafka-dev as part of github actions * Update kafka to a recent version where librkafkfa is not required for go modules * clarify comment * fix kafka build * disable go tests * comment * Fix geth dependencies for end to end * rename word * lint * fix docker Co-authored-by: Nishant Das <nishdas93@gmail.com> Co-authored-by: rauljordan <raul@prysmaticlabs.com> Co-authored-by: terence tsao <terence@prysmaticlabs.com>
2020-05-31 06:44:34 +00:00
// MixIn works like Combi, but using an integer as the second input.
func (h *HasherFunc) MixIn(a [32]byte, i uint64) [32]byte {
copy(h.b[:32], a[:])
copy(h.b[32:], make([]byte, 32))
binary.LittleEndian.PutUint64(h.b[32:], i)
return h.Hash(h.b[:])
}