Homomorphic hashing of object payload is not always necessary. There is
a need to provide ability to skip calculation. It's also worth to not
calculate it by default since current implementation of Tillich-Zemor
algorithm has large resource cost.
Do not calculate homomorphic checksum in `Slicer` methods by default.
Provide option to enable the calculation. Make tests to randomize
calculation flag and assert results according to it.
Refs #342.
Signed-off-by: Leonard Lyubich <leonard@morphbits.io>
Provide method to initialize payload stream as `io.WriteCloser`. This
approach will be useful for applications which need to control data
writing by themselves.
Refs #342.
Signed-off-by: Leonard Lyubich <leonard@morphbits.io>
There is a need to provide convenient function which allows to slice
user data into objects to be stored in NeoFS. The main challenge is to
produce objects compliant with the format described in the NeoFS
Specification.
Add `object/slicer` package. Export `Slicer` type which performs data
slicing.
Refs #342.
Signed-off-by: Leonard Lyubich <leonard@morphbits.io>
The expiration epoch is the _last_ valid epoch for an entity. Also, clarify
the expiration epoch meaning for tombstones and regular objects.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
Return `error` from all `ReadFromV2` methods in order to support
backward compatibility if message will be extended with some formatted
field.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Merge `address` package into `oid` one. Bring `session.Object`
implementation into conformity with the NeoFS API protocol.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Remove `signature` and `util/signature` packages. Re-implement their
functionality in new `crypto` package. Generalize the approach of
digital signature computation and verification by adding `Signer` and
`PublicKey` primitives similar to standard `crypto` package. Support
already exising in protocol signature schemes.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Do not return pointers from getters. Do not pass pointers to the methods
that does not modify the checksum. Add `Empty` method.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
All NeoFS object must have at least container and owner identifiers.
Add `InitCreation` function which write all required fields to the
object instance. Extend `Object` type docs with all the constructors.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Add `TypeLock` value to `Type` enum. Implement `Lock` type compatible
with corresponding message. Implement `ObjectLocked` and
`IrregularObjectLock` errors in `apistatus` package.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Allow `SignOption` to set 2 parameters:
1. Default signature scheme, which is used in case scheme is
unspecified.
2. Restrict scheme option which also checks that scheme is either
unspecified or equal to the restricted scheme. This is only used
for verification and is necessary because some of the signatures
are used in smart-contracts.
Also provide signature struct to sign/verify functions in helpers.
The constant names differ a bit from those in API because of linter
complaints.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This is done to prevent import cycles when `object` package needs any other
that requires `object.ID` or `object.Address`.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
