forked from TrueCloudLab/frostfs-api-go
79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
package pkg
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import (
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"bytes"
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"crypto/sha256"
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"github.com/nspcc-dev/neofs-api-go/v2/refs"
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)
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// Checksum represents v2-compatible checksum.
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type Checksum refs.Checksum
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// ChecksumType represents the enumeration
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// of checksum types.
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type ChecksumType uint8
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const (
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// ChecksumUnknown is an undefined checksum type.
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ChecksumUnknown ChecksumType = iota
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// ChecksumSHA256 is a SHA256 checksum type.
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ChecksumSHA256
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// ChecksumTZ is a Tillich-Zemor checksum type.
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ChecksumTZ
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)
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// NewChecksumFromV2 wraps v2 Checksum message to Checksum.
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func NewChecksumFromV2(cV2 *refs.Checksum) *Checksum {
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return (*Checksum)(cV2)
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}
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// NewVersion creates and initializes blank Version.
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//
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// Works similar as NewVersionFromV2(new(Version)).
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func NewChecksum() *Checksum {
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return NewChecksumFromV2(new(refs.Checksum))
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}
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// GetType returns checksum type.
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func (c *Checksum) GetType() ChecksumType {
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switch (*refs.Checksum)(c).GetType() {
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case refs.SHA256:
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return ChecksumSHA256
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case refs.TillichZemor:
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return ChecksumTZ
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default:
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return ChecksumUnknown
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}
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}
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// GetSum returns checksum bytes.
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func (c *Checksum) GetSum() []byte {
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return (*refs.Checksum)(c).GetSum()
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}
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// SetSHA256 sets checksum to SHA256 hash.
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func (c *Checksum) SetSHA256(v [sha256.Size]byte) {
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checksum := (*refs.Checksum)(c)
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checksum.SetType(refs.SHA256)
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checksum.SetSum(v[:])
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}
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// SetTillichZemor sets checksum to Tillich-Zemor hash.
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func (c *Checksum) SetTillichZemor(v [64]byte) {
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checksum := (*refs.Checksum)(c)
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checksum.SetType(refs.TillichZemor)
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checksum.SetSum(v[:])
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}
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func (c *Checksum) ToV2() *refs.Checksum {
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return (*refs.Checksum)(c)
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}
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func EqualChecksums(cs1, cs2 *Checksum) bool {
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return cs1.GetType() == cs2.GetType() && bytes.Equal(cs1.GetSum(), cs2.GetSum())
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}
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