diff options
Diffstat (limited to 'pkg/types/util.go')
-rw-r--r-- | pkg/types/util.go | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/pkg/types/util.go b/pkg/types/util.go new file mode 100644 index 0000000..3cd7dfa --- /dev/null +++ b/pkg/types/util.go @@ -0,0 +1,21 @@ +package types + +import ( + "crypto/sha256" +) + +const ( + LeafHashPrefix = 0x00 +) + +func Hash(buf []byte) *[HashSize]byte { + var ret [HashSize]byte + hash := sha256.New() + hash.Write(buf) + copy(ret[:], hash.Sum(nil)) + return &ret +} + +func HashLeaf(buf []byte) *[HashSize]byte { + return Hash(append([]byte{LeafHashPrefix}, buf...)) +} |