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internal/zuc: supplement comments

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Sun Yimin 2025-04-03 10:40:06 +08:00 committed by GitHub
parent d3eece5560
commit 0ef30b3ab5
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1 changed files with 2 additions and 1 deletions
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internal/zuc/eea.go
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@ -23,7 +23,7 @@ type eea struct {
used uint64 // number of key bytes processed, current offset used uint64 // number of key bytes processed, current offset
states []*zucState32 // internal states for seek states []*zucState32 // internal states for seek
stateIndex int // current state index, for test usage stateIndex int // current state index, for test usage
bucketSize int bucketSize int // size of the state bucket, 0 means no bucket
} }
// NewCipher creates a stream cipher based on key and iv aguments. // NewCipher creates a stream cipher based on key and iv aguments.
@ -57,6 +57,7 @@ func NewCipherWithBucketSize(key, iv []byte, bucketSize int) (*eea, error) {
return c, nil return c, nil
} }
// reference GB/T 33133.2-2021 A.2
func construcIV4EEA(count, bearer, direction uint32) []byte { func construcIV4EEA(count, bearer, direction uint32) []byte {
iv := make([]byte, 16) iv := make([]byte, 16)
byteorder.BEPutUint32(iv, count) byteorder.BEPutUint32(iv, count)