yaole
43 lines
957 B
Go
43 lines
957 B
Go
package sm9
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import (
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"math/big"
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)
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// dup duplicates a byte slice b.
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func dup(b []byte) []byte {
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ret := make([]byte, len(b))
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copy(ret, b)
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return ret
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}
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// pairingThenMul computes e = e(p,q)^k
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func pairingThenMul(p *G1, q *G2, k *big.Int) *GT {
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e := Pairing(p, q)
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return e.ScalarMult(e, k)
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}
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// mulG1ThenPairing computes e = e(p,q)^k = e(kp,q)
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func mulG1ThenPairing(p *G1, q *G2, k *big.Int) *GT {
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p1 := (&G1{}).ScalarMult(p, k)
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return Pairing(p1, q)
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}
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// mulG2ThenPairing computes e = e(p,q)^k = e(p,kq)
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func mulG2ThenPairing(p *G1, q *G2, k *big.Int) *GT {
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q2 := (&G2{}).ScalarMult(q, k)
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return Pairing(p, q2)
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}
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// mulG1BaseThenPairing computes e = e(p,q)^k = e(kp,q)
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func mulG1BaseThenPairing(e *GT, q *G2, k *big.Int) {
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p1 := (&G1{}).ScalarBaseMult(k)
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pairing(e, p1, q)
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}
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// mulG2BaseThenPairing computes e = e(p,q)^k = e(kp,q)
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func mulG2BaseThenPairing(p *G1, k *big.Int) *GT {
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q2 := (&G2{}).ScalarBaseMult(k)
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return Pairing(p, q2)
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}
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