sangge/tpre-python
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Merge pull request 'fix: 修改了参数X_A，因为值是固定的，直接读取list中的值' (#4) from ccyj/mimajingsai:main into main

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Reviewed-on: sangge/mimajingsai#4
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sangge 2023-10-16 22:33:02 +08:00
commit 2dc927617d
1 changed files with 4 additions and 4 deletions
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src/tpre.py
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@ -388,13 +388,13 @@ def DecapsulateFrags(sk_B:int,pk_A:Tuple[int,int],cFrags:Tuple[Tuple[Tuple[int,i
Elist = [] Elist = []
Vlist = [] Vlist = []
idlist = [] idlist = []
Xalist = [] X_Alist = []
t = 0 t = 0
for cfrag in cFrags: # Ei,Vi,id,Xa = cFrag for cfrag in cFrags: # Ei,Vi,id,Xa = cFrag
Elist.append(cfrag[0]) Elist.append(cfrag[0])
Vlist.append(cfrag[1]) Vlist.append(cfrag[1])
idlist.append(cfrag[2]) idlist.append(cfrag[2])
Xalist.append(cfrag[3]) X_Alist.append(cfrag[3])
t = t+1 # 总共有t个片段，t为阈值 t = t+1 # 总共有t个片段，t为阈值
pkab = multiply(pk_A,sk_B) # pka^b pkab = multiply(pk_A,sk_B) # pka^b
@ -422,8 +422,8 @@ def DecapsulateFrags(sk_B:int,pk_A:Tuple[int,int],cFrags:Tuple[Tuple[Tuple[int,i
Vk = multiply(Vlist[k],bis[k]) Vk = multiply(Vlist[k],bis[k])
E2 = add(Ek,E2) E2 = add(Ek,E2)
V2 = add(Vk,V2) V2 = add(Vk,V2)
Xab = multiply(Xa,b) # Xa^b X_Ab = multiply(Xalist[0],b) # X_A^b X_A 的值是随机生成的xa，通过椭圆曲线上的倍点运算生成的固定的值
d = hash3((Xa,pk_B,Xab)) d = hash3((Xalist[0],pk_B,X_Ab))
EV = add(E2,V2) # E2 + V2 EV = add(E2,V2) # E2 + V2
EVd = multiply(EV,d) # (E2 + V2)^d EVd = multiply(EV,d) # (E2 + V2)^d
K = KDF(EVd) K = KDF(EVd)