JaehaerysNL/Picocrypt
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Reed Solomon almost works

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Evan Su 2021-08-03 21:08:27 -04:00 committed by GitHub
parent 12c141bcad
commit a37d9c06a8
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 50 additions and 16 deletions
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66
src/unstable/Picocrypt.go
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@ -1035,6 +1035,7 @@ func work(){
fast = flags[0]==1 fast = flags[0]==1
paranoid = flags[1]==1 paranoid = flags[1]==1
keyfile = flags[2]==1 keyfile = flags[2]==1
reedsolo = flags[3]==1
salt = make([]byte,48) salt = make([]byte,48)
fin.Read(salt) fin.Read(salt)
@ -1234,10 +1235,10 @@ func work(){
//var _data []byte //var _data []byte
var data []byte var data []byte
if reedsolo{ if mode=="decrypt"&&reedsolo{
data = make([]byte,1048576)
}else{
data = make([]byte,1114112) data = make([]byte,1114112)
}else{
data = make([]byte,1048576)
} }
size,err := fin.Read(data) size,err := fin.Read(data)
@ -1258,30 +1259,43 @@ func work(){
} }
chacha20.XORKeyStream(_data,data) chacha20.XORKeyStream(_data,data)
if reedsolo{ if reedsolo{
copy(data,_data)
_data = nil
if len(data)==1048576{ if len(data)==1048576{
copy(data,_data)
_data = nil
for i:=0;i<1048576;i+=128{ for i:=0;i<1048576;i+=128{
tmp := data[i:i+128] tmp := data[i:i+128]
tmp := rsEncode(rs128,tmp) tmp = rsEncode(rs128,tmp)
for _,j := range tmp{ /*for _,j := range tmp{
_data = append(_data,j) _data = append(_data,j)
} }*/
_data = append(_data,tmp...)
} }
}else{ }else{
chunks := math.Floor(float64(len(data))/128)
for i:=0;float64(i)<chunks;i++{
tmp := data[i*128:(i+1)*128]
tmp = rsEncode(rs128,tmp)
/*for _,j := range tmp{
_data = append(_data,j)
}*/
_data = append(_data,tmp...)
}
tmp := data[int(chunks*128):]
/*for _,j := range rsEncode(rs128,pad(tmp)){
_data = append(_data,j)
}*/
_data = append(_data,rsEncode(rs128,pad(tmp))...)
} }
} }
mac.Write(_data) mac.Write(_data)
}else{ }else{
mac.Write(data) mac.Write(data)
var _data []byte
if reedsolo{ if reedsolo{
if len(data)==1114112{ copy(_data,data)
copy(_data,data) data = nil
data = nil if len(_data)==1114112{
for i:=0;i<1114112;i+=136{ for i:=0;i<1114112;i+=136{
tmp := data[i:i+136] tmp := _data[i:i+136]
tmp,err := rsDecode(rs128,tmp) tmp,err := rsDecode(rs128,tmp)
if err!=nil{ if err!=nil{
if keep{ if keep{
@ -1295,10 +1309,30 @@ func work(){
return return
} }
} }
for _,j := range tmp{ /*for _,j := range tmp{
data = append(data,j) data = append(data,j)
} }*/
data = append(data,tmp...)
} }
}else{
chunks := math.Floor(float64(len(_data))/136)
for i:=0;float64(i)<chunks-1;i++{
tmp := _data[i*136:(i+1)*136]
tmp,err = rsDecode(rs128,tmp)
fmt.Println(err)
/*for _,j := range tmp{
data = append(data,j)
}*/
data = append(data,tmp...)
}
tmp := _data[int(chunks)*136:]
var err error
tmp,err = rsDecode(rs128,unpad(tmp))
fmt.Println(err)
/*for _,j := range tmp{
data = append(data,j)
}*/
data = append(data,tmp...)
} }
} }
chacha20.XORKeyStream(_data,data) chacha20.XORKeyStream(_data,data)