1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
package common
import "fmt"
// Keeps mapping: SIDH prime field ID to domain parameters
var sidhParams = make(map[uint8]SidhParams)
// Params returns domain parameters corresponding to finite field and identified by
// `id` provided by the caller. Function panics in case `id` wasn't registered earlier.
func Params(id uint8) *SidhParams {
if val, ok := sidhParams[id]; ok {
return &val
}
panic("sidh: SIDH Params ID unregistered")
}
// Registers SIDH parameters for particular field.
func Register(id uint8, p *SidhParams) {
if _, ok := sidhParams[id]; ok {
msg := fmt.Sprintf("sidh: Field with id %d already registered", id)
panic(msg)
}
sidhParams[id] = *p
}
|
