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key.go
48 lines (42 loc) · 1.01 KB
/
key.go
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package encoding
import (
"bytes"
"strings"
)
func FormatPublicKey(raw string) (result []byte) {
return formatKey(raw, "-----BEGIN PUBLIC KEY-----", "-----END PUBLIC KEY-----")
}
func FormatPrivateKey(raw string) (result []byte) {
return formatKey(raw, "-----BEGIN RSA PRIVATE KEY-----", "-----END RSA PRIVATE KEY-----")
}
func formatKey(raw, prefix, suffix string) (result []byte) {
if raw == "" {
return nil
}
raw = strings.Replace(raw, prefix, "", 1)
raw = strings.Replace(raw, suffix, "", 1)
raw = strings.Replace(raw, " ", "", -1)
raw = strings.Replace(raw, "\n", "", -1)
raw = strings.Replace(raw, "\r", "", -1)
raw = strings.Replace(raw, "\t", "", -1)
var ll = 64
var sl = len(raw)
var c = sl / ll
if sl%ll > 0 {
c = c + 1
}
var buf bytes.Buffer
buf.WriteString(prefix + "\n")
for i := 0; i < c; i++ {
var b = i * ll
var e = b + ll
if e > sl {
buf.WriteString(raw[b:])
} else {
buf.WriteString(raw[b:e])
}
buf.WriteString("\n")
}
buf.WriteString(suffix)
return buf.Bytes()
}