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package handshake
import "encoding/binary"
func decodeCipherSuiteIDs(buf []byte) ([]uint16, error) {
if len(buf) < 2 {
return nil, errBufferTooSmall
}
cipherSuitesCount := int(binary.BigEndian.Uint16(buf[0:])) / 2
rtrn := make([]uint16, cipherSuitesCount)
for i := 0; i < cipherSuitesCount; i++ {
if len(buf) < (i*2 + 4) {
return nil, errBufferTooSmall
}
rtrn[i] = binary.BigEndian.Uint16(buf[(i*2)+2:])
}
return rtrn, nil
}
func encodeCipherSuiteIDs(cipherSuiteIDs []uint16) []byte {
out := []byte{0x00, 0x00}
binary.BigEndian.PutUint16(out[len(out)-2:], uint16(len(cipherSuiteIDs)*2))
for _, id := range cipherSuiteIDs {
out = append(out, []byte{0x00, 0x00}...)
binary.BigEndian.PutUint16(out[len(out)-2:], id)
}
return out
}
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