Google Play sign sha1 转 Facebook login 需要的 hashkey

echo 33:4E:48:84:19:50:3A:1F:63:A6:0F:F6:A1:C2:31:E5:01:38:55:2E | xxd -r -p | openssl base64

输出

M05IhBlQOh9jpg/2ocIx5QE4VS4=

 或者用 android 代码来计算

byte[] sha1 = {
    0x3B, (byte)0xDA, (byte)0xA0, 0x5B, 0x4F, 0x35, 0x71, 0x02, 0x4E, 0x27, 0x22, (byte)0xB9, (byte)0xAc, (byte)0xB2, 0x77, 0x2F, (byte)0x9D, (byte)0xA9, (byte)0x9B, (byte)0xD9
};
Log.e("keyhash", Base64.encodeToString(sha1, Base64.NO_WRAP));