15 	for (unsigned int i = 0; i < 4; ++i)  in encode_base64()  local
16 		dest[i] = input[i] + 'A'  in encode_base64()
17 			  + (((25 - input[i]) >> 8) & 6)  in encode_base64()
18 			  - (((51 - input[i]) >> 8) & 75)  in encode_base64()
19 			  - (((61 - input[i]) >> 8) & 15)  in encode_base64()
20 			  + (((62 - input[i]) >> 8) & 3);  in encode_base64()
26 	unsigned int i;  in key_to_base64()  local
28 	for (i = 0; i < WG_KEY_LEN / 3; ++i)  in key_to_base64()
29 		encode_base64(&base64[i * 4], &key[i * 3]);  in key_to_base64()
30 	encode_base64(&base64[i * 4], (const uint8_t[]){ key[i * 3 + 0], key[i * 3 + 1], 0 });  in key_to_base64()
39 	for (unsigned int i = 0; i < 4; ++i)  in decode_base64()  local
41 			    + ((((('A' - 1) - src[i]) & (src[i] - ('Z' + 1))) >> 8) & (src[i] - 64))  in decode_base64()
42 			    + ((((('a' - 1) - src[i]) & (src[i] - ('z' + 1))) >> 8) & (src[i] - 70))  in decode_base64()
43 			    + ((((('0' - 1) - src[i]) & (src[i] - ('9' + 1))) >> 8) & (src[i] + 5))  in decode_base64()
44 			    + ((((('+' - 1) - src[i]) & (src[i] - ('+' + 1))) >> 8) & 63)  in decode_base64()
45 			    + ((((('/' - 1) - src[i]) & (src[i] - ('/' + 1))) >> 8) & 64)  in decode_base64()
46 			) << (18 - 6 * i);  in decode_base64()
52 	unsigned int i;  in key_from_base64()  local
59 	for (i = 0; i < WG_KEY_LEN / 3; ++i) {  in key_from_base64()
60 		val = decode_base64(&base64[i * 4]);  in key_from_base64()
62 		key[i * 3 + 0] = (val >> 16) & 0xff;  in key_from_base64()
63 		key[i * 3 + 1] = (val >> 8) & 0xff;  in key_from_base64()
64 		key[i * 3 + 2] = val & 0xff;  in key_from_base64()
66 …val = decode_base64((const char[]){ base64[i * 4 + 0], base64[i * 4 + 1], base64[i * 4 + 2], 'A' }…  in key_from_base64()
68 	key[i * 3 + 0] = (val >> 16) & 0xff;  in key_from_base64()
69 	key[i * 3 + 1] = (val >> 8) & 0xff;  in key_from_base64()
76 	unsigned int i;  in key_to_hex()  local
78 	for (i = 0; i < WG_KEY_LEN; ++i) {  in key_to_hex()
79 		hex[i * 2] = 87U + (key[i] >> 4) + ((((key[i] >> 4) - 10U) >> 8) & ~38U);  in key_to_hex()
80 		hex[i * 2 + 1] = 87U + (key[i] & 0xf) + ((((key[i] & 0xf) - 10U) >> 8) & ~38U);  in key_to_hex()
82 	hex[i * 2] = '\0';  in key_to_hex()
93 	for (unsigned int i = 0; i < WG_KEY_LEN_HEX - 1; i += 2) {  in key_from_hex()  local
94 		c = (uint8_t)hex[i];  in key_from_hex()
103 		c = (uint8_t)hex[i + 1];  in key_from_hex()
110 		key[i / 2] = c_acc | c_val;  in key_from_hex()
120 	for (unsigned int i = 0; i < WG_KEY_LEN; ++i) {  in key_is_zero()  local
121 		acc |= key[i];  in key_is_zero()