diff options
Diffstat (limited to '')
| -rw-r--r-- | src/tools/encoding.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/tools/encoding.c b/src/tools/encoding.c index c407b57..da5ccef 100644 --- a/src/tools/encoding.c +++ b/src/tools/encoding.c @@ -9,6 +9,7 @@ static inline void encode_base64(char dest[4], const uint8_t src[3]) { const uint8_t input[] = { (src[0] >> 2) & 63, ((src[0] << 4) | (src[1] >> 4)) & 63, ((src[1] << 2) | (src[2] >> 6)) & 63, src[2] & 63 }; + for (unsigned int i = 0; i < 4; ++i) dest[i] = input[i] + 'A' + (((25 - input[i]) >> 8) & 6) @@ -21,6 +22,7 @@ static inline void encode_base64(char dest[4], const uint8_t src[3]) void key_to_base64(char base64[static WG_KEY_LEN_BASE64], const uint8_t key[static WG_KEY_LEN]) { unsigned int i; + for (i = 0; i < WG_KEY_LEN / 3; ++i) encode_base64(&base64[i * 4], &key[i * 3]); encode_base64(&base64[i * 4], (const uint8_t[]){ key[i * 3 + 0], key[i * 3 + 1], 0 }); @@ -31,6 +33,7 @@ void key_to_base64(char base64[static WG_KEY_LEN_BASE64], const uint8_t key[stat static inline int decode_base64(const char src[4]) { int val = 0; + for (unsigned int i = 0; i < 4; ++i) val |= (-1 + ((((('A' - 1) - src[i]) & (src[i] - ('Z' + 1))) >> 8) & (src[i] - 64)) @@ -46,6 +49,7 @@ bool key_from_base64(uint8_t key[static WG_KEY_LEN], const char *base64) { unsigned int i; int val; + if (strlen(base64) != WG_KEY_LEN_BASE64 - 1 || base64[WG_KEY_LEN_BASE64 - 2] != '=') return false; @@ -68,6 +72,7 @@ bool key_from_base64(uint8_t key[static WG_KEY_LEN], const char *base64) void key_to_hex(char hex[static WG_KEY_LEN_HEX], const uint8_t key[static WG_KEY_LEN]) { unsigned int i; + for (i = 0; i < WG_KEY_LEN; ++i) { hex[i * 2] = 87U + (key[i] >> 4) + ((((key[i] >> 4) - 10U) >> 8) & ~38U); hex[i * 2 + 1] = 87U + (key[i] & 0xf) + ((((key[i] & 0xf) - 10U) >> 8) & ~38U); @@ -103,6 +108,7 @@ bool key_from_hex(uint8_t key[static WG_KEY_LEN], const char *hex) bool key_is_zero(const uint8_t key[static WG_KEY_LEN]) { volatile uint8_t acc = 0; + for (unsigned int i = 0; i < WG_KEY_LEN; ++i) { acc |= key[i]; __asm__ ("" : "=r" (acc) : "0" (acc)); |