global: normalize -> clamp
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
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3ac679e7a1
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777fe674c4
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@ -1688,7 +1688,7 @@ static void invert(fe o, const fe i)
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memzero_explicit(c, sizeof(c));
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memzero_explicit(c, sizeof(c));
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}
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}
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static void normalize_key(uint8_t *z)
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static void clamp_key(uint8_t *z)
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{
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{
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z[31] = (z[31] & 127) | 64;
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z[31] = (z[31] & 127) | 64;
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z[0] &= 248;
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z[0] &= 248;
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@ -1701,7 +1701,7 @@ void wg_generate_public_key(wg_key public_key, const wg_key private_key)
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fe a = { 1 }, b = { 9 }, c = { 0 }, d = { 1 }, e, f;
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fe a = { 1 }, b = { 9 }, c = { 0 }, d = { 1 }, e, f;
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memcpy(z, private_key, sizeof(z));
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memcpy(z, private_key, sizeof(z));
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normalize_key(z);
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clamp_key(z);
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for (i = 254; i >= 0; --i) {
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for (i = 254; i >= 0; --i) {
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r = (z[i >> 3] >> (i & 7)) & 1;
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r = (z[i >> 3] >> (i & 7)) & 1;
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@ -1745,7 +1745,7 @@ void wg_generate_public_key(wg_key public_key, const wg_key private_key)
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void wg_generate_private_key(wg_key private_key)
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void wg_generate_private_key(wg_key private_key)
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{
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{
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wg_generate_preshared_key(private_key);
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wg_generate_preshared_key(private_key);
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normalize_key(private_key);
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clamp_key(private_key);
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}
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}
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void wg_generate_preshared_key(wg_key preshared_key)
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void wg_generate_preshared_key(wg_key preshared_key)
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@ -91,7 +91,7 @@
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o[a] = c[a];
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o[a] = c[a];
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}
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}
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function normalizeKey(z) {
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function clamp(z) {
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z[31] = (z[31] & 127) | 64;
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z[31] = (z[31] & 127) | 64;
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z[0] &= 248;
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z[0] &= 248;
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}
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}
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@ -108,7 +108,7 @@
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_9 = gf([9]);
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_9 = gf([9]);
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for (var i = 0; i < 32; ++i)
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for (var i = 0; i < 32; ++i)
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z[i] = privateKey[i];
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z[i] = privateKey[i];
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normalizeKey(z);
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clamp(z);
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for (var i = 254; i >= 0; --i) {
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for (var i = 254; i >= 0; --i) {
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r = (z[i >>> 3] >>> (i & 7)) & 1;
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r = (z[i >>> 3] >>> (i & 7)) & 1;
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cswap(a, b, r);
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cswap(a, b, r);
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@ -148,7 +148,7 @@
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function generatePrivateKey() {
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function generatePrivateKey() {
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var privateKey = generatePresharedKey();
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var privateKey = generatePresharedKey();
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normalizeKey(privateKey);
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clamp(privateKey);
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return privateKey;
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return privateKey;
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}
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}
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@ -68,7 +68,7 @@ static inline void put_unaligned_le64(u64 s, u8 *d)
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#ifndef __force
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#ifndef __force
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#define __force
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#define __force
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#endif
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#endif
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#define normalize_secret(a) curve25519_normalize_secret(a)
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#define clamp_secret(a) curve25519_clamp_secret(a)
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static noinline void memzero_explicit(void *s, size_t count)
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static noinline void memzero_explicit(void *s, size_t count)
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{
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{
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@ -15,7 +15,7 @@ enum curve25519_lengths {
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void curve25519(uint8_t mypublic[static CURVE25519_KEY_SIZE], const uint8_t secret[static CURVE25519_KEY_SIZE], const uint8_t basepoint[static CURVE25519_KEY_SIZE]);
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void curve25519(uint8_t mypublic[static CURVE25519_KEY_SIZE], const uint8_t secret[static CURVE25519_KEY_SIZE], const uint8_t basepoint[static CURVE25519_KEY_SIZE]);
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void curve25519_generate_public(uint8_t pub[static CURVE25519_KEY_SIZE], const uint8_t secret[static CURVE25519_KEY_SIZE]);
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void curve25519_generate_public(uint8_t pub[static CURVE25519_KEY_SIZE], const uint8_t secret[static CURVE25519_KEY_SIZE]);
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static inline void curve25519_normalize_secret(uint8_t secret[static CURVE25519_KEY_SIZE])
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static inline void curve25519_clamp_secret(uint8_t secret[static CURVE25519_KEY_SIZE])
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{
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{
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secret[0] &= 248;
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secret[0] &= 248;
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secret[31] &= 127;
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secret[31] &= 127;
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@ -71,7 +71,7 @@ int genkey_main(int argc, char *argv[])
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return 1;
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return 1;
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}
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}
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if (!strcmp(argv[0], "genkey"))
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if (!strcmp(argv[0], "genkey"))
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curve25519_normalize_secret(key);
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curve25519_clamp_secret(key);
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key_to_base64(base64, key);
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key_to_base64(base64, key);
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puts(base64);
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puts(base64);
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