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-rw-r--r--drivers/net/wireguard/noise.c45
-rw-r--r--include/crypto/blake2s.h3
-rw-r--r--lib/crypto/blake2s-selftest.c31
-rw-r--r--lib/crypto/blake2s.c37
4 files changed, 39 insertions, 77 deletions
diff --git a/drivers/net/wireguard/noise.c b/drivers/net/wireguard/noise.c
index c0cfd9b36c0b..720952b92e78 100644
--- a/drivers/net/wireguard/noise.c
+++ b/drivers/net/wireguard/noise.c
@@ -302,6 +302,41 @@ void wg_noise_set_static_identity_private_key(
static_identity->static_public, private_key);
}
+static void hmac(u8 *out, const u8 *in, const u8 *key, const size_t inlen, const size_t keylen)
+{
+ struct blake2s_state state;
+ u8 x_key[BLAKE2S_BLOCK_SIZE] __aligned(__alignof__(u32)) = { 0 };
+ u8 i_hash[BLAKE2S_HASH_SIZE] __aligned(__alignof__(u32));
+ int i;
+
+ if (keylen > BLAKE2S_BLOCK_SIZE) {
+ blake2s_init(&state, BLAKE2S_HASH_SIZE);
+ blake2s_update(&state, key, keylen);
+ blake2s_final(&state, x_key);
+ } else
+ memcpy(x_key, key, keylen);
+
+ for (i = 0; i < BLAKE2S_BLOCK_SIZE; ++i)
+ x_key[i] ^= 0x36;
+
+ blake2s_init(&state, BLAKE2S_HASH_SIZE);
+ blake2s_update(&state, x_key, BLAKE2S_BLOCK_SIZE);
+ blake2s_update(&state, in, inlen);
+ blake2s_final(&state, i_hash);
+
+ for (i = 0; i < BLAKE2S_BLOCK_SIZE; ++i)
+ x_key[i] ^= 0x5c ^ 0x36;
+
+ blake2s_init(&state, BLAKE2S_HASH_SIZE);
+ blake2s_update(&state, x_key, BLAKE2S_BLOCK_SIZE);
+ blake2s_update(&state, i_hash, BLAKE2S_HASH_SIZE);
+ blake2s_final(&state, i_hash);
+
+ memcpy(out, i_hash, BLAKE2S_HASH_SIZE);
+ memzero_explicit(x_key, BLAKE2S_BLOCK_SIZE);
+ memzero_explicit(i_hash, BLAKE2S_HASH_SIZE);
+}
+
/* This is Hugo Krawczyk's HKDF:
* - https://eprint.iacr.org/2010/264.pdf
* - https://tools.ietf.org/html/rfc5869
@@ -322,14 +357,14 @@ static void kdf(u8 *first_dst, u8 *second_dst, u8 *third_dst, const u8 *data,
((third_len || third_dst) && (!second_len || !second_dst))));
/* Extract entropy from data into secret */
- blake2s256_hmac(secret, data, chaining_key, data_len, NOISE_HASH_LEN);
+ hmac(secret, data, chaining_key, data_len, NOISE_HASH_LEN);
if (!first_dst || !first_len)
goto out;
/* Expand first key: key = secret, data = 0x1 */
output[0] = 1;
- blake2s256_hmac(output, output, secret, 1, BLAKE2S_HASH_SIZE);
+ hmac(output, output, secret, 1, BLAKE2S_HASH_SIZE);
memcpy(first_dst, output, first_len);
if (!second_dst || !second_len)
@@ -337,8 +372,7 @@ static void kdf(u8 *first_dst, u8 *second_dst, u8 *third_dst, const u8 *data,
/* Expand second key: key = secret, data = first-key || 0x2 */
output[BLAKE2S_HASH_SIZE] = 2;
- blake2s256_hmac(output, output, secret, BLAKE2S_HASH_SIZE + 1,
- BLAKE2S_HASH_SIZE);
+ hmac(output, output, secret, BLAKE2S_HASH_SIZE + 1, BLAKE2S_HASH_SIZE);
memcpy(second_dst, output, second_len);
if (!third_dst || !third_len)
@@ -346,8 +380,7 @@ static void kdf(u8 *first_dst, u8 *second_dst, u8 *third_dst, const u8 *data,
/* Expand third key: key = secret, data = second-key || 0x3 */
output[BLAKE2S_HASH_SIZE] = 3;
- blake2s256_hmac(output, output, secret, BLAKE2S_HASH_SIZE + 1,
- BLAKE2S_HASH_SIZE);
+ hmac(output, output, secret, BLAKE2S_HASH_SIZE + 1, BLAKE2S_HASH_SIZE);
memcpy(third_dst, output, third_len);
out:
diff --git a/include/crypto/blake2s.h b/include/crypto/blake2s.h
index df3c6c2f9553..f9ffd39194eb 100644
--- a/include/crypto/blake2s.h
+++ b/include/crypto/blake2s.h
@@ -101,7 +101,4 @@ static inline void blake2s(u8 *out, const u8 *in, const u8 *key,
blake2s_final(&state, out);
}
-void blake2s256_hmac(u8 *out, const u8 *in, const u8 *key, const size_t inlen,
- const size_t keylen);
-
#endif /* _CRYPTO_BLAKE2S_H */
diff --git a/lib/crypto/blake2s-selftest.c b/lib/crypto/blake2s-selftest.c
index 5d9ea53be973..409e4b728770 100644
--- a/lib/crypto/blake2s-selftest.c
+++ b/lib/crypto/blake2s-selftest.c
@@ -15,7 +15,6 @@
* #include <stdio.h>
*
* #include <openssl/evp.h>
- * #include <openssl/hmac.h>
*
* #define BLAKE2S_TESTVEC_COUNT 256
*
@@ -58,16 +57,6 @@
* }
* printf("};\n\n");
*
- * printf("static const u8 blake2s_hmac_testvecs[][BLAKE2S_HASH_SIZE] __initconst = {\n");
- *
- * HMAC(EVP_blake2s256(), key, sizeof(key), buf, sizeof(buf), hash, NULL);
- * print_vec(hash, BLAKE2S_OUTBYTES);
- *
- * HMAC(EVP_blake2s256(), buf, sizeof(buf), key, sizeof(key), hash, NULL);
- * print_vec(hash, BLAKE2S_OUTBYTES);
- *
- * printf("};\n");
- *
* return 0;
*}
*/
@@ -554,15 +543,6 @@ static const u8 blake2s_testvecs[][BLAKE2S_HASH_SIZE] __initconst = {
0xd6, 0x98, 0x6b, 0x07, 0x10, 0x65, 0x52, 0x65, },
};
-static const u8 blake2s_hmac_testvecs[][BLAKE2S_HASH_SIZE] __initconst = {
- { 0xce, 0xe1, 0x57, 0x69, 0x82, 0xdc, 0xbf, 0x43, 0xad, 0x56, 0x4c, 0x70,
- 0xed, 0x68, 0x16, 0x96, 0xcf, 0xa4, 0x73, 0xe8, 0xe8, 0xfc, 0x32, 0x79,
- 0x08, 0x0a, 0x75, 0x82, 0xda, 0x3f, 0x05, 0x11, },
- { 0x77, 0x2f, 0x0c, 0x71, 0x41, 0xf4, 0x4b, 0x2b, 0xb3, 0xc6, 0xb6, 0xf9,
- 0x60, 0xde, 0xe4, 0x52, 0x38, 0x66, 0xe8, 0xbf, 0x9b, 0x96, 0xc4, 0x9f,
- 0x60, 0xd9, 0x24, 0x37, 0x99, 0xd6, 0xec, 0x31, },
-};
-
bool __init blake2s_selftest(void)
{
u8 key[BLAKE2S_KEY_SIZE];
@@ -607,16 +587,5 @@ bool __init blake2s_selftest(void)
}
}
- if (success) {
- blake2s256_hmac(hash, buf, key, sizeof(buf), sizeof(key));
- success &= !memcmp(hash, blake2s_hmac_testvecs[0], BLAKE2S_HASH_SIZE);
-
- blake2s256_hmac(hash, key, buf, sizeof(key), sizeof(buf));
- success &= !memcmp(hash, blake2s_hmac_testvecs[1], BLAKE2S_HASH_SIZE);
-
- if (!success)
- pr_err("blake2s256_hmac self-test: FAIL\n");
- }
-
return success;
}
diff --git a/lib/crypto/blake2s.c b/lib/crypto/blake2s.c
index 93f2ae051370..9364f79937b8 100644
--- a/lib/crypto/blake2s.c
+++ b/lib/crypto/blake2s.c
@@ -30,43 +30,6 @@ void blake2s_final(struct blake2s_state *state, u8 *out)
}
EXPORT_SYMBOL(blake2s_final);
-void blake2s256_hmac(u8 *out, const u8 *in, const u8 *key, const size_t inlen,
- const size_t keylen)
-{
- struct blake2s_state state;
- u8 x_key[BLAKE2S_BLOCK_SIZE] __aligned(__alignof__(u32)) = { 0 };
- u8 i_hash[BLAKE2S_HASH_SIZE] __aligned(__alignof__(u32));
- int i;
-
- if (keylen > BLAKE2S_BLOCK_SIZE) {
- blake2s_init(&state, BLAKE2S_HASH_SIZE);
- blake2s_update(&state, key, keylen);
- blake2s_final(&state, x_key);
- } else
- memcpy(x_key, key, keylen);
-
- for (i = 0; i < BLAKE2S_BLOCK_SIZE; ++i)
- x_key[i] ^= 0x36;
-
- blake2s_init(&state, BLAKE2S_HASH_SIZE);
- blake2s_update(&state, x_key, BLAKE2S_BLOCK_SIZE);
- blake2s_update(&state, in, inlen);
- blake2s_final(&state, i_hash);
-
- for (i = 0; i < BLAKE2S_BLOCK_SIZE; ++i)
- x_key[i] ^= 0x5c ^ 0x36;
-
- blake2s_init(&state, BLAKE2S_HASH_SIZE);
- blake2s_update(&state, x_key, BLAKE2S_BLOCK_SIZE);
- blake2s_update(&state, i_hash, BLAKE2S_HASH_SIZE);
- blake2s_final(&state, i_hash);
-
- memcpy(out, i_hash, BLAKE2S_HASH_SIZE);
- memzero_explicit(x_key, BLAKE2S_BLOCK_SIZE);
- memzero_explicit(i_hash, BLAKE2S_HASH_SIZE);
-}
-EXPORT_SYMBOL(blake2s256_hmac);
-
static int __init blake2s_mod_init(void)
{
if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) &&
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-10 03:58:20 +0000