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-rw-r--r--src/crypto/zinc/chacha20/chacha20-arm-glue.h8
-rw-r--r--src/crypto/zinc/chacha20/chacha20-arm.S4
-rw-r--r--src/crypto/zinc/chacha20/chacha20-mips-glue.h7
-rw-r--r--src/crypto/zinc/chacha20/chacha20-x86_64-glue.h8
-rw-r--r--src/crypto/zinc/chacha20/chacha20.c33
-rw-r--r--src/crypto/zinc/chacha20poly1305.c10
-rw-r--r--src/crypto/zinc/selftest/chacha20.h8
7 files changed, 41 insertions, 37 deletions
diff --git a/src/crypto/zinc/chacha20/chacha20-arm-glue.h b/src/crypto/zinc/chacha20/chacha20-arm-glue.h
index 1f1add0..86cce85 100644
--- a/src/crypto/zinc/chacha20/chacha20-arm-glue.h
+++ b/src/crypto/zinc/chacha20/chacha20-arm-glue.h
@@ -57,8 +57,10 @@ static inline bool chacha20_arch(struct chacha20_ctx *state, u8 *dst,
return true;
}
-static inline bool hchacha20_arch(u8 *derived_key, const u8 *nonce,
- const u8 *key, simd_context_t *simd_context)
+static inline bool hchacha20_arch(u32 derived_key[CHACHA20_KEY_WORDS],
+ const u8 nonce[HCHACHA20_NONCE_SIZE],
+ const u8 key[HCHACHA20_KEY_SIZE],
+ simd_context_t *simd_context)
{
#if defined(CONFIG_ARM)
u32 x[] = { CHACHA20_CONSTANT_EXPA,
@@ -78,7 +80,7 @@ static inline bool hchacha20_arch(u8 *derived_key, const u8 *nonce,
get_unaligned_le32(nonce + 8),
get_unaligned_le32(nonce + 12)
};
- hchacha20_arm(x, (u32 *)derived_key);
+ hchacha20_arm(x, derived_key);
return true;
#else
return false;
diff --git a/src/crypto/zinc/chacha20/chacha20-arm.S b/src/crypto/zinc/chacha20/chacha20-arm.S
index 7fbb631..5abedaf 100644
--- a/src/crypto/zinc/chacha20/chacha20-arm.S
+++ b/src/crypto/zinc/chacha20/chacha20-arm.S
@@ -457,9 +457,7 @@ ENTRY(hchacha20_arm)
ror X14, X14, #drot
ror X15, X15, #drot
- // Store (x0-x3,x12-x15) to 'out' after byte swapping
- _le32_bswap_4x X0, X1, X2, X3, X4, X5, X6
- _le32_bswap_4x X12, X13, X14, X15, X4, X5, X6
+ // Store (x0-x3,x12-x15) to 'out'
stm r4, {X0,X1,X2,X3,X12,X13,X14,X15}
pop {r4-r11,pc}
diff --git a/src/crypto/zinc/chacha20/chacha20-mips-glue.h b/src/crypto/zinc/chacha20/chacha20-mips-glue.h
index 929ca12..6e70dd6 100644
--- a/src/crypto/zinc/chacha20/chacha20-mips-glue.h
+++ b/src/crypto/zinc/chacha20/chacha20-mips-glue.h
@@ -17,8 +17,11 @@ static inline bool chacha20_arch(struct chacha20_ctx *state, u8 *dst,
return true;
}
-static inline bool hchacha20_arch(u8 *derived_key, const u8 *nonce,
- const u8 *key, simd_context_t *simd_context)
+
+static inline bool hchacha20_arch(u32 derived_key[CHACHA20_KEY_WORDS],
+ const u8 nonce[HCHACHA20_NONCE_SIZE],
+ const u8 key[HCHACHA20_KEY_SIZE],
+ simd_context_t *simd_context)
{
return false;
}
diff --git a/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h b/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h
index 77dacf6..1b7fc05 100644
--- a/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h
+++ b/src/crypto/zinc/chacha20/chacha20-x86_64-glue.h
@@ -9,7 +9,7 @@
#include <asm/intel-family.h>
#ifdef CONFIG_AS_SSSE3
-asmlinkage void hchacha20_ssse3(u8 *derived_key, const u8 *nonce,
+asmlinkage void hchacha20_ssse3(u32 *derived_key, const u8 *nonce,
const u8 *key);
asmlinkage void chacha20_ssse3(u8 *out, const u8 *in, const size_t len,
const u32 key[8], const u32 counter[4]);
@@ -92,8 +92,10 @@ success:
return true;
}
-static inline bool hchacha20_arch(u8 *derived_key, const u8 *nonce,
- const u8 *key, simd_context_t *simd_context)
+static inline bool hchacha20_arch(u32 derived_key[CHACHA20_KEY_WORDS],
+ const u8 nonce[HCHACHA20_NONCE_SIZE],
+ const u8 key[HCHACHA20_KEY_SIZE],
+ simd_context_t *simd_context)
{
#if defined(CONFIG_AS_SSSE3)
if (chacha20_use_ssse3 && simd_use(simd_context)) {
diff --git a/src/crypto/zinc/chacha20/chacha20.c b/src/crypto/zinc/chacha20/chacha20.c
index ca50d0e..dc9770b 100644
--- a/src/crypto/zinc/chacha20/chacha20.c
+++ b/src/crypto/zinc/chacha20/chacha20.c
@@ -30,8 +30,10 @@ static inline bool chacha20_arch(struct chacha20_ctx *state, u8 *out,
{
return false;
}
-static inline bool hchacha20_arch(u8 *derived_key, const u8 *nonce,
- const u8 *key, simd_context_t *simd_context)
+static inline bool hchacha20_arch(u32 derived_key[CHACHA20_KEY_WORDS],
+ const u8 nonce[HCHACHA20_NONCE_SIZE],
+ const u8 key[HCHACHA20_KEY_SIZE],
+ simd_context_t *simd_context)
{
return false;
}
@@ -118,43 +120,36 @@ void chacha20(struct chacha20_ctx *state, u8 *dst, const u8 *src, u32 len,
}
EXPORT_SYMBOL(chacha20);
-static void hchacha20_generic(u8 derived_key[CHACHA20_KEY_SIZE],
+static void hchacha20_generic(u32 derived_key[CHACHA20_KEY_WORDS],
const u8 nonce[HCHACHA20_NONCE_SIZE],
const u8 key[HCHACHA20_KEY_SIZE])
{
- __le32 *out = (__force __le32 *)derived_key;
u32 x[] = { CHACHA20_CONSTANT_EXPA,
CHACHA20_CONSTANT_ND_3,
CHACHA20_CONSTANT_2_BY,
CHACHA20_CONSTANT_TE_K,
- get_unaligned_le32(key + 0),
- get_unaligned_le32(key + 4),
- get_unaligned_le32(key + 8),
+ get_unaligned_le32(key + 0),
+ get_unaligned_le32(key + 4),
+ get_unaligned_le32(key + 8),
get_unaligned_le32(key + 12),
get_unaligned_le32(key + 16),
get_unaligned_le32(key + 20),
get_unaligned_le32(key + 24),
get_unaligned_le32(key + 28),
- get_unaligned_le32(nonce + 0),
- get_unaligned_le32(nonce + 4),
- get_unaligned_le32(nonce + 8),
+ get_unaligned_le32(nonce + 0),
+ get_unaligned_le32(nonce + 4),
+ get_unaligned_le32(nonce + 8),
get_unaligned_le32(nonce + 12)
};
TWENTY_ROUNDS(x);
- out[0] = cpu_to_le32(x[0]);
- out[1] = cpu_to_le32(x[1]);
- out[2] = cpu_to_le32(x[2]);
- out[3] = cpu_to_le32(x[3]);
- out[4] = cpu_to_le32(x[12]);
- out[5] = cpu_to_le32(x[13]);
- out[6] = cpu_to_le32(x[14]);
- out[7] = cpu_to_le32(x[15]);
+ memcpy(derived_key + 0, x + 0, sizeof(u32) * 4);
+ memcpy(derived_key + 4, x + 12, sizeof(u32) * 4);
}
/* Derived key should be 32-bit aligned */
-void hchacha20(u8 derived_key[CHACHA20_KEY_SIZE],
+void hchacha20(u32 derived_key[CHACHA20_KEY_WORDS],
const u8 nonce[HCHACHA20_NONCE_SIZE],
const u8 key[HCHACHA20_KEY_SIZE], simd_context_t *simd_context)
{
diff --git a/src/crypto/zinc/chacha20poly1305.c b/src/crypto/zinc/chacha20poly1305.c
index 2003cb1..f2d82a1 100644
--- a/src/crypto/zinc/chacha20poly1305.c
+++ b/src/crypto/zinc/chacha20poly1305.c
@@ -305,13 +305,14 @@ void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
const u8 key[CHACHA20POLY1305_KEYLEN])
{
simd_context_t simd_context;
- u8 derived_key[CHACHA20POLY1305_KEYLEN] __aligned(16);
+ u32 derived_key[CHACHA20_KEY_WORDS] __aligned(16);
simd_get(&simd_context);
hchacha20(derived_key, nonce, key, &simd_context);
+ cpu_to_le32_array(derived_key, ARRAY_SIZE(derived_key));
__chacha20poly1305_encrypt(dst, src, src_len, ad, ad_len,
get_unaligned_le64(nonce + 16),
- derived_key, &simd_context);
+ (u8 *)derived_key, &simd_context);
memzero_explicit(derived_key, CHACHA20POLY1305_KEYLEN);
simd_put(&simd_context);
}
@@ -324,13 +325,14 @@ bool xchacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
{
bool ret;
simd_context_t simd_context;
- u8 derived_key[CHACHA20POLY1305_KEYLEN] __aligned(16);
+ u32 derived_key[CHACHA20_KEY_WORDS] __aligned(16);
simd_get(&simd_context);
hchacha20(derived_key, nonce, key, &simd_context);
+ cpu_to_le32_array(derived_key, ARRAY_SIZE(derived_key));
ret = __chacha20poly1305_decrypt(dst, src, src_len, ad, ad_len,
get_unaligned_le64(nonce + 16),
- derived_key, &simd_context);
+ (u8 *)derived_key, &simd_context);
memzero_explicit(derived_key, CHACHA20POLY1305_KEYLEN);
simd_put(&simd_context);
return ret;
diff --git a/src/crypto/zinc/selftest/chacha20.h b/src/crypto/zinc/selftest/chacha20.h
index b20fd31..fefcb75 100644
--- a/src/crypto/zinc/selftest/chacha20.h
+++ b/src/crypto/zinc/selftest/chacha20.h
@@ -2518,6 +2518,7 @@ static bool __init chacha20_selftest(void)
{
enum { MAXIMUM_TEST_BUFFER_LEN = 1UL << 10 };
size_t i, j;
+ u32 derived_key[CHACHA20_KEY_WORDS];
u8 *offset_input = NULL, *computed_output = NULL;
u8 offset_key[CHACHA20_KEY_SIZE + 1]
__aligned(__alignof__(unsigned long));
@@ -2609,10 +2610,11 @@ next_test:
}
}
for (i = 0; i < ARRAY_SIZE(hchacha20_testvecs); ++i) {
- memset(computed_output, 0, MAXIMUM_TEST_BUFFER_LEN + 1);
- hchacha20(computed_output, hchacha20_testvecs[i].nonce,
+ memset(&derived_key, 0, sizeof(derived_key));
+ hchacha20(derived_key, hchacha20_testvecs[i].nonce,
hchacha20_testvecs[i].key, &simd_context);
- if (memcmp(computed_output, hchacha20_testvecs[i].output,
+ cpu_to_le32_array(derived_key, ARRAY_SIZE(derived_key));
+ if (memcmp(derived_key, hchacha20_testvecs[i].output,
CHACHA20_KEY_SIZE)) {
pr_info("hchacha20 self-test %zu: FAIL\n", i + 1);
success = false;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.