| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
| 2 | From: "Jason A. Donenfeld" <Jason@zx2c4.com> |
| 3 | Date: Wed, 11 Dec 2019 10:26:39 +0100 |
| 4 | Subject: [PATCH] crypto: arm/curve25519 - add arch-specific key generation |
| 5 | function |
| 6 | |
| 7 | commit 84faa307249b341f6ad8de3e1869d77a65e26669 upstream. |
| 8 | |
| 9 | Somehow this was forgotten when Zinc was being split into oddly shaped |
| 10 | pieces, resulting in linker errors. The x86_64 glue has a specific key |
| 11 | generation implementation, but the Arm one does not. However, it can |
| 12 | still receive the NEON speedups by calling the ordinary DH function |
| 13 | using the base point. |
| 14 | |
| 15 | Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
| 16 | Acked-by: Ard Biesheuvel <ardb@kernel.org> |
| 17 | Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
| 18 | Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
| 19 | --- |
| 20 | arch/arm/crypto/curve25519-glue.c | 7 +++++++ |
| 21 | 1 file changed, 7 insertions(+) |
| 22 | |
| 23 | --- a/arch/arm/crypto/curve25519-glue.c |
| 24 | +++ b/arch/arm/crypto/curve25519-glue.c |
| 25 | @@ -38,6 +38,13 @@ void curve25519_arch(u8 out[CURVE25519_K |
| 26 | } |
| 27 | EXPORT_SYMBOL(curve25519_arch); |
| 28 | |
| 29 | +void curve25519_base_arch(u8 pub[CURVE25519_KEY_SIZE], |
| 30 | + const u8 secret[CURVE25519_KEY_SIZE]) |
| 31 | +{ |
| 32 | + return curve25519_arch(pub, secret, curve25519_base_point); |
| 33 | +} |
| 34 | +EXPORT_SYMBOL(curve25519_base_arch); |
| 35 | + |
| 36 | static int curve25519_set_secret(struct crypto_kpp *tfm, const void *buf, |
| 37 | unsigned int len) |
| 38 | { |