| From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
| From: "Jason A. Donenfeld" <Jason@zx2c4.com> |
| Date: Wed, 11 Dec 2019 10:26:39 +0100 |
| Subject: [PATCH] crypto: arm/curve25519 - add arch-specific key generation |
| function |
| |
| commit 84faa307249b341f6ad8de3e1869d77a65e26669 upstream. |
| |
| Somehow this was forgotten when Zinc was being split into oddly shaped |
| pieces, resulting in linker errors. The x86_64 glue has a specific key |
| generation implementation, but the Arm one does not. However, it can |
| still receive the NEON speedups by calling the ordinary DH function |
| using the base point. |
| |
| Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
| Acked-by: Ard Biesheuvel <ardb@kernel.org> |
| Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
| Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
| --- |
| arch/arm/crypto/curve25519-glue.c | 7 +++++++ |
| 1 file changed, 7 insertions(+) |
| |
| --- a/arch/arm/crypto/curve25519-glue.c |
| +++ b/arch/arm/crypto/curve25519-glue.c |
| @@ -38,6 +38,13 @@ void curve25519_arch(u8 out[CURVE25519_K |
| } |
| EXPORT_SYMBOL(curve25519_arch); |
| |
| +void curve25519_base_arch(u8 pub[CURVE25519_KEY_SIZE], |
| + const u8 secret[CURVE25519_KEY_SIZE]) |
| +{ |
| + return curve25519_arch(pub, secret, curve25519_base_point); |
| +} |
| +EXPORT_SYMBOL(curve25519_base_arch); |
| + |
| static int curve25519_set_secret(struct crypto_kpp *tfm, const void *buf, |
| unsigned int len) |
| { |