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crypto: arm/curve25519 - add arch-specific key generation function

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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>
This commit is contained in:
Jason A. Donenfeld 2019-12-11 10:26:39 +01:00 committed by Herbert Xu
parent 8a6b8f4d7a
commit 84faa30724
1 changed files with 7 additions and 0 deletions
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7
arch/arm/crypto/curve25519-glue.c
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@ -38,6 +38,13 @@ void curve25519_arch(u8 out[CURVE25519_KEY_SIZE],
} }
EXPORT_SYMBOL(curve25519_arch); 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, static int curve25519_set_secret(struct crypto_kpp *tfm, const void *buf,
unsigned int len) unsigned int len)
{ {