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Differential D31284 Diff 93539 sys/crypto/sha2/sha256c.c

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sys/crypto/sha2/sha256c.c

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#ifdef _KERNEL #ifdef _KERNEL
#include <sys/systm.h> #include <sys/systm.h>
#else #else
#include <string.h> #include <string.h>
#endif #endif
#include "sha224.h" #include "sha224.h"
#include "sha256.h" #include "sha256.h"
#include "sha256c_impl.h"
#if defined(ARM64_SHA2)
#include <sys/auxv.h>
#include <machine/ifunc.h>
#endif
#if BYTE_ORDER == BIG_ENDIAN #if BYTE_ORDER == BIG_ENDIAN
/* Copy a vector of big-endian uint32_t into a vector of bytes */ /* Copy a vector of big-endian uint32_t into a vector of bytes */
#define be32enc_vect(dst, src, len) \ #define be32enc_vect(dst, src, len) \
memcpy((void *)dst, (const void *)src, (size_t)len) memcpy((void *)dst, (const void *)src, (size_t)len)
/* Copy a vector of bytes into a vector of big-endian uint32_t */ /* Copy a vector of bytes into a vector of big-endian uint32_t */
#define be32dec_vect(dst, src, len) \ #define be32dec_vect(dst, src, len) \
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#define MSCH(W, ii, i) \ #define MSCH(W, ii, i) \
W[i + ii + 16] = s1(W[i + ii + 14]) + W[i + ii + 9] + s0(W[i + ii + 1]) + W[i + ii] W[i + ii + 16] = s1(W[i + ii + 14]) + W[i + ii + 9] + s0(W[i + ii + 1]) + W[i + ii]
/* /*
* SHA256 block compression function. The 256-bit state is transformed via * SHA256 block compression function. The 256-bit state is transformed via
* the 512-bit input block to produce a new state. * the 512-bit input block to produce a new state.
*/ */
static void static void
SHA256_Transform(uint32_t * state, const unsigned char block[64]) SHA256_Transform_c(uint32_t * state, const unsigned char block[64])
{ {
uint32_t W[64]; uint32_t W[64];
uint32_t S[8]; uint32_t S[8];
int i; int i;
/* 1. Prepare the first part of the message schedule W. */ /* 1. Prepare the first part of the message schedule W. */
be32dec_vect(W, block, 64); be32dec_vect(W, block, 64);
Show All 38 Lines for (i = 0; i < 64; i += 16) {
MSCH(W, 14, i); MSCH(W, 14, i);
MSCH(W, 15, i); MSCH(W, 15, i);
} }
/* 4. Mix local working variables into global state */ /* 4. Mix local working variables into global state */
for (i = 0; i < 8; i++) for (i = 0; i < 8; i++)
state[i] += S[i]; state[i] += S[i];
} }
#if defined(ARM64_SHA2)
static void
SHA256_Transform_arm64(uint32_t * state, const unsigned char block[64])
cemUnsubmitted
Not Done
Inline Actions

I might throw this in a header file.

cem: I might throw this in a header file.
andrewAuthorUnsubmitted
Done
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The only reason I didn't is because I didn't want to add it to sha256.h as it shouldn't be used outside of this code and I didn't want to create a new header just for 2 lines.

andrew: The only reason I didn't is because I didn't want to add it to `sha256.h` as it shouldn't be…
{
SHA256_Transform_arm64_impl(state, block, K);
}
cemUnsubmitted
Done
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Static?

cem: Static?
DEFINE_UIFUNC(static, void, SHA256_Transform,
(uint32_t * state, const unsigned char block[64]))
{
u_long hwcap;
if (elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap)) == 0) {
if ((hwcap & HWCAP_SHA2) != 0)
return (SHA256_Transform_arm64);
}
return (SHA256_Transform_c);
}
#else
static void
SHA256_Transform(uint32_t * state, const unsigned char block[64])
{
SHA256_Transform_c(state, block);
}
#endif
static unsigned char PAD[64] = { static unsigned char PAD[64] = {
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
}; };
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