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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#include <crypto/hmac.h>#include <crypto/sha2.h>#include <linux/export.h>#include <linux/kernel.h>#include <linux/module.h>#include <linux/overflow.h>#include <linux/string.h>#include <linux/unaligned.h>#include <linux/wordpart.h>#include "fips-sha.h"
static const struct sha512_block_state sha384_iv = { .h = { SHA384_H0, SHA384_H1, SHA384_H2, SHA384_H3, SHA384_H4, SHA384_H5, SHA384_H6, SHA384_H7, },};
static const struct sha512_block_state sha512_iv = { .h = { SHA512_H0, SHA512_H1, SHA512_H2, SHA512_H3, SHA512_H4, SHA512_H5, SHA512_H6, SHA512_H7, },};
static const u64 sha512_K[80] = { 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL, 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL, 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL, 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL, 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL, 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL, 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL, 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL, 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL, 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL, 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL, 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL, 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL, 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,};
#define Ch(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))#define Maj(x, y, z) (((x) & (y)) | ((z) & ((x) | (y))))#define e0(x) (ror64((x), 28) ^ ror64((x), 34) ^ ror64((x), 39))#define e1(x) (ror64((x), 14) ^ ror64((x), 18) ^ ror64((x), 41))#define s0(x) (ror64((x), 1) ^ ror64((x), 8) ^ ((x) >> 7))#define s1(x) (ror64((x), 19) ^ ror64((x), 61) ^ ((x) >> 6))
static void sha512_block_generic(struct sha512_block_state *state, const u8 *data){ u64 a = state->h[0]; u64 b = state->h[1]; u64 c = state->h[2]; u64 d = state->h[3]; u64 e = state->h[4]; u64 f = state->h[5]; u64 g = state->h[6]; u64 h = state->h[7]; u64 t1, t2; u64 W[16];
for (int j = 0; j < 16; j++) W[j] = get_unaligned_be64(data + j * sizeof(u64));
for (int i = 0; i < 80; i += 8) { if ((i & 15) == 0 && i != 0) { for (int j = 0; j < 16; j++) { W[j & 15] += s1(W[(j - 2) & 15]) + W[(j - 7) & 15] + s0(W[(j - 15) & 15]); } } t1 = h + e1(e) + Ch(e, f, g) + sha512_K[i] + W[(i & 15)]; t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2; t1 = g + e1(d) + Ch(d, e, f) + sha512_K[i+1] + W[(i & 15) + 1]; t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2; t1 = f + e1(c) + Ch(c, d, e) + sha512_K[i+2] + W[(i & 15) + 2]; t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2; t1 = e + e1(b) + Ch(b, c, d) + sha512_K[i+3] + W[(i & 15) + 3]; t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2; t1 = d + e1(a) + Ch(a, b, c) + sha512_K[i+4] + W[(i & 15) + 4]; t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2; t1 = c + e1(h) + Ch(h, a, b) + sha512_K[i+5] + W[(i & 15) + 5]; t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2; t1 = b + e1(g) + Ch(g, h, a) + sha512_K[i+6] + W[(i & 15) + 6]; t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2; t1 = a + e1(f) + Ch(f, g, h) + sha512_K[i+7] + W[(i & 15) + 7]; t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2; }
state->h[0] += a; state->h[1] += b; state->h[2] += c; state->h[3] += d; state->h[4] += e; state->h[5] += f; state->h[6] += g; state->h[7] += h;}
static void __maybe_unusedsha512_blocks_generic(struct sha512_block_state *state, const u8 *data, size_t nblocks){ do { sha512_block_generic(state, data); data += SHA512_BLOCK_SIZE; } while (--nblocks);}
#ifdef CONFIG_CRYPTO_LIB_SHA512_ARCH#include "sha512.h" /* $(SRCARCH)/sha512.h */#else#define sha512_blocks sha512_blocks_generic#endif
static void __sha512_init(struct __sha512_ctx *ctx, const struct sha512_block_state *iv, u64 initial_bytecount){ ctx->state = *iv; ctx->bytecount_lo = initial_bytecount; ctx->bytecount_hi = 0;}
void sha384_init(struct sha384_ctx *ctx){ __sha512_init(&ctx->ctx, &sha384_iv, 0);}EXPORT_SYMBOL_GPL(sha384_init);
void sha512_init(struct sha512_ctx *ctx){ __sha512_init(&ctx->ctx, &sha512_iv, 0);}EXPORT_SYMBOL_GPL(sha512_init);
void __sha512_update(struct __sha512_ctx *ctx, const u8 *data, size_t len){ size_t partial = ctx->bytecount_lo % SHA512_BLOCK_SIZE;
if (check_add_overflow(ctx->bytecount_lo, len, &ctx->bytecount_lo)) ctx->bytecount_hi++;
if (partial + len >= SHA512_BLOCK_SIZE) { size_t nblocks;
if (partial) { size_t l = SHA512_BLOCK_SIZE - partial;
memcpy(&ctx->buf[partial], data, l); data += l; len -= l;
sha512_blocks(&ctx->state, ctx->buf, 1); }
nblocks = len / SHA512_BLOCK_SIZE; len %= SHA512_BLOCK_SIZE;
if (nblocks) { sha512_blocks(&ctx->state, data, nblocks); data += nblocks * SHA512_BLOCK_SIZE; } partial = 0; } if (len) memcpy(&ctx->buf[partial], data, len);}EXPORT_SYMBOL_GPL(__sha512_update);
static void __sha512_final(struct __sha512_ctx *ctx, u8 *out, size_t digest_size){ u64 bitcount_hi = (ctx->bytecount_hi << 3) | (ctx->bytecount_lo >> 61); u64 bitcount_lo = ctx->bytecount_lo << 3; size_t partial = ctx->bytecount_lo % SHA512_BLOCK_SIZE;
ctx->buf[partial++] = 0x80; if (partial > SHA512_BLOCK_SIZE - 16) { memset(&ctx->buf[partial], 0, SHA512_BLOCK_SIZE - partial); sha512_blocks(&ctx->state, ctx->buf, 1); partial = 0; } memset(&ctx->buf[partial], 0, SHA512_BLOCK_SIZE - 16 - partial); *(__be64 *)&ctx->buf[SHA512_BLOCK_SIZE - 16] = cpu_to_be64(bitcount_hi); *(__be64 *)&ctx->buf[SHA512_BLOCK_SIZE - 8] = cpu_to_be64(bitcount_lo); sha512_blocks(&ctx->state, ctx->buf, 1);
for (size_t i = 0; i < digest_size; i += 8) put_unaligned_be64(ctx->state.h[i / 8], out + i);}
void sha384_final(struct sha384_ctx *ctx, u8 out[SHA384_DIGEST_SIZE]){ __sha512_final(&ctx->ctx, out, SHA384_DIGEST_SIZE); memzero_explicit(ctx, sizeof(*ctx));}EXPORT_SYMBOL_GPL(sha384_final);
void sha512_final(struct sha512_ctx *ctx, u8 out[SHA512_DIGEST_SIZE]){ __sha512_final(&ctx->ctx, out, SHA512_DIGEST_SIZE); memzero_explicit(ctx, sizeof(*ctx));}EXPORT_SYMBOL_GPL(sha512_final);
void sha384(const u8 *data, size_t len, u8 out[SHA384_DIGEST_SIZE]){ struct sha384_ctx ctx;
sha384_init(&ctx); sha384_update(&ctx, data, len); sha384_final(&ctx, out);}EXPORT_SYMBOL_GPL(sha384);
void sha512(const u8 *data, size_t len, u8 out[SHA512_DIGEST_SIZE]){ struct sha512_ctx ctx;
sha512_init(&ctx); sha512_update(&ctx, data, len); sha512_final(&ctx, out);}EXPORT_SYMBOL_GPL(sha512);
static void __hmac_sha512_preparekey(struct sha512_block_state *istate, struct sha512_block_state *ostate, const u8 *raw_key, size_t raw_key_len, const struct sha512_block_state *iv){ union { u8 b[SHA512_BLOCK_SIZE]; unsigned long w[SHA512_BLOCK_SIZE / sizeof(unsigned long)]; } derived_key = { 0 };
if (unlikely(raw_key_len > SHA512_BLOCK_SIZE)) { if (iv == &sha384_iv) sha384(raw_key, raw_key_len, derived_key.b); else sha512(raw_key, raw_key_len, derived_key.b); } else { memcpy(derived_key.b, raw_key, raw_key_len); }
for (size_t i = 0; i < ARRAY_SIZE(derived_key.w); i++) derived_key.w[i] ^= REPEAT_BYTE(HMAC_IPAD_VALUE); *istate = *iv; sha512_blocks(istate, derived_key.b, 1);
for (size_t i = 0; i < ARRAY_SIZE(derived_key.w); i++) derived_key.w[i] ^= REPEAT_BYTE(HMAC_OPAD_VALUE ^ HMAC_IPAD_VALUE); *ostate = *iv; sha512_blocks(ostate, derived_key.b, 1);
memzero_explicit(&derived_key, sizeof(derived_key));}
void hmac_sha384_preparekey(struct hmac_sha384_key *key, const u8 *raw_key, size_t raw_key_len){ __hmac_sha512_preparekey(&key->key.istate, &key->key.ostate, raw_key, raw_key_len, &sha384_iv);}EXPORT_SYMBOL_GPL(hmac_sha384_preparekey);
void hmac_sha512_preparekey(struct hmac_sha512_key *key, const u8 *raw_key, size_t raw_key_len){ __hmac_sha512_preparekey(&key->key.istate, &key->key.ostate, raw_key, raw_key_len, &sha512_iv);}EXPORT_SYMBOL_GPL(hmac_sha512_preparekey);
void __hmac_sha512_init(struct __hmac_sha512_ctx *ctx, const struct __hmac_sha512_key *key){ __sha512_init(&ctx->sha_ctx, &key->istate, SHA512_BLOCK_SIZE); ctx->ostate = key->ostate;}EXPORT_SYMBOL_GPL(__hmac_sha512_init);
void hmac_sha384_init_usingrawkey(struct hmac_sha384_ctx *ctx, const u8 *raw_key, size_t raw_key_len){ __hmac_sha512_preparekey(&ctx->ctx.sha_ctx.state, &ctx->ctx.ostate, raw_key, raw_key_len, &sha384_iv); ctx->ctx.sha_ctx.bytecount_lo = SHA512_BLOCK_SIZE; ctx->ctx.sha_ctx.bytecount_hi = 0;}EXPORT_SYMBOL_GPL(hmac_sha384_init_usingrawkey);
void hmac_sha512_init_usingrawkey(struct hmac_sha512_ctx *ctx, const u8 *raw_key, size_t raw_key_len){ __hmac_sha512_preparekey(&ctx->ctx.sha_ctx.state, &ctx->ctx.ostate, raw_key, raw_key_len, &sha512_iv); ctx->ctx.sha_ctx.bytecount_lo = SHA512_BLOCK_SIZE; ctx->ctx.sha_ctx.bytecount_hi = 0;}EXPORT_SYMBOL_GPL(hmac_sha512_init_usingrawkey);
static void __hmac_sha512_final(struct __hmac_sha512_ctx *ctx, u8 *out, size_t digest_size){ /* Generate the padded input for the outer hash in ctx->sha_ctx.buf. */ __sha512_final(&ctx->sha_ctx, ctx->sha_ctx.buf, digest_size); memset(&ctx->sha_ctx.buf[digest_size], 0, SHA512_BLOCK_SIZE - digest_size); ctx->sha_ctx.buf[digest_size] = 0x80; *(__be32 *)&ctx->sha_ctx.buf[SHA512_BLOCK_SIZE - 4] = cpu_to_be32(8 * (SHA512_BLOCK_SIZE + digest_size));
/* Compute the outer hash, which gives the HMAC value. */ sha512_blocks(&ctx->ostate, ctx->sha_ctx.buf, 1); for (size_t i = 0; i < digest_size; i += 8) put_unaligned_be64(ctx->ostate.h[i / 8], out + i);
memzero_explicit(ctx, sizeof(*ctx));}
void hmac_sha384_final(struct hmac_sha384_ctx *ctx, u8 out[SHA384_DIGEST_SIZE]){ __hmac_sha512_final(&ctx->ctx, out, SHA384_DIGEST_SIZE);}EXPORT_SYMBOL_GPL(hmac_sha384_final);
void hmac_sha512_final(struct hmac_sha512_ctx *ctx, u8 out[SHA512_DIGEST_SIZE]){ __hmac_sha512_final(&ctx->ctx, out, SHA512_DIGEST_SIZE);}EXPORT_SYMBOL_GPL(hmac_sha512_final);
void hmac_sha384(const struct hmac_sha384_key *key, const u8 *data, size_t data_len, u8 out[SHA384_DIGEST_SIZE]){ struct hmac_sha384_ctx ctx;
hmac_sha384_init(&ctx, key); hmac_sha384_update(&ctx, data, data_len); hmac_sha384_final(&ctx, out);}EXPORT_SYMBOL_GPL(hmac_sha384);
void hmac_sha512(const struct hmac_sha512_key *key, const u8 *data, size_t data_len, u8 out[SHA512_DIGEST_SIZE]){ struct hmac_sha512_ctx ctx;
hmac_sha512_init(&ctx, key); hmac_sha512_update(&ctx, data, data_len); hmac_sha512_final(&ctx, out);}EXPORT_SYMBOL_GPL(hmac_sha512);
void hmac_sha384_usingrawkey(const u8 *raw_key, size_t raw_key_len, const u8 *data, size_t data_len, u8 out[SHA384_DIGEST_SIZE]){ struct hmac_sha384_ctx ctx;
hmac_sha384_init_usingrawkey(&ctx, raw_key, raw_key_len); hmac_sha384_update(&ctx, data, data_len); hmac_sha384_final(&ctx, out);}EXPORT_SYMBOL_GPL(hmac_sha384_usingrawkey);
void hmac_sha512_usingrawkey(const u8 *raw_key, size_t raw_key_len, const u8 *data, size_t data_len, u8 out[SHA512_DIGEST_SIZE]){ struct hmac_sha512_ctx ctx;
hmac_sha512_init_usingrawkey(&ctx, raw_key, raw_key_len); hmac_sha512_update(&ctx, data, data_len); hmac_sha512_final(&ctx, out);}EXPORT_SYMBOL_GPL(hmac_sha512_usingrawkey);
#if defined(sha512_mod_init_arch) || defined(CONFIG_CRYPTO_FIPS)static int __init sha512_mod_init(void){#ifdef sha512_mod_init_arch sha512_mod_init_arch();#endif if (fips_enabled) { /* * FIPS cryptographic algorithm self-test. As per the FIPS * Implementation Guidance, testing HMAC-SHA512 satisfies the * test requirement for SHA-384, SHA-512, and HMAC-SHA384 too. */ u8 mac[SHA512_DIGEST_SIZE];
hmac_sha512_usingrawkey(fips_test_key, sizeof(fips_test_key), fips_test_data, sizeof(fips_test_data), mac); if (memcmp(fips_test_hmac_sha512_value, mac, sizeof(mac)) != 0) panic("sha512: FIPS self-test failed\n"); } return 0;}subsys_initcall(sha512_mod_init);
static void __exit sha512_mod_exit(void){}module_exit(sha512_mod_exit);#endif
MODULE_DESCRIPTION("SHA-384, SHA-512, HMAC-SHA384, and HMAC-SHA512 library functions");MODULE_LICENSE("GPL");