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< __FBSDID("$FreeBSD: head/sys/geom/eli/g_eli_crypto.c 275732 2014-12-12 19:56:36Z jmg $");
---
> __FBSDID("$FreeBSD: head/sys/geom/eli/g_eli_crypto.c 293306 2016-01-07 05:47:34Z allanjude $");
224,295d223
<
< void
< g_eli_crypto_hmac_init(struct hmac_ctx *ctx, const uint8_t *hkey,
< size_t hkeylen)
< {
< u_char k_ipad[128], key[128];
< SHA512_CTX lctx;
< u_int i;
<
< bzero(key, sizeof(key));
< if (hkeylen == 0)
< ; /* do nothing */
< else if (hkeylen <= 128)
< bcopy(hkey, key, hkeylen);
< else {
< /* If key is longer than 128 bytes reset it to key = SHA512(key). */
< SHA512_Init(&lctx);
< SHA512_Update(&lctx, hkey, hkeylen);
< SHA512_Final(key, &lctx);
< }
<
< /* XOR key with ipad and opad values. */
< for (i = 0; i < sizeof(key); i++) {
< k_ipad[i] = key[i] ^ 0x36;
< ctx->k_opad[i] = key[i] ^ 0x5c;
< }
< bzero(key, sizeof(key));
< /* Perform inner SHA512. */
< SHA512_Init(&ctx->shactx);
< SHA512_Update(&ctx->shactx, k_ipad, sizeof(k_ipad));
< bzero(k_ipad, sizeof(k_ipad));
< }
<
< void
< g_eli_crypto_hmac_update(struct hmac_ctx *ctx, const uint8_t *data,
< size_t datasize)
< {
<
< SHA512_Update(&ctx->shactx, data, datasize);
< }
<
< void
< g_eli_crypto_hmac_final(struct hmac_ctx *ctx, uint8_t *md, size_t mdsize)
< {
< u_char digest[SHA512_MDLEN];
< SHA512_CTX lctx;
<
< SHA512_Final(digest, &ctx->shactx);
< /* Perform outer SHA512. */
< SHA512_Init(&lctx);
< SHA512_Update(&lctx, ctx->k_opad, sizeof(ctx->k_opad));
< bzero(ctx, sizeof(*ctx));
< SHA512_Update(&lctx, digest, sizeof(digest));
< SHA512_Final(digest, &lctx);
< bzero(&lctx, sizeof(lctx));
< /* mdsize == 0 means "Give me the whole hash!" */
< if (mdsize == 0)
< mdsize = SHA512_MDLEN;
< bcopy(digest, md, mdsize);
< bzero(digest, sizeof(digest));
< }
<
< void
< g_eli_crypto_hmac(const uint8_t *hkey, size_t hkeysize, const uint8_t *data,
< size_t datasize, uint8_t *md, size_t mdsize)
< {
< struct hmac_ctx ctx;
<
< g_eli_crypto_hmac_init(&ctx, hkey, hkeysize);
< g_eli_crypto_hmac_update(&ctx, data, datasize);
< g_eli_crypto_hmac_final(&ctx, md, mdsize);
< }