1 files changed, 58 insertions, 0 deletions
diff --git a/libblake_blake2s_init.c b/libblake_blake2s_init.c
new file mode 100644
index 0000000..d33ce5c
--- /dev/null
+++ b/libblake_blake2s_init.c
@@ -0,0 +1,58 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+void
+libblake_blake2s_init(struct libblake_blake2s_state *state, const struct libblake_blake2s_params *params, const unsigned char *key)
+{
+	state->h[0] = UINT_LEAST32_C(0x6A09E667);
+	state->h[1] = UINT_LEAST32_C(0xBB67AE85);
+	state->h[2] = UINT_LEAST32_C(0x3C6EF372);
+	state->h[3] = UINT_LEAST32_C(0xA54FF53A);
+	state->h[4] = UINT_LEAST32_C(0x510E527F);
+	state->h[5] = UINT_LEAST32_C(0x9B05688C);
+	state->h[6] = UINT_LEAST32_C(0x1F83D9AB);
+	state->h[7] = UINT_LEAST32_C(0x5BE0CD19);
+
+	state->t[0] = 0;
+	state->t[1] = 0;
+	state->f[0] = 0;
+	state->f[1] = 0;
+
+	state->h[0] ^= ((uint_least32_t)params->digest_len & 255) << 0;
+	state->h[0] ^= ((uint_least32_t)params->key_len & 255) << 8;
+	state->h[0] ^= ((uint_least32_t)params->fanout & 255) << 16;
+	state->h[0] ^= ((uint_least32_t)params->depth & 255) << 24;
+	state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 0) & 255) << 0;
+	state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 8) & 255) << 8;
+	state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 16) & 255) << 16;
+	state->h[1] ^= ((uint_least32_t)(params->leaf_len >> 24) & 255) << 24;
+	state->h[2] ^= ((uint_least32_t)(params->node_offset >> 0) & 255) << 0;
+	state->h[2] ^= ((uint_least32_t)(params->node_offset >> 8) & 255) << 8;
+	state->h[2] ^= ((uint_least32_t)(params->node_offset >> 16) & 255) << 16;
+	state->h[2] ^= ((uint_least32_t)(params->node_offset >> 24) & 255) << 24;
+	state->h[3] ^= ((uint_least32_t)(params->xof_len >> 0) & 255) << 0;
+	state->h[3] ^= ((uint_least32_t)(params->xof_len >> 8) & 255) << 8;
+	state->h[3] ^= ((uint_least32_t)params->node_depth & 255) << 16;
+	state->h[3] ^= ((uint_least32_t)params->inner_len & 255) << 24;
+	state->h[4] ^= ((uint_least32_t)params->salt[0] & 255) << 0;
+	state->h[4] ^= ((uint_least32_t)params->salt[1] & 255) << 8;
+	state->h[4] ^= ((uint_least32_t)params->salt[2] & 255) << 16;
+	state->h[4] ^= ((uint_least32_t)params->salt[3] & 255) << 24;
+	state->h[5] ^= ((uint_least32_t)params->salt[4] & 255) << 0;
+	state->h[5] ^= ((uint_least32_t)params->salt[5] & 255) << 8;
+	state->h[5] ^= ((uint_least32_t)params->salt[6] & 255) << 16;
+	state->h[5] ^= ((uint_least32_t)params->salt[7] & 255) << 24;
+	state->h[6] ^= ((uint_least32_t)params->pepper[0] & 255) << 0;
+	state->h[6] ^= ((uint_least32_t)params->pepper[1] & 255) << 8;
+	state->h[6] ^= ((uint_least32_t)params->pepper[2] & 255) << 16;
+	state->h[6] ^= ((uint_least32_t)params->pepper[3] & 255) << 24;
+	state->h[7] ^= ((uint_least32_t)params->pepper[4] & 255) << 0;
+	state->h[7] ^= ((uint_least32_t)params->pepper[5] & 255) << 8;
+	state->h[7] ^= ((uint_least32_t)params->pepper[6] & 255) << 16;
+	state->h[7] ^= ((uint_least32_t)params->pepper[7] & 255) << 24;
+
+	if (params->key_len) {
+		state->t[0] = 32;
+		libblake_internal_blake2s_compress(state, key);
+	}
+}