commit b770adbd035c33b12db1c442286eab1461a6dbe6 Author: Nick Mathewson nickm@torproject.org Date: Thu Dec 13 17:15:03 2018 -0500
Use crypto_xof() in hs_ntor.c. --- src/core/crypto/hs_ntor.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/src/core/crypto/hs_ntor.c b/src/core/crypto/hs_ntor.c index c34073690..add8a2b8f 100644 --- a/src/core/crypto/hs_ntor.c +++ b/src/core/crypto/hs_ntor.c @@ -176,7 +176,6 @@ get_introduce1_key_material(const uint8_t *secret_input, uint8_t keystream[CIPHER256_KEY_LEN + DIGEST256_LEN]; uint8_t info_blob[INFO_BLOB_LEN]; uint8_t kdf_input[KDF_INPUT_LEN]; - crypto_xof_t *xof; uint8_t *ptr;
/* Let's build info */ @@ -193,10 +192,8 @@ get_introduce1_key_material(const uint8_t *secret_input, tor_assert(ptr == kdf_input + sizeof(kdf_input));
/* Now we need to run kdf_input over SHAKE-256 */ - xof = crypto_xof_new(); - crypto_xof_add_bytes(xof, kdf_input, sizeof(kdf_input)); - crypto_xof_squeeze_bytes(xof, keystream, sizeof(keystream)) ; - crypto_xof_free(xof); + crypto_xof(keystream, sizeof(keystream), + kdf_input, sizeof(kdf_input));
{ /* Get the keys */ memcpy(&hs_ntor_intro_cell_keys_out->enc_key, keystream,CIPHER256_KEY_LEN); @@ -594,7 +591,6 @@ hs_ntor_circuit_key_expansion(const uint8_t *ntor_key_seed, size_t seed_len, { uint8_t *ptr; uint8_t kdf_input[NTOR_KEY_EXPANSION_KDF_INPUT_LEN]; - crypto_xof_t *xof;
/* Sanity checks on lengths to make sure we are good */ if (BUG(seed_len != DIGEST256_LEN)) { @@ -611,10 +607,8 @@ hs_ntor_circuit_key_expansion(const uint8_t *ntor_key_seed, size_t seed_len, tor_assert(ptr == kdf_input + sizeof(kdf_input));
/* Generate the keys */ - xof = crypto_xof_new(); - crypto_xof_add_bytes(xof, kdf_input, sizeof(kdf_input)); - crypto_xof_squeeze_bytes(xof, keys_out, HS_NTOR_KEY_EXPANSION_KDF_OUT_LEN); - crypto_xof_free(xof); + crypto_xof(keys_out, HS_NTOR_KEY_EXPANSION_KDF_OUT_LEN, + kdf_input, sizeof(kdf_input));
return 0; }