From 684c824e9ac51ee2d6b748973757697a8ead2634 Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Sat, 20 Aug 2005 07:59:00 +0000 Subject: r9421: Move arcfour code into it's own file, in lib/crypto. Andrew Bartlett (This used to be commit ca6cf462708810637544d4b4bef0f404fb89a002) --- source4/libcli/util/smbdes.c | 67 -------------------------------------------- 1 file changed, 67 deletions(-) (limited to 'source4/libcli') diff --git a/source4/libcli/util/smbdes.c b/source4/libcli/util/smbdes.c index d214d4cfe4..d02cae602f 100644 --- a/source4/libcli/util/smbdes.c +++ b/source4/libcli/util/smbdes.c @@ -365,73 +365,6 @@ void des_crypt112_16(uint8_t out[16], uint8_t in[16], const uint8_t key[14], int des_crypt56(out + 8, in + 8, key+7, forw); } -/* initialise the arcfour sbox with key */ -void arcfour_init(struct arcfour_state *state, const DATA_BLOB *key) -{ - int ind; - uint8_t j = 0; - for (ind = 0; ind < sizeof(state->sbox); ind++) { - state->sbox[ind] = (uint8_t)ind; - } - - for (ind = 0; ind < sizeof(state->sbox); ind++) { - uint8_t tc; - - j += (state->sbox[ind] + key->data[ind%key->length]); - - tc = state->sbox[ind]; - state->sbox[ind] = state->sbox[j]; - state->sbox[j] = tc; - } - state->index_i = 0; - state->index_j = 0; -} - -/* crypt the data with arcfour */ -void arcfour_crypt_sbox(struct arcfour_state *state, uint8_t *data, int len) -{ - int ind; - - for (ind = 0; ind < len; ind++) { - uint8_t tc; - uint8_t t; - - state->index_i++; - state->index_j += state->sbox[state->index_i]; - - tc = state->sbox[state->index_i]; - state->sbox[state->index_i] = state->sbox[state->index_j]; - state->sbox[state->index_j] = tc; - - t = state->sbox[state->index_i] + state->sbox[state->index_j]; - data[ind] = data[ind] ^ state->sbox[t]; - } -} - -/* - arcfour encryption with a blob key -*/ -void arcfour_crypt_blob(uint8_t *data, int len, const DATA_BLOB *key) -{ - struct arcfour_state state; - arcfour_init(&state, key); - arcfour_crypt_sbox(&state, data, len); -} - -/* - a variant that assumes a 16 byte key. This should be removed - when the last user is gone -*/ -void arcfour_crypt(uint8_t *data, const uint8_t keystr[16], int len) -{ - DATA_BLOB key = data_blob(keystr, 16); - - arcfour_crypt_blob(data, len, &key); - - data_blob_free(&key); -} - - /* Decode a sam password hash into a password. The password hash is the same method used to store passwords in the NT registry. The DES key used is based on the RID of the user. */ -- cgit