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authorJay Satiro <raysatiro@yahoo.com>2017-05-08 23:23:28 +0200
committerDaniel Stenberg <daniel@haxx.se>2017-05-08 23:24:29 +0200
commit1cafede9f2b4a838dfc80423415e60704b3346f9 (patch)
treed1c4fce4f046b820f51836747a09f6f227911c5b /lib/rand.h
parent9e9509e46a9db909e4c0a2ce0ac1ef5c94fcb3a4 (diff)
rand: treat fake entropy the same regardless of endianness
When the random seed is purposely made predictable for testing purposes by using the CURL_ENTROPY environment variable, process that data in an endian agnostic way so the the initial random seed is the same regardless of endianness. - Change Curl_rand to write to a char array instead of int array. - Add Curl_rand_hex to write random hex characters to a buffer. Fixes #1315 Closes #1468 Co-authored-by: Daniel Stenberg Reported-by: Michael Kaufmann
Diffstat (limited to 'lib/rand.h')
-rw-r--r--lib/rand.h12
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/rand.h b/lib/rand.h
index 0f8986120..c6fae3553 100644
--- a/lib/rand.h
+++ b/lib/rand.h
@@ -7,7 +7,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@@ -23,7 +23,7 @@
***************************************************************************/
/*
- * Curl_rand() stores 'num' number of random unsigned integers in the buffer
+ * Curl_rand() stores 'num' number of random unsigned characters in the buffer
* 'rnd' points to.
*
* If libcurl is built without TLS support or with a TLS backend that lacks a
@@ -37,7 +37,11 @@
* easy handle!
*
*/
-CURLcode Curl_rand(struct Curl_easy *data, unsigned int *rnd,
- unsigned int num);
+CURLcode Curl_rand(struct Curl_easy *data, unsigned char *rnd, size_t num);
+
+/* Same as above but outputs only random lowercase hex characters.
+ Does NOT terminate.*/
+CURLcode Curl_rand_hex(struct Curl_easy *data, unsigned char *rnd,
+ size_t num);
#endif /* HEADER_CURL_RAND_H */