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authorChristian Grothoff <christian@grothoff.org>2011-11-23 19:23:03 +0000
committerChristian Grothoff <christian@grothoff.org>2011-11-23 19:23:03 +0000
commita39e9010af50091561d45bf04bfedd10fb4cc70a (patch)
treebd7c2e5c736fa4e49e900e4b714e746a3cc0de2f /src/util/crypto_random.c
parent383241240e8b1409c5e36dd00074af8402aa6c10 (diff)
downloadgnunet-a39e9010af50091561d45bf04bfedd10fb4cc70a.tar.gz
gnunet-a39e9010af50091561d45bf04bfedd10fb4cc70a.zip
LRN: fixing 1956 by using a better random generator on W32
Diffstat (limited to 'src/util/crypto_random.c')
-rw-r--r--src/util/crypto_random.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/util/crypto_random.c b/src/util/crypto_random.c
index 719acf07c..9fc14863c 100644
--- a/src/util/crypto_random.c
+++ b/src/util/crypto_random.c
@@ -34,6 +34,35 @@
34 34
35#define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", syscall) 35#define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", syscall)
36 36
37/* TODO: ndurner, move this to plibc? */
38/* The code is derived from glibc, obviously */
39#if MINGW
40#ifdef RANDOM
41# undef RANDOM
42#endif
43#ifdef SRANDOM
44# undef SRANDOM
45#endif
46#define RANDOM() glibc_weak_rand32()
47#define SRANDOM(s) glibc_weak_srand32(s)
48static int32_t glibc_weak_rand32_state = 1;
49
50void
51glibc_weak_srand32 (int32_t s)
52{
53 glibc_weak_rand32_state = s;
54}
55
56int32_t
57glibc_weak_rand32 ()
58{
59 int32_t val = glibc_weak_rand32_state;
60 val = ((glibc_weak_rand32_state * 1103515245) + 12345) & 0x7fffffff;
61 glibc_weak_rand32_state = val;
62 return val;
63}
64#endif
65
37/** 66/**
38 * Create a cryptographically weak pseudo-random number in the interval of 0 to 1. 67 * Create a cryptographically weak pseudo-random number in the interval of 0 to 1.
39 * 68 *