X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/6c38d4c96fa96c871c739718081caa5e56ce968a..a273fcfda25a24ca50d669f518947401536381e7:/armsrc/crypto1.c

diff --git a/armsrc/crypto1.c b/armsrc/crypto1.c
index 98d38b2b..68cb9b4e 100644
--- a/armsrc/crypto1.c
+++ b/armsrc/crypto1.c
@@ -141,3 +141,13 @@ uint32_t prng_successor(uint32_t x, uint32_t n)
 
 	return SWAPENDIAN(x);
 }
+
+uint32_t prng_successor_one(uint32_t x)
+{
+	SWAPENDIAN(x);
+
+	x = x >> 1 | (x >> 16 ^ x >> 18 ^ x >> 19 ^ x >> 21) << 31;
+
+	return SWAPENDIAN(x);
+}
+