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-rw-r--r--rsa/prime.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/rsa/prime.py b/rsa/prime.py
index 29fa498..ab3eb97 100644
--- a/rsa/prime.py
+++ b/rsa/prime.py
@@ -96,7 +96,7 @@ def miller_rabin_primality_testing(n, k):
# Test k witnesses.
for _ in range(k):
# Generate random integer a, where 2 <= a <= (n - 2)
- a = rsa.randnum.randint(n - 4) + 2
+ a = rsa.randnum.randint(n - 3) + 1
x = pow(a, d, n)
if x == 1 or x == n - 1: