15 lines
479 B
Diff
15 lines
479 B
Diff
Index: cryptopp-CRYPTOPP_8_9_0/nbtheory.cpp
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===================================================================
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--- cryptopp-CRYPTOPP_8_9_0.orig/nbtheory.cpp
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+++ cryptopp-CRYPTOPP_8_9_0/nbtheory.cpp
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@@ -543,6 +543,9 @@ Integer CRT(const Integer &xp, const Int
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Integer ModularSquareRoot(const Integer &a, const Integer &p)
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{
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+ if (!IsPrime(p))
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+ throw InvalidArgument("ModularSquareRoot: p must be a prime");
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+
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if (p%4 == 3)
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return a_exp_b_mod_c(a, (p+1)/4, p);
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