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authorsiddharth ravikumar <s@ricketyspace.net>2022-08-14 13:04:06 -0400
committersiddharth ravikumar <s@ricketyspace.net>2022-08-14 13:04:06 -0400
commiteb436e38563783b901c271d5779d35ecad7c45f9 (patch)
tree5111eac5aadfcf6a206179314845b2246508a9a2 /lib
parente12ccae7a96c01dce5e86aa17c27e20644c75a15 (diff)
lib: update TestInvMod
Add new tests.
Diffstat (limited to 'lib')
-rw-r--r--lib/rsa_test.go26
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/rsa_test.go b/lib/rsa_test.go
index 4f65468..6e04ee7 100644
--- a/lib/rsa_test.go
+++ b/lib/rsa_test.go
@@ -58,6 +58,7 @@ func TestInvMod(t *testing.T) {
i, err := invmod(a, b)
if err != nil {
t.Errorf("invmod(%v,%v) failed: %v", a, b, err)
+ return
}
if i.Cmp(e) != 0 {
t.Errorf("gcd(%v,%v) != %v", a, b, e)
@@ -69,6 +70,31 @@ func TestInvMod(t *testing.T) {
i, err = invmod(a, b)
if err != nil {
t.Errorf("invmod(%v,%v) failed: %v", a, b, err)
+ return
+ }
+ if i.Cmp(e) != 0 {
+ t.Errorf("gcd(%v,%v) != %v", a, b, e)
+ }
+
+ a = big.NewInt(11)
+ b = big.NewInt(26)
+ e = big.NewInt(19) // Expected inverse.
+ i, err = invmod(a, b)
+ if err != nil {
+ t.Errorf("invmod(%v,%v) failed: %v", a, b, err)
+ return
+ }
+ if i.Cmp(e) != 0 {
+ t.Errorf("gcd(%v,%v) != %v", a, b, e)
+ }
+
+ a = big.NewInt(3)
+ b = big.NewInt(7)
+ e = big.NewInt(5) // Expected inverse.
+ i, err = invmod(a, b)
+ if err != nil {
+ t.Errorf("invmod(%v,%v) failed: %v", a, b, err)
+ return
}
if i.Cmp(e) != 0 {
t.Errorf("gcd(%v,%v) != %v", a, b, e)