From eee7a6af613b7d4c7cb4b8333d1f5ecf30236301 Mon Sep 17 00:00:00 2001
From: siddharth ravikumar <s@ricketyspace.net>
Date: Sun, 14 Aug 2022 13:54:05 -0400
Subject: lib: RSAPub: add `Encrypt`
---
lib/rsa.go | 11 +++++++++++
1 file changed, 11 insertions(+)
(limited to 'lib')
diff --git a/lib/rsa.go b/lib/rsa.go
index 17cf6b0..00d575e 100644
--- a/lib/rsa.go
+++ b/lib/rsa.go
@@ -175,3 +175,14 @@ func RSAGenKey() (*RSAPair, error) {
return pair, nil
}
+
+func (r *RSAPub) Encrypt(msg []byte) []byte {
+ // Convert message to big int.
+ m := big.NewInt(0).SetBytes(msg)
+
+ // Encrypt.
+ c := big.NewInt(0).Exp(m, r.e, r.n)
+
+ return c.Bytes()
+}
+
--
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