all: replace rsa.Decrypt/EncryptOAEP with libcrypto.Decrypt/EncryptOaep

The rsa.EncryptAOEP function has a maximum message size that they can
encrypt (public key size - 2*hash.Size - 2).

To fix this limitation we replace them with the one in libcrypto
that extend the functions to allow encrypting and decrypting a larger
message.

4 files changed, 6 insertions, 6 deletions

diff --git a/awwan.go b/awwan.go
index ce8c9ac..ced84cd 100644
--- a/awwan.go
+++ b/awwan.go
@@ -145,7 +145,7 @@ func (aww *Awwan) Decrypt(fileVault string) (filePlain string, err error) {
 		plaintext []byte
 	)
 
-	plaintext, err = rsa.DecryptOAEP(hash, rand.Reader, aww.privateKey, ciphertext, label)
+	plaintext, err = libcrypto.DecryptOaep(hash, rand.Reader, aww.privateKey, ciphertext, label)
 	if err != nil {
 		return ``, fmt.Errorf(`%s: %w`, logp, err)
 	}
@@ -190,7 +190,7 @@ func (aww *Awwan) Encrypt(file string) (err error) {
 		ciphertext []byte
 	)
 
-	ciphertext, err = rsa.EncryptOAEP(hash, rand.Reader, &aww.privateKey.PublicKey, src, label)
+	ciphertext, err = libcrypto.EncryptOaep(hash, rand.Reader, &aww.privateKey.PublicKey, src, label)
 	if err != nil {
 		return fmt.Errorf(`%s: %w`, logp, err)
 	}
diff --git a/awwan_test.go b/awwan_test.go
index f3949ab..1669158 100644
--- a/awwan_test.go
+++ b/awwan_test.go
@@ -34,7 +34,7 @@ func TestAwwanDecrypt(t *testing.T) {
 		baseDir:    filepath.Join(`testdata`, `decrypt-wrong-privatekey`),
 		fileVault:  `.awwan.env.vault`,
 		passphrase: "news3cret\r",
-		expError:   `Decrypt: crypto/rsa: decryption error`,
+		expError:   `Decrypt: DecryptOaep: crypto/rsa: decryption error`,
 	}}
 
 	var (
diff --git a/go.mod b/go.mod
index df6edef..308cadd 100644
--- a/go.mod
+++ b/go.mod
@@ -8,7 +8,7 @@ go 1.20
 require (
 	git.sr.ht/~shulhan/ciigo v0.10.0
 	github.com/evanw/esbuild v0.17.10
-	github.com/shuLhan/share v0.49.2-0.20230919175205-3b7ac793264a
+	github.com/shuLhan/share v0.49.2-0.20230920155045-e35459d8d13e
 )
 
 require (
diff --git a/go.sum b/go.sum
index 3d859ee..a86e3a2 100644
--- a/go.sum
+++ b/go.sum
@@ -4,8 +4,8 @@ git.sr.ht/~shulhan/ciigo v0.10.0 h1:s1SJ3/NzBcbOLmEZ4z1Cx9Vf7ZdDIvm45b7KMCZKzEY=
 git.sr.ht/~shulhan/ciigo v0.10.0/go.mod h1:cG6av+ywJZZp96F43kmLB2QWjm2hYiahbsbeTX/vlgk=
 github.com/evanw/esbuild v0.17.10 h1:RMwM8ehohA6RSgWVirjnsZ+u9ttNt0gWfRLYCxUbAoc=
 github.com/evanw/esbuild v0.17.10/go.mod h1:iINY06rn799hi48UqEnaQvVfZWe6W9bET78LbvN8VWk=
-github.com/shuLhan/share v0.49.2-0.20230919175205-3b7ac793264a h1:7ohg2TOplcnbhfGiIdkPb1fn3D3Qph0ZDRMOkxwM580=
-github.com/shuLhan/share v0.49.2-0.20230919175205-3b7ac793264a/go.mod h1:i5/MNWUy/B+b76J96VTNG8HLE/xZ8mVy+i0oR51y6Jc=
+github.com/shuLhan/share v0.49.2-0.20230920155045-e35459d8d13e h1:rsR3V02nrcSqx6IyZ0YEPekDcBWh3a2D4NJHJF5edXg=
+github.com/shuLhan/share v0.49.2-0.20230920155045-e35459d8d13e/go.mod h1:i5/MNWUy/B+b76J96VTNG8HLE/xZ8mVy+i0oR51y6Jc=
 github.com/yuin/goldmark v1.5.4 h1:2uY/xC0roWy8IBEGLgB1ywIoEJFGmRrX21YQcvGZzjU=
 github.com/yuin/goldmark v1.5.4/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 github.com/yuin/goldmark-meta v1.1.0 h1:pWw+JLHGZe8Rk0EGsMVssiNb/AaPMHfSRszZeUeiOUc=