all: implement method to decrypt file using private key

The Decrypt method decrypt the file using private key from file
"{{.BaseDir}}/.awwan.key".
The encrypted file must have extension ".vault", otherwise it will return
an error.
The decrypted file output will be written in the same directory without
the ".vault" extension in filePlain.

6 files changed, 41 insertions, 0 deletions

diff --git a/testdata/decrypt-with-passphrase/.awwan.env.vault b/testdata/decrypt-with-passphrase/.awwan.env.vault
new file mode 100644
index 0000000..41960cd
--- /dev/null
+++ b/testdata/decrypt-with-passphrase/.awwan.env.vault
diff --git a/testdata/decrypt-with-passphrase/.awwan.key b/testdata/decrypt-with-passphrase/.awwan.key
new file mode 120000
index 0000000..aa99eff
--- /dev/null
+++ b/testdata/decrypt-with-passphrase/.awwan.key
@@ -0,0 +1 @@
+../encrypt-with-passphrase/.awwan.key
\ No newline at end of file
diff --git a/testdata/decrypt-with-passphrase/.ssh/empty b/testdata/decrypt-with-passphrase/.ssh/empty
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/testdata/decrypt-with-passphrase/.ssh/empty
diff --git a/testdata/decrypt-wrong-privatekey/.awwan.env.vault b/testdata/decrypt-wrong-privatekey/.awwan.env.vault
new file mode 120000
index 0000000..1d98464
--- /dev/null
+++ b/testdata/decrypt-wrong-privatekey/.awwan.env.vault
@@ -0,0 +1 @@
+../encrypt-with-passphrase/.awwan.env.vault
\ No newline at end of file
diff --git a/testdata/decrypt-wrong-privatekey/.awwan.key b/testdata/decrypt-wrong-privatekey/.awwan.key
new file mode 100644
index 0000000..bf2f333
--- /dev/null
+++ b/testdata/decrypt-wrong-privatekey/.awwan.key
@@ -0,0 +1,39 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABBbFHvM6/
+cjOf51NkIRoaU/AAAAGAAAAAEAAAGXAAAAB3NzaC1yc2EAAAADAQABAAABgQDEsgoiSGVS
+/a2V3od9QRvAao8KCjKH0bdBG67sd1jB6gKdUny04W+XVaNwbA5S3WVRfM5k+2l4mteJNm
+lFtCMANfHIfC/ApMRpST7y661B2S2RvW1FnN1Qv43P5GYzyIokkHrvJvaTr7pRUArCb+qo
+a4Z/I39nwM7cif58vxPHlMLR0dryd7WF+Z6lUotXy7xQEk1HYoq8rVLZMfrgIFx88Wa243
+20ikgLRKuLd3vRmlH+47aKnC/V9krRja6KtJWo/NT1Y/N1GSBsDx4wYCr0dIGGH7crb8Qp
+oIfg8WztrEtEDA/AMml8SIY0LmfHtRrZjn/CZdn1g/OuAyepevBt2QQxDUBrAGp8oYFhHQ
+2Fbu2z3Jnsid6/m7MrTlW90/2+Gh54VEtFaYyPHrxHXuG5bKa8kPNzrCg7LddboVn4BdqY
+Qchznv/PIeKi+b7Su1MAluL01YsJClXmrMwqxYjRG+4xLv0VijRN5eANxMVwNWWr16VZnj
+lsBCRFqyrLvv0AAAWAb8Zh+f43psszO0zkY0Cgd7hPwR6hFgcg0MLbLKTotfjOaZrk+5a+
+43brewmGMsTXAiqUT/PQhXDQnxZO53yrcfc4mCpHZdgfX+ylj7n8LnzqOob4sZ9DqzIVx2
+nf0fjLQ1m2MeI686kGyXO4woYRbucwf7IgBbmzckPOeCIbwnddFoHlX0aPmgSJuaOCXZE5
+ob407woavvSSQSroVypkruXLofnDEsKN+NhEYNRLm/XspRR+IG6XW/Gw0dXRZTMb2N2z7H
+01xCjDD7FcGS0qgNC8HuR+JJPw365zNGI4FMCXMhdpNzZr2fGVg7jnteBw2pis702P+BNF
+TQtJhIRaaZ/N8/+96rd9OQnCMeo4yly6dTafnMM4GKViidjqQLKas5pqYLXzPvo/QoV1Yf
+Yf2VGK/+TATtPoC/OQTahh+OfjDFozIgdg4S/+0iycVfEFDEmQFr7YVXnt/AI+ue0YuO0k
+1v6Hol22AUSWsbms3zEZswQ+OhtZz3gaE3oIVfW/ezGSQGDPNuxg0DHyjB49Cm+DpE3/DR
+u12O09JqwkpyYfjsBewl1qFNsnoIv3+TfwCfX8ytCGx+2OW/mYftMvUlg/PwPUKcdlXBfR
+X3kjwGu6dS6MtzkJCuobJ1koY42sByDSy/0gHYNYWNBVlUyTpb4aqV4mB0IlMXOanF3TaE
+7W2DkL6490FoXixh+oOreURvb6LiX6m/faAeHoCZOinDjaV8Zn3x31eysOByJ8rcQkHwGM
+PwwnwS5UV4ZjVCYYLPjhbzKAbX1GCL72atyNLXbKtirByY2+m/webYW/IIB1EnOGNnhS0c
+/a0ipsQPNE4iB5kxEpLWVr7BN2ho8fmGhT/lPvi+8DZ6vi+2A7vA6cEpk5DNuAE2xG8zei
+NcAcPFbypEGZhdHEu68/DbK1+6T016u0Jw7OQvFedIIeYkNfWXuZWutqgmZBFhlxEachUt
+S0IWqa52f5HUqKgfXV/1GBKtJqMVxNLK2EqXCSANk9dSG19ZaVjN2qOzT/bjrxaIbmzMui
+QU968wSZ7tuPXJUhSP214hfWAqhmhQKn2QcfDSeBQ6XK9BaBKZe4vDXBEaiOsl3enSRFf+
+BEAy/SCSrwCuyb6uTuB7QP+FhWUivSs2bInCh/sInYhrmWKLvehTZ63ROO81Jn6NHanqwN
+mQTffN6ymoktBnkoNTJr5x34+A14Ln9m5nPKqcN1ZU0jiu9f99Q7rwVZdQsrcZSqP9OyEh
+y9E593nQluDqvIxHPmfv9uXlet/lLcQSt9JZSCuBnpAENL0EGLLEYjLzKJUMHo8Rsy+MdL
+TRzuOWlc4Dqr1Tw86bvRtYdWZ3qm4mPl5kwi527Z4DhNCAyL3wwIRN5RpJ/refrnRBNTta
+iN6XzCkUhh2D63OKv5yrXU0dnoJXA3hWL9JuPqUDXOvZNRo86b7TwV5R0T6bqiHQ50/Vj8
+g4ea0ZXuw2tyZOF/OILT1r3fH7P9PSEb2j4vPTFJ4DuItvbykNCrfF3l/wla1GctIw7UZ5
+d0pNaVIWxqB7q+i51DaKgOIRDbXgwwpsrGgsygIZEY19NLE2TFau1tXCwggXok7cEyCv3T
+RTf1fraVk1aa8lOiMd+3RZMh3vqzAzWQvjVdgIFtJx0X63eNb1sYpBAkQvaIhpIWpKHkEz
+PDApfB1oxQn7dDveS0C44szhWByFLwLsMoQeRH0I6Z6Rxs+xuroLaWUxOuFV9V55m/KSUQ
+MjHeKp/LMwgOf28YL5+qsG2ur0W6x+7gidUYueu3dmEzJUKvcawoThGhC8Dm8MEJJphYex
+yEZQE0q6wehgC6JH4Sn9hMFdXL2NoOD/sCqMy561PiwhoRI6c6B/nEQ2052hk9YEOsiLQu
+pVmomw==
+-----END OPENSSH PRIVATE KEY-----
diff --git a/testdata/decrypt-wrong-privatekey/.ssh/empty b/testdata/decrypt-wrong-privatekey/.ssh/empty
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/testdata/decrypt-wrong-privatekey/.ssh/empty