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author | Julien Dessaux | 2024-09-30 00:58:49 +0200 |
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committer | Julien Dessaux | 2024-09-30 01:00:59 +0200 |
commit | 4ff490806c826cf2da4c2291ed924f0a49383fce (patch) | |
tree | 6870f4883cd03a824095b969500f08fb59f04038 /pkg/scrypto/pkcs5.go | |
parent | chore(tfstated): rename tfstate to tfstated (diff) | |
download | tfstated-4ff490806c826cf2da4c2291ed924f0a49383fce.tar.gz tfstated-4ff490806c826cf2da4c2291ed924f0a49383fce.tar.bz2 tfstated-4ff490806c826cf2da4c2291ed924f0a49383fce.zip |
feat(tfstated): implement GET and POST methods, states are encrypted in a sqlite3 database
Diffstat (limited to '')
-rw-r--r-- | pkg/scrypto/pkcs5.go | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/pkg/scrypto/pkcs5.go b/pkg/scrypto/pkcs5.go new file mode 100644 index 0000000..b41c564 --- /dev/null +++ b/pkg/scrypto/pkcs5.go @@ -0,0 +1,31 @@ +package scrypto + +import ( + "bytes" + "fmt" +) + +func PadPKCS5(data []byte, blockSize int) []byte { + paddingSize := blockSize - len(data)%blockSize + padding := bytes.Repeat([]byte{byte(paddingSize)}, paddingSize) + + return append(data, padding...) +} + +func UnpadPKCS5(data []byte, blockSize int) ([]byte, error) { + dataSize := len(data) + if dataSize%blockSize != 0 { + return nil, fmt.Errorf("truncated data") + } + + if len(data) == 0 { + return data, nil + } else { + paddingSize := int(data[dataSize-1]) + if paddingSize > dataSize || paddingSize > blockSize { + return nil, fmt.Errorf("invalid padding size %d", paddingSize) + } + + return data[:dataSize-paddingSize], nil + } +} |