weichenandCursor
c7e3e99303
Goose 00036 is a renumbered copy of the vault tables. Degraded read stays off by default and only runs after authorization; tombstones and unpublished artifacts fail closed. Co-authored-by: Cursor <cursoragent@cursor.com>
54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
package artifactvault
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"io"
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)
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// ProjectKey derives a per-project envelope key. The master secret never enters manifests.
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func ProjectKey(master []byte, env, projectExternalKey string) (key []byte, ref string, err error) {
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if len(master) < 16 {
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return nil, "", fmt.Errorf("artifactvault: vault master key too short")
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}
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sum := sha256.Sum256(append(append(master, []byte(env)...), []byte(projectExternalKey)...))
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ref = "proj:" + env + ":" + projectExternalKey + ":" + hex.EncodeToString(sum[:8])
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return sum[:], ref, nil
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}
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func Encrypt(key, plaintext []byte) ([]byte, error) {
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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gcm, err := cipher.NewGCM(block)
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if err != nil {
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return nil, err
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}
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nonce := make([]byte, gcm.NonceSize())
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if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
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return nil, err
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}
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return gcm.Seal(nonce, nonce, plaintext, nil), nil
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}
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func Decrypt(key, envelope []byte) ([]byte, error) {
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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gcm, err := cipher.NewGCM(block)
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if err != nil {
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return nil, err
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}
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ns := gcm.NonceSize()
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if len(envelope) < ns {
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return nil, fmt.Errorf("artifactvault: short envelope")
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}
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return gcm.Open(nil, envelope[:ns], envelope[ns:], nil)
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}
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