sneak
534b453a81
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seal.DeriveKeys derives the session hash and block keys, the encrypted URL key and the CSRF key from the signing key, with their salts declared beside it, and returns them as one seal.Keys. internal/providers calls it once at startup and provides the value to the fx graph. The session manager, the encrypted URL generator and the CSRF protection each take their own key. session.NewManager, encurl.NewGenerator, newCSRFProtect and handlers.New return no error, as nothing in them can fail now. Each key is derived as before, with seal.DeriveKey and the same salt. The signing key itself stays the HMAC key of signed URLs and the login password. README.md says under signing_key what it protects. Model: opus-5-5
43 lines
960 B
Go
43 lines
960 B
Go
package seal_test
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import (
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"bytes"
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"testing"
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"sneak.berlin/go/pixa/internal/seal"
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)
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// TestDeriveKeys_KeysDiffer verifies that the keys DeriveKeys derives differ
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// from each other and from the signing key.
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func TestDeriveKeys_KeysDiffer(t *testing.T) {
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t.Parallel()
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// 32 bytes, as long as a derived key, so that no key differs from it by
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// its length alone
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const signingKey = "0123456789abcdef0123456789abcdef"
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keys, err := seal.DeriveKeys(signingKey)
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if err != nil {
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t.Fatalf("DeriveKeys() error = %v", err)
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}
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named := []struct {
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name string
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key []byte
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}{
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{"the signing key", []byte(signingKey)},
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{"SessionHashKey", keys.SessionHashKey[:]},
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{"SessionBlockKey", keys.SessionBlockKey[:]},
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{"EncryptedURLKey", keys.EncryptedURLKey[:]},
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{"CSRFKey", keys.CSRFKey[:]},
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}
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for i, a := range named {
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for _, b := range named[i+1:] {
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if bytes.Equal(a.key, b.key) {
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t.Errorf("%s equals %s", a.name, b.name)
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}
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}
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}
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}
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