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23 lines
1.0 KiB
Go
23 lines
1.0 KiB
Go
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package helper
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import "github.com/ProtonMail/gopenpgp/v2/crypto"
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// EncryptPGPMessageToAdditionalKey decrypts the session key of the input PGPSplitMessage with a private key in keyRing
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// and encrypts it towards the additionalKeys by adding the additional key packets to the input PGPSplitMessage.
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// If successful, new key packets are added to message.
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// * messageToModify : The encrypted pgp message that should be modified
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// * keyRing : The private keys to decrypt the session key in the messageToModify.
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// * additionalKey : The public keys the message should be additionally encrypted to.
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func EncryptPGPMessageToAdditionalKey(messageToModify *crypto.PGPSplitMessage, keyRing *crypto.KeyRing, additionalKey *crypto.KeyRing) error {
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sessionKey, err := keyRing.DecryptSessionKey(messageToModify.KeyPacket)
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if err != nil {
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return err
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}
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additionalKeyPacket, err := additionalKey.EncryptSessionKey(sessionKey)
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if err != nil {
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return err
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}
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messageToModify.KeyPacket = append(messageToModify.KeyPacket, additionalKeyPacket...)
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return nil
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}
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