Function Decrypt

internal/blobcrypto/blob_crypto.go:69–83

Decrypt decrypts the provided data using provided blobID to derive initialization vector.

(c Crypter, payload gather.Bytes, blobID blob.ID, output *gather.WriteBuffer)

// Decrypt decrypts the provided data using provided blobID to derive initialization vector.
func Decrypt(c Crypter, payload gather.Bytes, blobID blob.ID, output *gather.WriteBuffer) error {
	iv, err := getIndexBlobIV(blobID)
	if err != nil {
		return errors.Wrap(err, "unable to get index blob IV")
	}

	output.Reset()

	// Decrypt will verify the payload.
	if err := c.Encryptor().Decrypt(payload, iv, output); err != nil {
		return errors.Wrapf(err, "error decrypting BLOB %v", blobID)
	}

	return nil
}