A private key is encoded as a QR code, XOR-encrypted with a keystream from a seed-image-initialized LFSR, and concealed in a cover image; the authors recover it in one example.
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Private key and password protection by steganographic image encryption
A private key is encoded as a QR code, XOR-encrypted with a keystream from a seed-image-initialized LFSR, and concealed in a cover image; the authors recover it in one example.