plaintext, data []byte) []byte { if len(nonce) != gcmStandardNonceSize { panic("crypto/cipher: incorrect nonce length given to GCM") } counter := byteorder.BEUint64(nonce[len(nonce)-8:]) if !g.ready { // The first invocation sets the fixed name encoding and start counter. g.ready = true g.start = counter g.fixedName = byteorder.BEUint32(nonce[:4]) } if g.fixedName != byteorder.BEUint32(nonce[:4]) { panic("crypto/cipher: incorrect module name given to GCMWithCounterNonce") } counter -= g.start // Ensure...

nce []byte) error { if len(nonce) != gcmStandardNonceSize { return errors.New("crypto/cipher: incorrect nonce length given to SetNoncePrefixAndMas") } if g.ready { return errors.New("crypto/cipher: SetNoncePrefixAndMas called twice or after first Seal") } g.prefix = byteorder.BEUint32(nonce[:4]) g.mask = byteorder.BEUint64(nonce[4:]) g.ready = true return nil } func (g *GCMWithXORCounterNon) NonceSize() int { return gcmStandardNonceSize } func (g *GCMWithXORCounterNon) Overhead() int { return gcmTagSize...