tTimeCompare(c[:], c1), Kout, Kprime) return Kout } // pkeDecrypt1024 decrypts a ciphertext. // // It implements K-PKE.Decrypt according to FIPS 203, Algorithm 15, // although s is retained from kemKeyGen1024. func pkeDecrypt1024(dx *decryptionKey1024, c *[CiphertextSize1024]byte) []byte { u := make([]ringElement, k1024) for i := range u { b := (*[encodingSize11]byte)(c[encodingSize11*i : encodingSize11*(i+1)]) u[i] = ringDecodeAndDecompr(b) } b := (*[encodingSize5]byte)(c[encodingSize11*k1024:])...