View CryptoFractions_struct.cpp
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struct CryptoFractions { | |
Ciphertext<DCRTPoly> encryptedNumerators; | |
Ciphertext<DCRTPoly> encryptedDenominators; | |
vector<int64_t> numerators; | |
vector<int64_t> denominators; | |
}; |
View encrypt_audio.cpp
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CryptoFractions encrypt_audio(vector<float> signal, int startIndex, int sampleSize, const char *keysFilePath, const long precision) { | |
vector<int64_t> intSignal; | |
CryptoFractions encryptedSignal; | |
int numerator; | |
int endIndex = startIndex + sampleSize; | |
for (int i = startIndex; i < endIndex; i += 1) { | |
numerator = int(signal[i] * precision); | |
encryptedSignal.numerators.push_back(numerator); |
View real_discrete_fourier_transform.cpp
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/*N is signal size (number of samples), sampleRate in kHz (num samples per ms), frameLength in ms, shiftLength in ms*/ | |
vector<vector<Ciphertext<DCRTPoly>>> real_discrete_fourier_transform(int N, int sampleRate, int frameLength, int shiftLength, CryptoContext<DCRTPoly> cc, LPPublicKey<DCRTPoly> publicKey, CryptoFractions encSignal, LPPrivateKey<DCRTPoly> sk) { | |
int boundN, boundM; | |
if (N % 2 == 0) { | |
boundM = N / 2 - 1; | |
boundN = N / 2; | |
} | |
else { | |
boundM = (N - 1) / 2; |
View real_discrete_fourier_transform.cpp
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/*N is signal size (number of samples), sampleRate in kHz (num samples per ms), frameLength in ms, shiftLength in ms*/ | |
vector<vector<Ciphertext<DCRTPoly>>> real_discrete_fourier_transform(int N, int sampleRate, int frameLength, int shiftLength, CryptoContext<DCRTPoly> cc, LPPublicKey<DCRTPoly> publicKey, CryptoFractions encSignal, LPPrivateKey<DCRTPoly> sk) { | |
int boundN, boundM; | |
if (N % 2 == 0) { | |
boundM = N / 2 - 1; | |
boundN = N / 2; | |
} | |
else { | |
boundM = (N - 1) / 2; |
View sine_array_precomputation.cpp
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Plaintext calculate_sine_array(int m, int N, int start, int stop, CryptoContext<DCRTPoly> cc) { | |
vector<int64_t> *sines = new vector<int64_t>(); | |
for (int k = 0; k != N; k++) { | |
if (k < start || k >= stop) { | |
sines->push_back(0); | |
continue; | |
} | |
int sinVal = int(sin(((2 * pi * k * m) / N)) * 100); //FOR MORE ACCURATE RESULTS, INCREASE MULTIPLE OF 10 | |
sines->push_back(sinVal); | |
} |
View cosine_array_precomputation.cpp
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Plaintext calculate_cosine_array(int n, int N, int start, int stop, CryptoContext<DCRTPoly> cc) { | |
vector<int64_t> *cosines = new vector<int64_t>(); | |
for (int k = 0; k != N; k++) { | |
if (k < start || k >= stop) { | |
cosines->push_back(0); | |
continue; | |
} | |
int cosVal = int(cos(((2 * pi * k * n) / N)) * 100); //FOR MORE ACCURATE RESULTS, INCREASE MULTIPLE OF 10 | |
cosines->push_back(cosVal); | |
} |