Implement Secure Hashing Algorithm – 512 ( SHA-512 ) as Functional Programming Paradigm

#include using namespace std;typedef unsigned long long int int64;  int64 Message[80];  const int64 Constants[80]    = { 0x428a2f98d728ae22, 0x7137449123ef65cd,        0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc,        0x3956c25bf348b538, 0x59f111f1b605d019,        0x923f82a4af194f9b, 0xab1c5ed5da6d8118,        0xd807aa98a3030242, 0x12835b0145706fbe,        0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,        0x72be5d74f27b896f, 0x80deb1fe3b1696b1,        0x9bdc06a725c71235, 0xc19bf174cf692694,        0xe49b69c19ef14ad2, 0xefbe4786384f25e3,        0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,        0x2de92c6f592b0275, 0x4a7484aa6ea6e483,        0x5cb0a9dcbd41fbd4, 0x76f988da831153b5,        0x983e5152ee66dfab, 0xa831c66d2db43210,        0xb00327c898fb213f, 0xbf597fc7beef0ee4,        0xc6e00bf33da88fc2, 0xd5a79147930aa725,        0x06ca6351e003826f, 0x142929670a0e6e70,        0x27b70a8546d22ffc, 0x2e1b21385c26c926,        0x4d2c6dfc5ac42aed, 0x53380d139d95b3df,        0x650a73548baf63de, 0x766a0abb3c77b2a8,        0x81c2c92e47edaee6, 0x92722c851482353b,        0xa2bfe8a14cf10364, 0xa81a664bbc423001,        0xc24b8b70d0f89791, 0xc76c51a30654be30,        0xd192e819d6ef5218, 0xd69906245565a910,        0xf40e35855771202a, 0x106aa07032bbd1b8,        0x19a4c116b8d2d0c8, 0x1e376c085141ab53,        0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8,        0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb,        0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3,        0x748f82ee5defb2fc, 0x78a5636f43172f60,        0x84c87814a1f0ab72, 0x8cc702081a6439ec,        0x90befffa23631e28, 0xa4506cebde82bde9,        0xbef9a3f7b2c67915, 0xc67178f2e372532b,        0xca273eceea26619c, 0xd186b8c721c0c207,        0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178,        0x06f067aa72176fba, 0x0a637dc5a2c898a6,        0x113f9804bef90dae, 0x1b710b35131c471b,        0x28db77f523047d84, 0x32caab7b40c72493,        0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c,        0x4cc5d4becb3e42b6, 0x597f299cfc657e2a,        0x5fcb6fab3ad6faec, 0x6c44198c4a475817 };  string gethex(string bin){    if (bin == “0000”)        return “0”;    if (bin == “0001”)        return “1”;    if (bin == “0010”)        return “2”;    if (bin == “0011”)        return “3”;    if (bin == “0100”)        return “4”;    if (bin == “0101”)        return “5”;    if (bin == “0110”)        return “6”;    if (bin == “0111”)        return “7”;    if (bin == “1000”)        return “8”;    if (bin == “1001”)        return “9”;    if (bin == “1010”)        return “a”;    if (bin == “1011”)        return “b”;    if (bin == “1100”)        return “c”;    if (bin == “1101”)        return “d”;    if (bin == “1110”)        return “e”;    if (bin == “1111”)        return “f”;}  string decimaltohex(int64 deci){        string EQBIN = bitset(deci).to_string();          string hexstring = “”;    string temp;          for (unsigned int i = 0;         i < EQBIN.length(); i += 4) {        temp = EQBIN.substr(i, 4);        hexstring += gethex(temp);    }          return hexstring;}  int64 BintoDec(string bin){      int64 value = bitset(bin)                      .to_ullong();    return value;}  int64 rotate_right(int64 x, int n){    return (x >> n) | (x > n);}  void seperator(string getBlock){        int chunknum = 0;          for (unsigned int i = 0;         i < getBlock.length();         i += 64, ++chunknum) {                  Message[chunknum]            = BintoDec(getBlock.substr(i, 64));    }          for (int g = 16; g < 80; ++g) {                  int64 WordA = rotate_right(Message[g - 2], 19)                      ^ rotate_right(Message[g - 2], 61)                      ^ shift_right(Message[g - 2], 6);                  int64 WordB = Message[g - 7];                  int64 WordC = rotate_right(Message[g - 15], 1)                      ^ rotate_right(Message[g - 15], 8)                      ^ shift_right(Message[g - 15], 7);                  int64 WordD = Message[g - 16];                  int64 T = WordA + WordB + WordC + WordD;                  Message[g] = T;    }}  int64 maj(int64 a, int64 b, int64 c){    return (a & b) ^ (b & c) ^ (c & a);}  int64 Ch(int64 e, int64 f, int64 g){    return (e & f) ^ (~e & g);}  int64 sigmaE(int64 e){        return rotate_right(e, 14)           ^ rotate_right(e, 18)           ^ rotate_right(e, 41);}  int64 sigmaA(int64 a){          return rotate_right(a, 28)           ^ rotate_right(a, 34)           ^ rotate_right(a, 39);}  void Func(int64 a, int64 b, int64 c,          int64& d, int64 e, int64 f,          int64 g, int64& h, int K){        int64 T1 = h + Ch(e, f, g) + sigmaE(e) + Message[K]               + Constants[K];    int64 T2 = sigmaA(a) + maj(a, b, c);      d = d + T1;    h = T1 + T2;}  string SHA512(string myString){        int64 A = 0x6a09e667f3bcc908;    int64 B = 0xbb67ae8584caa73b;    int64 C = 0x3c6ef372fe94f82b;    int64 D = 0xa54ff53a5f1d36f1;    int64 E = 0x510e527fade682d1;    int64 F = 0x9b05688c2b3e6c1f;    int64 G = 0x1f83d9abfb41bd6b;    int64 H = 0x5be0cd19137e2179;      int64 AA, BB, CC, DD, EE, FF, GG, HH;      stringstream fixedstream;          for (int i = 0;         i < myString.size(); ++i) {                  fixedstream = 128) {        tobeadded = 1024 - modded;    }          else if (1024 - modded < 128) {        tobeadded = 2048 - modded;    }          s1024 += "1";              for (int y = 0; y < tobeadded - 129; y++) {        s1024 += "0";    }              string lengthbits        = std::bitset(orilen).to_string();          s1024 += lengthbits;              int blocksnumber = s1024.length() / 1024;          int chunknum = 0;          string Blocks[blocksnumber];          for (int i = 0; i < s1024.length();         i += 1024, ++chunknum) {        Blocks[chunknum] = s1024.substr(i, 1024);    }          for (int letsgo = 0;         letsgo < blocksnumber;         ++letsgo) {                          seperator(Blocks[letsgo]);          AA = A;        BB = B;        CC = C;        DD = D;        EE = E;        FF = F;        GG = G;        HH = H;          int count = 0;                  for (int i = 0; i < 10; i++) {                            Func(A, B, C, D, E, F, G, H, count);            count++;            Func(H, A, B, C, D, E, F, G, count);            count++;            Func(G, H, A, B, C, D, E, F, count);            count++;            Func(F, G, H, A, B, C, D, E, count);            count++;            Func(E, F, G, H, A, B, C, D, count);            count++;            Func(D, E, F, G, H, A, B, C, count);            count++;            Func(C, D, E, F, G, H, A, B, count);            count++;            Func(B, C, D, E, F, G, H, A, count);            count++;        }                            A += AA;        B += BB;        C += CC;        D += DD;        E += EE;        F += FF;        G += GG;        H += HH;    }      stringstream output;              output

Implement Secure Hashing Algorithm – 512 ( SHA-512 ) as Functional Programming Paradigm

#include using namespace std;typedef unsigned long long int int64;  int64 Message[80];  const int64 Constants[80]    = { 0x428a2f98d728ae22, 0x7137449123ef65cd,        0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc,        0x3956c25bf348b538, 0x59f111f1b605d019,        0x923f82a4af194f9b, 0xab1c5ed5da6d8118,        0xd807aa98a3030242, 0x12835b0145706fbe,        0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,        0x72be5d74f27b896f, 0x80deb1fe3b1696b1,        0x9bdc06a725c71235, 0xc19bf174cf692694,        0xe49b69c19ef14ad2, 0xefbe4786384f25e3,        0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,        0x2de92c6f592b0275, 0x4a7484aa6ea6e483,        0x5cb0a9dcbd41fbd4, 0x76f988da831153b5,        0x983e5152ee66dfab, 0xa831c66d2db43210,        0xb00327c898fb213f, 0xbf597fc7beef0ee4,        0xc6e00bf33da88fc2, 0xd5a79147930aa725,        0x06ca6351e003826f, 0x142929670a0e6e70,        0x27b70a8546d22ffc, 0x2e1b21385c26c926,        0x4d2c6dfc5ac42aed, 0x53380d139d95b3df,        0x650a73548baf63de, 0x766a0abb3c77b2a8,        0x81c2c92e47edaee6, 0x92722c851482353b,        0xa2bfe8a14cf10364, 0xa81a664bbc423001,        0xc24b8b70d0f89791, 0xc76c51a30654be30,        0xd192e819d6ef5218, 0xd69906245565a910,        0xf40e35855771202a, 0x106aa07032bbd1b8,        0x19a4c116b8d2d0c8, 0x1e376c085141ab53,        0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8,        0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb,        0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3,        0x748f82ee5defb2fc, 0x78a5636f43172f60,        0x84c87814a1f0ab72, 0x8cc702081a6439ec,        0x90befffa23631e28, 0xa4506cebde82bde9,        0xbef9a3f7b2c67915, 0xc67178f2e372532b,        0xca273eceea26619c, 0xd186b8c721c0c207,        0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178,        0x06f067aa72176fba, 0x0a637dc5a2c898a6,        0x113f9804bef90dae, 0x1b710b35131c471b,        0x28db77f523047d84, 0x32caab7b40c72493,        0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c,        0x4cc5d4becb3e42b6, 0x597f299cfc657e2a,        0x5fcb6fab3ad6faec, 0x6c44198c4a475817 };  string gethex(string bin){    if (bin == “0000”)        return “0”;    if (bin == “0001”)        return “1”;    if (bin == “0010”)        return “2”;    if (bin == “0011”)        return “3”;    if (bin == “0100”)        return “4”;    if (bin == “0101”)        return “5”;    if (bin == “0110”)        return “6”;    if (bin == “0111”)        return “7”;    if (bin == “1000”)        return “8”;    if (bin == “1001”)        return “9”;    if (bin == “1010”)        return “a”;    if (bin == “1011”)        return “b”;    if (bin == “1100”)        return “c”;    if (bin == “1101”)        return “d”;    if (bin == “1110”)        return “e”;    if (bin == “1111”)        return “f”;}  string decimaltohex(int64 deci){        string EQBIN = bitset(deci).to_string();          string hexstring = “”;    string temp;          for (unsigned int i = 0;         i < EQBIN.length(); i += 4) {        temp = EQBIN.substr(i, 4);        hexstring += gethex(temp);    }          return hexstring;}  int64 BintoDec(string bin){      int64 value = bitset(bin)                      .to_ullong();    return value;}  int64 rotate_right(int64 x, int n){    return (x >> n) | (x > n);}  void seperator(string getBlock){        int chunknum = 0;          for (unsigned int i = 0;         i < getBlock.length();         i += 64, ++chunknum) {                  Message[chunknum]            = BintoDec(getBlock.substr(i, 64));    }          for (int g = 16; g < 80; ++g) {                  int64 WordA = rotate_right(Message[g - 2], 19)                      ^ rotate_right(Message[g - 2], 61)                      ^ shift_right(Message[g - 2], 6);                  int64 WordB = Message[g - 7];                  int64 WordC = rotate_right(Message[g - 15], 1)                      ^ rotate_right(Message[g - 15], 8)                      ^ shift_right(Message[g - 15], 7);                  int64 WordD = Message[g - 16];                  int64 T = WordA + WordB + WordC + WordD;                  Message[g] = T;    }}  int64 maj(int64 a, int64 b, int64 c){    return (a & b) ^ (b & c) ^ (c & a);}  int64 Ch(int64 e, int64 f, int64 g){    return (e & f) ^ (~e & g);}  int64 sigmaE(int64 e){        return rotate_right(e, 14)           ^ rotate_right(e, 18)           ^ rotate_right(e, 41);}  int64 sigmaA(int64 a){          return rotate_right(a, 28)           ^ rotate_right(a, 34)           ^ rotate_right(a, 39);}  void Func(int64 a, int64 b, int64 c,          int64& d, int64 e, int64 f,          int64 g, int64& h, int K){        int64 T1 = h + Ch(e, f, g) + sigmaE(e) + Message[K]               + Constants[K];    int64 T2 = sigmaA(a) + maj(a, b, c);      d = d + T1;    h = T1 + T2;}  string SHA512(string myString){        int64 A = 0x6a09e667f3bcc908;    int64 B = 0xbb67ae8584caa73b;    int64 C = 0x3c6ef372fe94f82b;    int64 D = 0xa54ff53a5f1d36f1;    int64 E = 0x510e527fade682d1;    int64 F = 0x9b05688c2b3e6c1f;    int64 G = 0x1f83d9abfb41bd6b;    int64 H = 0x5be0cd19137e2179;      int64 AA, BB, CC, DD, EE, FF, GG, HH;      stringstream fixedstream;          for (int i = 0;         i < myString.size(); ++i) {                  fixedstream = 128) {        tobeadded = 1024 - modded;    }          else if (1024 - modded < 128) {        tobeadded = 2048 - modded;    }          s1024 += "1";              for (int y = 0; y < tobeadded - 129; y++) {        s1024 += "0";    }              string lengthbits        = std::bitset(orilen).to_string();          s1024 += lengthbits;              int blocksnumber = s1024.length() / 1024;          int chunknum = 0;          string Blocks[blocksnumber];          for (int i = 0; i < s1024.length();         i += 1024, ++chunknum) {        Blocks[chunknum] = s1024.substr(i, 1024);    }          for (int letsgo = 0;         letsgo < blocksnumber;         ++letsgo) {                          seperator(Blocks[letsgo]);          AA = A;        BB = B;        CC = C;        DD = D;        EE = E;        FF = F;        GG = G;        HH = H;          int count = 0;                  for (int i = 0; i < 10; i++) {                            Func(A, B, C, D, E, F, G, H, count);            count++;            Func(H, A, B, C, D, E, F, G, count);            count++;            Func(G, H, A, B, C, D, E, F, count);            count++;            Func(F, G, H, A, B, C, D, E, count);            count++;            Func(E, F, G, H, A, B, C, D, count);            count++;            Func(D, E, F, G, H, A, B, C, count);            count++;            Func(C, D, E, F, G, H, A, B, count);            count++;            Func(B, C, D, E, F, G, H, A, count);            count++;        }                            A += AA;        B += BB;        C += CC;        D += DD;        E += EE;        F += FF;        G += GG;        H += HH;    }      stringstream output;              output