FreeBSD/Linux Kernel Cross Reference
sys/contrib/libsodium/test/default/core6.c

     
     #define TEST_NAME "core6"
     #include "cmptest.h"
     
     static unsigned char k[32] = { 0xee, 0x30, 0x4f, 0xca, 0x27, 0x00, 0x8d, 0x8c,
                                    0x12, 0x6f, 0x90, 0x02, 0x79, 0x01, 0xd8, 0x0f,
                                    0x7f, 0x1d, 0x8b, 0x8d, 0xc9, 0x36, 0xcf, 0x3b,
                                    0x9f, 0x81, 0x96, 0x92, 0x82, 0x7e, 0x57, 0x77 };
     
    static unsigned char in[16] = {
        0x81, 0x91, 0x8e, 0xf2, 0xa5, 0xe0, 0xda, 0x9b,
        0x3e, 0x90, 0x60, 0x52, 0x1e, 0x4b, 0xb3, 0x52
    };
    
    static unsigned char c[16] = { 101, 120, 112, 97,  110, 100, 32, 51,
                                   50,  45,  98,  121, 116, 101, 32, 107 };
    
    static unsigned char out[64];
    
    static void
    print(unsigned char *x, unsigned char *y)
    {
        int          i;
        unsigned int borrow = 0;
    
        for (i = 0; i < 4; ++i) {
            unsigned int xi = x[i];
            unsigned int yi = y[i];
            printf(",0x%02x", 255 & (xi - yi - borrow));
            borrow = (xi < yi + borrow);
        }
    }
    
    int
    main(void)
    {
        crypto_core_salsa20(out, in, k, c);
        print(out, c);
        print(out + 20, c + 4);
        printf("\n");
        print(out + 40, c + 8);
        print(out + 60, c + 12);
        printf("\n");
        print(out + 24, in);
        print(out + 28, in + 4);
        printf("\n");
        print(out + 32, in + 8);
        print(out + 36, in + 12);
        printf("\n");
    
        return 0;
    }

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