box.c

#define TEST_NAME "box"
#include "cmptest.h"

static const unsigned char alicesk[32] = {
    0x77, 0x07, 0x6d, 0x0a, 0x73, 0x18, 0xa5, 0x7d, 0x3c, 0x16, 0xc1,
    0x72, 0x51, 0xb2, 0x66, 0x45, 0xdf, 0x4c, 0x2f, 0x87, 0xeb, 0xc0,
    0x99, 0x2a, 0xb1, 0x77, 0xfb, 0xa5, 0x1d, 0xb9, 0x2c, 0x2a
};

static const unsigned char bobpk[32] = {
    0xde, 0x9e, 0xdb, 0x7d, 0x7b, 0x7d, 0xc1, 0xb4, 0xd3, 0x5b, 0x61,
    0xc2, 0xec, 0xe4, 0x35, 0x37, 0x3f, 0x83, 0x43, 0xc8, 0x5b, 0x78,
    0x67, 0x4d, 0xad, 0xfc, 0x7e, 0x14, 0x6f, 0x88, 0x2b, 0x4f
};

static const unsigned char small_order_p[crypto_box_PUBLICKEYBYTES] = {
    0xe0, 0xeb, 0x7a, 0x7c, 0x3b, 0x41, 0xb8, 0xae, 0x16, 0x56, 0xe3,
    0xfa, 0xf1, 0x9f, 0xc4, 0x6a, 0xda, 0x09, 0x8d, 0xeb, 0x9c, 0x32,
    0xb1, 0xfd, 0x86, 0x62, 0x05, 0x16, 0x5f, 0x49, 0xb8, 0x00
};

static const unsigned char nonce[24] = { 0x69, 0x69, 0x6e, 0xe9, 0x55, 0xb6,
                                         0x2b, 0x73, 0xcd, 0x62, 0xbd, 0xa8,
                                         0x75, 0xfc, 0x73, 0xd6, 0x82, 0x19,
                                         0xe0, 0x03, 0x6b, 0x7a, 0x0b, 0x37 };

/* API requires first 32 bytes to be 0 */
static const unsigned char m[163] = {
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    0,    0,    0,    0,    0,    0,    0,    0,    0xbe, 0x07, 0x5f, 0xc5,
    0x3c, 0x81, 0xf2, 0xd5, 0xcf, 0x14, 0x13, 0x16, 0xeb, 0xeb, 0x0c, 0x7b,
    0x52, 0x28, 0xc5, 0x2a, 0x4c, 0x62, 0xcb, 0xd4, 0x4b, 0x66, 0x84, 0x9b,
    0x64, 0x24, 0x4f, 0xfc, 0xe5, 0xec, 0xba, 0xaf, 0x33, 0xbd, 0x75, 0x1a,
    0x1a, 0xc7, 0x28, 0xd4, 0x5e, 0x6c, 0x61, 0x29, 0x6c, 0xdc, 0x3c, 0x01,
    0x23, 0x35, 0x61, 0xf4, 0x1d, 0xb6, 0x6c, 0xce, 0x31, 0x4a, 0xdb, 0x31,
    0x0e, 0x3b, 0xe8, 0x25, 0x0c, 0x46, 0xf0, 0x6d, 0xce, 0xea, 0x3a, 0x7f,
    0xa1, 0x34, 0x80, 0x57, 0xe2, 0xf6, 0x55, 0x6a, 0xd6, 0xb1, 0x31, 0x8a,
    0x02, 0x4a, 0x83, 0x8f, 0x21, 0xaf, 0x1f, 0xde, 0x04, 0x89, 0x77, 0xeb,
    0x48, 0xf5, 0x9f, 0xfd, 0x49, 0x24, 0xca, 0x1c, 0x60, 0x90, 0x2e, 0x52,
    0xf0, 0xa0, 0x89, 0xbc, 0x76, 0x89, 0x70, 0x40, 0xe0, 0x82, 0xf9, 0x37,
    0x76, 0x38, 0x48, 0x64, 0x5e, 0x07, 0x05
};

static unsigned char c[163];

int
main(void)
{
    unsigned char k[crypto_box_BEFORENMBYTES];
    int           i;
    int           ret;

    ret = crypto_box(c, m, 163, nonce, bobpk, alicesk);
    assert(ret == 0);
    for (i = 16; i < 163; ++i) {
        printf(",0x%02x", (unsigned int) c[i]);
        if (i % 8 == 7)
            printf("\n");
    }
    printf("\n");

    ret = crypto_box(c, m, 163, nonce, small_order_p, alicesk);
    assert(ret == -1);

    memset(c, 0, sizeof c);

    ret = crypto_box_beforenm(k, bobpk, alicesk);
    assert(ret == 0);
    crypto_box_afternm(c, m, 163, nonce, k);
    for (i = 16; i < 163; ++i) {
        printf(",0x%02x", (unsigned int) c[i]);
        if (i % 8 == 7)
            printf("\n");
    }
    printf("\n");

    ret = crypto_box_beforenm(k, small_order_p, alicesk);
    assert(ret == -1);

    assert(crypto_box_seedbytes() > 0U);
    assert(crypto_box_publickeybytes() > 0U);
    assert(crypto_box_secretkeybytes() > 0U);
    assert(crypto_box_beforenmbytes() > 0U);
    assert(crypto_box_noncebytes() > 0U);
    assert(crypto_box_zerobytes() > 0U);
    assert(crypto_box_boxzerobytes() > 0U);
    assert(crypto_box_macbytes() > 0U);
    assert(crypto_box_messagebytes_max() > 0U);
    assert(strcmp(crypto_box_primitive(), "curve25519xsalsa20poly1305") == 0);
    assert(crypto_box_curve25519xsalsa20poly1305_seedbytes() ==
           crypto_box_seedbytes());
    assert(crypto_box_curve25519xsalsa20poly1305_publickeybytes() ==
           crypto_box_publickeybytes());
    assert(crypto_box_curve25519xsalsa20poly1305_secretkeybytes() ==
           crypto_box_secretkeybytes());
    assert(crypto_box_curve25519xsalsa20poly1305_beforenmbytes() ==
           crypto_box_beforenmbytes());
    assert(crypto_box_curve25519xsalsa20poly1305_noncebytes() ==
           crypto_box_noncebytes());
    assert(crypto_box_curve25519xsalsa20poly1305_zerobytes() ==
           crypto_box_zerobytes());
    assert(crypto_box_curve25519xsalsa20poly1305_boxzerobytes() ==
           crypto_box_boxzerobytes());
    assert(crypto_box_curve25519xsalsa20poly1305_macbytes() ==
           crypto_box_macbytes());
    assert(crypto_box_curve25519xsalsa20poly1305_messagebytes_max() ==
           crypto_box_messagebytes_max());

    return 0;
}