44f7a9f3cb
Encrypting in-place and storing the tag separately is a very common need. Instead of forcing people to do their own cuisine, let's provide simple variants of the _easy interfaces to do that.
33 lines
962 B
C
33 lines
962 B
C
#include <stdio.h>
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#include <string.h>
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#define TEST_NAME "secretbox_easy2"
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#include "cmptest.h"
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unsigned char m[10000];
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unsigned char m2[10000];
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unsigned char c[crypto_secretbox_MACBYTES + 10000];
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unsigned char nonce[crypto_secretbox_NONCEBYTES];
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unsigned char k[crypto_secretbox_KEYBYTES];
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unsigned char mac[crypto_secretbox_MACBYTES];
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int main(void)
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{
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unsigned long long mlen;
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randombytes_buf(k, sizeof k);
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mlen = (unsigned long long) randombytes_uniform((uint32_t) sizeof m);
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randombytes_buf(m, mlen);
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randombytes_buf(nonce, sizeof nonce);
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crypto_secretbox_easy(c, m, mlen, nonce, k);
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crypto_secretbox_open_easy(m2, c, mlen + crypto_secretbox_MACBYTES,
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nonce, k);
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printf("%d\n", memcmp(m, m2, mlen));
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crypto_secretbox_easy_detached(c, mac, m, mlen, nonce, k);
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crypto_secretbox_open_easy_detached(m2, c, mac, mlen, nonce, k);
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printf("%d\n", memcmp(m, m2, mlen));
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return 0;
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}
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