mirror of https://git.matrix.org/git/olm.git
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
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test-curve25519 version 20050915
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D. J. Bernstein
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Public domain.
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Tiny modifications by agl
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*/
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#include <stdio.h>
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extern void curve25519_donna(unsigned char *output, const unsigned char *a,
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const unsigned char *b);
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void doit(unsigned char *ek,unsigned char *e,unsigned char *k);
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void doit(unsigned char *ek,unsigned char *e,unsigned char *k)
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{
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int i;
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for (i = 0;i < 32;++i) printf("%02x",(unsigned int) e[i]); printf(" ");
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for (i = 0;i < 32;++i) printf("%02x",(unsigned int) k[i]); printf(" ");
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curve25519_donna(ek,e,k);
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for (i = 0;i < 32;++i) printf("%02x",(unsigned int) ek[i]); printf("\n");
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}
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unsigned char e1k[32];
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unsigned char e2k[32];
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unsigned char e1e2k[32];
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unsigned char e2e1k[32];
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unsigned char e1[32] = {3};
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unsigned char e2[32] = {5};
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unsigned char k[32] = {9};
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int
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main()
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{
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int loop;
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int i;
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for (loop = 0;loop < 10000;++loop) {
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doit(e1k,e1,k);
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doit(e2e1k,e2,e1k);
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doit(e2k,e2,k);
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doit(e1e2k,e1,e2k);
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for (i = 0;i < 32;++i) if (e1e2k[i] != e2e1k[i]) {
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printf("fail\n");
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return 1;
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}
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for (i = 0;i < 32;++i) e1[i] ^= e2k[i];
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for (i = 0;i < 32;++i) e2[i] ^= e1k[i];
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for (i = 0;i < 32;++i) k[i] ^= e1e2k[i];
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}
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return 0;
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}
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