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80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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* crypto_hashblocks/try.c version 20090118
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* D. J. Bernstein
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* Public domain.
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*/
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#include <stdlib.h>
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#include "crypto_hashblocks.h"
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extern unsigned char *alignedcalloc(unsigned long long);
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const char *primitiveimplementation = crypto_hashblocks_IMPLEMENTATION;
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#define MAXTEST_BYTES (10000 + crypto_hashblocks_STATEBYTES)
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#define CHECKSUM_BYTES 4096
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#define TUNE_BYTES 1536
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static unsigned char *h;
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static unsigned char *h2;
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static unsigned char *m;
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static unsigned char *m2;
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void preallocate(void)
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{
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}
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void allocate(void)
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{
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h = alignedcalloc(crypto_hashblocks_STATEBYTES);
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h2 = alignedcalloc(crypto_hashblocks_STATEBYTES);
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m = alignedcalloc(MAXTEST_BYTES);
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m2 = alignedcalloc(MAXTEST_BYTES);
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}
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void predoit(void)
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{
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}
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void doit(void)
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{
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crypto_hashblocks(h,m,TUNE_BYTES);
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}
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char checksum[crypto_hashblocks_STATEBYTES * 2 + 1];
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const char *checksum_compute(void)
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{
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long long i;
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long long j;
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for (i = 0;i < CHECKSUM_BYTES;++i) {
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long long hlen = crypto_hashblocks_STATEBYTES;
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long long mlen = i;
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for (j = -16;j < 0;++j) h[j] = random();
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for (j = hlen;j < hlen + 16;++j) h[j] = random();
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for (j = -16;j < hlen + 16;++j) h2[j] = h[j];
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for (j = -16;j < 0;++j) m[j] = random();
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for (j = mlen;j < mlen + 16;++j) m[j] = random();
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for (j = -16;j < mlen + 16;++j) m2[j] = m[j];
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if (crypto_hashblocks(h,m,mlen) != 0) return "crypto_hashblocks returns nonzero";
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for (j = -16;j < mlen + 16;++j) if (m2[j] != m[j]) return "crypto_hashblocks writes to input";
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for (j = -16;j < 0;++j) if (h2[j] != h[j]) return "crypto_hashblocks writes before output";
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for (j = hlen;j < hlen + 16;++j) if (h2[j] != h[j]) return "crypto_hashblocks writes after output";
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for (j = 0;j < hlen;++j) m2[j] = h2[j];
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if (crypto_hashblocks(h2,m2,mlen) != 0) return "crypto_hashblocks returns nonzero";
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if (crypto_hashblocks(m2,m2,mlen) != 0) return "crypto_hashblocks returns nonzero";
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for (j = 0;j < hlen;++j) if (m2[j] != h2[j]) return "crypto_hashblocks does not handle overlap";
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for (j = 0;j < mlen;++j) m[j] ^= h[j % hlen];
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m[mlen] = h[0];
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}
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if (crypto_hashblocks(h,m,CHECKSUM_BYTES) != 0) return "crypto_hashblocks returns nonzero";
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for (i = 0;i < crypto_hashblocks_STATEBYTES;++i) {
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checksum[2 * i] = "0123456789abcdef"[15 & (h[i] >> 4)];
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checksum[2 * i + 1] = "0123456789abcdef"[15 & h[i]];
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}
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checksum[2 * i] = 0;
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return 0;
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}
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