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| [9] | 1 | /*
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| 2 | rand256.c
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| 3 |
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| 4 | Created: Oct 2000 by Philip Homburg <philip@f-mnx.phicoh.com>
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| 5 |
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| 6 | Generate 256-bit random numbers
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| 7 | */
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| 8 |
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| 9 | #include <sha2.h>
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| 10 | #include "inet.h"
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| 11 | #include "rand256.h"
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| 12 |
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| 13 | PRIVATE u32_t base_bits[8];
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| 14 |
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| 15 | PUBLIC void init_rand256(bits)
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| 16 | u8_t bits[32];
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| 17 | {
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| 18 | memcpy(base_bits, bits, sizeof(base_bits));
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| 19 | }
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| 20 |
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| 21 | PUBLIC void rand256(bits)
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| 22 | u8_t bits[32];
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| 23 | {
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| 24 | u32_t a;
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| 25 | SHA256_CTX ctx;
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| 26 |
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| 27 | a= ++base_bits[0];
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| 28 | if (a == 0)
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| 29 | base_bits[1]++;
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| 30 | SHA256_Init(&ctx);
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| 31 | SHA256_Update(&ctx, (unsigned char *)base_bits, sizeof(base_bits));
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| 32 | SHA256_Final(bits, &ctx);
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| 33 | }
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| 34 |
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| 35 | /*
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| 36 | * $PchId: rand256.c,v 1.1 2005/06/28 14:13:43 philip Exp $
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| 37 | */
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