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	sha224.c - sbase - suckless unix tools
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	---
	sha224.c (505B)
	---
	1 /* public domain sha224 implementation based on fips180-3 */
	2 #include <stdint.h>
	3 #include "../sha224.h"
	4
	5 extern void sha256_sum_n(void , uint8_t , int n);
	6
	7 void
	8 sha224_init(void *ctx)
	9 {
	10 struct sha224 *s = ctx;
	11 s->len = 0;
	12 s->h[0] = 0xc1059ed8;
	13 s->h[1] = 0x367cd507;
	14 s->h[2] = 0x3070dd17;
	15 s->h[3] = 0xf70e5939;
	16 s->h[4] = 0xffc00b31;
	17 s->h[5] = 0x68581511;
	18 s->h[6] = 0x64f98fa7;
	19 s->h[7] = 0xbefa4fa4;
	20 }
	21
	22 void
	23 sha224_sum(void *ctx, uint8_t md[SHA224_DIGEST_LENGTH])
	24 {
	25 sha256_sum_n(ctx, md, 8);
	26 }