urbit/j/5/shax.c

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/* j/5/shax.c
**
** This file is in the public domain.
*/
#include "all.h"
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#if defined(U2_OS_osx)
#include <CommonCrypto/CommonDigest.h>
#else
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#include <openssl/sha.h>
#endif
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/* functions
*/
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u3_noun
u3_cqe_shax(
u3_atom a)
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{
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c3_w met_w = u3_cr_met(3, a);
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c3_y* fat_y = c3_malloc(met_w + 1);
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u3_cr_bytes(0, met_w, fat_y, a);
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{
c3_y dig_y[32];
#if defined(U2_OS_osx)
CC_SHA256_CTX ctx_h;
CC_SHA256_Init(&ctx_h);
CC_SHA256_Update(&ctx_h, fat_y, met_w);
CC_SHA256_Final(dig_y, &ctx_h);
#else
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SHA256_CTX ctx_h;
SHA256_Init(&ctx_h);
SHA256_Update(&ctx_h, fat_y, met_w);
SHA256_Final(dig_y, &ctx_h);
#endif
free(fat_y);
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return u3_ci_bytes(32, dig_y);
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}
}
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u3_noun
u3_cqe_shal(u3_atom a,
u3_atom b)
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{
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c3_assert(u3_so(u3_co_is_cat(a)));
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c3_y* fat_y = c3_malloc(a + 1);
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u3_cr_bytes(0, a, fat_y, b);
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{
c3_y dig_y[64];
#if defined(U2_OS_osx)
CC_SHA512_CTX ctx_h;
CC_SHA512_Init(&ctx_h);
CC_SHA512_Update(&ctx_h, fat_y, a);
CC_SHA512_Final(dig_y, &ctx_h);
#else
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SHA512_CTX ctx_h;
SHA512_Init(&ctx_h);
SHA512_Update(&ctx_h, fat_y, a);
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SHA512_Final(dig_y, &ctx_h);
#endif
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free(fat_y);
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return u3_ci_bytes(64, dig_y);
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}
}
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u3_noun
u3_cqe_shas(
u3_atom sal,
u3_atom ruz)
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{
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u3_noun one = u3_cqe_shax(ruz);
u3_noun two = u3_cqc_mix(sal, one);
u3_noun tri = u3_cqe_shax(two);
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u3z(one); u3z(two); return tri;
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}
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u3_noun
u3_cwe_shax(
u3_noun cor)
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{
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u3_noun a;
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if ( (u3_none == (a = u3_cr_at(u3_cv_sam, cor))) ||
(u3_no == u3ud(a)) )
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{
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return u3_cm_bail(c3__exit);
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} else {
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return u3_cqe_shax(a);
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}
}
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u3_noun
u3_cwe_shal(u3_noun cor)
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{
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u3_noun a, b;
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if ( (u3_none == (a = u3_cr_at(u3_cv_sam_2, cor))) ||
(u3_none == (b = u3_cr_at(u3_cv_sam_3, cor))) ||
(u3_no == u3ud(a)) ||
(u3_no == u3_co_is_cat(a)) ||
(u3_no == u3ud(b)) )
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{
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return u3_cm_bail(c3__exit);
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} else {
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return u3_cqe_shal(a, b);
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}
}
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u3_noun
u3_cwe_shas(u3_noun cor)
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{
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u3_noun sal, ruz;
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if ( (u3_none == (sal = u3_cr_at(u3_cv_sam_2, cor))) ||
(u3_none == (ruz = u3_cr_at(u3_cv_sam_3, cor))) ||
(u3_no == u3ud(sal)) ||
(u3_no == u3ud(ruz)) )
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{
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return u3_cm_bail(c3__exit);
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} else {
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return u3_cqe_shas(sal, ruz);
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}
}
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static u3_noun
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_og_list(
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u3_noun a,
u3_noun b,
u3_noun c)
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{
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u3_noun l = u3_nul;
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if ( u3_ne(u3_co_is_cat(b)) ) {
return u3_cm_bail(c3__fail);
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}
while ( 0 != b ) {
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u3_noun x = u3_cqc_mix(a, c);
u3_noun y = u3_cqc_mix(b, x);
u3_noun d = u3_cqe_shas(c3_s4('o','g','-','b'), y);
u3_noun m;
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u3z(x); u3z(y);
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if ( b < 256 ) {
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u3_noun e = u3_cqc_end(0, b, d);
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u3z(d);
m = u3nc(b, e);
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b = 0;
} else {
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m = u3nc(256, d);
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c = d;
b -= 256;
}
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l = u3nc(m, l);
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}
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return u3_ckb_flop(l);
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}
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u3_noun
u3_cqeo_raw(u3_atom a, u3_atom b)
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{
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u3_noun x = u3_cqc_mix(b, a);
u3_noun c = u3_cqe_shas(c3_s4('o','g','-','a'), x);
u3_noun l = _og_list(a, b, c);
u3_noun r = u3_cqc_can(0, l);
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u3z(l);
u3z(c);
u3z(x);
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return r;
}
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u3_noun
u3_cweo_raw(u3_noun cor)
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{
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u3_noun a, b;
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if ( u3_no == u3_cr_mean(cor, u3_cv_sam, &b, u3_cv_con_sam, &a, 0) ) {
return u3_cm_bail(c3__exit);
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} else {
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return u3_cqeo_raw(a, b);
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}
}